CN101408672B - Laser indication device - Google Patents
Laser indication device Download PDFInfo
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- CN101408672B CN101408672B CN2007101628198A CN200710162819A CN101408672B CN 101408672 B CN101408672 B CN 101408672B CN 2007101628198 A CN2007101628198 A CN 2007101628198A CN 200710162819 A CN200710162819 A CN 200710162819A CN 101408672 B CN101408672 B CN 101408672B
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Abstract
The invention discloses a laser indicating device capable of controlling pattern and size of a projected image. The laser indicating device comprises an enclosure; a man-machine control interface which is arranged on the outside of the enclosure and is used for controlling internal components inside the enclosure from the outside; a frequency/phase control module for controlling a drive energy control module; the drive energy control module for controlling the drive energy of an optical scanning device; a laser beam generation module for emitting a laser beam to the optical scanning device; and the optical scanning device which can use an optical scanning vibration mirror configuration with one or two one-dimensional swing or one two-dimensional swing to cause the laser beam to form a scanning beam in a scanning mode and then projecting the scanning beam outwards to form an image on a projection surface. Therefore, by controlling the man-machine interface, a user can select a projection of a single light spot or a length-controllable straight line, or select a projection of various images such as a size-controllable ellipse, circle or Lissajous pattern and the like so as to enhance the service efficiency of the laser indicating device.
Description
Technical field
What the present invention relates to is a kind of laser indication device, especially refer to that control that a kind of user can be by a man-machine control interface is to change the amplitude size (scanning angle) of a light scanning apparatus, can control the pattern or the size of projects images in real time, and can select to throw the straight line of a single luminous point or a controllable size (length), or throw ellipse, circle or the Lissajou's figure various images such as (Lissajous pattern) of a controllable size.
Background technology
Common on the market at present and be extensive use of a kind of single light-spot type laser indication device (laser pointer), a general design of its appearance and modeling as a pen type tubular shell, in adorn a LASER Light Source such as laser diode to produce laser beam, laser beam can outwards be penetrated by an end of tubular shell, again the tubular shell outside be provided with a gauge tap such as button with control described in the keying of laser diode of dress; But user's hand is taken described laser indication device and is controlled it and send a laser beam and indication place of directive desire, makes described laser beam throw the image that forms single laser spot in desire indication place, to reach indicating effect; So, when utilizing above-mentioned existing single light-spot type laser indication device to indicate operation, for example make bulletin with described single laser spot, because a position that has in a big way can't be indicated or contain to single luminous point, the user often represented or emphasized a certain position on a chart of being indicated or the object to brandish (or shaking) described light-spot type laser indication device this moment, just brandished by gesture laser spot is indicated with dynamic move mode or to contain a certain position; Drop on the correct position of institute's desire indication but brandish the described laser spot of difficult accurately control because of gesture, the position that causes the desire indication of user institute does not conform to the position of the actual sign of described laser spot, causes the puzzlement in the use; Can reach the purpose that attraction sight is noted though gesture brandishes laser spot to be formed dynamically move, laser spot is all not good with accuracy and vision impression that dynamic move mode indicates a position.
Shortcoming at above-mentioned existing light-spot type laser indication device, the laser indication device of at present existing non-light-spot type, as U.S. Pat 5,450,148, it is at a laser indication device (laser pointer) lens pillar go up to be installed, and can throwing a laser linear pattern replacing single laser spot, but the length of described laser linear pattern can't be adjusted arbitrarily; And for example U.S. Pat 5,938,308, it is to go up at a laser indication device (laserpointer) a full image optical assembly (holographic element) or a diffraction optics assembly (diffractiveopticalelement) are installed, can projecting the fixed laser image of non-light-spot type, and can obtain the laser image of different pattern by changing (or also changing) described full image optical assembly; But if when throwing a laser image with the diffraction optics assembly, the size of described laser image can't real time altering, just can't need and the size of real time altering laser image with the user, therefore when the size of described laser image is not enough to sign or contains a certain position, the user still needs to reach the purpose of representing or emphasizing described position by brandishing of gesture, so the still puzzlement that can cause the user to use.If again with diffraction optics assembly projecting laser image, and add the mechanism that can also change the laser image content, though so can change the pattern of laser image, the size of laser image still can't be with the need and real time altering; And, use the diffraction optics assembly with the projecting laser image, have other problems such as low optical efficient and processing procedure difficulty, also can cause the puzzlement in the application relatively; And the present invention is at above-mentioned prior art problems or shortcoming and designed.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of pattern of may command projected image or the laser indication device of size, mainly comprise a shell body, one is located at the man-machine control interface of shell body outside, and a frequency/phase control module that is located at shell body inside drives energy control module in order to control one, one drives the driving energy of energy control module for controlling one light scanning apparatus, one laser beam generation module is in order to give off laser beam, with one can utilize one or two one dimension (1D, one-dimension) light scanning apparatus (light scanning device) that constituted of the photoscanning galvanometer (light scanning mirror) of swing or a two dimension (2D) swing in order to laser beam with one by the selected scan pattern of man-machine control interface form scanning light beam and again by a projection window on the shell body outwards projection on the projecting plane, to form an image; The control of wherein said image size can be reached by the amplitude size (or scanning angle) that changes described light scanning apparatus, and the big I of amplitude changes by increase or the minimizing that drives energy, also can by change driving frequency make its away from or reach near the resonant frequency of light scanning apparatus, when driving that energy is fixed and driving frequency during near resonant frequency amplitude (or scanning angle) increase, anti-then amplitude reduces; So, the user is by the control of man-machine control interface such as button or knob etc., can select to throw the straight line of a single luminous point or a controllable size in real time, or select to throw ellipse, circle or other the Lissajou's figure various images such as (Lissajous pattern) of a controllable size, to promote the service efficiency of laser indication device.
The present invention again a syllabus be to be to provide a kind of pattern of may command projected image or the laser indication device of size, wherein said light scanning apparatus (light scanning device) can utilize the photoscanning galvanometer (light scanning mirror) of two one dimensions (1D) swing or a two dimension (2D) swing to constitute, with so that scanning light beam projects the image of the Lissajou's figure (Lissajous pattern) of a controllable size and densely covered scanning light beam, so that the illumination as a relative size zone to be provided, make laser indication device have the electric torch functions of use of a may command illumination zone concurrently.
Another syllabus of the present invention be to be to provide a kind of pattern of may command projected image or the laser indication device of size, its further can be on the projection window the specific pierced pattern of a sheathed tool as the shield of an arrowhead form, make described laser indication device when the image of the Lissajou's figure (Lissajous pattern) of projection one controllable size and densely covered scanning light beam, can project the image of the described specific pierced pattern of a densely covered scanning light beam via described shield, to increase the variability and the selectivity of projects images, but and because of described shield low-cost production and can the variation design, can reducing the manufacturing cost of laser indication device, and promote the service efficiency and the popularization of laser indication device relatively.
Description of drawings
Fig. 1 is the system architecture synoptic diagram of one embodiment of the invention;
Fig. 2 is the frequency corresponding relation figure (longitudinal axis is an amplitude, and transverse axis is a sweep frequency) of light scanning apparatus of the present invention (micro electro mechanical swing formula catoptron, MEMS oscillating mirror);
Fig. 3 is that the present invention utilizes the photoscanning galvanometer of an one dimension (1D) swing and throws the structural representation of the rectilinear picture of an adjustable in length;
Fig. 4 is that the present invention utilizes the photoscanning galvanometer of two one dimensions (1D) swings and throws the structural representation of the whole ellipse pie chart picture of an adjustable size;
Fig. 5 is that the present invention utilizes the photoscanning galvanometer of a two dimension (2D) swing and throws the structural representation of the whole ellipse pie chart picture of an adjustable size;
Fig. 6 A is that the pie chart that throws of the present invention is as synoptic diagram;
Fig. 6 B is that the ellipse pie chart that throws of the present invention is as synoptic diagram;
Fig. 6 C is the oblique oval image synoptic diagram that the present invention throws;
Fig. 7 A is that the present invention throws a sharp Sa as (Lissajous) graph image structural representation;
Fig. 7 B is that two scan axises are vertical mutually among Fig. 7 A, and amplitude is identical, the front elevational schematic of a Lissajou's figure image of projection when phase differential 90 degree, X-axis frequency are 1.05 times of Y-axis frequencies;
Fig. 8 A be among Fig. 7 A Li Sa as (Lissajous) figure through the shield of the specific pierced pattern of a tool (arrow) after and project a structural representation of specific pattern image (arrow) that gathers scanning light beam;
Fig. 8 B is that sharp Sa among Fig. 7 B is as image (arrow) front elevational schematic of (Lissajous) figure after through the shield of the specific pierced pattern of a tool (arrow);
Fig. 9 is the user mode synoptic diagram that the present invention throws a straight line;
Figure 10 is that the present invention throws an oval-shaped user mode synoptic diagram.
Description of reference numerals: 1-laser indication device; The 10-shell body; 11 windows; The man-machine control interface of 20-; 30-frequency/phase control module; 40-drives energy control module; 50-laser beam generation module; The 51-laser beam; The 52-scanning light beam; The 60-light scanning apparatus; 61-photoscanning galvanometer (one dimension swing); 62-photoscanning galvanometer (two dimension swing); 70a～70g-image; 80-is subjected to indicator diagram (or object); 81-position to be indicated; The 90-shield; The 91-pierced pattern.
Embodiment
Clear and definite full and accurate for the present invention is also added, enumerate preferred embodiment now and cooperate following diagram, structure of the present invention and technical characterictic thereof are described in detail as the back:
With reference to shown in Figure 1, it is the system architecture synoptic diagram of one embodiment of the invention.The present invention is a kind of pattern of may command projected image or the laser indication device (laser pointer with the pattern and size ofprojecting image controllable) 1 of size, mainly comprise: a shell body 10, one man-machine control interface 20, a frequency/phase control module 30, drive energy control module 40, a laser beam generation module 50 and a light scanning apparatus 60, wherein, the appearance structure of described shell body 10 does not limit, and which is provided with a projection and outwards throws for scanning light beam with window 11; Described man-machine control interface 20 is provided in a side of on the outside of shell body 10, can be designed to as structures such as button or knobs, and using can be by controlling laser indication device 1 outward for the user.Described frequency/phase control module 30, drive energy control module 40, laser beam generation module 50 is the inner spaces that are laid in shell body 10 with light scanning apparatus 60, and its laying mode is so that shell body 10 can be light, thin, short and small and hand-holdable and to control use be good for the user; And frequency/phase control module 30 and described laser beam generation module 50 by the man-machine control interface 20 may command shell body inside on shell body 10 outsides, wherein, by described man-machine control interface 20 may command or change the drive pattern of described frequency/phase control module 30, as change the size and the phase differential of its frequency, can further control the driving energy model of described driving energy control module 40 again by the control of described frequency/phase control module 30, as change the size that it drives energy, can further control the scanning motion pattern of described light scanning apparatus 60, as change each photoscanning galvanometer in the described light scanning apparatus 60 (light scanning mirror), as one dimension (1D) swing photoscanning galvanometer 61 or two dimension (2D) swing photoscanning galvanometer 62 (appearance aftermentioneds), the amplitude size, just change each photoscanning galvanometer (61,62) scanning angle size; Described laser beam generation module 50, comprise one or above LASER Light Source, and the launch time of may command respective laser, and the generation pattern by described its laser beam 51 of laser beam generation module 50 may command, to cooperate the scanning motion pattern of described light scanning apparatus 60, make light scanning apparatus 60 laser beam 51 scannings can be formed scanning light beam 52, and outwards throw with window 11, on the projecting plane, to form the image of a controllable size via the projection on the shell body 10.
The structure kenel of described light scanning apparatus (light scanning device) 60 does not limit, can need with the design needs or the functions of use of laser indication device 1, and select to utilize the photoscanning galvanometer of different structure or different numbers to constitute, as selecting to utilize an one dimension (1D, one-dimension) Bai Dong photoscanning galvanometer (lightscanning mirror) 61 as shown in Figure 3, or the photoscanning galvanometer 61 (its two kinematic axis is vertical mutually) of two one dimensions (1D) swing as shown in Figure 4, or two dimension (2D, two-dimension) Bai Dong photoscanning galvanometer 62 is as shown in Figure 5; Wherein, described one dimension (1D) swing photoscanning galvanometer 61 is provided with a kinematic axis, described two dimension (2D) swing photoscanning galvanometer 62 is provided with two orthogonal kinematic axiss, basically all be to utilize MEMS (micro electro mechanical system) (micro-electronic mechanical system, MEMS) a kind of micro electro mechanical swing formula catoptron (MEMS oscillating mirror) structure of technology formation, because described photoscanning galvanometer can be used present known technology and finish design, and the non-again feature of the present invention of its body place is not so describe its structure in detail at this.
The light scanning apparatus 60 of laser indication device 1 selects to utilize the photoscanning galvanometer 61/62 of an one dimension (1D) swing or two one dimensions (1D) swing or a two dimension (2D) swing to constitute, its fundamental purpose provides the laser indication device that can throw different images and need and select for the visual individual's use of user, only be provided with an one dimension (1D) swing photoscanning galvanometer 61 and can throw the straight line laser indication device as shown in Figure 3 of a single luminous point (figure does not show) or a controllable size (length) as selection, or selection is provided with two one dimensions (1D) swing photoscanning galvanometer 61 or a two dimension (2D) is swung photoscanning galvanometer 62 and can be throwed single luminous point (figure does not show) or the straight line of a controllable size (length) or the ellipse of a controllable size, circular, or other Lissajou's figure various images such as Fig. 4 such as (Lissajous pattern), 5, laser indication device shown in 7; Though the light scanning apparatus 60 of above-mentioned each laser indication device can design and have different photoscanning galvanometers 61/62 again, but the present invention is characterized in that described laser indication device all can be by the control of described man-machine control interface 20 as button or knob etc., the straight line that can select to throw a single luminous point (figure does not show) or a controllable size in real time for the user as shown in Figure 3, or throw the ellipse of a controllable size, circular, or other Lissajou's figure various images such as Fig. 4 such as (Lissajous pattern), Fig. 5, shown in Figure 7, to promote the service efficiency and the selectivity of laser indication device.
With reference to shown in Figure 2, it is the frequency corresponding relation figure (longitudinal axis is an amplitude, and transverse axis is a sweep frequency) of employed photoscanning galvanometer (61,62) in the light scanning apparatus 60 of the present invention.Can further understand frequency/phase control module 30, drive the relation between energy control module 40 and light scanning apparatus 60 threes by Fig. 2: in Fig. 2, resonant frequency fr is meant the motion frequency when scanning galvanometer is at peak swing when the fixed drive energy, E1 is the first driving energy, E2 is the second driving energy, and wherein the E2 height is at E1; F1 is first driving frequency, and f2 is second driving frequency, and wherein f2 is than the resonant frequency fr of f1 near scanning galvanometer; To be scanning galvanometer driving ENERGY E 1, scanning angle when driving frequency is f1 to θ 1; To be scanning galvanometers driving ENERGY E 1, scanning angle when driving frequency is f2 to θ 2; Scanning galvanometer is when fixing motion frequency, and its scanning angle and time relation can following formulates:
θ＝θo*sin(2πf*t).
Wherein, f is the motion frequency of scanning galvanometer, and θ o is the peak swing of scanning galvanometer under fixed drive energy and frequency.As shown in Figure 2 the amplitude of scanning mirror and driving frequency, drive the relativeness between the energy, when the fixing motion frequency, the driving energy is big more as: scanning galvanometer, its amplitude is big more; Scanning galvanometer is when the fixed drive energy again, and motion frequency is more near resonant frequency fr, and its amplitude is big more.
Shown in figure 4,5, after laser beam 51 was via two mutually perpendicular one dimensions of kinematic axis (1D) swing photoscanning 61 (as shown in Figure 4) of galvanometer or 62 (as shown in Figure 5) reflection of a two dimension (2D) swing photoscanning galvanometer, the motion of its scanning light beam 52 can be described by following equation:
θx＝θx*sin(2πfx*t).
θy＝θy*sin(2πfy*t+Φ)..
Wherein, θ x is the maximum scan angle of X-axis (horizontal direction), and θ x is the X-axis component of reflection back scanning light beam motion, and fx is the transverse axis motion frequency; θ y is the maximum scan angle of Y-axis (vertical direction), and θ y is the Y-axis component of reflection back scanning light beam motion, and fy is the Z-axis motion frequency, and Φ is the phase differential of the two.
As from the foregoing, behind the condition changings such as amplitude, motion frequency or phase differential between above-mentioned two kinematic axiss, can come change as the control of button or knob etc. by described man-machine control interface 20 as the present invention, then the motor pattern of its scanning light beam 52 can with change, and can project the straight line of various image such as single luminous point or a may command length, or the ellipse of a controllable size, circle or Lissajou's figure various laser images such as (Lissajouspattern), be respectively described below now:
＜1 〉, all have when producing motion with kinematic axis, can not project single luminous point when above-mentioned two scannings; And when having only vertical movement axle (with Y-axis) to produce motion, can throw always line image 70a shown in Fig. 3,9; And need with the user, can be by described man-machine control interface 20 with control or change amplitude (or scanning angle) size of described vertical movement axle (being Y-axis), to reach real-time control or to change the purpose of the length scale of described straight line; At this moment, described two kinematic axiss quite only have a kinematic axis, just, coexist mutually and utilize the photoscanning galvanometer 61 of an one dimension (1D) swing to constitute its light scanning apparatus 60 functions of use as shown in Figure 3.
＜2 〉, when above-mentioned two scannings are identical with motion frequency with the amplitude of kinematic axiss, i.e. θ x=θ y and fx=fy, and the phase differential Φ of the two motion is 90 when spending, and can project a pie chart as 70c as shown in Figure 6A; And with user's needs, can be by described man-machine control interface 20 to control or to change amplitude (or scanning angle) size of described two kinematic axiss, to reach real-time control or to change the purpose of described pie chart as the size of 70c.
＜3 〉, when above-mentioned two scannings are identical with motion frequency with the amplitude of kinematic axiss, i.e. θ x=θ y and fx=fy, and the phase differential Φ of the motion of two kinematic axiss changes 30 into when spending, can project an oblique ellipse pie chart as 70d shown in Fig. 6 B; And need with the user, can be by described man-machine control interface 20 to control or to change amplitude (or scanning angle) size or the phase differential Φ of described two kinematic axiss, to reach real-time control or to change described oblique ellipse pie chart as the size of 70d or the purpose of Aspect Ratio.
＜4 〉, when above-mentioned two scannings with the amplitude differences of kinematic axiss, change into three times of Y-axis amplitude as the amplitude of X-axis, and motion frequency is identical and phase differential is 90 when spending, i.e. θ x ≠ θ y but fx=fy, can project an ellipse pie chart as 70e shown in Fig. 6 C; And with user's needs, can be by described man-machine control interface 20 to control or to change amplitude (or scanning angle) size of described two kinematic axiss, to reach real-time control or to change the purpose of described ellipse pie chart as the size of 70e.
＜5 〉, when above-mentioned two scanning with kinematic axis phase differential fix but motion frequency slightly not simultaneously, be fx ≈ fy, can project a densely covered scanning light beam, the dense intersection of scanning light beam just, the image 70f of two-dimentional Lissajou's figure (Lissajous pattern) shown in Fig. 7 A, 7B; And need with the user, can be by described man-machine control interface 20 with control or change amplitude (or scanning angle) size of described two kinematic axiss, to reach real-time control or to change the purpose of size of the image 70f of described Lissajou's figure (Lissajous pattern).And owing to be the scanning light beam that gathers on the image 70f of two-dimentional Lissajou's figure (Lissajous pattern), the dense intersection of scanning light beam latticed shown in Fig. 7 B just, cause described image 70f to shine formed light district effect just like an electric torch, therefore when the present invention projects the image 70f of two-dimentional Lissajou's figure (Lissajous pattern) of a densely covered scanning light beam, described image 70f can provide the illumination as a relative size zone, makes laser indication device of the present invention have the electric torch functions of use of a may command illumination zone concurrently.
As from the foregoing, corresponding data shown in Figure 2, can be used as the reference frame of setting described man-machine control interface 20, making can be by the selection or the control of described man-machine control interface 20, and via described frequency/phase control module 30, drive energy control module 40 with each photoscanning galvanometer (61 in the described light scanning apparatus 60 of further control, 62) amplitude, frequency and phase place, so that the laser beam 51 that described laser beam generation module 50 is produced can form scanning light beam 52 with a selected scan pattern via light scanning apparatus 60, and can outwards throw with window 11 by the projection on the shell body 10, reach and to select to throw the straight line (as shown in Figure 3) of a single luminous point or a controllable size or throw the ellipse of a controllable size, circular, or other Lissajou's figure various images such as (Lissajous pattern) are (as Fig. 4, shown in 5) purpose, just, the control of 1 image projected size of laser indication device of the present invention can be reached by the amplitude (or scanning angle θ) that changes described light scanning apparatus 60, and increase or the minimizing of the big I of amplitude (or scanning angle θ) by the driving energy that drives energy control module 40 and controlled changes, also can change driving frequencies by frequency/phase control module 30, make its away from or near each photoscanning galvanometer (61 in the light scanning apparatus 60,62) resonant frequency (fr) and reaching; And its amplitude (or scanning angle θ) increases when driving the fixing and driving frequency (f1 as shown in Figure 2 or f2) of energy (E1 as shown in Figure 2 or E2) near resonant frequency (fr), and anti-then amplitude (or scanning angle θ) reduces; So, the user can be by the control of man-machine control interface 20, can select to throw single luminous point, or straight line, ellipse, circle or other the Lissajou's figure various images such as (Lissajous pattern) of projection controllable size, to promote the service efficiency of laser indication device.
The laser projection indication technology of laser indication device 1 of the present invention is the selection of each photoscanning galvanometer 61,62 in the utilization light scanning apparatus 60, and can control the size of projects images in real time by the amplitude of controlling described scanning galvanometer 61,62, reach and can clearly indicate privileged site (scope), can increase the marker location accuracy and improve results of use such as vision impression; Now enumerate each embodiment and be respectively described below:
＜the first embodiment 〉
With reference to shown in Figure 3, it is that the present invention utilizes the photoscanning galvanometer 61 of an one dimension (1D) swing and throws the structural representation of the adjustable rectilinear of a length (transverse width) as 70a; Wherein, the laser beam 51 that laser beam generation module 50 is produced can be via described photoscanning galvanometer 61 with the scan pattern (present embodiment promptly is to swing with the vertical movement axle of described photoscanning galvanometer 61) once selected amplitude, and formation scanning light beam 52 and the rectilinear that is projected to an adjustable in length are as 70a; Described again rectilinear can be adjusted by the big or small control of amplitude (or scanning angle θ) of control photoscanning galvanometer 61 as the length of 70a, make the rectilinear can be with being subjected on the indicator diagram (or object) 80 one to wait to indicate the range size at position 81 to be adjusted to suitable size as 70a, and the big I of the amplitude of described photoscanning galvanometer 61 (or scanning angle θ) is by the control of man-machine control interface 20, and then controls described frequency/phase control module 30 and reach with described driving energy control module 40.
＜the second embodiment 〉
With reference to shown in Figure 4, it is that the present invention utilizes the photoscanning galvanometer 61 of two one dimensions (1D) swing and throws the structural representation of the whole ellipse pie chart of an adjustable size as 70b; Wherein, the scanning kinematic axis of the photoscanning galvanometer 61 of described two one dimensions (1D) swing is mutual homeotropic alignment; Described again ellipse pie chart is adjusted as the size of amplitude (or scanning angle θ) that the size (comprising the vertical, horizontal width) of 70b can be by two photoscanning galvanometers 61, with can be with being subjected on the indicator diagram (or object) 80 one to wait to indicate the range size at position 81 to be adjusted to suitable size; The big I of the amplitude out of the ordinary of described again two photoscanning galvanometers 61 (or scanning angle θ) is by the selection or the control of man-machine control interface 20, and then controls described frequency/phase control module 30 and reach with driving energy control module 40.
＜the three embodiment 〉
With reference to shown in Figure 5, it is that the present invention utilizes the photoscanning galvanometer 62 of a two dimension (2D) swing and throws the structural representation of the whole ellipse pie chart of an adjustable size as 70b; Wherein, two kinematic axiss of the photoscanning galvanometer 62 of described two dimension (2D) swing are mutual homeotropic alignments, cause its scan pattern and utilize the photoscanning galvanometer of two one dimensions (1D) swing identical with second embodiment; Described again ellipse pie chart is adjusted as the size of amplitude out of the ordinary (or scanning angle θ) that size (the comprising the vertical, horizontal width) ratio of 70b can be by two kinematic axiss on the photoscanning galvanometer 62, being subjected on the indicator diagram (or object) 80 one to wait to indicate the range size at position 81 to be adjusted to suitable size with one; The size of the amplitude out of the ordinary of two kinematic axiss of described again photoscanning galvanometer 62 (or scanning angle θ) can be by the selection or the control of man-machine control interface 20, and then control described frequency/phase control module 30 and reach with driving energy control module 40.
Among above-mentioned second and third embodiment, described ellipse pie chart as the size (comprising the vertical, horizontal width) of 70b or ratio be big or small or its frequency, phase differential that can be by the amplitude out of the ordinary (or scanning angle θ) of two mutual vertical movement axles on two photoscanning galvanometers 61 or the photoscanning galvanometer 62 change and with change, make scanning light beam 52 can project a pie chart as 70c as shown in Figure 6A or different ellipse pie charts as 70d, 70e (being similar to) at 70b shown in Fig. 6 B, Fig. 6 C; As from the foregoing, the size of institute of the present invention image projected or ratio can be passed through size or its frequency of the amplitude out of the ordinary (or scanning angle θ) of two mutual vertical movement axles, the change that differs and with change, and above-mentioned described amplitude (or scanning angle θ), frequency, the change of phase differential can be reached by the selection or the control of man-machine control interface 20, for example on described man-machine control interface 20, can design and comprise three buttons or knob to adjust amplitude (or scanning angle θ) respectively, frequency and phase differential, for the user can be by described three buttons or knob control with change (adjustment) amplitude (or scanning angle θ) respectively, frequency or phase differential, but with the size or the ratio of real time altering institute projects images.
＜the four embodiment 〉
Shown in Fig. 7 A, 7B, it is respectively the present invention's photoscanning galvanometer 61 of utilizing the swing of two one dimensions to project a sharp Sa as the structural representation of the image of (Lissajous) figure and two scanning motion axles are vertical mutually and amplitude is identical, the image 70f synoptic diagram of the Lissajou's figure that throwed when phase differential 90 degree, X-axis frequency are 1.05 times of Y-axis frequencies; When two scanning with the phase differential of kinematic axis fix but motion frequency slightly not simultaneously, be fx ≈ fy, wherein fx is that transverse axis motion frequency, fy are the Z-axis motion frequency, can project one gather scanning light beam (52) just the image 70f of the two-dimentional Lissajou's figure (Lissajous pattern) of the dense intersection of scanning light beam (52) shown in Fig. 7 B; And need with the user, can be by described man-machine control interface 20 with control or change amplitude (or scanning angle) size of described two kinematic axiss, to reach real-time control or to change the purpose of size of the image 70f of described Lissajou's figure (Lissajous pattern).And owing to be the scanning light beam that gathers on the image 70f of two-dimentional Lissajou's figure (Lissajous pattern), the dense intersection of scanning light beam just, cause described image 70f to shine formed light district effect just like an electric torch, therefore when the present invention projects the image 70f of two-dimentional Lissajou's figure (Lissajous pattern) of a densely covered scanning light beam, described image 70f can provide the illumination as a relative size zone, makes laser indication device of the present invention have the electric torch functions of use of a may command illumination zone concurrently.
＜the five embodiment 〉
With reference to Fig. 8 A, shown in Fig. 8 B, it is a structure of utilizing the 4th above-mentioned embodiment, further utilize a shield 90 again, establish tool one specific pierced pattern 91 arrowhead form as shown in the figure on it, make appropriate position on its light path that is arranged on scanning light beam 52 outside projections, as the periphery that is set in the projection window 11 of shell body 10 is located, make the image 70f of the Lissajou's figure (Lissajous pattern) of the controllable size that projected among the 4th above-mentioned embodiment and densely covered scanning light beam, can project image 70g such as Fig. 8 A of the described specific pierced pattern 91 of a densely covered scanning light beam again via the pierced pattern 91 of described shield 90, shown in the 8B, with the variability and the selectivity of the projects images that increases laser indication device of the present invention; But again because described shield 90 low-cost productions and can variation design, thus can be under the condition of hanging down manufacturing cost, and the service efficiency of enhancement laser indication device of the present invention is with relative lifting competitiveness of the present invention and popularization.
In sum, laser indication device of the present invention has following advantage compared with the prior art:
＜1〉the present invention can utilize an one-dimensional scanning galvanometer to project line image always with the laser light reflective scan with incident, and energy or frequency by the controlling and driving scanning galvanometer amplitude that changes scanning galvanometer, can adjust the length that projects the rectilinear picture in real time for the user, to reach the purpose of emphasizing to indicate the position.
＜2〉the present invention can utilize the one-dimensional scanning galvanometer of two kinematic axis homeotropic alignments, except that reaching aforementioned＜1〉function, by controlling frequency, phase differential, the amplitude of the motion of two scanning galvanometers, be that the may command projects images is various Lissajou's figures such as circle, ellipse, straight line, point, oblique line, grid, and can control in real time or change its size, reach the effect of specific indication; For example control projects the ellipse pie chart picture of a controllable size, and containing object or the image that is labeled, the user need not mobile gesture, can reach the purpose of accurately emphasizing.
＜3〉when the phase differential of the present invention's two scanning galvanometers fix but motion frequency slightly not simultaneously, promptly during fx ≈ fy, may command projects the image of a Lissajou's figure that constantly changes, and visually can form the animation effect of rotation; Just, can be by controlling the image that described frequency difference can produce the two-dimentional Lissajou's figure of the dense intersection of one scan light beam (as the latticed scanning light beam that gathers), the image of described Lissajou's figure is just like the light image of a slice (zone) formula; When dress Lissajou's figure image during, can project the image of the specific pattern of described densely covered scanning light beam in the distance again through the shield of the specific pierced pattern of a tool; And because the making of shield is simple, therefore can make, make the present invention can simple and easyly reach the effect of the different specific pattern light images of projection by the shield of specific pierced pattern in low-cost mode.
＜4〉the present invention uses a two dimension swing photoscanning galvanometer (62) that possesses two kinematic axis functions, aforementioned＜2 that coexist such as can reach〉result of use, but can reduce the complexity and the device volume of assembling relatively.
＜5〉laser indication device of the present invention can be carried, for opening use when needed at any time, and can control pattern or its size of projects images in real time, comprise single luminous point, or the straight line (as shown in Figure 9) of a controllable size (length), or the ellipse of a controllable size (as shown in figure 10), circle or Lissajou's figure various images such as (Lissajous pattern).
The above only is preferred embodiment of the present invention, only is illustrative for the purpose of the present invention, and nonrestrictive; Those skilled in the art is understood, and can carry out many changes to it in the spirit and scope that claim of the present invention limited, revise, even equivalent transformation, but all will fall within the scope of protection of the present invention.
Claims (7)
- The pattern of a may command projected image or the size laser indication device, it is characterized in that: comprise a shell body, a man-machine control interface, a frequency/phase control module, driving energy control module, a laser beam generation module and a light scanning apparatus, wherein:Described shell body which is provided with a projection and outwards throws for scanning light beam with window; Described man-machine control interface, be provided in a side of on the outside of described shell body, for the user by outer control be located at described shell body inside the frequency/phase control module, drive energy control module, laser beam generation module and light scanning apparatus, with the pattern of selecting the outside image projected of laser scanning light beam size with the described image of control;Described frequency/phase control module, it is located at described shell body inside, by described man-machine control interface control or change the drive pattern of described frequency/phase control module, comprise the size and the phase differential that change its frequency, and in order to control described driving energy control module;Described driving energy control module, it is located at described shell body inside, control by described frequency/phase control module comprises changing the size that it drives energy to control the driving energy model of described driving energy control module, and in order to control described light scanning apparatus;Described laser beam generation module, it is located at described shell body inside, by the generation pattern of described man-machine control interface with the control laser beam, and described laser beam is incident upon described light scanning apparatus, and the scanning motion pattern that cooperates described light scanning apparatus is to form scanning light beam with laser beam flying;Described light scanning apparatus, it is located at described shell body inside, utilize the photoscanning galvanometer of an one dimension swing to constitute, control the pattern of its scanning by described frequency/phase control module or driving energy control module, comprise the amplitude size that changes described photoscanning galvanometer, make laser beam flying form scanning light beam, and outwards be projected to an image with window via the projection on the shell body;Wherein, the control of described image size is reached by the amplitude size or the scanning angle that change described light scanning apparatus;Wherein, the control of described amplitude size is reached by the increase or the minimizing that drive energy, also can by change driving frequency make its away from or reach near the resonant frequency of light scanning apparatus.
- The pattern of a may command projected image or the size laser indication device, it is characterized in that: comprise a shell body, a man-machine control interface, a frequency/phase control module, driving energy control module, a laser beam generation module and a light scanning apparatus, wherein:Described shell body which is provided with a projection and outwards throws for scanning light beam with window;Described man-machine control interface, be provided in a side of on the outside of described shell body, for the user by outer control be located at described shell body inside the frequency/phase control module, drive energy control module, laser beam generation module and light scanning apparatus, with the pattern of selecting the outside projects images of laser scanning light beam size with the described image of control;Described frequency/phase control module, it is located at described shell body inside, by described man-machine control interface control or change the drive pattern of described frequency/phase control module, comprise the size and the phase differential that change its frequency, and in order to control described driving energy control module;Described driving energy control module, it is located at described shell body inside, control the driving energy model of described driving energy control module by described frequency/phase control module, comprise changing the size that it drives energy, and in order to control described light scanning apparatus;Described laser beam generation module, it is located at described shell body inside, by man-machine control interface to control the generation pattern of its laser beam, and described laser beam can be incident upon light scanning apparatus, and the scanning motion pattern that cooperates described light scanning apparatus is to form scanning light beam with laser beam flying;Described light scanning apparatus, it is located at described shell body inside, utilize the photoscanning galvanometer of two one dimension swings or the photoscanning galvanometer of a two dimension swing to constitute, control its scanning motion pattern by described frequency/phase control module or driving energy control module, comprise the amplitude size that changes described photoscanning galvanometer, make laser beam flying form scanning light beam, and outwards be projected to an image with window via the projection on the shell body;Wherein, the photoscanning galvanometer of described one dimension swing is provided with a kinematic axis, and the photoscanning galvanometer of described two dimension swing is provided with the kinematic axis of two mutual homeotropic alignments;Wherein, the control of described image size is reached by the amplitude size or the scanning angle that change described light scanning apparatus;Wherein, the control of described amplitude size can be reached by the increase or the minimizing that drive energy, also can by change driving frequency make its away from or reach near the resonant frequency of light scanning apparatus.
- 3. according to the pattern of the described may command projected image of claim 2 or the laser indication device of size, it is characterized in that: it can make the kinematic axis in two kinematic axiss of photoscanning galvanometer of two kinematic axiss of photoscanning galvanometer of described two one dimensions swing or described two dimension swing produce swing, to project line image always, and can control the amplitude size of a described kinematic axis by described man-machine control interface, to control the width size of described rectilinear picture.
- 4. according to the pattern of the described may command projected image of claim 2 or the laser indication device of size, it is characterized in that: it can make the amplitude of two kinematic axiss of photoscanning galvanometer of two kinematic axiss of photoscanning galvanometer of described two one dimensions swing or described two dimension swing identical with motion frequency and to make the phase differential of the two motion be 90 to spend, to project a pie chart picture, and can control the amplitude size of described two kinematic axiss by described man-machine control interface, to control the size of described pie chart picture.
- 5. according to the pattern of the described may command projected image of claim 2 or the laser indication device of size, it is characterized in that: its can make two kinematic axiss of photoscanning galvanometer of described two one dimensions swing or described two dimension swing the photoscanning galvanometer two kinematic axiss the amplitude difference and motion frequency is identical, to project an ellipse pie chart picture, and can control the amplitude size of described two kinematic axiss by described man-machine control interface, to control the size of described ellipse pie chart picture.
- 6. according to the pattern of the described may command projected image of claim 2 or the laser indication device of size, it is characterized in that: it can make the phase differential of two kinematic axiss of the photoscanning galvanometer of two kinematic axiss of photoscanning galvanometer of described two one dimensions swing or described two dimension swing fix and motion frequency is slightly different, to project an image of two-dimentional Lissajou's figure (Lissajous pattern) that gathers scanning light beam or the dense intersection of scanning light beam, and can control the amplitude size of described two kinematic axiss by described man-machine control interface, with the size of the image of controlling described Lissajou's figure.
- 7. according to the pattern of the described may command projected image of claim 6 or the laser indication device of size, it is characterized in that: comprise that also a shield is arranged on the light path of the outside projection of scanning light beam, and establish tool one specific pierced pattern on the described shield, make the image of described two-dimentional Lissajou's figure can project the image of a described specific pierced pattern and densely covered scanning light beam via the pierced pattern of described shield.
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| CN2007101628198A CN101408672B (en) | 2007-10-10 | 2007-10-10 | Laser indication device |
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| CN2007101628198A CN101408672B (en) | 2007-10-10 | 2007-10-10 | Laser indication device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9470888B2 (en) | 2014-04-03 | 2016-10-18 | Industrial Technology Research Institute | Driving apparatus, driving method thereof, and scanning mirror |
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| CN103176592B (en) * | 2011-12-22 | 2015-09-30 | 光宝科技股份有限公司 | Virtual projection input system and input detecting method thereof |
| CN102722065B (en) * | 2012-04-28 | 2014-08-20 | 西北工业大学 | Projection display method based on Lissajou figure scanning mode |
| CN104729488A (en) * | 2015-04-02 | 2015-06-24 | 哈尔滨光学仪器厂有限责任公司 | Device for marking operation area and positioning method |
| CN105139719B (en) * | 2015-10-12 | 2017-08-01 | 华中科技大学 | It is a kind of directly to produce the electronic teacher pointer that dynamic emphasizes identification pattern |
| US10921431B2 (en) * | 2017-10-19 | 2021-02-16 | Cepton Technologies Inc. | Apparatuses for scanning a lidar system in two dimensions |
| CN107990847A (en) * | 2017-12-18 | 2018-05-04 | 中国矿业大学(北京) | A kind of digging laneway profile based on laser optical path adjustment indicates method and device |
| CN108922461B (en) * | 2018-07-04 | 2021-09-14 | 歌尔光学科技有限公司 | Micro laser projector, signal processing method and device based on micro laser projector |
| CN109254297B (en) * | 2018-10-30 | 2023-09-08 | 杭州欧镭激光技术有限公司 | Optical path system of laser radar and laser radar |
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| US5450148A (en) * | 1994-04-18 | 1995-09-12 | Yu S. Lin | Laser pointer with selectable pointer patterns |
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