US20160069640A1 - Apparatus and method for self-adjusting, range finding aim point for rifle mounting optics - Google Patents
Apparatus and method for self-adjusting, range finding aim point for rifle mounting optics Download PDFInfo
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- US20160069640A1 US20160069640A1 US14/849,656 US201514849656A US2016069640A1 US 20160069640 A1 US20160069640 A1 US 20160069640A1 US 201514849656 A US201514849656 A US 201514849656A US 2016069640 A1 US2016069640 A1 US 2016069640A1
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- target
- reticle
- range
- bullet
- firearm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G1/00—Sighting devices
- F41G1/38—Telescopic sights specially adapted for smallarms or ordnance; Supports or mountings therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G3/00—Aiming or laying means
- F41G3/06—Aiming or laying means with rangefinder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G3/00—Aiming or laying means
- F41G3/06—Aiming or laying means with rangefinder
- F41G3/065—Structural association of sighting-devices with laser telemeters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G3/00—Aiming or laying means
- F41G3/08—Aiming or laying means with means for compensating for speed, direction, temperature, pressure, or humidity of the atmosphere
Abstract
A self-adjusting range finding optic system for finding aim for a rifle by acquiring the range to a target, calculating the estimated bullet drop based on the range to the target, adjusting the reticle to compensate for the estimated bullet drop and displaying the adjusted reticle on the optic to allow for an accurate shot.
Description
- The present invention relates to apparatus and method for finding aim for a firearm, and more particularly, to self-adjusting rifle-mounted optics.
- Modern war fighters, i.e., soldiers, snipers, marksman use many different types of rifle-mounted optics to more effectively aim and engage a target while compensating for bullet drop, or the pull of gravity exerted on a bullet in flight that causes the bullet to drop to the ground. Current solutions require a user to compensate for bullet drop by manually lifting the barrel at his/her own discretion to ensure that the round reaches and strikes the target at the desire location.
- Currently, there are numerous rifle-mounted optics that attempt to compensate for bullet drop. Some optics provide reticles that are formed by physical tic marks on the internal optics of the sight, and that allow the user to estimate the effect of bullet drop at an estimated distance. Examples of these can be seen in scout/sniper optics, scopes or telescopic sights. However, the tic marks are oftentimes based off of physical characteristics of the target (i.e. shoulder width) that may drastically vary from target to target or from the user's point of view. Other common war fighter optics, red-dot sights and popular electro-optic sights utilize a see-through lens with a simple red-dot reticle that a user zeroes in on a target. These sights do not provide tics or any other form of adjustment other than intuition on the user's behalf. Again the user estimates the distance to the target, i.e., “range distance” and also the effect of bullet drop at that range distance.
- Laser range finders are a common tool utilized by soldiers, snipers, marksman and relate to many aspects of the duties of the war fighter. To date there has been no combination of a range finder and a rifle-mounted optic that provides range finding ability with automated bullet drop compensation.
- Wherefore, it is an object of the present invention to overcome the above mentioned shortcomings and drawbacks associated with the prior art.
- A further object of the present invention is to provide rifle-mounted optics having a range finding capability to detect the distance to the target and automatically adjust the reticle to compensate for the bullet-drop.
- Yet another object of the present invention is to enable automated calculation of estimated bullet drop and the real-time visual projection of an adjusted reticle onto the display of the optic, thereby enhancing the accuracy and efficiency of shooting by quick and accurate range-to-target identification, reticle adjustment and shot placement assistance. By providing the technology to calculate for bullet drop and an auto adjusting reticle on the optic, the user only has to focus on placing the fixed reticle on the center-mass of the target. This is a significant advantage to war fighters and increases the chances that soldiers may more safely and effectively engaged enemies.
- A further object of the present invention is to enable any soldier equipped with this self-adjusting rifle-mounted optic system to call in close air support (CAS) and indirect fire (including mortars and artillery) quicker and with greater accuracy than the current need for manual estimation, decreasing the need for additional weight bearing equipment designed and currently utilized to provide this ability.
- The present invention relates to a method for finding aim for a rifle comprising the steps of: acquiring a range to a target; calculating an estimated bullet drop based on the range to the target; adjusting a reticle to compensate for the estimated bullet drop; and displaying the adjusted reticle on the optic to allow for an accurate shot.
- The present invention also relates to a self-adjusting optic system for mounting on a firearm that comprises a range finder for acquiring a range to a target. A processor which calculates an estimated bullet drop based on the acquired range to the target. A reticle which is adjustable so as to compensate for the estimated bullet drop based on the acquired range to the target. An optic having a display device on which the adjustable reticle is displayed to facilitate an accurate shot with the firearm.
- The present invention also relates to method for finding aim for a firearm comprising steps of: initially aiming the firearm to align a fixed reticle in an optical scope of the firearm with a desired point of impact of a bullet on the target; actuating a range finder with a pressure switch to acquire a range to the target; transmitting the acquired range to the target to a processor; calculating, with the processor, a bullet drop based on the acquired range to the target; determining, with the processor, a position on a display device at which an adjusted reticle is to be displayed in the optical scope based on the calculated bullet drop; displaying the adjusted reticle on the display device in the optical scope in the determined position, the adjusted reticle defining an actual point of impact of the bullet on the target; and realigning the firearm such that the adjusted reticle is aligned with the desired point of impact of the bullet on the target.
- The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate various embodiments of the invention and together with the general description of the invention given above and the detailed description of the drawings given below, serve to explain the principles of the invention. The invention will now be described, by way of example, with reference to the accompanying drawings in which:
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FIG. 1 is a diagrammatic view of a firearm on which a self-adjusting range finding optic system according to the invention is mounted; -
FIG. 2 is a plan view of the self-adjusting range finding optic system according to the invention and a portion of the firearm; -
FIG. 3 is diagrammatic view of the self-adjusting range finding optic system according to the invention; -
FIG. 4 is a diagram illustrating a line of sight through the self-adjusting range finding optic system and a target while range is being acquired; -
FIG. 4A is a diagram of the view field of an optical scope from shooter's point of with the firearm oriented as shown inFIG. 4 while range is being acquired; -
FIG. 5 is a diagram illustrating the line of sight through the self-adjusting range finding optic system as shown inFIG. 4 with reticle adjustment; -
FIG. 5A is a diagram of the view field of an optical scope from shooter's point of with the firearm aimed as shown inFIG. 5 with reticle adjustment; -
FIG. 6 is a diagram illustrating the line of sight through the self-adjusting range finding optic system following user adjustment; -
FIG. 6A is a diagram of the view field of an optical scope from shooter's point of with the firearm aimed as shown inFIG. 5 following user adjustment; and -
FIG. 7 is schematic diagram illustrating a method for using a self-adjusting range finding optic system. - It should be understood that the drawings are not necessarily to scale and that the disclosed embodiments are sometimes illustrated diagrammatical and in partial views. In certain instances, details which are not necessary for an understanding of this disclosure or which render other details difficult to perceive may have been omitted. It should be understood, of course, that this disclosure is not limited to the particular embodiments illustrated herein.
- The present invention will be understood by reference to the following detailed description, which should be read in conjunction with the appended drawings. It is to be appreciated that the following detailed description of various embodiments is by way of example only and is not meant to limit, in any way, the scope of the present invention.
- Turning now to
FIGS. 1-3 , a brief description concerning the various components of the present invention will now be briefly discussed. As can be seen,FIG. 1 depicts afirearm 2 including atrigger 4 which can be actuated by a user to fire a bullet through abarrel 6 and along a trajectory towards a target. Amagazine 8 holds a number of cartridges such that when a bullet is discharged from the cartridge located in the firing chamber 10 at the end of thebarrel 6, the now empty cartridge is ejected from the firing chamber 10 and a new cartridge is transferred from themagazine 8 and loaded into the firing chamber 10. Cartridges hold the bullet and enclose an amount of propellant, also called load which is ignited to shoot the bullet from thefirearm 2. Asight 12 is mounted to thefirearm 2 and comprises a self-adjusting range findingoptic system 13 having asight housing 14, anoptical scope 16, arange finder 18, adisplay screen 20, aprocessor 22, a memory unit 24, apower switch 26, a source ofelectrical power 28, auser input device 30, anelectronic port 32, and variety of different sensors and instrumentation, which will be described in more detail below. - The
sight housing 14 is generally mounted at the top of thefirearm 2 in the illustrated manner such that the line ofsight 34 through the optical scope 16 (illustrated as a dashed line) and the axis of the barrel 36 (illustrated as a solid line) are at least substantially parallel. The sight housing 14 according to the current invention houses the elements of the self-adjusting range findingoptic system 13 including theoptical scope 16,processor 22, thedisplay screen 20 and theelectronic port 32. Therange finder 18,power switch 26,power source 28,user input device 30 as well as the variety of different sensors and instrumentation can either be housed within or integrated on thesight housing 14. It is however possible that one or more of these elements can be independent of the'self-adjusting range findingoptic system 13 and connected to thereto through thesight housing 14 by means of aninput connection 38 which accepts simple communication, for example a USB connection. - An
electrical power source 28 can be either located within thesight housing 14 and connected, via electrical leads, to the elements arranged within thesight housing 14 or can be located outside thesight housing 14 and connected to the self-adjusting range findingoptic system 13 by means of a power cable that can be received by apower port 42. Thepower source 28 is formed by one or more removable batteries, the number and electrical power of which is generally based upon the configuration of the self-adjusting range findingoptic system 13, It is to be appreciated that thepower source 28 can comprise a permanently enclosed battery that can be recharged via thepower port 42. - The supply of electrical power to the self-adjusting range finding
optic system 13 can be controlled by apower switch 26 such as apressure switch 26′. Asswitches power source 28 to an electrical consumer are generally well known, the electrical connections between theelectrical power source 28 and the self-adjusting range findingoptic system 13 will not be discussed in further detail here. In one variation of the self-adjusting range findingoptic system 13, thepower switch 26 is arranged on thesight housing 14. In another variation, thepower switch 26′ is arranged at a location remote from thesight housing 14. It is beneficial to position thepower switch 26 at a location that does not necessitate the user from diverting his/her view from the target so as to activate theswitch 26′ for example at a position adjacent thetrigger guard 25. In either case theelectrical power switch power source 28 to the elements of the self-adjusting range findingoptic system 13. In another variation, a pair power switches 26, 26′ can be connected to the self-adjusting range findingoptic system 13. In this case, the self-adjusting range findingoptic system 13 can have a first power switch located 26 located on thesight housing 14 which is utilized to initially “power up” the self-adjusting range findingoptic system 13. Thesecond power switch 26′ is formed as a pressure switch which communicates with the self-adjusting range findingoptic system 13 by way of a communication line 5. The pressure switch 26′ is utilized to “wake up” the self-adjusting range findingoptic system 13 from a “sleep mode.” A sleep mode of type of operation is utilized in a manner to conserve electrical energy when the self-adjusting range findingoptic system 13 is not actively functioning. The pressure switch 26′ can be arranged near thetrigger 4 within reach of the trigger finger on thefirearm 2 so as to “wake up” the self-adjusting range findingoptic system 13 at a time when the user is preparing to engage atarget 48. In this case, thepressure switch 26′ is located adjacent thetrigger guard 25 such that when the user lifts and initially aims thefirearm 2 in preparation for engaging thetarget 48, the user is able to press thepressure switch 26′ with his/her trigger finger to activate the self-adjusting range findingoptic system 13 without significant movement of the hand from it's current position. The pressure switch 26′ can communicate with signalingunit 44 such when thepressure switch 26′ is actuated, the signalingunit 44 issues an indicator signal to notify the user, for example, by means of a visual, audible or tactile signal that the self-adjusting range findingoptic system 13 has been powered on. That is to say, when thepressure switch 26′ is actuated, a light can be illuminated or a beep or click can be produced. - The
sight 12 can be implemented using a layout that is common to many current war fighters and can include a telescopic sight such as scout/sniper sight which provides a fixed power magnification level, e.g., 3× magnification. The self-adjusting range findingoptic system 13 can include a multifunction laser/illumination device, which can be connected to or rather integrated within the telescopic sight for enhancing precise aiming of thefirearm 2, target acquisition and illumination of a target and/or specific area. The multifunction laser device can include a red light laser and/or an IR laser. A red light laser is visible and can therefore assist the user with aiming the firearm when sighting the target with the naked eye. To sight the target in this manner, the user turns on the red laser light and points the firearm at the target. When viewed through the sight, the user is able to clearly see and align a red laser dot at the target. If properly calibrated for distance to the target, the red laser dot viewed on the target signifies the point of impact. One drawback of the red light laser is that it is visible by the target, thus providing the target with a warning of the impending shot. As the red light laser is visible, the position of the user may also easily be detected and therefore compromised. The IR laser on the other hand emits infra-red laser light which is generally not visible. The IR laser can be used in combination with a night-vision system which enables the infra-red light to be seen by the user. The IR laser/night-vision system together make it possible to illuminate targets in low light conditions without the target detecting visible light. Such a multifunction laser device can be integrated with the telescopic sight within thesight housing 14 or can be remote from the telescopic sight. If a remote multifunction laser device is utilized with the self-adjusting range findingoptic system 13, the laser device will include an output cable or the like that is able to be connected to the telescopic sight by way of theinput connection 38. The multifunction laser/illumination device further includes a floodlight which can be used in dark or rather low-light situations to assist in identifying targets. - An important aspect of the self-adjusting range finding
optic system 13 is therange finder 18. As indicated above therange finder 18 can be arranged within or remote from thesight housing 14, but in either case therange finder 18 is connected to or integral with theprocessor 22. It is to be appreciated that therange finder 18 can also comprise theprocessor 22. If therange finder 18 is remote from thesight housing 14, therange finder 18 will communicate with theprocessor 22 by way of theinput connection 38. Therange finder 18 can be a laser range finder which is utilized in conjunction with the multifunction laser device described above or therange finder 18 can be used instead the multifunction laser device. In the case that the range finder is utilized in conjunction with the multifunction laser device, theprocessor 22 communicates with and coordinates the function of both, such that the multifunction laser device will be controlled so as to emit coded-laser pulses 46, while therange finder 18 is controlled by theprocessor 22 to detect the reflectedlaser light pulses 46′ and start and stop atimer 48 as discussed below in further detail. If the multifunction laser device is however not used in combination with therange finder 18, therange finder 18 will perform both of these functions. In general, thelaser range finder 18 can be actuated by thepressure switch 26′ when the user initially aims thefirearm 2 at thetarget 48. - When actuated the
laser range finder 18 directs focused coded pulses oflaser light 46 at thetarget 48 and simultaneously starts aconnected timer 48. Upon striking thetarget 48, the pulses oflaser light 46 reflect off thetarget 48 and are directed back toward the user. That is to say, when the pulses of laser light hit 46 thetarget 48, a portion of the laser light is reflected back to thelaser range finder 18 mounted on thefirearm 2. Thelaser range finder 18 has alight sensor 50 which detects the reflected pulses oflaser light 46′. Upon detecting the reflectedlaser light 46′, thelaser range finder 18 stops thetimer 48 and records the amount of time that has lapsed from the time the pulses oflaser light 46 were emitted by thelaser range finder 18 to the time the reflected pulses oflaser light 46′ were detected by thelight sensor 50. As the speed at which light travels is known, thelaser range finder 18 can calculate the distance to thetarget 48 based on the amount of time that had lapsed from the time the pulses oflaser light 46 were emitted by the laser range finder. 18 to the time reflected pulses oflaser light 46′ were detected by thelight sensor 50. The distance from therange finder 16, i.e. the user, to thetarget 48 is hereinafter referred to as the “range distance”. - It is to be appreciated that the
range finder 18 can determine the range distance at a time selected by the user by actuating thepressure switch - The inventive self-adjusting range finding
optic system 13 utilizes anoptical scope 16 having a fixedreticle 52 and adisplay screen 20 which is able to display avariable reticle 54. The position at which thevariable reticle 54 is displayed on thedisplay screen 20 is controlled by theprocessor 22, such that the position of thevariable reticle 54 in the view field of the optical scope can be adjusted automatically depending on determined range distance range distances and, optionally, based on a number of other factors to be discussed below. - The
display screen 20 enables the user to view thevariable reticle 54 in theoptical scope 16 in addition to various other data and information that may be relevant to precise aiming of thefirearm 2 on thetarget 48. In one variation of the self-adjusting range findingoptic system 13, a “honeycomb” attachment of a telescopic sight or scope could be used as adisplay screen 20 on which thevariable reticle 54 as well as other data and information, e.g., distance, direction and/or location are projected. Such adisplay screen 20 enables the user to view thevariable reticle 54 and pertinent other data and information while at the same time maintaining a view of thetarget 48. Another variation of the self-adjusting range findingoptic system 13 may utilize an electro-optical sight having a 3× attachment as thesight 12 which allows the user to look through theoptical scope 16 and adjust the aim of thefirearm 2 based on the position of thevariable reticle 54 in the view field of theoptical scope 16. A further variation may combine an electro-optical sight with a small prism which are used in combination to reflect thevariable reticle 54, data and information from a base onto thedisplay screen 20. In yet a further variation of the self-adjusting range findingoptic system 13, digital optics may be used to digitally project avariable reticle 54 in the sight picture. - In any case a fixed
reticle 52, which may include avertical crosshair 56 and horizontally aligned tick marks 58, is permanently imprinted on or etched in the optics of theoptical scope 16. Thevariable reticle 54 on the other hand is projected as a red dot onto thedisplay screen 20 and can be automatically adjusted in the manner described below so as to compensate for bullet drop based on the determined range distance as well as other factors that are known to cause changes in thetrajectory 60 of a bullet. Although the figures illustrate thevariable reticle 54 as a solid colored dot, it is to be appreciated that thevariable reticle 54 can be displayed in any other form and color, for example crosshairs or an arrow head. The important aspect of thevariable reticle 54 is that it be distinctly visible within the view field. - Before describing the process of automatically adjusting the
variable reticle 54, a number of other factors will be discussed that can impact thetrajectory 60 of a bullet and therefore negatively impact aiming of thefirearm 2 based on the range distance. Such factors can include ballistic information, environmental information and geographic information. In addition to these factors, it is further possible to project system status information onto thedisplay screen 20 such as the remaining supply of power in thepower source 28 or the location coordinates of thetarget 48. - As briefly noted above, ballistic information can be taken into consideration when adjusting the
variable reticle 54 in relation to thetarget 48 or rather aiming thefirearm 2 on thetarget 48. Ballistic information can include the size, shape, weight and grain of a bullet, the muzzle velocity, and perhaps characteristics of thebarrel 6. According to the invention such ballistic information can be input into theprocessor 22 of the self-adjusting range findingoptic system 13 by auser input device 30. Theuser input device 30 can include a keyboard, a number pad, and/or a touchpad and can facilitate communicating such information to theprocessor 22 as well as the other components of the self-adjusting range findingoptic system 13. An external user input device can communicate with theprocessor 22 by theinput connection 38 located in thesight housing 14. In another variant as shown in FIG. 2, theuser input device 30 is integrated into thesight housing 14 and comprises a series ofbuttons 62 which are pressed in correlation to the image shown on aninterface screen 64, such as an LCD that is located on the exterior of thesight housing 14. - The self-adjusting range finding
optic system 13 can further includeenvironmental instrumentation 66 such as sensors that respectively detect environmental and geographic information which might further alter the trajectory of a bullet.Such instrumentation 66 can communicate with theprocessor 22 and can include a barometer for measuring barometric pressure, a thermometer for measuring atmospheric temperature, a hygrometer for measuring the amount of humidity in the atmosphere, a wind vane and anemometer for measuring wind direction and speed, and an altimeter which can detect the altitude or rather the distance above sea level. External instrumentation (not shown) can transmit associated readings, data and information to theprocessor 22 via theinput connection 38 or they may be integrally associated within thesight housing 14 of the self-adjusting range findingoptic system 13. - The self-adjusting range finding
optic system 13 can also havegeographical instrumentation 68 such as an inclinometer which determines the incline/decline of thefirearm 2 with respect to horizontal. As is known, shooting at atarget 48 that is located at an incline or a decline from horizontal with respect to the shooter can alter the range distance. It is therefore desirable that an inclinometer be used in conjunction with thelaser range finder 18 so as to more accurately calculate the range distance. When detected by the inclinometer, the angle of incline/decline with respect to horizontal is transmitted to theprocessor 22 and utilized in the range distance calculation. Thegeographical instrumentation 68 may also include a GPS and/or digital compass which can provide the self-adjusting range findingoptic system 13 with geographic information such as location coordinates and direction orientation that can be relayed by the user when calling in close air support or indirect fire such as mortars and artillery. - The method of using the self-adjusting range finding
optic system 13 will now be described with reference toFIGS. 4-6A .FIGS. 4A , 5A, and 6A depict a series of point-of-view diagrams (according to one embodiment) from the user's perspective looking down theoptical scope 16. AlthoughFIGS. 4A , 5A, and 6A illustrate this embodiment as being implemented on scout/sniper type sight comprising the fixedreticle 52 as described above, it is to be appreciated that the self-adjusting range findingoptic system 13 may be implemented for example on any other common war fighter optics, red-dot sights or an electro-optical sight. - In the following description of the method of adjusting a range finding
optic system 13, it is to be understood that the axis of thebarrel 36 and the line ofsight 34 through theoptical scope 16 always extend from thefirearm 2 parallel with respect to each other. Further the fixedreticle 52 is permanently set in position in the view field of theoptical scope 16. That is to say the fixedreticle 52 does not move in relation to the line ofsight 34 through theoptical scope 16 and is therefore also fixed in position with respect to the axis of thebarrel 36 of thefirearm 2. - To initiate the method, the user raises the
firearm 2 and looks through theoptical scope 16 so as to identify thetarget 48 and adjust thefirearm 2 such that thevertical crosshair 56 and horizontal tick marks 58 of the fixedreticle 52 are approximately centered horizontally on thetarget 48 as seen inFIG. 4A . The user in addition aims the fixedreticle 52 at thetarget 48 such that the fixedreticle 52 is generally aligned with a desired point ofimpact 63 on thetarget 48 in accordance to what the user was trained to zero in on so as to eliminate thetarget 48. The desired point ofimpact 63 on thetarget 48 is identified in theFIGS. 4-5A by means of an open dot. It is also to be appreciated that the user may view thetarget 48 through an optic with target identification. AlthoughFIG. 4A indicates that thelaser range finder 18 has not been yet been activated, as thevariable reticle 54 is not shown in the view field of theoptical scope 16, it is to be understood that thelaser range finder 18 may alternatively be activated prior to the initial identification of thetarget 48 and alignment of the fixedreticle 52 on thetarget 48. Thevariable reticle 54 first appears in the view field theoptical scope 16 when the self-adjusting range findingoptic system 13 is actuated and the range distance is determined. - The user then “wakes up” or rather activates the
laser range finder 18 by actuating thepressure switch 26 inSTEP 1. As described above in more detail, upon being activated, thelaser range finder 18 emits focused, coded pulses oflaser light 46 at thetarget 48 which then strike thetarget 48 and reflect back toward thelaser range finder 18. The reflected pulses oflaser light 46′ are then detected by thelight sensor 50 of thelaser range finder 18 at which point, inSTEP 2, thelaser range finder 18 determines the distance to thetarget 48, i.e., range distance based on the amount of time that it takes for the pulses oflaser light 46 to travel to and return from thetarget 48. Thelaser range finder 18 transmits the determined range distance to theprocessor 22 inSTEP 3. - Depending at least on the determined range distance and the alignment of the fixed
reticle 52 in relation to thetarget 48, theprocessor 22 determines the appropriate location at which thevariable reticle 54 is projected and set into position on thedisplay screen 20 of theoptical scope 16. Once thevariable reticle 54 is set in position with respect to the fixedreticle 52, thevariable reticle 54 and the fixedreticle 52 remain fixed in this arrangement until the bullet is shot, the user reactivates thelaser range finder 18, or it is detected that the range distance has changed. When activated, thevariable reticle 54 is recognized as being the same as the actual point of impact of the bullet on thetarget 48 inSTEP 4 and is illustrated in 5-6 as being a lack dot.FIGS. 5 and 6 show thetrajectory 60 of the bullet based on the determined range distance. As illustrated, thetrajectory 60 of the bullet drops due to the pull of gravity as well as other factors generally described herein. As shown inFIG. 5A , with the fixedreticle 52 being aligned on thetarget 48 in the manner described above in relation toFIG. 5 , if the user were to take this shot without adjustment or realignment of thefirearm 2 so as to compensate for bullet drop, thetarget 48 would have a higher chance of survival than a shot to center mass, thus leaving the user susceptible to the threat. In other words, if the bullet were shot while thefirearm 2 was aligned using only the fixedreticle 52, the actual point of impact of the bullet would not match the desired point ofimpact 63 of the bullet. The actual point of impact shown inFIGS. 5 and 5A and identified by thevariable reticle 54 is significantly lower than the desired point ofimpact 63 as identified by the fixedreticle 52. As stated above thetrajectory 60 of a bullet can be impacted by a number of factors such as ballistic information, environmental information and geographic information for example. For this reason, theprocessor 22 communicates with the associated sensors and/or instruments and receives signals therefrom and subsequently considers these signals when determining the distance to thetarget 48. To effectively utilize these factors when determining the range distance, theprocessor 22 is connected to a memory unit 24 which for example can store characteristic tables. It should be appreciated that the term “memory unit” herein is intended to include various types of suitable data storage media, whether permanent or temporary, such as transitory electronic memories, non-transitory computer-readable medium and/or computer-writable medium, With the variety of data and information that can be detected by the associated sensors and instrumentation, theprocessor 22 can access and utilize the characteristic tables so as to increase the accuracy of setting the position of thevariable reticle 54 based on the detected range distance. As an example, one characteristic table can relate to the effect that the shape of the bullet has on the bullet trajectory or another characteristic table can relate to the effect that bullet weight has on the bullet trajectory. Thus with the ballistics information input by the user, theprocessor 22 accesses these ballistic characteristic tables to determine the measures by which bullet shape and/or weight alters the trajectory of the bullet over the detected range distance. Theprocessor 22 then factors in the information gathered from the characteristic tables and the determined range distance when controlling the location at which thevariable reticle 54 is projected and set on thedisplay screen 20 of theoptical scope 16. - Once the position of the
variable reticle 54 is set in the view field in relation to the fixedreticle 52, as inFIG. 5A , the user then realigns the aim of thefirearm 2 so as to compensate for the amount of bullet drop over the determined range distance. The user realigns thefirearm 2 until the actual point ofimpact 54 matches the desired point ofimpact 63 as shown inFIGS. 6 and 6A . In the illustrated example, the user lifts the end of thebarrel 6 so as to raise theaxis 36 of thebarrel 6 and line ofsight 34 through theoptical scope 16. As thevariable reticle 54 is now set in position with respect to the fixedreticle 52, both the fixed andvariable reticles target 48 when the user raises the view field. InFIGS. 6 and 6A , thefirearm 2 and the view field have been lifted such that the actual point of impact, as demarcated by theadjustable reticle 54, is aligned with the desired point ofimpact 63 on thetarget 48. In short, the user realigns his/her sight picture to utilize thevariable reticle 54 when taking aim and engaging thetarget 48 in STEP 5. - While many varieties and/or embodiments of the present invention have been described in detail, it is apparent that various modifications and alterations of those embodiments will occur to and be readily apparent to those skilled in the art. However, it is to be expressly understood that such modifications and alterations are within the scope and spirit of the present invention, as set forth in the appended claims. Further, the self-adjusting range finding optic system described herein is capable of other embodiments and of being practiced or of being carried out in various other related ways. In addition, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of “including,” “comprising,” or “having,” and variations thereof herein, is meant to encompass the items listed thereafter and equivalents thereof as well as additional items while only the terms “consisting of” and “consisting only of” are to be construed in a limitative sense.
Claims (12)
1. A method of finding aim for a firearm comprising steps of:
acquiring a range to a target;
calculating an estimated bullet drop of a bullet based on the acquired range to the target;
adjusting a reticle to compensate for the estimated bullet drop; and
displaying the adjusted reticle on an optic which indicates an estimated actual point of impact of the bullet on the target to facilitate an accurate shot with the firearm.
2. The method for finding aim for a firearm according to claim 1 further comprising actuating a range finder to acquire the range to the target.
3. The method for finding aim for a firearm according to claim 2 , further comprising aligning the target with a fixed reticle in an optical scope, and actuating the range finder with a pressure switch to acquire the range to the target.
4. The method for finding aim for a firearm according to claim 2 , further comprising:
transmitting the acquired range to the target to a processor;
determining, with the processor, the estimated bullet drop based on the acquired range to the target;
controlling, with the processor, a position of the adjusted reticle displayed on the optic such that the adjusted reticle estimates the actual point of impact of the bullet on the target based upon at least the range to the target and the calculated the estimated bullet drop.
5. The method for finding aim for a firearm according to claim 1 , further comprising steps of:
acquiring at least one of a ballistic variable, an environmental variable and a geographical variable with at least one of a user input device, an environmental condition detection instrument and a geographical condition detection instrument;
transmitting the acquired range to the target and the at least one of the ballistic variable, the environmental variable and the geographical variable to a processor;
calculating, with the processor, the estimated bullet drop based on the acquired range to the target and the at least one of the ballistic variable, the environmental variable and the geographical variable; and
controlling, with the processor, a position of the adjusted reticle displayed on the optic such that the adjusted reticle estimates the actual point of impact of the bullet on the target based upon at least two or more of the range to the target, the calculated the estimated bullet drop, the at least one ballistic variable, the environmental variable and the geographical variable.
6. The method for finding aim for a firearm according to claim 1 further comprising steps of:
initially aligning a fixed reticle in an optical scope of the firearm with a desired point of impact of a bullet on the target;
adjusting an adjustable reticle to compensate for the estimated bullet drop based on the acquired range to the target;
displaying the adjusted reticle on the optic at a fixed position; and
realigning the firearm such that the adjusted reticle is aligned with the desired point of impact of the bullet on the target.
7. A self-adjusting optic system for mounting on a firearm, the optic system comprising:
a range finder for acquiring a range to a target;
a processor which calculates an estimated bullet drop of a bullet based on the acquired range to the target;
a reticle which is adjustable to compensate for the estimated bullet drop based on the acquired range to the target;
an optic having a display device on which the adjustable reticle is displayed to facilitate to facilitate an accurate shot with the firearm.
8. The optic system according to claim 7 , wherein the optic is an optical scope that comprises a fixed reticle, and a pressure switch which communicates with the range finder, such that when biased, the pressure switch activates the range finder to acquire the range to the target.
9. The optic system according to claim 7 , wherein the range finder transmits the acquired range to the target to a processor, the estimated bullet drop that depends on the acquired range to the target is determined by the processor, an adjustable reticle is displayed on the display device of the optic, and a position of the adjustable reticle on the display device of the optic is controlled by the processor and is equal to an actual point of impact of a-bullet on the target.
10. The optic system according to claim 9 , wherein the optic is an optical scope having a fixed reticle that fixed in position therein, when the firearm is aimed in a first position at the target, the fixed reticle is aligned with a desired point of impact of a bullet on the target, the processor controls the position at which the adjustable reticle is displayed, via the display device, in the optical scope such that, when the firearm is aimed in the first position, the adjustable reticle is aligned with an actual point of impact of the bullet on the target, and a difference of the positions of the fixed reticle and the adjustable reticle in the optical scope depends on the estimated bullet drop.
11. The optic system according to claim 9 , wherein
at least one of a user input device, an environmental condition detection device and a geographical condition detection device communicates with the processor, the user input device transmits ballistic variables to the processor, the environmental condition detection device transmits environmental condition variables to the processor, and the geographical condition detection device transmits geographical condition variables to the processor;
the position of the adjustable reticle on the display device of the optical scope is controlled by the processor as a function the acquired range to the target and at least one of
at least one of the ballistic variables,
at least one of the environmental condition variables, and
at least one of the geographical condition variables.
12. A method for finding aim for a firearm comprising:
initially aiming the firearm to align a fixed reticle of an optical scope of the firearm with a desired point of impact of a bullet on the target;
actuating a range finder with a pressure switch, arranged adjacent a trigger guard of the firearm, to acquire a range to the target;
transmitting the acquired range to the target to a processor;
calculating, with the processor, a bullet drop based on the acquired range to the target;
determining, with the processor, a position on a display device at which an adjusted reticle is to be displayed in the optical scope based on the calculated bullet drop;
displaying the adjusted reticle on the display device in the optical scope in the determined position, the adjusted reticle defining an actual point of impact of the bullet on the target; and
realigning the firearm such that the adjusted reticle is aligned with the desired point of impact of the bullet on the target.
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US14/849,656 US20160069640A1 (en) | 2014-09-10 | 2015-09-10 | Apparatus and method for self-adjusting, range finding aim point for rifle mounting optics |
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US201462048589P | 2014-09-10 | 2014-09-10 | |
US14/849,656 US20160069640A1 (en) | 2014-09-10 | 2015-09-10 | Apparatus and method for self-adjusting, range finding aim point for rifle mounting optics |
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US20160069640A1 true US20160069640A1 (en) | 2016-03-10 |
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US14/849,656 Abandoned US20160069640A1 (en) | 2014-09-10 | 2015-09-10 | Apparatus and method for self-adjusting, range finding aim point for rifle mounting optics |
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US20160313090A1 (en) * | 2013-03-22 | 2016-10-27 | Orchard Arms Llc | Integral telescopic sight for firearms |
US10408571B2 (en) * | 2015-02-05 | 2019-09-10 | Raytheon Canada Limited | Switch assembly for optical sight activation |
US11162763B2 (en) | 2015-11-03 | 2021-11-02 | N2 Imaging Systems, LLC | Non-contact optical connections for firearm accessories |
US10459678B2 (en) | 2017-01-06 | 2019-10-29 | George Joseph Samo | System for tracking and graphically displaying logistical, ballistic, and real time data of projectile weaponry and pertinent assets |
US10962314B2 (en) | 2017-04-12 | 2021-03-30 | Laser Aiming Systems Corporation | Firearm including electronic components to enhance user experience |
US11561057B2 (en) | 2017-04-12 | 2023-01-24 | Laser Aiming Systems Corporation | Firearm including electronic components to enhance user experience |
US10162147B2 (en) | 2017-05-09 | 2018-12-25 | Bae Systems Information And Electronic Systems Integration Inc. | Red dot windage and elevation adjustment |
US11022403B2 (en) | 2017-06-06 | 2021-06-01 | Garmin Switzerland Gmbh | Targeting system |
WO2018226306A1 (en) * | 2017-06-06 | 2018-12-13 | Garmin Switzerland Gmbh | Targeting system |
US11859947B2 (en) | 2017-06-06 | 2024-01-02 | Garmin Switzerland Gmbh | Targeting system |
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US11725908B2 (en) | 2017-10-11 | 2023-08-15 | Sig Sauer, Inc. | Digital reticle system |
US11287218B2 (en) | 2017-10-11 | 2022-03-29 | Sig Sauer, Inc. | Digital reticle aiming method |
CN108731542A (en) * | 2018-08-14 | 2018-11-02 | 成都昊图新创科技有限公司 | Auxiliary sighting device, gun sight with debugging functions and auxiliary aim at modification method |
US11122698B2 (en) | 2018-11-06 | 2021-09-14 | N2 Imaging Systems, LLC | Low stress electronic board retainers and assemblies |
US10801813B2 (en) * | 2018-11-07 | 2020-10-13 | N2 Imaging Systems, LLC | Adjustable-power data rail on a digital weapon sight |
US11143838B2 (en) | 2019-01-08 | 2021-10-12 | N2 Imaging Systems, LLC | Optical element retainers |
US20230030683A1 (en) * | 2019-10-31 | 2023-02-02 | Vega Grieshaber Kg | Measuring device for process automation in the industrial environment |
US11454473B2 (en) * | 2020-01-17 | 2022-09-27 | Sig Sauer, Inc. | Telescopic sight having ballistic group storage |
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US11898820B2 (en) | 2020-11-06 | 2024-02-13 | Garmin Switzerland Gmbh | Targeting system |
US20220412696A1 (en) * | 2021-06-24 | 2022-12-29 | Wilcox Industries Corp. | Pressure pad accessory controller for weapon |
US20240019229A1 (en) * | 2022-07-18 | 2024-01-18 | Michael Robert Christensen | Attachable Anemometer for Firearm |
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