CN103246046A - Play education projector lens - Google Patents
Play education projector lens Download PDFInfo
- Publication number
- CN103246046A CN103246046A CN2013101920001A CN201310192000A CN103246046A CN 103246046 A CN103246046 A CN 103246046A CN 2013101920001 A CN2013101920001 A CN 2013101920001A CN 201310192000 A CN201310192000 A CN 201310192000A CN 103246046 A CN103246046 A CN 103246046A
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- lens
- optical glass
- projector
- present
- eyeglass
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Abstract
Aiming to overcome the defect of poor safety performance of a lens (which is made of glass) used by a current single LCD (Liquid Crystal Display) projector, the invention provides a single LCD projector lens formed by combining two plastic lenses and an optical glass lens, particularly a lens for a play education projector, which has the characteristics that the optical glass lens is positioned between the two plastic lenses; the problem of safety performance is solved; manufacturing cost is greatly reduced; and the lens is particularly suitable for children to use. The lens disclosed by the invention has a focal length of 100mm, F/# of 2.7 and a picture projection rate of 2.1.
Description
Technical field
The present invention relates to the abbreviation of Monolithic LC D(Liquid Crystal Display) projector is with projection objective (hereinafter to be referred as camera lens), is applied to the imaging field of transmissive liquid crystal display technology, is specially adapted to the imaging lens of game type education projector.
Background technology
The projection lens that Monolithic LC D projector adopts at present generally adopts the optical glass of three to five unlike materials to be made, and is dangerous because of Glass breadks easily, and for the game type education projector that children use, its security performance is particularly important especially.The present invention adopts two PMMA materials (plastic cement acrylic) eyeglass and a slice optical glass lens group to close and forms, and a slice optical glass lens is between two plastic lens, solved security performance, and also greatly reduction of manufacturing cost, it all is the camera lens of optical glass lens that resolving power can reach.
Summary of the invention
Deficiency (being made by glass) for the security performance that overcomes present Monolithic LC D camera lens that projector uses, the invention provides and a kind ofly close the Monolithic LC D projector lens that forms by two PMMA materials (plastic cement acrylic) eyeglass and a slice optical glass lens group, wherein a slice optical glass lens is between two plastic lens, lens focus f=100mm of the present invention, F/# are 2.7.
Camera lens of the present invention is made up of three eyeglasses, and by L1-L3 shown in Figure 1, L1, L3 are plastic lens, and L2 is optical glass lens, each eyeglass has two spherical radius, has 6 faces, and its spherical radius respectively is from left to right: 32.44,1233,48.66,35,122.65,38.11mm; The L1-L3 bore respectively is: 33.55,26.55,30.78mm; Its center thickness respectively is: 5.83,0.65,5.15mm; Airspace between the eyeglass is followed successively by: 11.37,11.41mm.The effective total length of forming of camera lens is 34.41mm.
Three eyeglasses are separated according to the airspace required distance between them by the eyeglass spacer ring and form integral body, i.e. a present invention.Be the eyeglass spacer ring by G1 shown in Figure 1, G2.
The present invention needs the liquid crystal board with a slice LCD in use, as the object plane of projection lens, is placed in the right of camera lens of the present invention, through camera lens (the present invention) imaging, is imaged on the left side of camera lens of the present invention, and the picture projection is than 2.1.
Description of drawings
Below in conjunction with drawings and Examples camera lens of the present invention is further specified.
Fig. 1 is the structural drawing of camera lens of the present invention.Require three eyeglasses to be separated and form integral body, i.e. a present invention by two eyeglass spacer rings according to the airspace between three eyeglasses.L1-L3 is three eyeglasses, and L1, L3 are plastic lens, and L2 is optical glass lens, and namely a slice optical glass lens is between two plastic lens.G1, G2 are the eyeglass spacer ring.
Embodiment
Camera lens of the present invention is closed by two plastic lens and a slice optical glass lens group and forms, plastic lens is made mould according to spherical radius, center thickness and bore requirement, and is injection molded, glass mirror is according to spherical radius, center thickness and bore requirement, and grinding forms.Three eyeglasses require three eyeglasses to be separated and form integral body, i.e. a present invention by two eyeglass spacer rings according to the airspace between three eyeglasses.
Camera lens of the present invention needs the liquid crystal board with a slice LCD, in use as the object plane of projection lens, be placed in the right of camera lens of the present invention, through camera lens (the present invention) imaging, be imaged on the left side of camera lens of the present invention, picture projection is than 2.1, i.e. projector distance 870mm, 20 inches of picture catercorner lengths.
Claims (2)
1. recreation education projector lens is characterized in that being closed by two plastic lens and a slice optical glass lens group and forms, and optical glass lens is between two plastic lens.
2. a kind of recreation education projector lens according to claim 1 is characterized in that the spherical radius of described three eyeglasses is followed successively by: 32.44,1233,48.66,35,122.65,38.11mm; The eyeglass bore is followed successively by: 33.55,26.55,30.78mm; Center of lens thickness is followed successively by: 5.83,0.65,5.15mm; Airspace between the eyeglass is followed successively by: 11.37,11.41mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101920001A CN103246046A (en) | 2013-05-23 | 2013-05-23 | Play education projector lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101920001A CN103246046A (en) | 2013-05-23 | 2013-05-23 | Play education projector lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103246046A true CN103246046A (en) | 2013-08-14 |
Family
ID=48925673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101920001A Pending CN103246046A (en) | 2013-05-23 | 2013-05-23 | Play education projector lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103246046A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4577935A (en) * | 1980-03-03 | 1986-03-25 | Minolta Camera Kabushika Kaisha | Video projector lens system |
| JPS6197617A (en) * | 1984-10-18 | 1986-05-16 | Matsushita Electric Ind Co Ltd | Projection lens |
| JPH07209609A (en) * | 1993-12-31 | 1995-08-11 | Texas Instr Inc <Ti> | Projector device |
| US7391577B2 (en) * | 2005-09-30 | 2008-06-24 | Fujinon Corporation | Projection lens and projector |
| CN203241606U (en) * | 2013-05-23 | 2013-10-16 | 苏州轰天砲光电技术有限公司 | Game type education projector lens |
-
2013
- 2013-05-23 CN CN2013101920001A patent/CN103246046A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4577935A (en) * | 1980-03-03 | 1986-03-25 | Minolta Camera Kabushika Kaisha | Video projector lens system |
| JPS6197617A (en) * | 1984-10-18 | 1986-05-16 | Matsushita Electric Ind Co Ltd | Projection lens |
| JPH07209609A (en) * | 1993-12-31 | 1995-08-11 | Texas Instr Inc <Ti> | Projector device |
| US7391577B2 (en) * | 2005-09-30 | 2008-06-24 | Fujinon Corporation | Projection lens and projector |
| CN203241606U (en) * | 2013-05-23 | 2013-10-16 | 苏州轰天砲光电技术有限公司 | Game type education projector lens |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130814 |