JPS5589802A - Projector - Google Patents
ProjectorInfo
- Publication number
- JPS5589802A JPS5589802A JP16588578A JP16588578A JPS5589802A JP S5589802 A JPS5589802 A JP S5589802A JP 16588578 A JP16588578 A JP 16588578A JP 16588578 A JP16588578 A JP 16588578A JP S5589802 A JPS5589802 A JP S5589802A
- Authority
- JP
- Japan
- Prior art keywords
- lenses
- compound eye
- lens system
- projection lens
- telecentric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To achieve the reduction in the conjugate distance of the projection lens system by determining the directions in the optical axis direction of the plural bar- form lenses which are respectively telecentric on the exit and incident sides by intermediate rings thereby forming the compound eye projection system lens.
CONSTITUTION: The compound eye projection lens system is constituted by the bar-form lenses 101..., 102... which are inserted into each of multiple pipes 103, are respectively provided with light absorbing layers 106 on the outer side and are telecentric to the exit and incident sides. Hence, the lenses 101, 102 are coaxial and have no eccentricity. External stray light is cut off by the light absorbing layers 106. The positions of the lenses 101, 102 in their optical axis direction are adjusted by the intermediate rings 107 of the lenses 101, 102 and the intermediate images by the lens 101, 102 are formed in the specified same position. If the 1st, 2nd radii of curvature, effective diameters, effective lengths, refractive indices, lateral magnifications, etc. of the lenses 101..., 102... are selected, the good projected image is formed by the compound eye projection lens system of a short conjugate distance and the miniaturization of the projection optical system may be accomplished.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16588578A JPS5589802A (en) | 1978-12-28 | 1978-12-28 | Projector |
DE2951452A DE2951452A1 (en) | 1978-12-28 | 1979-12-20 | PROJECTION DEVICE |
US06/105,789 US4275962A (en) | 1978-12-28 | 1979-12-20 | Projection device |
GB7944021A GB2042759B (en) | 1978-12-28 | 1979-12-21 | Projection device |
FR7931862A FR2445544B1 (en) | 1978-12-28 | 1979-12-27 | MULTIPLE OBJECTIVE PROJECTION DEVICE FOR COPY MACHINES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16588578A JPS5589802A (en) | 1978-12-28 | 1978-12-28 | Projector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5589802A true JPS5589802A (en) | 1980-07-07 |
Family
ID=15820819
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16588578A Pending JPS5589802A (en) | 1978-12-28 | 1978-12-28 | Projector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5589802A (en) |
-
1978
- 1978-12-28 JP JP16588578A patent/JPS5589802A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8616711B2 (en) | Oblique projector having movable free form lenses | |
EP0332201A3 (en) | Optical projection system | |
JP2001075023A5 (en) | ||
JPS52117126A (en) | Telephoto lens system | |
JPS5432319A (en) | Fish eye lens | |
JPS57122413A (en) | Zoom lens | |
JPS5397824A (en) | Camera lens of behind iris | |
JP3431968B2 (en) | Optical system of amphibious camera | |
JPS57173810A (en) | Optical system of endoscope objective lens | |
JPS52130631A (en) | Photographic lens of large aperture and super wide angle | |
JPS5589802A (en) | Projector | |
JPS5648607A (en) | Wide-angle zoom lens | |
JPS5655915A (en) | Zoom lens | |
JP2001021803A5 (en) | Zoom lens and camcorder | |
JPS5470826A (en) | Wide-angle objective lens | |
JPS5567717A (en) | Focusing method which prevents change in angle of view | |
JPS557712A (en) | Compact standard zoom lens | |
JPS5589804A (en) | Projector | |
JPS5589803A (en) | Projector | |
JPS5782811A (en) | Zoom lens | |
JPS55166632A (en) | Finder for single-lens reflex camera | |
JPS6058449B2 (en) | zoom lens for camera | |
JP4006046B2 (en) | Imaging optics | |
JPS565518A (en) | Optical correction type variable focal length lens system | |
JPS54123948A (en) | Projector |