JPS5583021A - Projector - Google Patents
ProjectorInfo
- Publication number
- JPS5583021A JPS5583021A JP15728678A JP15728678A JPS5583021A JP S5583021 A JPS5583021 A JP S5583021A JP 15728678 A JP15728678 A JP 15728678A JP 15728678 A JP15728678 A JP 15728678A JP S5583021 A JPS5583021 A JP S5583021A
- Authority
- JP
- Japan
- Prior art keywords
- lenses
- portions
- lens
- opposing
- block
- 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
- 230000003287 optical effect Effects 0.000 abstract 1
Landscapes
- Optical Systems Of Projection Type Copiers (AREA)
Abstract
PURPOSE: To achieve the improvement in the brightness of projected images by making the spacing between the two lens blocks constituting the projection optical system constant at the holding portions and employing telecentric lenses for a plurality of opposing lens faces.
CONSTITUTION: The light images from the object face D are formed on the projection face P through lens blocks 81, 82. Here, a plurality of through-holes are opened in each block and lenses are packed in these portions. The curved faces of the opposing lenses are converged at the openings of the through-holes and the portions of the lens blocks opposing at the portions other than the lens curved faces are held at a fixed spacing by land portions 83, 84. The exit side of the lenses of the block 81 and the incident side of the lenses of the block 82 are made into telecentric lenses.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15728678A JPS5583021A (en) | 1978-12-18 | 1978-12-18 | Projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15728678A JPS5583021A (en) | 1978-12-18 | 1978-12-18 | Projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5583021A true JPS5583021A (en) | 1980-06-23 |
Family
ID=15646333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15728678A Pending JPS5583021A (en) | 1978-12-18 | 1978-12-18 | Projector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5583021A (en) |
-
1978
- 1978-12-18 JP JP15728678A patent/JPS5583021A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS52117126A (en) | Telephoto lens system | |
| JPS5423555A (en) | Zoom lens | |
| JPS52145051A (en) | Zoom lens system permitting extra-close-up photographing | |
| JPS52113753A (en) | Zoom lens capable of simply changing variable focal length range | |
| JPS57161825A (en) | Compound eye projecting device | |
| JPS52150645A (en) | Objective lens for opthalmology | |
| JPS5243422A (en) | Finder for camera of large size picture | |
| JPS54622A (en) | Copying lens | |
| JPS5336250A (en) | Fresnel lens | |
| JPS5583021A (en) | Projector | |
| JPS561912A (en) | Copying variable power lens system | |
| JPS5321926A (en) | Lens for projection and photography | |
| JPS53122426A (en) | Projector | |
| JPS5282333A (en) | Long focal distance lens of modified elnoster type | |
| JPS52127327A (en) | Foucsing lens system | |
| JPS56114919A (en) | Bright and compact zoom lens of optical correction type | |
| JPS52146620A (en) | Gauss type lens | |
| JPS5417029A (en) | Copying apparatus | |
| JPS5583017A (en) | Projector | |
| JPS5583020A (en) | Projector | |
| JPS52127328A (en) | Focusing lens system | |
| JPS5583016A (en) | Projector | |
| JPS53102029A (en) | Shift lens | |
| JPS5380227A (en) | Photographic attachment lens | |
| JPS52119242A (en) | Scanning optical system having half-tone picture forming optical syste m |