JPS5590906A - Projector - Google Patents
ProjectorInfo
- Publication number
- JPS5590906A JPS5590906A JP16589378A JP16589378A JPS5590906A JP S5590906 A JPS5590906 A JP S5590906A JP 16589378 A JP16589378 A JP 16589378A JP 16589378 A JP16589378 A JP 16589378A JP S5590906 A JPS5590906 A JP S5590906A
- Authority
- JP
- Japan
- Prior art keywords
- bar
- projection
- telecentric
- mask
- arrayed
- 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 readily form the high-performance projection optical system by disposing a mask to the end face of the grooved block arrayed and fixed with bar-form lenses, in the projection system of the copying machine.
CONSTITUTION: The 1st bar-form lens 101 being telecentric on the exit side and 2nd bar-form lens 102 being telecentric on the incident side, which have a uniform diameter and whose respective optical axis direction lengths are longer than the effective diameter, are arrayed into the periodical groove rows of a block 114 which is composed of metals or plastics such as phenolic resins or polycarbonate resins and has V-grooves or round grooves, in such a manner that they become perpendicular and coaxial to the object surface and projection surface, after which they are fixed by a sheet-form member 115 or the like, thereafter a mask 121 composed of a thin metal plate, plastic sheet or the like allowing the incidence of only the effective luminous flux is mounted to the incident mirror surface. Thereby, the projection optical system which has no leaking light from the gaps between the 1st, 2nd bar- form lenses 101, 102 and grooved block 114 is formed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16589378A JPS5590906A (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 |
---|---|---|---|
JP16589378A JPS5590906A (en) | 1978-12-28 | 1978-12-28 | Projector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5590906A true JPS5590906A (en) | 1980-07-10 |
Family
ID=15820971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16589378A Pending JPS5590906A (en) | 1978-12-28 | 1978-12-28 | Projector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5590906A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62160401A (en) * | 1986-01-08 | 1987-07-16 | Toshiba Corp | Optical parts and production thereof |
-
1978
- 1978-12-28 JP JP16589378A patent/JPS5590906A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62160401A (en) * | 1986-01-08 | 1987-07-16 | Toshiba Corp | Optical parts and production thereof |
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