JPS54136825A - Lighting device in imaging optical system - Google Patents
Lighting device in imaging optical systemInfo
- Publication number
- JPS54136825A JPS54136825A JP4442678A JP4442678A JPS54136825A JP S54136825 A JPS54136825 A JP S54136825A JP 4442678 A JP4442678 A JP 4442678A JP 4442678 A JP4442678 A JP 4442678A JP S54136825 A JPS54136825 A JP S54136825A
- Authority
- JP
- Japan
- Prior art keywords
- lighting
- transmission body
- section
- face
- original
- 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
Landscapes
- Microscoopes, Condenser (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Abstract
PURPOSE: To make possible slit lighting of good lighting efficiency free from uneven lighting by using a special condensing type optical transmission body.
CONSTITUTION: A special condensing type transmission body 5 is so disposed between the original face 2 and photosensitive face 3 that its image focal point Q slightly above the original plane 2. A light source 6 is disposed in its object focal point P and the light from the light source 6 is condensed slghtly above of the original face 2, by which constant slit lighting on the original face 2 is accomplished. The transmission body 5 is a transparent body such as of glass whose section assumes a regular square and when the refractive index of the center 0 of its section is let to be n0 and its constant to be a, the refractive index at the point x from the center 0 in the direction x parallel to one arbitrary side is expressed by n0(1-ax2/2), thus the refractive indices in the direction z perpendicular to this section are uniform.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4442678A JPS54136825A (en) | 1978-04-15 | 1978-04-15 | Lighting device in imaging optical system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4442678A JPS54136825A (en) | 1978-04-15 | 1978-04-15 | Lighting device in imaging optical system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54136825A true JPS54136825A (en) | 1979-10-24 |
Family
ID=12691156
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4442678A Pending JPS54136825A (en) | 1978-04-15 | 1978-04-15 | Lighting device in imaging optical system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54136825A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4859034A (en) * | 1981-12-28 | 1989-08-22 | Seiko Epson Corporation | Liquid crystal optical printing apparatus |
-
1978
- 1978-04-15 JP JP4442678A patent/JPS54136825A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4859034A (en) * | 1981-12-28 | 1989-08-22 | Seiko Epson Corporation | Liquid crystal optical printing apparatus |
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