GB503222A - Improvements in light-dividing prism systems for colour photography or the like - Google Patents
Improvements in light-dividing prism systems for colour photography or the likeInfo
- Publication number
- GB503222A GB503222A GB2403937A GB2403937A GB503222A GB 503222 A GB503222 A GB 503222A GB 2403937 A GB2403937 A GB 2403937A GB 2403937 A GB2403937 A GB 2403937A GB 503222 A GB503222 A GB 503222A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rays
- light
- colour photography
- angles
- reflecting
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
- G02B27/1013—Beam splitting or combining systems for splitting or combining different wavelengths for colour or multispectral image sensors, e.g. splitting an image into monochromatic image components on respective sensors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/145—Beam splitting or combining systems operating by reflection only having sequential partially reflecting surfaces
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Color Television Image Signal Generators (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
503,222. Colour photography. TATE, F. R. (Colortone Corporation) Sept. 2, 1937, No. 24039. [Class 97 (i)] In a light-dividing system for colour photography, comprising a compound prism block 11 having two internal semi-reflecting surfaces 17, 18, and laterally-disposed reflecting-prisms 15, 13 receiving the rays reflected by the surfaces 17, 18 respectively, so that the system produces three parallel beams of emergent rays the surfaces 17, 18, and the reflecting surfaces 13a, 15a of the prisms 13, 15, are inclined to the axis of the system at such angles, less than 44‹ 58<1>, that all rays in each convergent cone of light from any point in a field of view whose image is obtained, are incident upon the surfaces 13a, 15a at angles greater than the critical angles of total reflection for the glass used. The inclinations of these surfaces depend on the maximum angle of the said cone of rays and may be as little as 36‹ for rays whose angle of incidence on the surface 10 is as much as 15‹. The lateral rays pass through glass blocks 14, 16 to ensure that all three images are co-planar. Filters 22, 23, 24 are provided on the exit surfaces of the system. To prevent the passage of unwanted rays, the system may be provided with screens 25, 26, 27, 29, 30, 31.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2403937A GB503222A (en) | 1937-09-02 | 1937-09-02 | Improvements in light-dividing prism systems for colour photography or the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2403937A GB503222A (en) | 1937-09-02 | 1937-09-02 | Improvements in light-dividing prism systems for colour photography or the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB503222A true GB503222A (en) | 1939-04-03 |
Family
ID=10205402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2403937A Expired GB503222A (en) | 1937-09-02 | 1937-09-02 | Improvements in light-dividing prism systems for colour photography or the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB503222A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2502392A (en) * | 1945-05-22 | 1950-03-28 | Hooker Electrochemical Co | Fluids for hydraulic and dielectric uses |
-
1937
- 1937-09-02 GB GB2403937A patent/GB503222A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2502392A (en) * | 1945-05-22 | 1950-03-28 | Hooker Electrochemical Co | Fluids for hydraulic and dielectric uses |
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