GB473782A - Optical system for color photography - Google Patents
Optical system for color photographyInfo
- Publication number
- GB473782A GB473782A GB17716/36A GB1771636A GB473782A GB 473782 A GB473782 A GB 473782A GB 17716/36 A GB17716/36 A GB 17716/36A GB 1771636 A GB1771636 A GB 1771636A GB 473782 A GB473782 A GB 473782A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prism
- area
- plate
- focused
- semi
- 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
- G02B27/144—Beam splitting or combining systems operating by reflection only using partially transparent surfaces without spectral selectivity
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
473,782. Optical systems. HARRISON, W. H., and HARRISON, E. C. June 25, 1936, No. 17716. Convention date, June 25, 1935. [Class 97 (i)] A light-dividing system including a semi-transparent reflecting surface for forming two juxtaposed images for colour photography is so arranged that direct light is prevented from reaching the area upon which the reflected beam is focused. As shown, the semi-transparent mirror surface 12a on a plate 12 divides the incident beam R into a beam R' focused by a lens L<2> on an area 9 of the film 21, and. a beam R<1> focused on an area 8 of the film by a lens L<1> after reflection by a prism 11. The lower face 11a of the prism is highly polished so that rays, such as x, which fall directly on this surface are reflected thereby to fall either on a blackened surface 15 of the plate 12, or on the gate 20 whereby they are prevented from reaching the area 8 of the film. The prism 11 is rotatable about an axis 14 to vary the distance between the areas 8, 9 and is held by screws 16 on a plate 17, the face 11a of the prism being preferably inclined at an angle of 5‹ to the principal ray R. In an alternative construction the semi-transparent surface 12a may be included between two glass prisms and the prism 11 may be replaced by a rotatable plate mirror, the upper surface of the glass prism serving the same purpose as the surface 11a.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US473782XA | 1935-06-25 | 1935-06-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB473782A true GB473782A (en) | 1937-10-20 |
Family
ID=21948616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17716/36A Expired GB473782A (en) | 1935-06-25 | 1936-06-25 | Optical system for color photography |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB473782A (en) |
-
1936
- 1936-06-25 GB GB17716/36A patent/GB473782A/en not_active Expired
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