GB1051065A - - Google Patents
Info
- Publication number
- GB1051065A GB1051065A GB1051065DA GB1051065A GB 1051065 A GB1051065 A GB 1051065A GB 1051065D A GB1051065D A GB 1051065DA GB 1051065 A GB1051065 A GB 1051065A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- tubes
- luminance
- colour
- focus
- 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.)
- Active
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
- G02B27/108—Beam splitting or combining systems for sampling a portion of a beam or combining a small beam in a larger one, e.g. wherein the area ratio or power ratio of the divided beams significantly differs from unity, without spectral selectivity
-
- 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
- G02B27/12—Beam splitting or combining systems operating by refraction only
- G02B27/126—The splitting element being a prism or prismatic array, including systems based on total internal reflection
-
- 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
- G02B27/143—Beam splitting or combining systems operating by reflection only using macroscopically faceted or segmented reflective surfaces
-
- 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
-
- 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
- G02B27/147—Beam splitting or combining systems operating by reflection only using averaging effects by spatially variable reflectivity on a microscopic level, e.g. polka dots, chequered or discontinuous patterns, or rapidly moving surfaces
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
- H04N23/13—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths with multiple sensors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
- H04N23/13—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths with multiple sensors
- H04N23/16—Optical arrangements associated therewith, e.g. for beam-splitting or for colour correction
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Color Television Image Signal Generators (AREA)
Abstract
1,051,065. Optical apparatus. ELECTRIC & MUSICAL INDUSTRIES Ltd. July 15, 1963 [July 14, 1962; Aug.11, 1962; Sept.21, 1962; Nov.9, 1962; May 16, 1963], Nos. 27150/62, 30877/62, 35944/62, 42516/62 and 19423/63. Heading G2J. [Also in Division H4] A colour television camera, Figs. 2 and 3, comprises a luminance pick-up tube 4 one or more colour pick-up tubes 5 and an optical system 3 for applying image light to the tubes the system being such that an optical image of greater depth of focus is formed on the target of the luminance tube than on the target of the/or each colour tube. Thus in Fig. 2 a small mirror deflects incoming light from only a small axial zone to tube 4, allowing light from the marginal zones to pass to tube 5, whilst in Fig. 3 a similar result is obtained by allowing light to pass to tube 4 via a small aperture in a mirror. In a typical arrangement the small mirror or aperture may be of such a size as to define an effective aperture of f 8 for tube 4, so as to provide a suitable depth of focus, whereas the camera objective 2 may have an aperture of # 4 whereby the image formed on tube 5 is of smaller depth of focus. The invention permits the camera to make greater use of the available light since the objective does not have to be limited to an aperture which provides an appropriate depth of focus for the luminance tube. The reduced depth of focus for the colour tube or tubes is tolerable since they are only required to generate low definition signals. The Specification discloses more detailed arrangement based on Figs. 2 and 3 with reference to Figs.4, 6, 7, 8, 9 and 15 (not shown) and see Fig. 13 in which provision is made for the use of zoom tubes, lens turrets, relay lenses, folded optical systems, camera tubes of different types and sizes and numerous other optical features. Fig. 13 illustrates a typical arrangement where the camera incorporates a zoom lens 35 which forms a real image at the position shown dotted which is then transferred to three vidicon colour tubes 32-34 by way of transfer lens 36, dichroic mirrors, 41, 42, reflecting mirrors 39-41 and objective lenses 43-45. A small mirror 37 (corresponding to mirror 3 in Fig. 2) diverts the axial light to the luminance tube 31 (an image orthicon) by way of reflecting mirror 38. Fig. 13 also incorporates electrical means for varying the effective depth of focus of the luminance signal channel without actual aperture adjustment of the camera. The luminance signal from tube 31 appears across potentiometer 75 whilst a second low definition (small depth of focus) signal is produced across a potentiometer 78 by matrixing the outputs of tubes 32-34 in circuit 74. The two potentiometers are gauged for inverse operation and the luminance signal output terminal 77 is coupled to the potentiometer sliders via resistors 76 and 79. A modification, Fig. 14 (not shown), involves only a simple potentiometer connected between the two luminance signal sources 31,and 74. The low definition luminance signal may be derived from a second luminance tube. A camera according to another aspect of the invention is illustrated in Fig. 5 where light from a lens 23 is directed to a luminance tube 10 and two colour tubes 11 and 12 by way of dichroic mirrors 13, 15 and reflecting mirrors 14, 16. The tubes have individual objective lenses 17-19 with iris diaphragms 20-22 which may be adjusted so that diaphragm 20 has the smallest aperture and thus provides an image for luminance tube 10 of greater depth of focus than those provided for colour tubes 11 and 12. Reference is made to the use of a five-tube camera in which four tubes operate in accordance with the invention to provide signals at one scanning standard, e. g. 405 lines and the fifth tube function to provide a monochrome signal at a second scanning standards, e.g. 625. Where a single colour tube is used this may operate in conjunction with a colour selection filter formed of a plurality of differently coloured vertical strips. Fig. 10 illustrates a detailed optical system for use in the invention and arranged so that mirror 53 (which corresponds to mirror 3 in Fig.2) is located in the path of parallel rays. Lens 51, which may be a zoom lens or other complex lens, tends to focus image light at point A but a concave lens 52 located at a distance from A equal to its focal length diverges the light into parallel rays. The axial rays deflected by mirror 53 are focussed on the luminance tube at C by objection 55 whilst the remaining marginal rays are focussed in the colour seetion of the camera at B by objection 54. Figs. 11 and 12 illustrate optical systems equivalent to those shown in Figs. 3 and 2 respectively which are formed of pairs of prisms 62, 63 separated by an air space except where they are jointed by a transparent substance 64 e.g. Canada Balsam. The lower face of prism 63 is blackened at 66 to prevent the reflection of unwanted light.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB43922/63A GB1072487A (en) | 1963-11-07 | 1963-11-07 | Improvements relating to colour television camera arrangements |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1051065A true GB1051065A (en) |
Family
ID=10430935
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1051065D Active GB1051065A (en) | 1963-11-07 | ||
GB43922/63A Expired GB1072487A (en) | 1962-07-16 | 1963-11-07 | Improvements relating to colour television camera arrangements |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB43922/63A Expired GB1072487A (en) | 1962-07-16 | 1963-11-07 | Improvements relating to colour television camera arrangements |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1202823B (en) |
GB (2) | GB1072487A (en) |
NL (1) | NL295348A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2001534A1 (en) * | 1968-02-08 | 1969-09-26 | Philips Nv | TELEVISION CAMERA |
US5023723A (en) * | 1988-04-18 | 1991-06-11 | Canon Kabushiki Kaisha | Image sensing apparatus having plural image sensors and plural shutters |
EP1635155A2 (en) * | 2004-09-14 | 2006-03-15 | CENTRO SVILUPPO MATERIALI S.p.A. | Optical device for the on-line measuring of electromagnetic radiation |
EP2843460A1 (en) * | 2008-10-31 | 2015-03-04 | Hewlett-Packard Development Company, L.P. | Optical beam couplers and splitters |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1473096A (en) * | 1966-01-06 | 1967-03-17 | Improvements to devices for photographically recording superimposed images | |
DE202007019236U1 (en) | 2007-11-02 | 2011-11-09 | Valentina Anzupowa | Color splitter imager group with partially opaque mirrors and mosaic color filters |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL160224B (en) * | 1950-06-30 | Ferodo Sa | COMPOSITION OF A CABLE DRUM AND A GUIDE DEVICE. | |
GB714154A (en) * | 1950-12-23 | 1954-08-25 | Emi Ltd | Improvements relating to colour television apparatus |
-
0
- NL NL295348D patent/NL295348A/xx unknown
- GB GB1051065D patent/GB1051065A/en active Active
-
1963
- 1963-07-13 DE DEE25159A patent/DE1202823B/en active Pending
- 1963-11-07 GB GB43922/63A patent/GB1072487A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2001534A1 (en) * | 1968-02-08 | 1969-09-26 | Philips Nv | TELEVISION CAMERA |
US5023723A (en) * | 1988-04-18 | 1991-06-11 | Canon Kabushiki Kaisha | Image sensing apparatus having plural image sensors and plural shutters |
US5355166A (en) * | 1988-04-18 | 1994-10-11 | Canon Kabushiki Kaisha | Image sensing apparatus |
EP1635155A2 (en) * | 2004-09-14 | 2006-03-15 | CENTRO SVILUPPO MATERIALI S.p.A. | Optical device for the on-line measuring of electromagnetic radiation |
EP1635155A3 (en) * | 2004-09-14 | 2007-11-28 | CENTRO SVILUPPO MATERIALI S.p.A. | Optical device for the on-line measuring of electromagnetic radiation |
EP2843460A1 (en) * | 2008-10-31 | 2015-03-04 | Hewlett-Packard Development Company, L.P. | Optical beam couplers and splitters |
Also Published As
Publication number | Publication date |
---|---|
NL295348A (en) | |
DE1202823B (en) | 1965-10-14 |
GB1072487A (en) | 1967-06-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3670097A (en) | Stereoscopic television system and apparatus | |
US2672072A (en) | Color television optical system | |
US3610818A (en) | Color television camera with a device for additional illumination of signal converting plates of camera tubes | |
GB1213336A (en) | Optical arrangement for colour television cameras | |
US3590145A (en) | Method and arrangement for eliminating persistency effects at low light levels in plumbicon tubes | |
US3173012A (en) | Telescope system for simultaneously viewing two superposed images of the same objectat different magnifications | |
GB1125880A (en) | A panoramic objective for photography or projection | |
US3284566A (en) | Colour television camera arrangements | |
GB1051065A (en) | ||
US3547521A (en) | Compact zoom lens and beam spliting system | |
US3303278A (en) | Television pick-up camera for three color pick-up of television images | |
US3681521A (en) | Color television camera with dichroic mirrors | |
GB1377426A (en) | Method of and apparatus for photographint a subject by line scanning | |
US3914787A (en) | Color television camera with a color-resolving optical system | |
US3227035A (en) | Optical sighting apparatus with coaxial objective lens system and grid imaging lens | |
US2959099A (en) | Optical reproducing system | |
US3739080A (en) | Color television cameras | |
US3290986A (en) | Target simulating and auto-collimating optical instrument | |
US3288921A (en) | Television camera including means for yarying the depth of focus | |
US2982173A (en) | Means for producing color separation images | |
GB1240468A (en) | Improvements relating to television cameras | |
US4150883A (en) | Cineconversion machine | |
US3546371A (en) | Colour camera,in which a colour-separating prism system is arranged between the objective and the camera tubes | |
GB983463A (en) | Colour television camera | |
US3720782A (en) | Lensless flying-spot scanner for generating color signals |