GB1073178A – Optical system for colour television scanners
– Google Patents
GB1073178A – Optical system for colour television scanners
– Google Patents
Optical system for colour television scanners
Info
Publication number
GB1073178A
GB1073178A
GB39726/64A
GB3972664A
GB1073178A
GB 1073178 A
GB1073178 A
GB 1073178A
GB 39726/64 A
GB39726/64 A
GB 39726/64A
GB 3972664 A
GB3972664 A
GB 3972664A
GB 1073178 A
GB1073178 A
GB 1073178A
Authority
GB
United Kingdom
Prior art keywords
stop
colour
stops
apertures
luminance
Prior art date
1963-10-02
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
Application number
GB39726/64A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips GmbH
Original Assignee
Fernseh GmbH
Priority date (The priority date 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 date listed.)
1963-10-02
Filing date
1964-09-30
Publication date
1967-06-21
1964-09-30
Application filed by Fernseh GmbH
filed
Critical
Fernseh GmbH
1967-06-21
Publication of GB1073178A
publication
Critical
patent/GB1073178A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
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
Abstract
1,073,178. Colour television flying-spot scanners. FERNSEH G.m.b.H. Sept. 30, 1964 [Oct. 2, 1963; July 11, 1964], No. 39726/64. Heading H4F. In a colour television flying-spot scanner in which an objective lens 52 images a raster traced upon the fluorescent screen of a scanning cathode-ray tube 51 in the plane of a colour transparency 54, and in which a plurality of optical paths form images of the stop 53 of the objective lens 52 in the planes of adjustable stops 64, 74, 84, 94 associated with photoelectric converter devices 65, 75, 85, 95, the apertures of the adjustable stops are so chosen as to produce a maximum visual signal-to-noise ratio in the resultant colour television image. The light transmitted by the colour transparency is divided by a partially-transparent neutral grey reflector 61 and dichroic mirrors 71 and 81 and passed by way of mirrors 62, 72 and 82 to photo-cells 65, 75, 85 and 95 which yield the luminance signal and red, blue and green colour signals respectively. Lens 52 is arranged to have as large an aperture as possible and its stop 53 is imaged in planes in front of the photo-cells by condenser lenses 63, 73, 83 and 93. In the optical path which primarily determines the resolution of the television image, i.e. the luminance channel or the green channel when a separate luminance channel is not used, the maximum aperture of its adjustable stop is so chosen that the common objective 52 attains its optimum resolution. The stop apertures in the other optical paths are chosen larger, preferably corresponding in one path at least to the maximum numerical aperture of objective 52. The stops may comprise linear iris diaphragms which are coupled together so that the established ratio of the apertures remains constant when the stops are adjusted. When the scanner is operating in accordance with the N.T.S.C. system, the operating ratios are 4: 3: 2 for green-to-red-to-blue. A common stop may be additionally provided in the optical path for the colour signals which may be adjusted independently and simultaneously with the luminance stop.
GB39726/64A
1963-10-02
1964-09-30
Optical system for colour television scanners
Expired
GB1073178A
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
DEF40892A
DE1227506B
(en)
1963-10-02
1963-10-02
Color point light scanner
DEF43412A
DE1264492B
(en)
1963-10-02
1964-07-11
Optical arrangement for color television sets for color saturation control
Publications (1)
Publication Number
Publication Date
GB1073178A
true
GB1073178A
(en)
1967-06-21
Family
ID=25975961
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB39726/64A
Expired
GB1073178A
(en)
1963-10-02
1964-09-30
Optical system for colour television scanners
Country Status (3)
Country
Link
DE
(2)
DE1227506B
(en)
GB
(1)
GB1073178A
(en)
NL
(1)
NL6411428A
(en)
Family Cites Families (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB714154A
(en)
*
1950-12-23
1954-08-25
Emi Ltd
Improvements relating to colour television apparatus
NL196114A
(en)
*
1954-04-03
1963
1963-10-02
DE
DEF40892A
patent/DE1227506B/en
active
Pending
1964
1964-07-11
DE
DEF43412A
patent/DE1264492B/en
active
Pending
1964-09-30
GB
GB39726/64A
patent/GB1073178A/en
not_active
Expired
1964-10-01
NL
NL6411428A
patent/NL6411428A/xx
unknown
Also Published As
Publication number
Publication date
NL6411428A
(en)
1965-04-05
DE1227506B
(en)
1966-10-27
DE1264492B
(en)
1968-03-28
Similar Documents
Publication
Publication Date
Title
US3586760A
(en)
1971-06-22
Color television camera generating uniform lag color component signals
GB514776A
(en)
1939-11-17
Improvements in or relating to natural colour television systems
GB650106A
(en)
1951-02-14
Simultaneous colour television
US3590145A
(en)
1971-06-29
Method and arrangement for eliminating persistency effects at low light levels in plumbicon tubes
GB1110885A
(en)
1968-04-24
Improvements in or relating to colour television transmission apparatus
GB678159A
(en)
1952-08-27
Improvements in or relating to systems for the transmission of stationary or animated coloured images
GB974140A
(en)
1964-11-04
Colour television camera system
JPH0628461B2
(en)
1994-04-13
Projection display device
US2389645A
(en)
1945-11-27
Television system
GB814710A
(en)
1959-06-10
Improvements relating to colour television receivers
GB1406619A
(en)
1975-09-17
Method and apparatus for scanning a colour picture
GB1073178A
(en)
1967-06-21
Optical system for colour television scanners
GB1002771A
(en)
1965-08-25
Alignment of television camera
GB1238467A
(en)
1971-07-07
GB1057253A
(en)
1967-02-01
Improvements relating to television camera arrangements
JPH0628460B2
(en)
1994-04-13
Projection display device
GB1414169A
(en)
1975-11-19
Photoelectric transducer
GB1193714A
(en)
1970-06-03
Colour Video Signal Generating Apparatus
GB514021A
(en)
1939-10-27
Apparatus for separating the picture components according to colour from the brightness components in coloured television pictures (scenes and the like)
US2307661A
(en)
1943-01-05
Electro-optical method and apparatus
GB1197481A
(en)
1970-07-08
Colour Video Signal Generating System
GB1041590A
(en)
1966-09-07
Improvements in or relating to colour television cameras
US2787655A
(en)
1957-04-02
Color television camera control
GB816258A
(en)
1959-07-08
Improvements in or relating to colour television systems
SU788445A1
(en)
1980-12-15
Colour stereotelevision receiver
None