JPS54104729A - Television camera - Google Patents

Television camera

Info

Publication number
JPS54104729A
JPS54104729A JP1129378A JP1129378A JPS54104729A JP S54104729 A JPS54104729 A JP S54104729A JP 1129378 A JP1129378 A JP 1129378A JP 1129378 A JP1129378 A JP 1129378A JP S54104729 A JPS54104729 A JP S54104729A
Authority
JP
Japan
Prior art keywords
prisms
prism
diechroic
pick
air gap
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.)
Granted
Application number
JP1129378A
Other languages
Japanese (ja)
Other versions
JPS6221314B2 (en
Inventor
Shigeru Oshima
Takeshi Sekiguchi
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.)
Canon Inc
Original Assignee
Canon Inc
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.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP1129378A priority Critical patent/JPS54104729A/en
Priority to US06/001,928 priority patent/US4236177A/en
Publication of JPS54104729A publication Critical patent/JPS54104729A/en
Publication of JPS6221314B2 publication Critical patent/JPS6221314B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Color Television Image Signal Generators (AREA)

Abstract

PURPOSE: To eliminate unsightly screen due to shading of bias illumination, by making the top angle of each prism in the TV camera having the color separation prism system into the value within specific range, and by providing air gap between prisms.
CONSTITUTION: Mono-color picture is formed and picked up on the pick up screen of a plurality of pick up tubes 5 with the objective lens 4 and the color separation prisms 11 to 14. The prisms 11 to 14 are sequentailly located along the light axis of the lens 5, air gap is placed among the prisms 11 to 13, and the diechroic layer 12" is formed between the prisms 12 and 13 and the diechroic layer 13" is formed between the prisms 13 and 14. Further, the top angles θ1 to θ4 of each prism are taken as the value within the following ranges. 5°≤θ1≤20°, 30°≤θ2≤35.8°, 31.5°≤θ3≤40°, 15°≤θ4≤18.2°.
COPYRIGHT: (C)1979,JPO&Japio
JP1129378A 1978-01-17 1978-02-03 Television camera Granted JPS54104729A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1129378A JPS54104729A (en) 1978-02-03 1978-02-03 Television camera
US06/001,928 US4236177A (en) 1978-01-17 1979-01-08 Beam splitting prism assembly with bias light source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1129378A JPS54104729A (en) 1978-02-03 1978-02-03 Television camera

Publications (2)

Publication Number Publication Date
JPS54104729A true JPS54104729A (en) 1979-08-17
JPS6221314B2 JPS6221314B2 (en) 1987-05-12

Family

ID=11773939

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1129378A Granted JPS54104729A (en) 1978-01-17 1978-02-03 Television camera

Country Status (1)

Country Link
JP (1) JPS54104729A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4422722A (en) * 1980-02-22 1983-12-27 Fuji Photo Optical Co., Ltd. Color separation optical system for color television camera

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50114241A (en) * 1973-12-11 1975-09-08
JPS52129426U (en) * 1976-03-30 1977-10-01

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50114241A (en) * 1973-12-11 1975-09-08
JPS52129426U (en) * 1976-03-30 1977-10-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4422722A (en) * 1980-02-22 1983-12-27 Fuji Photo Optical Co., Ltd. Color separation optical system for color television camera

Also Published As

Publication number Publication date
JPS6221314B2 (en) 1987-05-12

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