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GB868118A - Improvements in or relating to optical systems for television projection - Google Patents

Improvements in or relating to optical systems for television projection

Info

Publication number
GB868118A
GB868118A GB2654756A GB2654756A GB868118A GB 868118 A GB868118 A GB 868118A GB 2654756 A GB2654756 A GB 2654756A GB 2654756 A GB2654756 A GB 2654756A GB 868118 A GB868118 A GB 868118A
Authority
GB
United Kingdom
Prior art keywords
ray tube
cathode ray
screen
area
relating
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
Application number
GB2654756A
Inventor
Denis Victor Ridgeway
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.)
Pye Electronic Products Ltd
Original Assignee
Pye Ltd
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 Pye Ltd filed Critical Pye Ltd
Priority to GB2654756A priority Critical patent/GB868118A/en
Publication of GB868118A publication Critical patent/GB868118A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7425—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being a dielectric deformable layer controlled by an electron beam, e.g. eidophor projector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

868,118. Optical projection systems. PYE Ltd. Aug. 30,1957 (Aug. 30, 1956], No. 26547/56. Class 97(1) In order to improve the contrast in the image projected from the rectangular picture area of a cathode ray tube 1 having a part spherical screen 3, the usual concave spherical mirror has a non-reflective rectangular area 8 provided, for example, by a paint layer or an aperture. The screen 3 of the cathode ray tube may have a non-reflecting margin defining a rectangular picture area having dimensions not greater than half the corresponding dimensions of the area 8. 6 is the usual Schmidt corrector plate. The cathode ray tube screen 3 and the mirror 1 are preferably concentric. Specification 627,673 is referred to.
GB2654756A 1956-08-30 1956-08-30 Improvements in or relating to optical systems for television projection Expired GB868118A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2654756A GB868118A (en) 1956-08-30 1956-08-30 Improvements in or relating to optical systems for television projection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2654756A GB868118A (en) 1956-08-30 1956-08-30 Improvements in or relating to optical systems for television projection

Publications (1)

Publication Number Publication Date
GB868118A true GB868118A (en) 1961-05-17

Family

ID=10245355

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2654756A Expired GB868118A (en) 1956-08-30 1956-08-30 Improvements in or relating to optical systems for television projection

Country Status (1)

Country Link
GB (1) GB868118A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3536832A (en) * 1966-05-02 1970-10-27 Erich Zipse Accessory apparatus for conversion of a screen picture into a three-dimensional virtual image

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3536832A (en) * 1966-05-02 1970-10-27 Erich Zipse Accessory apparatus for conversion of a screen picture into a three-dimensional virtual image

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