GB642429A - Improvements in or relating to optical systems for television receivers - Google Patents

Improvements in or relating to optical systems for television receivers

Info

Publication number
GB642429A
GB642429A GB28358/47A GB2835847A GB642429A GB 642429 A GB642429 A GB 642429A GB 28358/47 A GB28358/47 A GB 28358/47A GB 2835847 A GB2835847 A GB 2835847A GB 642429 A GB642429 A GB 642429A
Authority
GB
United Kingdom
Prior art keywords
relating
optical systems
television receivers
receivers
television
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
GB28358/47A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Philips Electronics NV
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 Philips Gloeilampenfabrieken NV, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB642429A publication Critical patent/GB642429A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0884—Catadioptric systems having a pupil corrector
    • G02B17/0888—Catadioptric systems having a pupil corrector the corrector having at least one aspheric surface, e.g. Schmidt plates
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
GB28358/47A 1946-10-23 1947-10-23 Improvements in or relating to optical systems for television receivers Expired GB642429A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US642429XA 1946-10-23 1946-10-23

Publications (1)

Publication Number Publication Date
GB642429A true GB642429A (en) 1950-09-06

Family

ID=22054553

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28358/47A Expired GB642429A (en) 1946-10-23 1947-10-23 Improvements in or relating to optical systems for television receivers

Country Status (1)

Country Link
GB (1) GB642429A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165960A (en) * 1984-10-22 1986-04-23 Gen Electric Light collection systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165960A (en) * 1984-10-22 1986-04-23 Gen Electric Light collection systems

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