GB538622A - Improvements in or relating to optical projection systems - Google Patents

Improvements in or relating to optical projection systems

Info

Publication number
GB538622A
GB538622A GB241040A GB241040A GB538622A GB 538622 A GB538622 A GB 538622A GB 241040 A GB241040 A GB 241040A GB 241040 A GB241040 A GB 241040A GB 538622 A GB538622 A GB 538622A
Authority
GB
United Kingdom
Prior art keywords
reflector
image
relating
optical projection
projection systems
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
GB241040A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB241040A priority Critical patent/GB538622A/en
Publication of GB538622A publication Critical patent/GB538622A/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
    • 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
    • G02B17/0804—Catadioptric systems using two curved mirrors
    • G02B17/0808—Catadioptric systems using two curved mirrors on-axis systems with at least one of the mirrors having a central aperture
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
    • G02B23/06—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors having a focussing action, e.g. parabolic mirror

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

538,622. Television. NEWTON, G. C. Feb. 8, 1940, No. 2410. [Class 40 (iii)] [Also in Group XX] An image projection system in a television receiver comprises a reflector 1 through which a cathode ray tube 2, or other image-reconstituting means, or light therefrom, passes to a smaller reflector 5, the light being reflected thereby to the reflector 1, and thence to form the projected image. The reflector 5 may be plane or convex, and an image-correcting plate may be provided. Specification 537,738 is referred to.
GB241040A 1940-02-08 1940-02-08 Improvements in or relating to optical projection systems Expired GB538622A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB241040A GB538622A (en) 1940-02-08 1940-02-08 Improvements in or relating to optical projection systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB241040A GB538622A (en) 1940-02-08 1940-02-08 Improvements in or relating to optical projection systems

Publications (1)

Publication Number Publication Date
GB538622A true GB538622A (en) 1941-08-11

Family

ID=9739058

Family Applications (1)

Application Number Title Priority Date Filing Date
GB241040A Expired GB538622A (en) 1940-02-08 1940-02-08 Improvements in or relating to optical projection systems

Country Status (1)

Country Link
GB (1) GB538622A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520636A (en) * 1949-05-07 1950-08-29 Polaroid Corp Optical objective
US2520634A (en) * 1949-02-04 1950-08-29 Polaroid Corp Optical objective employing reflecting elements
US2610547A (en) * 1951-08-03 1952-09-16 Frank G Back Catadioptric telephoto system
US2664026A (en) * 1949-11-03 1953-12-29 American Optical Corp Reflecting type image forming lens system
US2684015A (en) * 1950-04-27 1954-07-20 Polaroid Corp Reflecting mirror optical objective
US2703506A (en) * 1951-03-30 1955-03-08 Technicolor Motion Picture Light beam linking optical focusing system of the schmidt type
US4588253A (en) * 1984-05-23 1986-05-13 Brunson Instrument Company Infrared collimator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520634A (en) * 1949-02-04 1950-08-29 Polaroid Corp Optical objective employing reflecting elements
US2520636A (en) * 1949-05-07 1950-08-29 Polaroid Corp Optical objective
US2664026A (en) * 1949-11-03 1953-12-29 American Optical Corp Reflecting type image forming lens system
US2684015A (en) * 1950-04-27 1954-07-20 Polaroid Corp Reflecting mirror optical objective
US2703506A (en) * 1951-03-30 1955-03-08 Technicolor Motion Picture Light beam linking optical focusing system of the schmidt type
US2610547A (en) * 1951-08-03 1952-09-16 Frank G Back Catadioptric telephoto system
US4588253A (en) * 1984-05-23 1986-05-13 Brunson Instrument Company Infrared collimator

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