GB735848A - Improvements in or relating to image-projecting optical systems - Google Patents

Improvements in or relating to image-projecting optical systems

Info

Publication number
GB735848A
GB735848A GB3448053A GB3448053A GB735848A GB 735848 A GB735848 A GB 735848A GB 3448053 A GB3448053 A GB 3448053A GB 3448053 A GB3448053 A GB 3448053A GB 735848 A GB735848 A GB 735848A
Authority
GB
United Kingdom
Prior art keywords
image
plate
mirror
aspherical
centre
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
GB3448053A
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 GB3448053A priority Critical patent/GB735848A/en
Publication of GB735848A publication Critical patent/GB735848A/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)
  • Lenses (AREA)

Abstract

735,848. Optical systems. ABBEY, A. (American Optical Co.). Dec. 10, 1953, No. 34480/53. Class 97 (1). An optical projection system comprises a concave spherical mirror forming an image of an object and a correcting plate in the projecting beam in the form of a meniscus convex to the mirror and having one surface aspherical and the other curved spherically about a centre located approximately at the intersection of the image plane with the optical axis of the system, the plate correcting the spherical aberration of the system and also correcting field errors. Fig. 5 illustrates the system applied to a television receiver comprising a cathode ray tube 16 the image on the screen 11 of which is projected by a spherical mirror 10 on to a plane P through the corrector plate 13 having its surface 15 aspherical and its surface 14 curved spherically about the point 12 as centre. Alternatively the surface 15 may be spherical and the surface 14 aspherical. The plate 13 may be located at the centre of curvature of the mirror 10. Numerical data are given for two examples.
GB3448053A 1953-12-10 1953-12-10 Improvements in or relating to image-projecting optical systems Expired GB735848A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3448053A GB735848A (en) 1953-12-10 1953-12-10 Improvements in or relating to image-projecting optical systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3448053A GB735848A (en) 1953-12-10 1953-12-10 Improvements in or relating to image-projecting optical systems

Publications (1)

Publication Number Publication Date
GB735848A true GB735848A (en) 1955-08-31

Family

ID=10366170

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3448053A Expired GB735848A (en) 1953-12-10 1953-12-10 Improvements in or relating to image-projecting optical systems

Country Status (1)

Country Link
GB (1) GB735848A (en)

Similar Documents

Publication Publication Date Title
GB559214A (en) Improvements in television image projection systems and cathode ray tubes for use therein
GB557771A (en) Improvements in or relating to apparatus for projecting optical images
GB923175A (en) Improvements in picture projection systems
US2409971A (en) Catadioptric television projector
US2489835A (en) Optical projection system having apertured concave image forming mirror
GB735848A (en) Improvements in or relating to image-projecting optical systems
US2963937A (en) Optical beam splitter
US2669709A (en) Image projection optical system
US2821109A (en) Spherical reflecting optical system having a non-planar correcting plate
US2673977A (en) Schmidt television projector
GB618253A (en) Improvements in or relating to optical objectives
US2274116A (en) Optical system
GB560496A (en) Improvements in or relating to apparatus for projecting optical images
GB1131293A (en) Optical sighting apparatus
US2647255A (en) Television receiver
GB964177A (en) Improvements relating to optical projection systems
GB528685A (en) Improvements in or relating to cathode ray tube television receivers and to optical projection systems therefor
US2482566A (en) Image-projection optical system with cylindrical screen and stop means
GB602872A (en) Improvements in or relating to electron-optical devices
GB657047A (en) Improvements in or relating to cathode-ray tube display systems
GB559065A (en) Improvements in or relating to optical image projection systems
GB626384A (en) Improvements in or relating to optical objective systems
GB627673A (en) Improvements in or relating to optical projection systems
RU2075769C1 (en) Lens with big relative aperture
GB732427A (en) Improvements relating to centred optical systems