GB557771A - Improvements in or relating to apparatus for projecting optical images - Google Patents

Improvements in or relating to apparatus for projecting optical images

Info

Publication number
GB557771A
GB557771A GB1234142A GB1234142A GB557771A GB 557771 A GB557771 A GB 557771A GB 1234142 A GB1234142 A GB 1234142A GB 1234142 A GB1234142 A GB 1234142A GB 557771 A GB557771 A GB 557771A
Authority
GB
United Kingdom
Prior art keywords
mirror
tube
envelope
form part
fluorescent screen
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
GB1234142A
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 GB1234142A priority Critical patent/GB557771A/en
Publication of GB557771A publication Critical patent/GB557771A/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)
  • Transforming Electric Information Into Light Information (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Lenses (AREA)

Abstract

557,771. Projection systems ; cathode-ray tubes. CINEMA-TELEVISION, Ltd. (Szegho, C. S.). Sept. 1, 1942, No. 12341. [Class 97 (i)] [Also in Group XL] In a combination for projecting images, comprising a cathode-ray tube, a concave mirror, and an aspherical plate or system correcting spherical aberration of the mirror, the mirror is formed on a part of the envelope of the tube or is disposed within the envelope ; the correcting plate &c. may be external to the tube, or may form part of the tube, or may form part of the tube envelope. Fig. 2 shows a tube wherein the mirror 9 and correcting plate 12 form part of the envelope, the mirror being disposed around the aperture of the electron gun 10 having its axis coincident with the central radius of a spherically convex fluorescent screen 8. As shown in Fig. 3, the fluorescent screen 13 is flat, and an annular convex mirror 14 reflects the image to the concave mirror 15 reflecting through a correcting plate 16. The concave mirror may be obtained by coating the envelope or by the provision of a metallic mirror within it, and the axis of the electron gun may make an angle with a normal to the fluorescent screen surface.
GB1234142A 1942-09-01 1942-09-01 Improvements in or relating to apparatus for projecting optical images Expired GB557771A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1234142A GB557771A (en) 1942-09-01 1942-09-01 Improvements in or relating to apparatus for projecting optical images

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1234142A GB557771A (en) 1942-09-01 1942-09-01 Improvements in or relating to apparatus for projecting optical images

Publications (1)

Publication Number Publication Date
GB557771A true GB557771A (en) 1943-12-03

Family

ID=10002717

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1234142A Expired GB557771A (en) 1942-09-01 1942-09-01 Improvements in or relating to apparatus for projecting optical images

Country Status (1)

Country Link
GB (1) GB557771A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435296A (en) * 1945-11-29 1948-02-03 Rauland Corp Cathode-ray tube projector
US2453003A (en) * 1946-03-07 1948-11-02 Pye Ltd Television projection tube
US2459637A (en) * 1944-11-29 1949-01-18 Motorola Inc Cathode-ray image-translating device
US2466329A (en) * 1946-08-02 1949-04-05 Cinema Television Ltd Partitioned projection cathode-ray tube
US2467462A (en) * 1947-10-22 1949-04-19 Philco Corp Electrooptical projection apparatus
US2473320A (en) * 1946-03-07 1949-06-14 Cossor Ltd A C Cathode-ray tube
US2482151A (en) * 1944-08-18 1949-09-20 Philips Lab Inc Cathode-ray projection tube
US2491072A (en) * 1945-06-19 1949-12-13 Perkin Elmer Corp Schmidt television projector with spherical aberration corrector
US2510106A (en) * 1946-05-31 1950-06-06 Farnsworth Res Corp Catoptric television projector having tube screen and object surface connected by light-conducting filaments
US2520190A (en) * 1946-10-24 1950-08-29 Philips Lab Inc Cathode-ray tube
US2571657A (en) * 1945-04-27 1951-10-16 Eastman Kodak Co Catadioptric lens system
DE860727C (en) * 1949-03-31 1952-12-22 Optische Ind De Oude Delft Nv Device for visual and photographic observation of objects

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2482151A (en) * 1944-08-18 1949-09-20 Philips Lab Inc Cathode-ray projection tube
US2459637A (en) * 1944-11-29 1949-01-18 Motorola Inc Cathode-ray image-translating device
US2571657A (en) * 1945-04-27 1951-10-16 Eastman Kodak Co Catadioptric lens system
US2491072A (en) * 1945-06-19 1949-12-13 Perkin Elmer Corp Schmidt television projector with spherical aberration corrector
US2435296A (en) * 1945-11-29 1948-02-03 Rauland Corp Cathode-ray tube projector
US2453003A (en) * 1946-03-07 1948-11-02 Pye Ltd Television projection tube
US2473320A (en) * 1946-03-07 1949-06-14 Cossor Ltd A C Cathode-ray tube
US2510106A (en) * 1946-05-31 1950-06-06 Farnsworth Res Corp Catoptric television projector having tube screen and object surface connected by light-conducting filaments
US2466329A (en) * 1946-08-02 1949-04-05 Cinema Television Ltd Partitioned projection cathode-ray tube
US2520190A (en) * 1946-10-24 1950-08-29 Philips Lab Inc Cathode-ray tube
DE880319C (en) * 1946-10-24 1953-05-07 Philips Nv Cathode ray tubes for television use
US2467462A (en) * 1947-10-22 1949-04-19 Philco Corp Electrooptical projection apparatus
DE860727C (en) * 1949-03-31 1952-12-22 Optische Ind De Oude Delft Nv Device for visual and photographic observation of objects

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