GB615285A - Improvements in or relating to cathode ray tubes - Google Patents

Improvements in or relating to cathode ray tubes

Info

Publication number
GB615285A
GB615285A GB23124/46A GB2312446A GB615285A GB 615285 A GB615285 A GB 615285A GB 23124/46 A GB23124/46 A GB 23124/46A GB 2312446 A GB2312446 A GB 2312446A GB 615285 A GB615285 A GB 615285A
Authority
GB
United Kingdom
Prior art keywords
shell
envelope
mirror
chamber
chambers
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
GB23124/46A
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.)
ARTHUR RICHARD KURT SAMSON
Cinema Television Ltd
Original Assignee
ARTHUR RICHARD KURT SAMSON
Cinema Television 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 ARTHUR RICHARD KURT SAMSON, Cinema Television Ltd filed Critical ARTHUR RICHARD KURT SAMSON
Priority to GB23124/46A priority Critical patent/GB615285A/en
Priority to US732410A priority patent/US2466329A/en
Publication of GB615285A publication Critical patent/GB615285A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/89—Optical or photographic arrangements structurally combined or co-operating with the vessel
    • H01J29/894—Arrangements combined with the vessel for the purpose of image projection on a screen

Landscapes

  • Lenses (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

615,285. Reflecting objectives. CINEMATELEVISION, Ltd., SAMSON, A. R. K., McCONNELL, E. D., and McMULLAN, D. Aug. 2, 1946, No. 23124. [Class 97 (i)] [Also in Group XL (a)] An optical image formed on the fluorescent screen of a cathode-ray tube is projected by a concave mirror inside the envelope through a wall of the envelope and the envelope is divided into two chambers, the chamber containing the electron gun having a higher degree of vacuum than the other chamber. The concave mirror 7, Fig. 1, is in the chamber 9 containing the electron gun, and projects the image through the shell 5 which is spherical to correct for spherical aberration as described in Specification 613,608. The mirror 7 and shell 5 have different radii of curvature, but are concentric. The shell 5 may, however, be flat, and an aspheric correcting plate included inside the envelope. The aspheric plate may then constitute the glass partition 8 separating the two envelope chambers 9, 10, or may be positioned between the partition 8 and the shell 5. The mirror 7 is of glass and the shell 5 of a synthetic resin or plastic. In another embodiment, the mirror 21, Fig. 2, is in the chamber at the higher gas pressure, and the mirror 21 and shell 5 are both of synthetic resin.
GB23124/46A 1946-08-02 1946-08-02 Improvements in or relating to cathode ray tubes Expired GB615285A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB23124/46A GB615285A (en) 1946-08-02 1946-08-02 Improvements in or relating to cathode ray tubes
US732410A US2466329A (en) 1946-08-02 1947-03-05 Partitioned projection cathode-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23124/46A GB615285A (en) 1946-08-02 1946-08-02 Improvements in or relating to cathode ray tubes

Publications (1)

Publication Number Publication Date
GB615285A true GB615285A (en) 1949-01-04

Family

ID=10190496

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23124/46A Expired GB615285A (en) 1946-08-02 1946-08-02 Improvements in or relating to cathode ray tubes

Country Status (2)

Country Link
US (1) US2466329A (en)
GB (1) GB615285A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999163A (en) * 1953-04-30 1961-09-05 Westinghouse Electric Corp Communication system
GB897359A (en) * 1957-12-18 1962-05-23 Harries Television Res Ltd Improvements in and relating to electron discharge tubes and optical systems for television, radar and the like
US3446916A (en) * 1964-07-29 1969-05-27 United Aircraft Corp Collimated viewing system
US3642361A (en) * 1967-11-17 1972-02-15 Hellige & Co Gmbh F Illumination of projecting apparatus
JPS5465048A (en) * 1977-11-02 1979-05-25 Minolta Camera Co Ltd Reflection type optical system of television projector
US4365183A (en) * 1978-02-06 1982-12-21 Kloss Henry E Projection televison tube and process for forming same
US4409515A (en) * 1978-02-06 1983-10-11 Kloss Henry E Projection television tube and process for forming same
US5159230A (en) * 1991-03-07 1992-10-27 Hughes Display Products Corp. Of Ky. Projection cathode ray tube with fluid heat exchanger

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR724524A (en) * 1930-12-20 1932-04-28 Cfcmug Improvements to television receivers
BE411933A (en) * 1934-10-29
GB487241A (en) * 1935-12-17 1938-06-16 Loewe Opta Gmbh Cathode ray tubes for intensity-controlled illumination
US2194418A (en) * 1936-09-04 1940-03-19 Hygrade Sylvania Corp Method of making a cathode-ray tube envelope
US2293529A (en) * 1940-06-29 1942-08-18 Rca Corp Image tube
US2295779A (en) * 1940-08-17 1942-09-15 Rca Corp Projection apparatus
GB557771A (en) * 1942-09-01 1943-12-03 Constantin Stephen Szegho Improvements in or relating to apparatus for projecting optical images

Also Published As

Publication number Publication date
US2466329A (en) 1949-04-05

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