GB805226A - Improvements in or relating to optical projectors - Google Patents

Improvements in or relating to optical projectors

Info

Publication number
GB805226A
GB805226A GB34767/55A GB3476755A GB805226A GB 805226 A GB805226 A GB 805226A GB 34767/55 A GB34767/55 A GB 34767/55A GB 3476755 A GB3476755 A GB 3476755A GB 805226 A GB805226 A GB 805226A
Authority
GB
United Kingdom
Prior art keywords
dec
optical
light source
gate
area
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
GB34767/55A
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.)
LYTAX WERKE GES MIT BESCHRAENK
Original Assignee
LYTAX WERKE GES MIT BESCHRAENK
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 LYTAX WERKE GES MIT BESCHRAENK filed Critical LYTAX WERKE GES MIT BESCHRAENK
Publication of GB805226A publication Critical patent/GB805226A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/208—Homogenising, shaping of the illumination light

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lenses (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Projection Apparatus (AREA)

Abstract

805,226. Illuminating systems for optical projection. LYTAX WERKE G.m.b.H. Dec. 5, 1955 [Dec. 21, 1954], No. 34767/55. Drawings to Specification. Class 97(1) In optical projection apparatus a relatively long narrow light source is. arranged with its longitudinal axis along the optical axis and the area of cross-section of an image of the source formed by a concave mirror at the plane of a projection gate is less than the area of the gate. Preferably, the light source is a single coiled filament having a rectilinear axis. An ordinary or Fresnel lens may be used in conjunction with the mirror. Specification 464,564 is referred to.
GB34767/55A 1954-12-21 1955-12-05 Improvements in or relating to optical projectors Expired GB805226A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE805226X 1954-12-21

Publications (1)

Publication Number Publication Date
GB805226A true GB805226A (en) 1958-12-03

Family

ID=6722300

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34767/55A Expired GB805226A (en) 1954-12-21 1955-12-05 Improvements in or relating to optical projectors

Country Status (1)

Country Link
GB (1) GB805226A (en)

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