GB510412A - Improvements in or relating to illumination means for optical projection - Google Patents

Improvements in or relating to illumination means for optical projection

Info

Publication number
GB510412A
GB510412A GB32255/38A GB3225538A GB510412A GB 510412 A GB510412 A GB 510412A GB 32255/38 A GB32255/38 A GB 32255/38A GB 3225538 A GB3225538 A GB 3225538A GB 510412 A GB510412 A GB 510412A
Authority
GB
United Kingdom
Prior art keywords
carried
condenser lens
grid
mirror
separate plate
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
GB32255/38A
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Publication of GB510412A publication Critical patent/GB510412A/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)
  • Projection Apparatus (AREA)

Abstract

510,412. Optical-projection apparatus. ZEISS IKON AKT.-GES. Nov. 7, 1938, No. 32255. Convention date, Nov. 6, 1937. Addition to 508,219. [Class 97 (i)] In an illuminating system for optical projection as described in the parent Specification one or both of the lenticular grids or screens are carried by or formed on another element or other elements of the system. In systems comprising a mirror 2 behind the light source 1, one grid may be carried by the mirror, and the second grid may be carried by the condenser lens 3, as shown, or on a separate plate between the condenser lens 3 and the picture aperture 4, or, if no condenser lens is provided, on a separate plate. In systems comprising no mirror one grid may be carried by a condenser lens, and the second grid may be carried by another condenser lens or by a separate plate.
GB32255/38A 1937-11-06 1938-11-07 Improvements in or relating to illumination means for optical projection Expired GB510412A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE510412X 1937-11-06

Publications (1)

Publication Number Publication Date
GB510412A true GB510412A (en) 1939-08-01

Family

ID=6547436

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32255/38A Expired GB510412A (en) 1937-11-06 1938-11-07 Improvements in or relating to illumination means for optical projection

Country Status (1)

Country Link
GB (1) GB510412A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1005287B (en) * 1954-09-01 1957-03-28 Optische Werke Steinheil Gmbh Lighting arrangement for spectral devices
GB2125983A (en) * 1982-07-02 1984-03-14 Canon Kk Illuminating apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1005287B (en) * 1954-09-01 1957-03-28 Optische Werke Steinheil Gmbh Lighting arrangement for spectral devices
GB2125983A (en) * 1982-07-02 1984-03-14 Canon Kk Illuminating apparatus

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