DE974514C - Lighting device for projection image devices - Google Patents

Lighting device for projection image devices

Info

Publication number
DE974514C
DE974514C DEZ1345D DEZ0001345D DE974514C DE 974514 C DE974514 C DE 974514C DE Z1345 D DEZ1345 D DE Z1345D DE Z0001345 D DEZ0001345 D DE Z0001345D DE 974514 C DE974514 C DE 974514C
Authority
DE
Germany
Prior art keywords
grid
light source
projection image
lighting device
lens
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
DEZ1345D
Other languages
German (de)
Inventor
Kurt Dr-Ing Raentsch
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
Priority to DEZ1345D priority Critical patent/DE974514C/en
Application granted granted Critical
Publication of DE974514C publication Critical patent/DE974514C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • G03B21/208Homogenising, shaping of the illumination light

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)

Description

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

© 009 692/22 1.61© 009 692/22 1.61

Claims (1)

PATENTANSPRUCH:PATENT CLAIM: Beleuchtungseinrichtung für Projektionsbildgeräte, die aus einer Lichtquelle, einem optischen Element zur Abbildung dieser Lichtquelle in Richtung des auszuleuchtenden Projektionsbildfeldes sowie aus einer optischen Einrichtung besteht, die aus zwei Linsenrasterplatten gebildet wird und in den normalen Projektionsstrahlengang derart eingefügt ist, daß durch je eine Elementarlinse des der Lichtquelle benachbarten Rasters die Lichtquelle in je eine Elementarlinse des dem Bildfenster benachbarten Rasters und durch die eine Elementarlinse dieses zweiten Rasters je eine Elementarlinse des ersten Rasters auf dem Bildfenster abgebildet wird, dadurch gekennzeichnet, daß die Rasterelemente auf konzentrischen Kugeloberflächen angeordnet sind, deren gemeinsamer Krümmungsmittelpunkt praktisch in dem Mittelpunkt des auszuleuchtenden Bildfensters oder innerhalb des Objektivs liegt.Lighting device for projection image devices, which consists of a light source, an optical element for imaging this light source in the direction of the projection image field to be illuminated and an optical device which is formed from two lenticular plates and is inserted into the normal projection beam path in such a way that one elementary lens each of the Light source adjacent grid, the light source in each one elementary lens of the grid adjacent to the picture window and through which an elementary lens of this second grid is imaged on the picture window by an elementary lens of the first grid, characterized in that the grid elements are arranged on concentric spherical surfaces whose common center of curvature is practically lies in the center of the image window to be illuminated or within the lens. In Betracht gezogene Druckschriften:
Deutsche Patentschrift Nr. 561 573; USA.-Patentschrift Nr. 1 762 932.
Considered publications:
German Patent No. 561 573; U.S. Patent No. 1,762,932.
DEZ1345D 1937-12-01 1937-12-01 Lighting device for projection image devices Expired DE974514C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEZ1345D DE974514C (en) 1937-12-01 1937-12-01 Lighting device for projection image devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEZ1345D DE974514C (en) 1937-12-01 1937-12-01 Lighting device for projection image devices

Publications (1)

Publication Number Publication Date
DE974514C true DE974514C (en) 1961-01-26

Family

ID=7618079

Family Applications (1)

Application Number Title Priority Date Filing Date
DEZ1345D Expired DE974514C (en) 1937-12-01 1937-12-01 Lighting device for projection image devices

Country Status (1)

Country Link
DE (1) DE974514C (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1762932A (en) * 1927-05-11 1930-06-10 Eastman Kodak Co Projection system for color pictures
DE561573C (en) * 1928-04-05 1932-10-15 Aeg Lighting device for projector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1762932A (en) * 1927-05-11 1930-06-10 Eastman Kodak Co Projection system for color pictures
DE561573C (en) * 1928-04-05 1932-10-15 Aeg Lighting device for projector

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