FR506560A - Optical system for projection devices - Google Patents

Optical system for projection devices

Info

Publication number
FR506560A
FR506560A FR506560A FR506560DA FR506560A FR 506560 A FR506560 A FR 506560A FR 506560 A FR506560 A FR 506560A FR 506560D A FR506560D A FR 506560DA FR 506560 A FR506560 A FR 506560A
Authority
FR
France
Prior art keywords
optical system
projection devices
projection
devices
optical
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
FR506560A
Other languages
French (fr)
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.)
Corning Glass Works
Original Assignee
Corning Glass Works
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 Corning Glass Works filed Critical Corning Glass Works
Application granted granted Critical
Publication of FR506560A publication Critical patent/FR506560A/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)
FR506560A 1919-11-25 1919-11-25 Optical system for projection devices Expired FR506560A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR506560T 1919-11-25

Publications (1)

Publication Number Publication Date
FR506560A true FR506560A (en) 1920-08-25

Family

ID=8909208

Family Applications (1)

Application Number Title Priority Date Filing Date
FR506560A Expired FR506560A (en) 1919-11-25 1919-11-25 Optical system for projection devices

Country Status (1)

Country Link
FR (1) FR506560A (en)

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