GB1389681A - Image projector - Google Patents

Image projector

Info

Publication number
GB1389681A
GB1389681A GB543572A GB543572A GB1389681A GB 1389681 A GB1389681 A GB 1389681A GB 543572 A GB543572 A GB 543572A GB 543572 A GB543572 A GB 543572A GB 1389681 A GB1389681 A GB 1389681A
Authority
GB
United Kingdom
Prior art keywords
screen
projector
reflective member
image projector
ogilvie
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
GB543572A
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.)
Ogilvie D P
Original Assignee
Ogilvie D P
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 Ogilvie D P filed Critical Ogilvie D P
Priority to GB543572A priority Critical patent/GB1389681A/en
Publication of GB1389681A publication Critical patent/GB1389681A/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
    • G03B21/10—Projectors with built-in or built-on screen

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

1389681 Optical projection apparatus D P OGILVIE 4 May 1973 [5 Feb 1972] 5435/72 Heading G2J A rear projection unit consists of a translucent screen 13 forming part of a light-tight housing, a projector 18 and a reflective member 19, either or both of the projector and the reflective member being mounted so as to allow variation in the size of the image appearing on the screen 13. Adjustment is from a console 12. Screen 13 may be a satin neutral screen sandwiched between glass plates.
GB543572A 1972-02-05 1972-02-05 Image projector Expired GB1389681A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB543572A GB1389681A (en) 1972-02-05 1972-02-05 Image projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB543572A GB1389681A (en) 1972-02-05 1972-02-05 Image projector

Publications (1)

Publication Number Publication Date
GB1389681A true GB1389681A (en) 1975-04-03

Family

ID=9796154

Family Applications (1)

Application Number Title Priority Date Filing Date
GB543572A Expired GB1389681A (en) 1972-02-05 1972-02-05 Image projector

Country Status (1)

Country Link
GB (1) GB1389681A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2880431A1 (en) * 2005-01-06 2006-07-07 Thomson Licensing Sa Overhead projector for projecting image, has fixation units with tabs integrated respectively with adjustable plane reflecting mirror and case, and allowing translational displacement of mirror which reflects beam towards projection screen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2880431A1 (en) * 2005-01-06 2006-07-07 Thomson Licensing Sa Overhead projector for projecting image, has fixation units with tabs integrated respectively with adjustable plane reflecting mirror and case, and allowing translational displacement of mirror which reflects beam towards projection screen

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee