GB583703A - An improved holder for transparencies for optical projection or viewing - Google Patents

An improved holder for transparencies for optical projection or viewing

Info

Publication number
GB583703A
GB583703A GB2297844A GB2297844A GB583703A GB 583703 A GB583703 A GB 583703A GB 2297844 A GB2297844 A GB 2297844A GB 2297844 A GB2297844 A GB 2297844A GB 583703 A GB583703 A GB 583703A
Authority
GB
United Kingdom
Prior art keywords
transparencies
viewing
discs
optical projection
improved holder
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
GB2297844A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2297844A priority Critical patent/GB583703A/en
Publication of GB583703A publication Critical patent/GB583703A/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
    • G03B23/00—Devices for changing pictures in viewing apparatus or projectors
    • G03B23/08—Devices for changing pictures in viewing apparatus or projectors in which pictures are attached to a movable carrier
    • G03B23/10—Devices for changing pictures in viewing apparatus or projectors in which pictures are attached to a movable carrier drum or disc carrier
    • G03B23/105—Devices for changing pictures in viewing apparatus or projectors in which pictures are attached to a movable carrier drum or disc carrier disc carriers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Holders For Sensitive Materials And Originals (AREA)

Abstract

583,703. Changing signs. ROSE, G. E. Nov. 20, 1944, No. 22978. [Class 3 (i)] [Also in Group XX] A holder for transparencies for viewing or projection comprises two transparent discs 10, adapted to be secured in register, with means to hold them a small distance apart, such as the intermediate disc 12. The transparencies, such as those on portions of 9.5 m.m. kinematograph film are introduced into the peripheral space between the discs. Radial lines are provided on the central disc to assist positioning them. The discs 10 have a central hole 16 for mounting in the projection or viewing apparatus and may have roughened surfaces, holes or projections for driving purposes.
GB2297844A 1944-11-20 1944-11-20 An improved holder for transparencies for optical projection or viewing Expired GB583703A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2297844A GB583703A (en) 1944-11-20 1944-11-20 An improved holder for transparencies for optical projection or viewing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2297844A GB583703A (en) 1944-11-20 1944-11-20 An improved holder for transparencies for optical projection or viewing

Publications (1)

Publication Number Publication Date
GB583703A true GB583703A (en) 1946-12-24

Family

ID=10188119

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2297844A Expired GB583703A (en) 1944-11-20 1944-11-20 An improved holder for transparencies for optical projection or viewing

Country Status (1)

Country Link
GB (1) GB583703A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002019029A1 (en) * 2000-08-30 2002-03-07 Active Light Gmbh Transparent image projector and image support

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002019029A1 (en) * 2000-08-30 2002-03-07 Active Light Gmbh Transparent image projector and image support

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