GB862594A - Improved optical projection apparatus - Google Patents

Improved optical projection apparatus

Info

Publication number
GB862594A
GB862594A GB2428/58A GB242858A GB862594A GB 862594 A GB862594 A GB 862594A GB 2428/58 A GB2428/58 A GB 2428/58A GB 242858 A GB242858 A GB 242858A GB 862594 A GB862594 A GB 862594A
Authority
GB
United Kingdom
Prior art keywords
plate
lenses
systems
transparencies
superposition
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
GB2428/58A
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
Publication of GB862594A publication Critical patent/GB862594A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/40—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character is selected from a number of characters arranged one beside the other, e.g. on a common carrier plate
    • G09F9/405—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character is selected from a number of characters arranged one beside the other, e.g. on a common carrier plate the selected character being projected on a common screen accommodating only one character at a time, to provide the same display position for all characters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

862,594. Optical-projection apparatus. GUMPERTZ, D. G. Jan. 24, 1958 [Jan. 31, 1957], No. 2428/58. Class 97(1) A projection unit comprises a plurality of converging optical systems projecting into superposition on a screen 18 and includes an approximately spherically curved transparent plate 58 or 66 carrying lenses 60, 68 aligned with the axes of the projection systems. The lenses may be formed integrally with or attached to the curved plates. In the form shown each system includes one of a group of lamps 42 arranged in horizontal and vertical rows and separated by the partitions of a spacer member 56. The lamps at the periphery of the group are located forwardly by spacers 46. The systems project into superposition on the screen 18 from transparencies at the plate 58 aligned with the lenses thereon. The transparencies may be formed on a film attached to the plate or painted directly on the plate. A selected transparency is projected by lighting the appropriate lamp. Several units may be juxtaposed so that, for example, the separate digits of a number may be displayed.
GB2428/58A 1957-01-31 1958-01-24 Improved optical projection apparatus Expired GB862594A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US862594XA 1957-01-31 1957-01-31

Publications (1)

Publication Number Publication Date
GB862594A true GB862594A (en) 1961-03-15

Family

ID=22197335

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2428/58A Expired GB862594A (en) 1957-01-31 1958-01-24 Improved optical projection apparatus

Country Status (1)

Country Link
GB (1) GB862594A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1185513B (en) * 1961-11-13 1965-01-14 Polycontact A G Device for displaying a selectable combination of characters
DE1214432B (en) * 1963-03-11 1966-04-14 Teldix Luftfahrt Ausruestung G Lens plate for projection devices of small dimensions and process for their manufacture
DE1221931B (en) * 1962-12-31 1966-07-28 Ibm Optical display device for letters, numbers or characters
JPS4933637A (en) * 1972-07-22 1974-03-28

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1185513B (en) * 1961-11-13 1965-01-14 Polycontact A G Device for displaying a selectable combination of characters
DE1221931B (en) * 1962-12-31 1966-07-28 Ibm Optical display device for letters, numbers or characters
DE1214432B (en) * 1963-03-11 1966-04-14 Teldix Luftfahrt Ausruestung G Lens plate for projection devices of small dimensions and process for their manufacture
JPS4933637A (en) * 1972-07-22 1974-03-28

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