GB1320925A - Optical projector - Google Patents

Optical projector

Info

Publication number
GB1320925A
GB1320925A GB3430670A GB3430670A GB1320925A GB 1320925 A GB1320925 A GB 1320925A GB 3430670 A GB3430670 A GB 3430670A GB 3430670 A GB3430670 A GB 3430670A GB 1320925 A GB1320925 A GB 1320925A
Authority
GB
United Kingdom
Prior art keywords
slide
images
optical projector
condenser
sectoned
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
GB3430670A
Other languages
English (en)
Inventor
La Parra L De
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.)
Empresa Nacional de Optica SA
Original Assignee
Empresa Nacional de Optica SA
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 Empresa Nacional de Optica SA filed Critical Empresa Nacional de Optica SA
Publication of GB1320925A publication Critical patent/GB1320925A/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
    • G03B21/001—Slide projectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
GB3430670A 1970-01-15 1970-07-15 Optical projector Expired GB1320925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES375479A ES375479A1 (es) 1970-01-15 1970-01-15 Un aparato proyector de diapositiva multiple.

Publications (1)

Publication Number Publication Date
GB1320925A true GB1320925A (en) 1973-06-20

Family

ID=8454765

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3430670A Expired GB1320925A (en) 1970-01-15 1970-07-15 Optical projector

Country Status (8)

Country Link
US (1) US3768899A (enExample)
JP (1) JPS5023812B1 (enExample)
CA (1) CA954350A (enExample)
DE (1) DE2034431C3 (enExample)
ES (1) ES375479A1 (enExample)
FR (1) FR2076114B1 (enExample)
GB (1) GB1320925A (enExample)
NL (1) NL7006922A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249326A1 (en) * 1986-05-09 1987-12-16 Greyhawk Systems, Inc. Apparatus of forming and projecting high precision optical images

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914038A (en) * 1973-05-03 1975-10-21 Stephen A Liguori Method and apparatus for providing a stationary film record having sequentially displayable images
US4209237A (en) * 1978-12-11 1980-06-24 Marvin Glass & Associates Drawing device
US4656506A (en) * 1983-02-25 1987-04-07 Ritchey Kurtis J Spherical projection system
US5085506A (en) * 1986-05-09 1992-02-04 Greyhawk Systems, Inc. Apparatus and method of forming and projecting high precision optical images
DE19510691A1 (de) * 1995-03-14 1996-09-19 Joachim Maass Helligkeitsblende für Bildprojektoren
US6871961B2 (en) * 2001-09-20 2005-03-29 Elumens Corporation Systems and methods for tiling multiple projectors to form an image

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3338131A (en) * 1965-10-12 1967-08-29 Kollsman Instr Corp Apparatus for selectively superimposing projected images
US3598035A (en) * 1968-04-08 1971-08-10 Indentification Dev Corp Lens assembly
US3566370A (en) * 1969-06-10 1971-02-23 Searle Medidata Inc Automated medical history taking system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249326A1 (en) * 1986-05-09 1987-12-16 Greyhawk Systems, Inc. Apparatus of forming and projecting high precision optical images

Also Published As

Publication number Publication date
FR2076114A1 (enExample) 1971-10-15
CA954350A (en) 1974-09-10
US3768899A (en) 1973-10-30
NL7006922A (enExample) 1971-07-19
ES375479A1 (es) 1972-05-16
DE2034431C3 (de) 1979-03-15
DE2034431B2 (de) 1978-07-13
JPS5023812B1 (enExample) 1975-08-11
DE2034431A1 (de) 1971-07-22
FR2076114B1 (enExample) 1976-04-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee