BE776825A - Dispositif optique a occultation et ses applications. - Google Patents

Dispositif optique a occultation et ses applications.

Info

Publication number
BE776825A
BE776825A BE776825A BE776825A BE776825A BE 776825 A BE776825 A BE 776825A BE 776825 A BE776825 A BE 776825A BE 776825 A BE776825 A BE 776825A BE 776825 A BE776825 A BE 776825A
Authority
BE
Belgium
Prior art keywords
occultation
applications
optical device
optical
occultation optical
Prior art date
Application number
BE776825A
Other languages
English (en)
Original Assignee
Seneca Plastics Ltd
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 Seneca Plastics Ltd filed Critical Seneca Plastics Ltd
Priority to BE776825A priority Critical patent/BE776825A/fr
Publication of BE776825A publication Critical patent/BE776825A/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/02—Viewing or reading apparatus
    • G02B27/022—Viewing apparatus
    • G02B27/024—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies
    • G02B27/025—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies and magnifying means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/008—Systems specially adapted to form image relays or chained systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/02—Viewing or reading apparatus
    • G02B27/022—Viewing apparatus
    • G02B27/024—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/22—Advertising or display means on roads, walls or similar surfaces, e.g. illuminated

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
BE776825A 1971-12-16 1971-12-16 Dispositif optique a occultation et ses applications. BE776825A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE776825A BE776825A (fr) 1971-12-16 1971-12-16 Dispositif optique a occultation et ses applications.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE776825A BE776825A (fr) 1971-12-16 1971-12-16 Dispositif optique a occultation et ses applications.

Publications (1)

Publication Number Publication Date
BE776825A true BE776825A (fr) 1972-04-17

Family

ID=3859015

Family Applications (1)

Application Number Title Priority Date Filing Date
BE776825A BE776825A (fr) 1971-12-16 1971-12-16 Dispositif optique a occultation et ses applications.

Country Status (1)

Country Link
BE (1) BE776825A (fr)

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