GB1483300A - Projectors - Google Patents

Projectors

Info

Publication number
GB1483300A
GB1483300A GB5230675A GB5230675A GB1483300A GB 1483300 A GB1483300 A GB 1483300A GB 5230675 A GB5230675 A GB 5230675A GB 5230675 A GB5230675 A GB 5230675A GB 1483300 A GB1483300 A GB 1483300A
Authority
GB
United Kingdom
Prior art keywords
lamp
reflects
projectors
ritzerfeld
disked
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
GB5230675A
Other languages
English (en)
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
Priority claimed from DE19752505316 external-priority patent/DE2505316A1/de
Priority claimed from DE19752515387 external-priority patent/DE2515387A1/de
Application filed by Individual filed Critical Individual
Publication of GB1483300A publication Critical patent/GB1483300A/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
    • G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action
    • 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
    • G03B21/14—Details
    • G03B21/20—Lamp housings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
GB5230675A 1975-02-03 1975-12-22 Projectors Expired GB1483300A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19752505316 DE2505316A1 (de) 1975-02-03 1975-02-03 Tageslichtprojektor
DE19752515387 DE2515387A1 (de) 1975-04-09 1975-04-09 Tageslichtprojektor

Publications (1)

Publication Number Publication Date
GB1483300A true GB1483300A (en) 1977-08-17

Family

ID=25768471

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5230675A Expired GB1483300A (en) 1975-02-03 1975-12-22 Projectors

Country Status (3)

Country Link
DK (1) DK542175A (enExample)
FR (1) FR2299663A1 (enExample)
GB (1) GB1483300A (enExample)

Also Published As

Publication number Publication date
DK542175A (da) 1976-08-04
FR2299663A1 (fr) 1976-08-27
FR2299663B3 (enExample) 1979-10-05

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee