FR2299663A1 - Projecteur en lumiere ambiante - Google Patents

Projecteur en lumiere ambiante

Info

Publication number
FR2299663A1
FR2299663A1 FR7538101A FR7538101A FR2299663A1 FR 2299663 A1 FR2299663 A1 FR 2299663A1 FR 7538101 A FR7538101 A FR 7538101A FR 7538101 A FR7538101 A FR 7538101A FR 2299663 A1 FR2299663 A1 FR 2299663A1
Authority
FR
France
Prior art keywords
ambient light
light projector
projector
ambient
light
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.)
Granted
Application number
FR7538101A
Other languages
English (en)
French (fr)
Other versions
FR2299663B3 (enExample
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 FR2299663A1 publication Critical patent/FR2299663A1/fr
Application granted granted Critical
Publication of FR2299663B3 publication Critical patent/FR2299663B3/fr
Granted 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)
FR7538101A 1975-02-03 1975-12-12 Projecteur en lumiere ambiante Granted FR2299663A1 (fr)

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 (2)

Publication Number Publication Date
FR2299663A1 true FR2299663A1 (fr) 1976-08-27
FR2299663B3 FR2299663B3 (enExample) 1979-10-05

Family

ID=25768471

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7538101A Granted FR2299663A1 (fr) 1975-02-03 1975-12-12 Projecteur en lumiere ambiante

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
FR2299663B3 (enExample) 1979-10-05
GB1483300A (en) 1977-08-17

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