NO741870L - - Google Patents

Info

Publication number
NO741870L
NO741870L NO741870A NO741870A NO741870L NO 741870 L NO741870 L NO 741870L NO 741870 A NO741870 A NO 741870A NO 741870 A NO741870 A NO 741870A NO 741870 L NO741870 L NO 741870L
Authority
NO
Norway
Prior art keywords
projection
light source
projection head
head
projection device
Prior art date
Application number
NO741870A
Other languages
English (en)
Norwegian (no)
Inventor
Gerhard Ritzerfeld
Original Assignee
Gerhard Ritzerfeld
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 Gerhard Ritzerfeld filed Critical Gerhard Ritzerfeld
Publication of NO741870L publication Critical patent/NO741870L/no

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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
NO741870A 1973-06-23 1974-05-22 NO741870L (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2332662A DE2332662A1 (de) 1973-06-23 1973-06-23 Tageslicht-projektionsgeraet

Publications (1)

Publication Number Publication Date
NO741870L true NO741870L (xx) 1975-01-20

Family

ID=5885227

Family Applications (1)

Application Number Title Priority Date Filing Date
NO741870A NO741870L (xx) 1973-06-23 1974-05-22

Country Status (7)

Country Link
BE (1) BE814263A (xx)
CH (1) CH561434A5 (xx)
DE (1) DE2332662A1 (xx)
DK (1) DK333574A (xx)
FR (1) FR2234827A5 (xx)
GB (1) GB1424298A (xx)
NO (1) NO741870L (xx)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9311880U1 (de) * 1993-08-04 1993-10-14 AV-Kommunikation Anders + Kern GmbH & Co KG, 22851 Norderstedt Overhead-Projektor mit einem Variofocalobjektiv
DE19538795C2 (de) * 1995-10-18 1997-11-27 Peter Ochsenmeier Durchlicht-Overheadprojektor

Also Published As

Publication number Publication date
GB1424298A (en) 1976-02-11
DK333574A (xx) 1975-02-10
BE814263A (fr) 1974-08-16
DE2332662A1 (de) 1975-03-20
CH561434A5 (xx) 1975-04-30
FR2234827A5 (xx) 1975-01-17

Similar Documents

Publication Publication Date Title
US2252535A (en) Line-up and registering table for printers
NO741870L (xx)
US1840920A (en) Projecting apparatus
US2261741A (en) Headlight testing apparatus
US2197487A (en) Head lamp meter
US1994601A (en) Elevating device for projectors
GB560797A (en) Improvements in and relating to means for use in adjusting vehicle headlamps
US3531197A (en) Photographic apparatus support structure
US2028485A (en) Optical system and automatic control for the same
US960185A (en) Trigger-controller.
US1282224A (en) Adjustable light for projection-lanterns.
US1991928A (en) Device for testing, adjusting and focusing headlights
US2089388A (en) Motion picture projector
US2395074A (en) Photographic apparatus
US2228855A (en) Projector and gate mechanism therefor
US4109388A (en) Needle indicator for rail liner
US1968070A (en) Headlight tester
US1887524A (en) Headlight-tester
US2016034A (en) Projection system
US2853792A (en) Means and method for mounting stereoscopic transparencies
US1633253A (en) Projection tracing table
US2415568A (en) Photographic enlarger
US1987692A (en) Light testing apparatus
US1975017A (en) Optical projection apparatus
US2184012A (en) Photographic reproducing machine and copy holder therefor