CH456189A - Projektionsapparat - Google Patents

Projektionsapparat

Info

Publication number
CH456189A
CH456189A CH891163A CH891163A CH456189A CH 456189 A CH456189 A CH 456189A CH 891163 A CH891163 A CH 891163A CH 891163 A CH891163 A CH 891163A CH 456189 A CH456189 A CH 456189A
Authority
CH
Switzerland
Prior art keywords
projection apparatus
projection
Prior art date
Application number
CH891163A
Other languages
English (en)
Inventor
Henry Appeldorn Roger
C Gilkeson David
Original Assignee
Minnesota Mining & Mfg
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 Minnesota Mining & Mfg filed Critical Minnesota Mining & Mfg
Publication of CH456189A publication Critical patent/CH456189A/de

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
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
CH891163A 1962-07-20 1963-07-17 Projektionsapparat CH456189A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21123062A 1962-07-20 1962-07-20

Publications (1)

Publication Number Publication Date
CH456189A true CH456189A (de) 1968-05-15

Family

ID=22786062

Family Applications (1)

Application Number Title Priority Date Filing Date
CH891163A CH456189A (de) 1962-07-20 1963-07-17 Projektionsapparat

Country Status (2)

Country Link
CH (1) CH456189A (de)
GB (1) GB1057685A (de)

Also Published As

Publication number Publication date
GB1057685A (en) 1967-02-08

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