CH474082A - Boîtier pour écran de projection - Google Patents

Boîtier pour écran de projection

Info

Publication number
CH474082A
CH474082A CH1626067A CH1626067A CH474082A CH 474082 A CH474082 A CH 474082A CH 1626067 A CH1626067 A CH 1626067A CH 1626067 A CH1626067 A CH 1626067A CH 474082 A CH474082 A CH 474082A
Authority
CH
Switzerland
Prior art keywords
projection screen
screen housing
housing
projection
screen
Prior art date
Application number
CH1626067A
Other languages
English (en)
Inventor
Schell Chandler Jasper
Original Assignee
Kodak Sa
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 Kodak Sa filed Critical Kodak Sa
Publication of CH474082A publication Critical patent/CH474082A/fr

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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/58—Projection screens collapsible, e.g. foldable; of variable area

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Transforming Electric Information Into Light Information (AREA)
CH1626067A 1966-11-21 1967-11-21 Boîtier pour écran de projection CH474082A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US59567666A 1966-11-21 1966-11-21

Publications (1)

Publication Number Publication Date
CH474082A true CH474082A (fr) 1969-06-15

Family

ID=24384208

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1626067A CH474082A (fr) 1966-11-21 1967-11-21 Boîtier pour écran de projection

Country Status (5)

Country Link
US (1) US3469899A (fr)
BE (1) BE706791A (fr)
CH (1) CH474082A (fr)
DE (1) DE1572654B1 (fr)
GB (1) GB1214304A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114640833B (zh) * 2022-03-11 2024-07-02 峰米(重庆)创新科技有限公司 投影画面调整方法、装置、电子设备和存储介质

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US536790A (en) * 1895-04-02 Flash-light apparatus
US2867045A (en) * 1956-09-06 1959-01-06 Irvine H Millgate Visual instruction aids
US3205772A (en) * 1961-11-16 1965-09-14 Radiant Mfg Corp Keystone eliminator for portable projection screens

Also Published As

Publication number Publication date
US3469899A (en) 1969-09-30
BE706791A (fr) 1968-04-01
DE1572654B1 (de) 1970-06-25
GB1214304A (en) 1970-12-02

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Legal Events

Date Code Title Description
PL Patent ceased