GB191640A - Improvements in optical projection screens - Google Patents

Improvements in optical projection screens

Info

Publication number
GB191640A
GB191640A GB508422A GB508422A GB191640A GB 191640 A GB191640 A GB 191640A GB 508422 A GB508422 A GB 508422A GB 508422 A GB508422 A GB 508422A GB 191640 A GB191640 A GB 191640A
Authority
GB
United Kingdom
Prior art keywords
optical projection
projection screens
screens
optical
projection
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
GB508422A
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
Application filed by Individual filed Critical Individual
Priority to GB508422A priority Critical patent/GB191640A/en
Publication of GB191640A publication Critical patent/GB191640A/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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/602—Lenticular screens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
GB508422A 1922-02-21 1922-02-21 Improvements in optical projection screens Expired GB191640A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB508422A GB191640A (en) 1922-02-21 1922-02-21 Improvements in optical projection screens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB508422A GB191640A (en) 1922-02-21 1922-02-21 Improvements in optical projection screens

Publications (1)

Publication Number Publication Date
GB191640A true GB191640A (en) 1923-01-18

Family

ID=9789453

Family Applications (1)

Application Number Title Priority Date Filing Date
GB508422A Expired GB191640A (en) 1922-02-21 1922-02-21 Improvements in optical projection screens

Country Status (1)

Country Link
GB (1) GB191640A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006965A (en) * 1974-04-18 1977-02-08 Ryosaku Takada Projection screen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006965A (en) * 1974-04-18 1977-02-08 Ryosaku Takada Projection screen

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