GB179849A - Improvements in condensers for optical projection apparatus - Google Patents

Improvements in condensers for optical projection apparatus

Info

Publication number
GB179849A
GB179849A GB1736821A GB1736821A GB179849A GB 179849 A GB179849 A GB 179849A GB 1736821 A GB1736821 A GB 1736821A GB 1736821 A GB1736821 A GB 1736821A GB 179849 A GB179849 A GB 179849A
Authority
GB
United Kingdom
Prior art keywords
condensers
projection apparatus
optical projection
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
GB1736821A
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 GB1736821A priority Critical patent/GB179849A/en
Publication of GB179849A publication Critical patent/GB179849A/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
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/208—Homogenising, shaping of the illumination light

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
GB1736821A 1921-06-24 1921-06-24 Improvements in condensers for optical projection apparatus Expired GB179849A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1736821A GB179849A (en) 1921-06-24 1921-06-24 Improvements in condensers for optical projection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1736821A GB179849A (en) 1921-06-24 1921-06-24 Improvements in condensers for optical projection apparatus

Publications (1)

Publication Number Publication Date
GB179849A true GB179849A (en) 1922-05-18

Family

ID=10093968

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1736821A Expired GB179849A (en) 1921-06-24 1921-06-24 Improvements in condensers for optical projection apparatus

Country Status (1)

Country Link
GB (1) GB179849A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11834866B2 (en) 2018-11-06 2023-12-05 Amesbury Group, Inc. Flexible coupling for electronic deadbolt systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11834866B2 (en) 2018-11-06 2023-12-05 Amesbury Group, Inc. Flexible coupling for electronic deadbolt systems

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