GB355476A - Improvements in or relating to lens mounts for optical-projection apparatus - Google Patents

Improvements in or relating to lens mounts for optical-projection apparatus

Info

Publication number
GB355476A
GB355476A GB23081/30A GB2308130A GB355476A GB 355476 A GB355476 A GB 355476A GB 23081/30 A GB23081/30 A GB 23081/30A GB 2308130 A GB2308130 A GB 2308130A GB 355476 A GB355476 A GB 355476A
Authority
GB
United Kingdom
Prior art keywords
tube
lens
slots
tubes
fixed
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
GB23081/30A
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.)
ARNOLD OSBORNE GIBBONS
PERCIVAL PILGRIM
Original Assignee
ARNOLD OSBORNE GIBBONS
PERCIVAL PILGRIM
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 ARNOLD OSBORNE GIBBONS, PERCIVAL PILGRIM filed Critical ARNOLD OSBORNE GIBBONS
Priority to GB23081/30A priority Critical patent/GB355476A/en
Publication of GB355476A publication Critical patent/GB355476A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)

Abstract

355,476. Lens mounts. GIBBONS, A. O., 100, Norroy Road, Putney, and PILGRIM, P., 14, Fernside Road, Balham, both in London. July 31, 1930, No. 23081. [Class 97 (i).] A lens mount for optical-projection apparatus enabling the image to be varied in size while remaining in focus in a fixed plane comprises two lens carriers e, f slidably mounted within coaxial tubes a, b. The outer tube a which is fixed is provided with longitudinal slots b and the inner tube c is provided with helical slots d. Pins &c. g on the lens carriers pass through the slots in both tubes. The tube c carries at one end a collar h provided with a lever i by which the tube can be rotated, stops l being provided to limit the angle of rotation. The rotation of the tube c causes the lens carriers to be displaced along the axis of the tubes, the arrangement of the slots d being such that the lens carriers will always be moved simultaneously either towards or away from a fixed imaginary plane between them, but will not at any time be moved simultaneously in the same direction.
GB23081/30A 1930-07-31 1930-07-31 Improvements in or relating to lens mounts for optical-projection apparatus Expired GB355476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB23081/30A GB355476A (en) 1930-07-31 1930-07-31 Improvements in or relating to lens mounts for optical-projection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23081/30A GB355476A (en) 1930-07-31 1930-07-31 Improvements in or relating to lens mounts for optical-projection apparatus

Publications (1)

Publication Number Publication Date
GB355476A true GB355476A (en) 1931-08-27

Family

ID=10189807

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23081/30A Expired GB355476A (en) 1930-07-31 1930-07-31 Improvements in or relating to lens mounts for optical-projection apparatus

Country Status (1)

Country Link
GB (1) GB355476A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1165350B (en) * 1958-03-25 1964-03-12 Leitz Ernst Gmbh Closed guide, especially cylinder guide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1165350B (en) * 1958-03-25 1964-03-12 Leitz Ernst Gmbh Closed guide, especially cylinder guide

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