GB677704A - Improvements relating to focussing devices for objectives, especially of optical projectors for still pictures - Google Patents

Improvements relating to focussing devices for objectives, especially of optical projectors for still pictures

Info

Publication number
GB677704A
GB677704A GB31292/50A GB3129250A GB677704A GB 677704 A GB677704 A GB 677704A GB 31292/50 A GB31292/50 A GB 31292/50A GB 3129250 A GB3129250 A GB 3129250A GB 677704 A GB677704 A GB 677704A
Authority
GB
United Kingdom
Prior art keywords
objectives
improvements relating
still pictures
optical projectors
focussing devices
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
GB31292/50A
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.)
Agfa Gevaert NV
Original Assignee
Agfa Camera Werk AG
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 Agfa Camera Werk AG filed Critical Agfa Camera Werk AG
Publication of GB677704A publication Critical patent/GB677704A/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)
  • Lens Barrels (AREA)

Abstract

677,704. Lens mounts. AGFA CAMERA WERK MUNCHEN, U.S. ADMINISTRATION. Dec. 22, 1950 [Dec. 27, 1949], No. 31292/50. Drawings to Specification. Class 97 (i). An objective is focused by a friction roller engaging the mount. The friction roller, rotatable by a milled knob, may be mounted to project through a transverse slot in a tube in which the lens mount slides, the tube being lined with velvet to reduce friction.
GB31292/50A 1949-12-27 1950-12-22 Improvements relating to focussing devices for objectives, especially of optical projectors for still pictures Expired GB677704A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE677704X 1949-12-27

Publications (1)

Publication Number Publication Date
GB677704A true GB677704A (en) 1952-08-20

Family

ID=6594157

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31292/50A Expired GB677704A (en) 1949-12-27 1950-12-22 Improvements relating to focussing devices for objectives, especially of optical projectors for still pictures

Country Status (1)

Country Link
GB (1) GB677704A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060797A (en) * 1959-09-03 1962-10-30 Bausch & Lomb Slide projector
US3145249A (en) * 1962-01-02 1964-08-18 Bausch & Lomb Endoscope window

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060797A (en) * 1959-09-03 1962-10-30 Bausch & Lomb Slide projector
US3145249A (en) * 1962-01-02 1964-08-18 Bausch & Lomb Endoscope window

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