GB920850A - An objective lens mounting for projectors - Google Patents

An objective lens mounting for projectors

Info

Publication number
GB920850A
GB920850A GB4195660A GB4195660A GB920850A GB 920850 A GB920850 A GB 920850A GB 4195660 A GB4195660 A GB 4195660A GB 4195660 A GB4195660 A GB 4195660A GB 920850 A GB920850 A GB 920850A
Authority
GB
United Kingdom
Prior art keywords
objective lens
sleeve
pin
focusing
projectors
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
GB4195660A
Inventor
Siegfried Zeibig
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.)
Kamera und Kinowerke Dresden VEB
Original Assignee
Kamera und Kinowerke Dresden VEB
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 Kamera und Kinowerke Dresden VEB filed Critical Kamera und Kinowerke Dresden VEB
Priority to GB4195660A priority Critical patent/GB920850A/en
Publication of GB920850A publication Critical patent/GB920850A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/023Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

920,850. Objective lens mounting for projectors. KAMERAUND KINOWERKE DRESDEN VEB. Dec. 6, 1960, No. 41956/60. Class 97 (1). An objective lens mounting for projectors, comprises a carrier for attachment to the projector, and a first cylindrical sleeve slidable and rotatable within said carrier and capable of receiving by means of a screw thread or bayonet connection an interchangeable objective lens, or an intermediate sleeve supporting said objective lens, said first sleeve being provided with a helical groove or slot terminating in stops, into which groove or slot there extends a pin against which said stops abut when the objective lens, or the objective lens together with the intermediate sleeve, is rotated for removal thereof from or insertion into the first sleeve. As shown, an objective lens 20, releasably secured in an intermediate tube 19 by means of a screw 21, is exchangeably fitted to an adjustable focusing sleeve 5 by means of threading 18 (as illustrated) or alternatively by means of a bayonet connection. Sleeve 5 is provided for coarse focusing purposes with a cam groove 6 engaged by a pin 9 and, for fine focusing purposes, this pin 9 is eccentrically mounted on a shaft 10 rotatably coupled to a reversible motor 13 by way of worm gearing 12, 11. A flange portion 14 of the gear 11 is provided with two index marks 15 which indicate (when either of them is visible through a window 16 in projector housing 1) that the pin 9 of the fine focusing adjustment is in a correct starting position. The coarse focusing is effected manually on rotation of a milled ring 22 on the objective lens 20, whereas fine focusing may be effected remotely through the motor 13.
GB4195660A 1960-12-06 1960-12-06 An objective lens mounting for projectors Expired GB920850A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4195660A GB920850A (en) 1960-12-06 1960-12-06 An objective lens mounting for projectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4195660A GB920850A (en) 1960-12-06 1960-12-06 An objective lens mounting for projectors

Publications (1)

Publication Number Publication Date
GB920850A true GB920850A (en) 1963-03-13

Family

ID=10422142

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4195660A Expired GB920850A (en) 1960-12-06 1960-12-06 An objective lens mounting for projectors

Country Status (1)

Country Link
GB (1) GB920850A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1024395A2 (en) * 1999-01-29 2000-08-02 Matsushita Electric Industrial Co., Ltd. Liquid crystal projector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1024395A2 (en) * 1999-01-29 2000-08-02 Matsushita Electric Industrial Co., Ltd. Liquid crystal projector
EP1024395B1 (en) * 1999-01-29 2006-01-18 Matsushita Electric Industrial Co., Ltd. Liquid crystal projector

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