GB1476583A - Fine focus assembly - Google Patents

Fine focus assembly

Info

Publication number
GB1476583A
GB1476583A GB1040075A GB1040075A GB1476583A GB 1476583 A GB1476583 A GB 1476583A GB 1040075 A GB1040075 A GB 1040075A GB 1040075 A GB1040075 A GB 1040075A GB 1476583 A GB1476583 A GB 1476583A
Authority
GB
United Kingdom
Prior art keywords
lamina
piezoelectric
lens
secured
housing
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
GB1040075A
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.)
Geometric Data Corp
Original Assignee
Geometric Data Corp
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 Geometric Data Corp filed Critical Geometric Data Corp
Priority to GB1040075A priority Critical patent/GB1476583A/en
Publication of GB1476583A publication Critical patent/GB1476583A/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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/24—Base structure
    • G02B21/241—Devices for focusing
    • G02B21/242—Devices for focusing with coarse and fine adjustment mechanism

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Lens Barrels (AREA)

Abstract

1476583 Piezoelectric motors GEOMETRIC DATA CORP 13 March 1975 10400/75 Heading H2A [Also in Division G2] A lens mount includes a piezoelectric element whereby the lens may be moved along its optic axis to effect fine focusing. As described (Fig. 3) a lens tube 40 is supported in housing 46 by leaf springs 42, 48 which lie in parallel planes and whose long directions are orthogonal. A lamina 38 is secured to the tube 40 at its centre and rests on the housing 46 under pressure of spring 36. The piezoelectric material is secured to one face of the lamina 38 whereby application of a voltage causes the lamina to bow. The device is intended for fine adjustment of microscope objectives. If accidentally contacted by the object, the lens tube moves axially and the piezoelectric coated lamina 38 rides against spring 36 to avoid damage. The lamina 38 may carry piezoelectric strain gauges which are connected to a Wheatstone bridge, the output of which indicate the amount of displacement effected.
GB1040075A 1975-03-13 1975-03-13 Fine focus assembly Expired GB1476583A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1040075A GB1476583A (en) 1975-03-13 1975-03-13 Fine focus assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1040075A GB1476583A (en) 1975-03-13 1975-03-13 Fine focus assembly

Publications (1)

Publication Number Publication Date
GB1476583A true GB1476583A (en) 1977-06-16

Family

ID=9967137

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1040075A Expired GB1476583A (en) 1975-03-13 1975-03-13 Fine focus assembly

Country Status (1)

Country Link
GB (1) GB1476583A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119955A (en) * 1982-04-26 1983-11-23 Leitz Ernst Gmbh Focussing means in a microscope
US4511212A (en) * 1981-09-22 1985-04-16 Mansei Kogyo Kabushiki Kaisha Focussing lens operating device
GB2233107A (en) * 1989-06-07 1991-01-02 Unisys Corp "lens shuttle mechanism for microfilmer camera".
EP2120081A1 (en) 2008-05-16 2009-11-18 FFEI Limited Lens positioning assembly

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4511212A (en) * 1981-09-22 1985-04-16 Mansei Kogyo Kabushiki Kaisha Focussing lens operating device
GB2119955A (en) * 1982-04-26 1983-11-23 Leitz Ernst Gmbh Focussing means in a microscope
FR2527341A1 (en) * 1982-04-26 1983-11-25 Leitz Ernst Gmbh CONTROL FOR THE DEVELOPMENT OF A MICROSCOPE
GB2233107A (en) * 1989-06-07 1991-01-02 Unisys Corp "lens shuttle mechanism for microfilmer camera".
US5014085A (en) * 1989-06-07 1991-05-07 Unisys Corporation Lens shuttle mechanism for microfilm camera
GB2233107B (en) * 1989-06-07 1993-09-01 Unisys Corp Lens shuttle mechanism for microfilmer camera
EP2120081A1 (en) 2008-05-16 2009-11-18 FFEI Limited Lens positioning assembly
US7733586B2 (en) 2008-05-16 2010-06-08 Ffei Limited Lens positioning assembly

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee