GB1512037A - Optical focusing system - Google Patents

Optical focusing system

Info

Publication number
GB1512037A
GB1512037A GB2367975A GB2367975A GB1512037A GB 1512037 A GB1512037 A GB 1512037A GB 2367975 A GB2367975 A GB 2367975A GB 2367975 A GB2367975 A GB 2367975A GB 1512037 A GB1512037 A GB 1512037A
Authority
GB
United Kingdom
Prior art keywords
movement
lens
path
light
optical
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
GB2367975A
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.)
Decca Ltd
Original Assignee
Decca Ltd
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 Decca Ltd filed Critical Decca Ltd
Priority to GB2367975A priority Critical patent/GB1512037A/en
Publication of GB1512037A publication Critical patent/GB1512037A/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
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/30—Systems for automatic generation of focusing signals using parallactic triangle with a base line
    • G02B7/32—Systems for automatic generation of focusing signals using parallactic triangle with a base line using active means, e.g. light emitter
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/10—Scanning systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

1512037 Optical scanning and focusing system DECCA Ltd 22 June 1976 [30 May 1975] 23679/75 Heading G2J For scanning and focusing a coherent light beam in an optical detection system in which the beam is directed at a moving or vibrating object and light reflected back from the object is mixed with reference light in order to derive a Doppler signal which represents the movement of the object, there is provided an optical focusing system comprising three lenses which are spaced apart along the path of the light and have their axes aligned with that path, of which lenses a first is substantially stronger than the other two and is mounted for movement substantially in a plane normal to the path of light, a second is between the first and the third lens and is movable along the optical path to alter the focal length of the focusing system. The first lens is supported on the free end of a cantilever such as to permit movement in two orthogonal planes. A circular movement may be imposed on the scanning movement of the lens by the actuation of Piezoelectric bimorphs spaced around the lens.
GB2367975A 1976-06-22 1976-06-22 Optical focusing system Expired GB1512037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2367975A GB1512037A (en) 1976-06-22 1976-06-22 Optical focusing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2367975A GB1512037A (en) 1976-06-22 1976-06-22 Optical focusing system

Publications (1)

Publication Number Publication Date
GB1512037A true GB1512037A (en) 1978-05-24

Family

ID=10199519

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2367975A Expired GB1512037A (en) 1976-06-22 1976-06-22 Optical focusing system

Country Status (1)

Country Link
GB (1) GB1512037A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7812058A (en) * 1977-12-16 1979-06-19 Mitsubishi Electric Corp AUTOMATIC FOCUS DEVICE.
GB2144873A (en) * 1983-08-12 1985-03-13 Fairey Eng Apparatus for scanning a laser beam
WO2006102971A3 (en) * 2005-03-26 2006-12-21 Zeiss Carl Meditec Ag Scanning device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7812058A (en) * 1977-12-16 1979-06-19 Mitsubishi Electric Corp AUTOMATIC FOCUS DEVICE.
EP0007902A1 (en) * 1977-12-16 1980-02-06 Mitsubishi Denki Kabushiki Kaisha Automatic focusing system
EP0007902A4 (en) * 1977-12-16 1980-05-06 Mitsubishi Electric Corp Automatic focusing system.
GB2144873A (en) * 1983-08-12 1985-03-13 Fairey Eng Apparatus for scanning a laser beam
WO2006102971A3 (en) * 2005-03-26 2006-12-21 Zeiss Carl Meditec Ag Scanning device
US8702770B2 (en) 2005-03-26 2014-04-22 Carl Zeiss Meditec Ag Femtosecond laser scanning device
US9261697B2 (en) 2005-03-26 2016-02-16 Carl Zeiss Meditec Ag Scanning device
US10092448B2 (en) 2005-03-26 2018-10-09 Carl Zeiss Meditec Ag Scanning device
US10517762B2 (en) 2005-03-26 2019-12-31 Carl Zeiss Meditec Ag Scanning device
US11058585B2 (en) 2005-03-26 2021-07-13 Carl Zeiss Meditec Ag Surgical laser system and method of focusing a luminous beam into a selected range of a volume of an eye to be treated

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19960621