GB1106246A - Improved "interferometer" - Google Patents

Improved "interferometer"

Info

Publication number
GB1106246A
GB1106246A GB3802865A GB3802865A GB1106246A GB 1106246 A GB1106246 A GB 1106246A GB 3802865 A GB3802865 A GB 3802865A GB 3802865 A GB3802865 A GB 3802865A GB 1106246 A GB1106246 A GB 1106246A
Authority
GB
United Kingdom
Prior art keywords
lens
test
plate
source
curvature
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
GB3802865A
Inventor
Barry John Biddle
Daniel Lobb
David John Day
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.)
BRITISH SCIENT INSTR RES ASS
Original Assignee
BRITISH SCIENT INSTR RES ASS
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 BRITISH SCIENT INSTR RES ASS filed Critical BRITISH SCIENT INSTR RES ASS
Priority to GB3802865A priority Critical patent/GB1106246A/en
Publication of GB1106246A publication Critical patent/GB1106246A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/02034—Interferometers characterised by particularly shaped beams or wavefronts
    • G01B9/02038—Shaping the wavefront, e.g. generating a spherical wavefront
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/02—Testing optical properties
    • G01M11/0207—Details of measuring devices
    • G01M11/0214—Details of devices holding the object to be tested
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/02—Testing optical properties
    • G01M11/0242—Testing optical properties by measuring geometrical properties or aberrations
    • G01M11/0271—Testing optical properties by measuring geometrical properties or aberrations by using interferometric methods

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Geometry (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

1,106,246. Interferometers. BRITISH SCIENTIFIC INSTRUMENT RESEARCH ASSOCIATION. Nov.16, 1966 [Sept.6, 1965], No.38028/65. Heading G2J. In an interferometer for testing the surface of a lens, monochromatic light is directed normally on to both the lens surface 12 and the master surface 13 of a reference plate 16, the lens and test plate being spaced apart. A correction plate 14 is oiled to the lens under test to provide the necessary concentric system. Concave lens surfaces are tested by reflection alone, a concentric reference plate being placed in front of the lens. As shown, light from source 9 is directed through microscope objective 11 and diverges from a focal point to the test surface. Reflected light returns through semi-silvered mirror 10 to eye-piece 18. The source 9 may be a mercury lamp or an HeNe gas laser. The radius of curvature of a test lens may be determined by measurement of the gap between the lens and a reference surface of known curvature.
GB3802865A 1965-09-06 1965-09-06 Improved "interferometer" Expired GB1106246A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3802865A GB1106246A (en) 1965-09-06 1965-09-06 Improved "interferometer"

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3802865A GB1106246A (en) 1965-09-06 1965-09-06 Improved "interferometer"

Publications (1)

Publication Number Publication Date
GB1106246A true GB1106246A (en) 1968-03-13

Family

ID=10400694

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3802865A Expired GB1106246A (en) 1965-09-06 1965-09-06 Improved "interferometer"

Country Status (1)

Country Link
GB (1) GB1106246A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2491613A1 (en) * 1980-10-06 1982-04-09 Vyssh Tekh Uchilishche Optical components surface checking interferometer - has beam splitter, reference surface and lens system forming interference pattern
WO2020201190A1 (en) * 2019-04-01 2020-10-08 Carl Zeiss Meditec Ag Testing device and method for measuring the homogeneity of an optical element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2491613A1 (en) * 1980-10-06 1982-04-09 Vyssh Tekh Uchilishche Optical components surface checking interferometer - has beam splitter, reference surface and lens system forming interference pattern
WO2020201190A1 (en) * 2019-04-01 2020-10-08 Carl Zeiss Meditec Ag Testing device and method for measuring the homogeneity of an optical element
CN113661374A (en) * 2019-04-01 2021-11-16 卡尔蔡司医疗技术股份公司 Test apparatus and method for measuring uniformity of optical elements

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