GB563973A - Optical comparators - Google Patents

Optical comparators

Info

Publication number
GB563973A
GB563973A GB449643A GB449643A GB563973A GB 563973 A GB563973 A GB 563973A GB 449643 A GB449643 A GB 449643A GB 449643 A GB449643 A GB 449643A GB 563973 A GB563973 A GB 563973A
Authority
GB
United Kingdom
Prior art keywords
reflector
prism
optical
comparators
optical comparators
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
GB449643A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB449643A priority Critical patent/GB563973A/en
Publication of GB563973A publication Critical patent/GB563973A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/0004—Microscopes specially adapted for specific applications
    • G02B21/0016—Technical microscopes, e.g. for inspection or measuring in industrial production processes

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Telescopes (AREA)
  • Microscoopes, Condenser (AREA)

Abstract

563,973. Optical Comparators. KNOWLSON, R. F., and DALL, H. E. March 19, 1943, No. 4496. [Class 97 (i)] A comparator for objects D, O, comprises an objective E having part of its field covered by a reflector C for rays from the object D, an erecting prism A between the reflector C and object D, a lens B in the path from object D or object O to compensate for the difference of length of the paths, and an eye-piece G, or a projecting lens system and projection screen ; a prism F may be provided to deflect the optical axis through 45 degrees and to erect and invert the image. The object 0 may be a form tool being ground, and the object D may be a scale drawing thereof fixed on a wall. Accurate superposition of the images may be obtained by means of adjustable arms supporting the instrument, a rotatable housing M for the prism A and a screw H for tilting the reflector C ; aperture plates L, N may also be provided.
GB449643A 1943-03-19 1943-03-19 Optical comparators Expired GB563973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB449643A GB563973A (en) 1943-03-19 1943-03-19 Optical comparators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB449643A GB563973A (en) 1943-03-19 1943-03-19 Optical comparators

Publications (1)

Publication Number Publication Date
GB563973A true GB563973A (en) 1944-09-07

Family

ID=9778274

Family Applications (1)

Application Number Title Priority Date Filing Date
GB449643A Expired GB563973A (en) 1943-03-19 1943-03-19 Optical comparators

Country Status (1)

Country Link
GB (1) GB563973A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881656A (en) * 1957-07-15 1959-04-14 Sutter Alexander Postage stamp-examining appliance
US3511571A (en) * 1966-02-28 1970-05-12 Hugh Malcolm Ogle Method and apparatus for comparing patterns
US6093942A (en) * 1998-05-07 2000-07-25 Kabushiki Kaisha Toshiba Semiconductor device with improved pad layout

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881656A (en) * 1957-07-15 1959-04-14 Sutter Alexander Postage stamp-examining appliance
US3511571A (en) * 1966-02-28 1970-05-12 Hugh Malcolm Ogle Method and apparatus for comparing patterns
US6093942A (en) * 1998-05-07 2000-07-25 Kabushiki Kaisha Toshiba Semiconductor device with improved pad layout

Similar Documents

Publication Publication Date Title
US2336330A (en) Range finder
GB563973A (en) Optical comparators
GB869627A (en) Improvements in apparatus for testing alignment and directions
GB918213A (en) Improvements relating to infra-red periscopes
GB612531A (en) Improvements in or relating to combined view finders and range finders for photographic cameras
GB862734A (en) A prism combination for altering the light path through a camera-microscope
GB684292A (en) Improvements in or relating to optical aligning instruments
GB650826A (en) Improvements in or relating to optical apparatus
GB874417A (en) Microscope comprising a beam-splitter for the simultaneous imaging of an object in several equivalent image planes
GB836195A (en) Improvements relating to optical distance measuring devices
GB637198A (en) Improvements in or relating to microscopes
GB563872A (en) Improvements in optical instruments for the precise measurement of angles
GB688819A (en) Improvements in or relating to electroscopes
SU678282A1 (en) Stereo tacheometer
GB570022A (en) A projection system for the inspection of internal surfaces
GB851487A (en) Optical finders
GB398250A (en) Improvements in optical systems for the measurement of angles
GB1152973A (en) Axially Measuring Ophthalmometer
GB725862A (en) Improvements in or relating to artificial horizons
GB900285A (en) Prism or mirror system for the adjusting of parts of optical instruments
GB888841A (en) Optical sighting instrument
GB605484A (en) Improvements in or relating to range finders
GB985935A (en) Improvements in or relating to telescopes
GB1286421A (en) Optical device for testing alignment and direction
GB986447A (en) Arrangement in connection with monostatic range-finders