GB375820A - Improvements in optical apparatus for testing, comparing and gauging dimensions - Google Patents

Improvements in optical apparatus for testing, comparing and gauging dimensions

Info

Publication number
GB375820A
GB375820A GB957431A GB957431A GB375820A GB 375820 A GB375820 A GB 375820A GB 957431 A GB957431 A GB 957431A GB 957431 A GB957431 A GB 957431A GB 375820 A GB375820 A GB 375820A
Authority
GB
United Kingdom
Prior art keywords
reflectors
objects
reflector
condenser
screen
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
GB957431A
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.)
PREC TOOL AND INSTR Co LT
WALTER HERBERT SMITH
Original Assignee
PREC TOOL AND INSTR Co LT
WALTER HERBERT SMITH
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 PREC TOOL AND INSTR Co LT, WALTER HERBERT SMITH filed Critical PREC TOOL AND INSTR Co LT
Priority to GB957431A priority Critical patent/GB375820A/en
Publication of GB375820A publication Critical patent/GB375820A/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)
  • Length Measuring Devices By Optical Means (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)

Abstract

375,820. Optical systems. SMITH, W. H. and PRECISION TOOL & INSTRUMENT CO., Ltd., 72, Newington Butts, London. March 30, 1931, No. 9574. [Class 97 (i).] An optical apparatus for illuminating points or lines on objects such as screws &c. or the objects themselves comprises one or more mirrors, prisms or reflecting surfaces suitably mounted on the illumination side of a projector apparatus proper to enable the superposing of images of similar parts of objects, or to obtain virtual images of different parts in desired relationship for the purpose of projecting on to a screen. As shown in the Figure, light fiom a source Z passes through a condenser Y to reflectors A<1> illuminating an object X such as a gear wheel. Reflectors A<2> receive the image and pass it through a lens W which projects it on to a screen V. In a second form, the object is illuminated directly and the reflector system is between the object and the projecting lens. In a third form, a plain glass reflector arranged at an angle thiows the beam from the condenser on to the object and a concave reflector reflects the beam back through the plain glass reflector to the projecting lens. The carrier or support for the reflectors may be rotatable.
GB957431A 1931-03-30 1931-03-30 Improvements in optical apparatus for testing, comparing and gauging dimensions Expired GB375820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB957431A GB375820A (en) 1931-03-30 1931-03-30 Improvements in optical apparatus for testing, comparing and gauging dimensions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB957431A GB375820A (en) 1931-03-30 1931-03-30 Improvements in optical apparatus for testing, comparing and gauging dimensions

Publications (1)

Publication Number Publication Date
GB375820A true GB375820A (en) 1932-06-30

Family

ID=9874603

Family Applications (1)

Application Number Title Priority Date Filing Date
GB957431A Expired GB375820A (en) 1931-03-30 1931-03-30 Improvements in optical apparatus for testing, comparing and gauging dimensions

Country Status (1)

Country Link
GB (1) GB375820A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2508764A (en) * 1945-05-22 1950-05-23 William C Miller Optical projection system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2508764A (en) * 1945-05-22 1950-05-23 William C Miller Optical projection system

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