GB838124A - Improvements in optical projection apparatus - Google Patents

Improvements in optical projection apparatus

Info

Publication number
GB838124A
GB838124A GB2283357A GB2283357A GB838124A GB 838124 A GB838124 A GB 838124A GB 2283357 A GB2283357 A GB 2283357A GB 2283357 A GB2283357 A GB 2283357A GB 838124 A GB838124 A GB 838124A
Authority
GB
United Kingdom
Prior art keywords
workpiece
prism
july
objective
reflected
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
GB2283357A
Inventor
Arthur Nigel Sibthorp
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.)
WATSON MANASTY AND CO Ltd
Original Assignee
WATSON MANASTY AND CO 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 WATSON MANASTY AND CO Ltd filed Critical WATSON MANASTY AND CO Ltd
Priority to GB2283357A priority Critical patent/GB838124A/en
Publication of GB838124A publication Critical patent/GB838124A/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)

Abstract

838,124. Optical-projection apparatus. WATSON, MANASTY & CO. Ltd. July 16, 1958 [July 18, 1957], No. 22833/57. Class 97(1) [Also in Group XIX] The apparatus comprises elements for forming on a screen juxtaposed episcopic and diascopic images respectively of a workpiece as seen from different planes at an angle. In the form shown light from a lamp 7 is collimated by a condenser 8 and reflected by a concave mirror 11 to illuminate a workpiece such as a type slug 4 for production of an episcopic image by the objective 5. A portion of the collimated beam is reflected by a mirror 9 and by a prism 10 so that the objective also forms a diascopic image of the profile of the end of the slug. The prism 10 equalises the two path lengths. In other embodiments the optical axes of the illuminating and projection systems are at right angles and plane mirrors provide the necessary allumination of the workpiece.
GB2283357A 1957-07-18 1957-07-18 Improvements in optical projection apparatus Expired GB838124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2283357A GB838124A (en) 1957-07-18 1957-07-18 Improvements in optical projection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2283357A GB838124A (en) 1957-07-18 1957-07-18 Improvements in optical projection apparatus

Publications (1)

Publication Number Publication Date
GB838124A true GB838124A (en) 1960-06-22

Family

ID=10185784

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2283357A Expired GB838124A (en) 1957-07-18 1957-07-18 Improvements in optical projection apparatus

Country Status (1)

Country Link
GB (1) GB838124A (en)

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