GB792686A - Improvements in and relating to optical depth measuring devices - Google Patents

Improvements in and relating to optical depth measuring devices

Info

Publication number
GB792686A
GB792686A GB36025/55A GB3602555A GB792686A GB 792686 A GB792686 A GB 792686A GB 36025/55 A GB36025/55 A GB 36025/55A GB 3602555 A GB3602555 A GB 3602555A GB 792686 A GB792686 A GB 792686A
Authority
GB
United Kingdom
Prior art keywords
graduations
scale
depth
microscope
graticule
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
GB36025/55A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB792686A publication Critical patent/GB792686A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/18—Arrangements with more than one light path, e.g. for comparing two specimens
    • G02B21/20—Binocular arrangements
    • G02B21/22—Stereoscopic arrangements

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)

Abstract

792,686. Microscopes. GENERAL ELECTRIC CO. Dec. 15, 1955 [Dec. 15, 1954], No. 36025/55. Class 97(1) A stereoscopic microscope is provided with a pair of stereoscopic graticules by which an apparent depth scale is viewed in superposition and the object under examination whereby the depth of any indentations in the latter may be measured. As shown the microscope comprises a pair of tubes 13 each having an objective 16, a reversing prism 15 and an eyepiece 14. The left hand eyepiece carries a graticule 17 having two similar sets of equally spaced graduations 19, 20, Fig. 3. The right-hand eyepiece carries a graticule 18 having an upper set of equally spaced graduations 21, Fig. 4, spaced apart the same distance as the graduations 19 and 20, and a lower set 22 of differently spaced graduations. When viewed in the microscope the scales 19 and 21 are optically passed to . form a scale image in the plane of the object while the scales 20, 22 form an image of a scale sloping towards or away from the observer. By observing the appropriate graduations in the latter scale the depth of the object may be determined.
GB36025/55A 1954-12-15 1955-12-15 Improvements in and relating to optical depth measuring devices Expired GB792686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US792686XA 1954-12-15 1954-12-15

Publications (1)

Publication Number Publication Date
GB792686A true GB792686A (en) 1958-04-02

Family

ID=22149481

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36025/55A Expired GB792686A (en) 1954-12-15 1955-12-15 Improvements in and relating to optical depth measuring devices

Country Status (1)

Country Link
GB (1) GB792686A (en)

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