GB780089A - Improvements in or relating to measuring instruments and gauges - Google Patents

Improvements in or relating to measuring instruments and gauges

Info

Publication number
GB780089A
GB780089A GB230555A GB230555A GB780089A GB 780089 A GB780089 A GB 780089A GB 230555 A GB230555 A GB 230555A GB 230555 A GB230555 A GB 230555A GB 780089 A GB780089 A GB 780089A
Authority
GB
United Kingdom
Prior art keywords
junction
photo
semi
dimension
type
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
GB230555A
Inventor
Ian George Archie Cresswell
Henry Stanley Blanks
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph 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 Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB230555A priority Critical patent/GB780089A/en
Publication of GB780089A publication Critical patent/GB780089A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Testing Or Measuring Of Semiconductors Or The Like (AREA)

Abstract

780,089. Photo-electric gauging apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Sept. 15, 1955 [Jan. 26, 1955], No. 2305/55. Class 40 (3). [Also in Group XXXVI] An instrument for gauging a dimension comprises separable members between which the specimen is received and a semi-conductor rectifying photo-junction across which a voltage is applied and which has a light pattern directed close to the junction, the arrangement being that the distance of the pattern from the junction varies with that of the dimension to be gauged so as to indicate the dimension on an electric current meter. As shown, the object to. be gauged is inserted between an anvil 3 and a ball-ended probe 4. Probe 4 is carried by flat springs 6, 7 and carries a block 11 of insulating material in which are mounted a pair of semi-conductor rectifying photo-junction of germanium P-N type. Fig. 2 shows the two junctions. An adjustable tube 19 carried on telescopic legs 17, 18 and containing lenses, a rotatable diaphragm and a light source directs a line of light 6 on the semiconductors so as to fall to one side of one interface in one case and the other side in the other. The connections are shown in Fig. 3, the semiconductors being arranged to form with potentiometer 30 a bridge circuit across which D.C. is applied from source 29. A current meter 31 is connected across the common cell connection and the potentiometer slider and is shunted at 33, 34 for adjustment. Fig. 4 shows an arrangement in which a pair of semi-conductors of P-N-P type have a wafer W of N type material on which are spots 15<SP>1</SP>, 16<SP>1</SP> of indium. In a further construction the small spots are on the same side.
GB230555A 1955-01-26 1955-01-26 Improvements in or relating to measuring instruments and gauges Expired GB780089A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB230555A GB780089A (en) 1955-01-26 1955-01-26 Improvements in or relating to measuring instruments and gauges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB230555A GB780089A (en) 1955-01-26 1955-01-26 Improvements in or relating to measuring instruments and gauges

Publications (1)

Publication Number Publication Date
GB780089A true GB780089A (en) 1957-07-31

Family

ID=9737222

Family Applications (1)

Application Number Title Priority Date Filing Date
GB230555A Expired GB780089A (en) 1955-01-26 1955-01-26 Improvements in or relating to measuring instruments and gauges

Country Status (1)

Country Link
GB (1) GB780089A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2216556A2 (en) * 1973-02-02 1974-08-30 Cem Comp Electro Mec
EP0092330A2 (en) * 1982-04-19 1983-10-26 The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Infra red photo detector systems

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2216556A2 (en) * 1973-02-02 1974-08-30 Cem Comp Electro Mec
EP0092330A2 (en) * 1982-04-19 1983-10-26 The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Infra red photo detector systems
EP0092330A3 (en) * 1982-04-19 1986-02-05 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Infra red photo detector systems
US4691107A (en) * 1982-04-19 1987-09-01 The Secretary Of State For Defence Infra red photo detector systems

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