GB823832A - Apparatus for the calibration of a photoelectric reflection meter - Google Patents

Apparatus for the calibration of a photoelectric reflection meter

Info

Publication number
GB823832A
GB823832A GB39498/57A GB3949857A GB823832A GB 823832 A GB823832 A GB 823832A GB 39498/57 A GB39498/57 A GB 39498/57A GB 3949857 A GB3949857 A GB 3949857A GB 823832 A GB823832 A GB 823832A
Authority
GB
United Kingdom
Prior art keywords
calibration
meter
photo
photoelectric reflection
reflection meter
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
GB39498/57A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB823832A publication Critical patent/GB823832A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/55—Specular reflectivity

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

823,832. Calibrating photo-electric reflection meters. BOSCH, G.m.b.H., R. Dec. 19, 1957 [Dec. 22, 1956], No. 39498/57. Class 40 (3). A photo - electric reflection meter comprising a lamp 12 and an annular photo-cell 8 connected to a meter is calibrated by means of white discs 5 one of which is imperforate and the others perforated in varying degrees which are held in position by a bush 3 closed by a hollow cylinder 1 blackened on the inside.
GB39498/57A 1956-12-22 1957-12-19 Apparatus for the calibration of a photoelectric reflection meter Expired GB823832A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE823832X 1956-12-22

Publications (1)

Publication Number Publication Date
GB823832A true GB823832A (en) 1959-11-18

Family

ID=6747121

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39498/57A Expired GB823832A (en) 1956-12-22 1957-12-19 Apparatus for the calibration of a photoelectric reflection meter

Country Status (1)

Country Link
GB (1) GB823832A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4801804A (en) * 1986-09-30 1989-01-31 Trebor Industries, Inc. Method and apparatus for near infrared reflectance measurement of non-homogeneous materials
US4928014A (en) * 1988-10-03 1990-05-22 Futrex, Inc. Near-infrared apparatus and method for determining percent fat in a body
US4990772A (en) * 1988-10-03 1991-02-05 Futrex, Inc. Apparatus and method for calibrating a near-infrared interactance probe
US5028787A (en) * 1989-01-19 1991-07-02 Futrex, Inc. Non-invasive measurement of blood glucose

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4801804A (en) * 1986-09-30 1989-01-31 Trebor Industries, Inc. Method and apparatus for near infrared reflectance measurement of non-homogeneous materials
US4928014A (en) * 1988-10-03 1990-05-22 Futrex, Inc. Near-infrared apparatus and method for determining percent fat in a body
US4990772A (en) * 1988-10-03 1991-02-05 Futrex, Inc. Apparatus and method for calibrating a near-infrared interactance probe
US5028787A (en) * 1989-01-19 1991-07-02 Futrex, Inc. Non-invasive measurement of blood glucose

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