SE456860B - Passive optical detector - Google Patents

Passive optical detector

Info

Publication number
SE456860B
SE456860B SE8701120A SE8701120A SE456860B SE 456860 B SE456860 B SE 456860B SE 8701120 A SE8701120 A SE 8701120A SE 8701120 A SE8701120 A SE 8701120A SE 456860 B SE456860 B SE 456860B
Authority
SE
Sweden
Prior art keywords
amplifier
output
grid
signal
stage
Prior art date
Application number
SE8701120A
Other languages
Swedish (sv)
Other versions
SE8701120D0 (en
SE8701120L (en
Inventor
R Andersson
Original Assignee
Silvergranen Innovation Ab
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 Silvergranen Innovation Ab filed Critical Silvergranen Innovation Ab
Priority to SE8701120A priority Critical patent/SE456860B/en
Publication of SE8701120D0 publication Critical patent/SE8701120D0/en
Publication of SE8701120L publication Critical patent/SE8701120L/en
Publication of SE456860B publication Critical patent/SE456860B/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

The photocells are optically directed towards a point, pref. at an infinite distance from them, for monitoring radiation e.g. daylight. They feed a signal processing circuit contg. a neutral passage amplifier, a signal forming stage, and a control circuit for an output signal stage. In their electrical counter-parallel coupling, the pair of photocells have one common conductor connected to an input of an operation amplifier, the other input of which is connected to their other common conductor. The amplifier output is connected to the signal processing circuit, and is also back-coupled to one of the amplifier inputs. The signal processing circuit neutral through passage amplifier, signal forming stage and control circuit each comprise exclusive-or grids. The thiro grid has its output connected to the grid of a field effect transistor comprising the output signal stage, and dependent upon output signals from this grid is passive or active for activation of an indicator.
SE8701120A 1987-03-18 1987-03-18 Passive optical detector SE456860B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8701120A SE456860B (en) 1987-03-18 1987-03-18 Passive optical detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8701120A SE456860B (en) 1987-03-18 1987-03-18 Passive optical detector

Publications (3)

Publication Number Publication Date
SE8701120D0 SE8701120D0 (en) 1987-03-18
SE8701120L SE8701120L (en) 1988-09-19
SE456860B true SE456860B (en) 1988-11-07

Family

ID=20367905

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8701120A SE456860B (en) 1987-03-18 1987-03-18 Passive optical detector

Country Status (1)

Country Link
SE (1) SE456860B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10031260B2 (en) 2013-12-19 2018-07-24 3M Innovative Properties Company Object sensor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111579063B (en) * 2020-04-11 2022-01-28 复旦大学 Flexible light sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10031260B2 (en) 2013-12-19 2018-07-24 3M Innovative Properties Company Object sensor

Also Published As

Publication number Publication date
SE8701120D0 (en) 1987-03-18
SE8701120L (en) 1988-09-19

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