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FR2267558A2 - Heliograph with glass light guide - has glass core surrounded by glass of lower refractive indices - Google Patents

Heliograph with glass light guide - has glass core surrounded by glass of lower refractive indices

Info

Publication number
FR2267558A2
FR2267558A2 FR7412952A FR7412952A FR2267558A2 FR 2267558 A2 FR2267558 A2 FR 2267558A2 FR 7412952 A FR7412952 A FR 7412952A FR 7412952 A FR7412952 A FR 7412952A FR 2267558 A2 FR2267558 A2 FR 2267558A2
Authority
FR
France
Prior art keywords
glass
light guide
heliograph
refractive index
lower refractive
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.)
Granted
Application number
FR7412952A
Other languages
French (fr)
Other versions
FR2267558B2 (en
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to FR7412952A priority Critical patent/FR2267558A2/en
Publication of FR2267558A2 publication Critical patent/FR2267558A2/en
Application granted granted Critical
Publication of FR2267558B2 publication Critical patent/FR2267558B2/fr
Granted legal-status Critical Current

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
    • G01J1/02—Details
    • G01J1/04—Optical or mechanical part supplementary adjustable parts
    • 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
    • G01J1/02—Details
    • G01J1/04—Optical or mechanical part supplementary adjustable parts
    • G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01W—METEOROLOGY
    • G01W1/00—Meteorology
    • G01W1/12—Sunshine duration recorders
    • 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
    • G01J1/02—Details
    • G01J1/04—Optical or mechanical part supplementary adjustable parts
    • G01J1/0488—Optical or mechanical part supplementary adjustable parts with spectral filtering
    • 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
    • G01J2001/4266—Photometry, e.g. photographic exposure meter using electric radiation detectors for measuring solar light

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental Sciences (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

A heliograph employs a tube, parallel to the axis of the earth, driven in rotation at high speed. Solar rays received by the tube are analysed electronically after passage by a light guide. A light guide with a circular cross section has a central area of glass with a particular refractive index. This area is surrounded by a glass section having a different and lower refractive index. A rectangular cross section guide may have several outer layers to give a quadratric function of refractive index. The different indices permits the adjustment of angles of incidence such that total reflection of solar radiation is achieved as a function of the aperture angle in either plane.
FR7412952A 1974-04-12 1974-04-12 Heliograph with glass light guide - has glass core surrounded by glass of lower refractive indices Granted FR2267558A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7412952A FR2267558A2 (en) 1974-04-12 1974-04-12 Heliograph with glass light guide - has glass core surrounded by glass of lower refractive indices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7412952A FR2267558A2 (en) 1974-04-12 1974-04-12 Heliograph with glass light guide - has glass core surrounded by glass of lower refractive indices

Publications (2)

Publication Number Publication Date
FR2267558A2 true FR2267558A2 (en) 1975-11-07
FR2267558B2 FR2267558B2 (en) 1976-10-08

Family

ID=9137614

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7412952A Granted FR2267558A2 (en) 1974-04-12 1974-04-12 Heliograph with glass light guide - has glass core surrounded by glass of lower refractive indices

Country Status (1)

Country Link
FR (1) FR2267558A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004242A1 (en) * 1978-03-09 1979-09-19 Philippe Gravisse Solar radiation concentrator
FR2506953A1 (en) * 1981-06-01 1982-12-03 Alsthom Cgee Infrared beam barrier surveillance system - comprises conical reflector collecting radiation from wide angle for IR sensitive diode

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004242A1 (en) * 1978-03-09 1979-09-19 Philippe Gravisse Solar radiation concentrator
WO1979000731A1 (en) * 1978-03-09 1979-10-04 Gravisse Philippe Edouard Solar radiation concentrator
FR2506953A1 (en) * 1981-06-01 1982-12-03 Alsthom Cgee Infrared beam barrier surveillance system - comprises conical reflector collecting radiation from wide angle for IR sensitive diode

Also Published As

Publication number Publication date
FR2267558B2 (en) 1976-10-08

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Legal Events

Date Code Title Description
TP Transmission of property