JPS5774702A - Cylindrical fresnel lens and solar-ray collector - Google Patents

Cylindrical fresnel lens and solar-ray collector

Info

Publication number
JPS5774702A
JPS5774702A JP55150642A JP15064280A JPS5774702A JP S5774702 A JPS5774702 A JP S5774702A JP 55150642 A JP55150642 A JP 55150642A JP 15064280 A JP15064280 A JP 15064280A JP S5774702 A JPS5774702 A JP S5774702A
Authority
JP
Japan
Prior art keywords
fresnel lens
light beams
optical
cylindrical fresnel
lens
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.)
Pending
Application number
JP55150642A
Other languages
Japanese (ja)
Inventor
Kunihiko Hosaka
Jun Takai
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP55150642A priority Critical patent/JPS5774702A/en
Publication of JPS5774702A publication Critical patent/JPS5774702A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/30—Arrangements for concentrating solar-rays for solar heat collectors with lenses
    • F24S23/31—Arrangements for concentrating solar-rays for solar heat collectors with lenses having discontinuous faces, e.g. Fresnel lenses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

PURPOSE:To improve the condensation effect and transmission effect of a cylindrical Fresnel lens by making the nonoptical surface of a Fresnel element into an optical surface having a specific angle to incident light while considering the radius of curvature and the thickness of the cylindrical Fresnel lens. CONSTITUTION:When U1' and U2' are angles between emitted light beams and optical axes of the 1st surface 2 and 2nd surface 3 and N is refractivity, alpha obtained by tan<-1>(sinU2'-N.sinU1')/(cosU2'-N 1') is an angle between an optical surface 4 and a surface perpendicular to an optical axis. Above-mentioned Fresnel elements are formed corresponding to the each height h2 of light incidence to the 2nd surface 3 to focus all light beams, transmitted through the optical surface 4, on a focal-point position. Further, a surface 5 is so set that parallel light beams 13 are not reflected totally, thus transmitting all light beams 3 through the lens. Thus, a cylindrical Fresnel lens having superior focusing effect and transmission effect is obtained.
JP55150642A 1980-10-29 1980-10-29 Cylindrical fresnel lens and solar-ray collector Pending JPS5774702A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55150642A JPS5774702A (en) 1980-10-29 1980-10-29 Cylindrical fresnel lens and solar-ray collector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55150642A JPS5774702A (en) 1980-10-29 1980-10-29 Cylindrical fresnel lens and solar-ray collector

Publications (1)

Publication Number Publication Date
JPS5774702A true JPS5774702A (en) 1982-05-11

Family

ID=15501304

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55150642A Pending JPS5774702A (en) 1980-10-29 1980-10-29 Cylindrical fresnel lens and solar-ray collector

Country Status (1)

Country Link
JP (1) JPS5774702A (en)

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