JPS57144502A - Composite fresnel condenser - Google Patents

Composite fresnel condenser

Info

Publication number
JPS57144502A
JPS57144502A JP3007581A JP3007581A JPS57144502A JP S57144502 A JPS57144502 A JP S57144502A JP 3007581 A JP3007581 A JP 3007581A JP 3007581 A JP3007581 A JP 3007581A JP S57144502 A JPS57144502 A JP S57144502A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
condenser
composite fresnel
surface
fresnel
fresnel condenser
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
JP3007581A
Inventor
Akira Nadaguchi
Original Assignee
Nadaguchi Akihiko
Akira Nadaguchi
Nadaguchi Mikio
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

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B3/00Simple or compound lenses
    • G02B3/02Simple or compound lenses with non-spherical faces
    • G02B3/08Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens

Abstract

PURPOSE:To easily produce a thin and inexpensive composite Fresnel condenser which is formed on a single surface from plural Fresnel surfaces, by decreasing the focal distance as the zone surface goes farther away from the optical axis and therefore obtaining a uniform distribution of the condensing density. CONSTITUTION:The focal distance is decreased as the zone surface goes farther away from the optical axis for a composite Fresnel condenser which is formed on a single surface from plural Fresnel surfaces. As a result, the distribution of the condensing density becomes uniform on the light receiving surface KK. In such way, a thin and inexpensive composite Fresnel condenser is obtained in a simple way of production.
JP3007581A 1981-03-02 1981-03-02 Composite fresnel condenser Granted JPS57144502A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3007581A JPS57144502A (en) 1981-03-02 1981-03-02 Composite fresnel condenser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3007581A JPS57144502A (en) 1981-03-02 1981-03-02 Composite fresnel condenser

Publications (1)

Publication Number Publication Date
JPS57144502A true true JPS57144502A (en) 1982-09-07

Family

ID=12293672

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3007581A Granted JPS57144502A (en) 1981-03-02 1981-03-02 Composite fresnel condenser

Country Status (1)

Country Link
JP (1) JPS57144502A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4775229A (en) * 1985-02-22 1988-10-04 Nippon Kogaku K. K. Fresnel lens in a finder optical system
EP0772077A3 (en) * 1995-10-30 1998-06-10 Sony Corporation Projection-type display device
US6084670A (en) * 1997-03-11 2000-07-04 Nihon Kohden Corporation Particle analyzer and composite lens formed by integrally joining plural lens elements of different focal points
US6462891B1 (en) * 2000-04-20 2002-10-08 Raytheon Company Shaping optic for diode light sheets
EP1521044A2 (en) * 2003-09-24 2005-04-06 C.R.F. Societa' Consortile per Azioni Multifocal light concentrator for a device for the conversion of radiation, and in particular for the conversion of solar radiation into electrical, thermal or chemical energy
JP2008523593A (en) * 2003-12-11 2008-07-03 ワールド エナジー ソリューションズ ピーティーワイ リミテッド Solar energy collection system
WO2008152157A1 (en) * 2007-06-12 2008-12-18 Concentración Solar La Mancha, S.L. Refractive optical system for collecting and concentrating solar energy
WO2011005486A3 (en) * 2009-06-22 2012-01-19 Solarmation, Inc. Optics for concentrated photovoltaic cell

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4775229A (en) * 1985-02-22 1988-10-04 Nippon Kogaku K. K. Fresnel lens in a finder optical system
EP0772077A3 (en) * 1995-10-30 1998-06-10 Sony Corporation Projection-type display device
US6084670A (en) * 1997-03-11 2000-07-04 Nihon Kohden Corporation Particle analyzer and composite lens formed by integrally joining plural lens elements of different focal points
US6157500A (en) * 1997-03-11 2000-12-05 Nihon Kohden Corporation Particle analyzer and composite lens formed by integrally joining plural lens elements of different focal points
US6409141B1 (en) 1997-03-11 2002-06-25 Nihon Kohden Corporation Particle analyzer and composite lens formed by integrally joining plural lens elements of different focal points
US6462891B1 (en) * 2000-04-20 2002-10-08 Raytheon Company Shaping optic for diode light sheets
US7952017B2 (en) 2003-09-24 2011-05-31 Crf Societa Consortile Per Azioni Multifocal light concentrator for a device for the conversion of radiation, and in particular for the conversion of solar radiation into electrical, thermal or chemical energy
EP1521044A2 (en) * 2003-09-24 2005-04-06 C.R.F. Societa' Consortile per Azioni Multifocal light concentrator for a device for the conversion of radiation, and in particular for the conversion of solar radiation into electrical, thermal or chemical energy
EP1521044A3 (en) * 2003-09-24 2008-07-02 C.R.F. Societa' Consortile per Azioni Multifocal light concentrator for a device for the conversion of radiation, and in particular for the conversion of solar radiation into electrical, thermal or chemical energy
JP2008523593A (en) * 2003-12-11 2008-07-03 ワールド エナジー ソリューションズ ピーティーワイ リミテッド Solar energy collection system
WO2008152157A1 (en) * 2007-06-12 2008-12-18 Concentración Solar La Mancha, S.L. Refractive optical system for collecting and concentrating solar energy
WO2008152176A2 (en) * 2007-06-12 2008-12-18 Concentración Solar La Mancha, S.L. Optical system for capture and concentration of solar energy
WO2008152176A3 (en) * 2007-06-12 2009-03-26 Concentracion Solar La Mancha Optical system for capture and concentration of solar energy
WO2011005486A3 (en) * 2009-06-22 2012-01-19 Solarmation, Inc. Optics for concentrated photovoltaic cell

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