EP 0354927 A4 19900926 - MACRO-GRADIENT OPTICAL DENSITY TRANSMISSIVE LIGHT CONCENTRATORS, LENSES AND COMPOUND LENSES OF LARGE GEOMETRY, AND FABRICATION THEREOF
Title (en)
MACRO-GRADIENT OPTICAL DENSITY TRANSMISSIVE LIGHT CONCENTRATORS, LENSES AND COMPOUND LENSES OF LARGE GEOMETRY, AND FABRICATION THEREOF
Publication
Application
Priority
- US 8759887 A 19870819
- US 20610988 A 19880617
- US 20611088 A 19880617
Abstract (en)
[origin: WO8901640A1] Gradient optical density transmissive light directing devices (20, 24, 26, 28, 30) and fabrication thereof are disclosed herein. Examples of such devices include concentrators, lenses and compound lenses. The present invention teaches a process for the fabrication of glass light transmitting devices having a chosen gradient in index of refraction either bidirectionally (radially and longitudinally relative to an optical axis) or in three dimensions. The present invention further describes the design of several interesting optical devices by particular choices of the gradient in the index of refraction thereof. Such articles have numerous uses in the optics, optical fiber and solar technology industries for the purposes of designing compound lens systems using a single, integral lens, coupling light into fibers and for concentrating and directing light from a source having a significant angular variation to energy collecting and/or conversion devices such as a photovoltaic cell, to name but a few applications.
IPC 1-7
IPC 8 full level
G02B 6/028 (2006.01); C03B 19/09 (2006.01); F24S 23/30 (2018.01); G02B 3/00 (2006.01); G02B 19/00 (2006.01)
CPC (source: EP)
C03B 19/09 (2013.01); F24S 23/30 (2018.04); G02B 3/0087 (2013.01); G02B 19/0014 (2013.01); G02B 19/0042 (2013.01); Y02E 10/40 (2013.01); Y02P 80/20 (2015.11)
Citation (search report)
See references of WO 8901640A1
Designated contracting state (EPC)
BE CH DE FR GB LI NL SE
DOCDB simple family (publication)
WO 8901640 A1 19890223; AU 2306888 A 19890309; CA 1305882 C 19920804; EP 0354927 A1 19900221; EP 0354927 A4 19900926; ES 2008565 A6 19890716; JP H01503576 A 19891130
DOCDB simple family (application)
US 8802714 W 19880809; AU 2306888 A 19880809; CA 574788 A 19880815; EP 88907902 A 19880809; ES 8802571 A 19880818; JP 50714888 A 19880809