Solar powered lamp having a cover containing a fresnel lens structure

Patent · Tue Jul 20 00:00:00 EDT 1993

OSTI ID:7368925

Mitchell, K; Sitzema, Jr, R L

A solar powered lamp is described, comprising: a photovoltaic cell for receiving sunlight and generating electrical energy; an electrical storage device coupled to the photovoltaic cell, the photovoltaic cell transferring the electrical energy to the electrical storage device to illuminate a light source; and a cover having an optical axis, the cover disposed over and adjacent the photovoltaic cell, the cover having a smooth and continuous outer surface for receiving sunlight at an incident angle wherein a peripheral portion of the outer surface has a first plurality of exterior prismatic means configured to redirect the incoming radiation incident thereon onto a photodetector of the solar powered lamp and an inner surface which has a second plurality of interior prismatic means for bending incoming sunlight so that it forms an angle with the optical axis which is smaller than the incident angle.

• Assignee: Siemens Solar Industries, L.P., Camarillo, CA (United States)
• Patent Number(s): US 5228772; A
• Application Number: PPN: US 7-742990
• OSTI ID: 7368925
• Resource Relation: Patent File Date: 9 Aug 1991
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
14 SOLAR ENERGY
LIGHTING SYSTEMS
PHOTOVOLTAIC POWER SUPPLIES
ENERGY STORAGE SYSTEMS
FRESNEL LENS
PHOTOVOLTAIC CELLS
SOLAR CONCENTRATORS
DIRECT ENERGY CONVERTERS
ELECTRONIC EQUIPMENT
ENERGY SYSTEMS
EQUIPMENT
LENSES
PHOTOELECTRIC CELLS
POWER SUPPLIES
SOLAR EQUIPMENT
320106* - Energy Conservation
Consumption
& Utilization- Building Equipment- (1987-)
140600 - Solar Energy- Photovoltaic Power Systems