摘要:
An optical system for a solar energy device to produce electrical energy. The optical system includes an aplanatic optical imaging system, a non-imaging solar concentrator coupled to the aplanatic system and a multi-junction solar cell to receive highly concentrated light from the non-imaging solar concentrator.
摘要:
An apparatus is disclosed including: a trough shaped reflector extending along a longitudinal axis and including at least one reflective surface having a shape which substantially corresponds to an edge ray involute of the absorber.
摘要:
An apparatus is disclosed including: a trough shaped reflector extending along a longitudinal axis and including at least one reflective surface having a shape which substantially corresponds to an edge ray involute of the absorber.
摘要:
An apparatus for collecting solar energy includes a receptacle adapted for receiving solar thermal energy, an insert adapted for counter-flow located within the receptacle, and an absorption device positioned proximate to and substantially conforming to at least a portion of an internal surface of the receptacle and thermally coupled to the insert.
摘要:
An apparatus for collecting solar energy includes a receptacle adapted for receiving solar thermal energy; an insert located within the receptacle, the insert being a heat pipe adapted to transfer heat; and an absorption device positioned proximate to and substantially conforming to at least a portion of an internal surface of the receptacle and thermally coupled to the insert. The insert enters the receptacle substantially at a cross-sectional center of the receptacle, and further inside the receptacle, the insert shifts to become closer to the absorption fin.
摘要:
An optical device for collecting light and selectively outputting or concentrating the light. A layer has an optical index of referaction n1, and top, bottom and side surfaces defining an angel of inclination φ. A back surface spans the top, bottom and side surface. A first layer is coupled to the bottom surface of the layer and has an index of refraction n2. The first layer index n2 causes light input through the back surface of the layer to be preferentially output into the first layer. A second layer is coupled to the bottom of the first layer and selectively causes output of light into ambient. Additional layers, such as alight polarization layer, a polarization converting layer and a post LCD diffuser layer can be used to make preferential use of polarized light of diffuse light having passed through the LCD layer to enhance viewing of the output light.
摘要:
An optical device for collecting light and selectively outputting or concentrating the light. A layer has an optical index of refraction n1, and top, bottom and side surfaces defining an angel of inclination φ. A back surface spans the top, bottom and side surface. A first layer is coupled to the bottom surface of the layer and has an index of refraction n2. The first layer index n2 causes light input through the back surface of the layer to be preferentially output into the first layer. A second layer is coupled to the bottom of the first layer and selectively causes output of light into ambient. Additional layers, such as alight polarization layer, a polarization converting layer a and a post LCD diffuser layer can be used to make preferential use of polarized light of diffuse light having passed through the LCD layer to enhance viewing of the output light.
摘要:
An apparatus that includes a lens having a light entrance end forming a recess, a heat sink having an end portion facing the recess, and a light source positioned to transmit light via the recess into the lens. The light source is in thermal communication with the heat sink, which conducts away heat generated by the light source. The apparatus may be used to provide optical radiation at various wavelengths, activating tooth whitening material, and curing dental composite material.
摘要:
A nonimaging illumination optical device for producing a selected far field illuminance over an angular range. The optical device includes a light source 102, a light reflecting surface 108, and a family of light edge rays defined along a reference line 104 with the reflecting surface 108 defined in terms of the reference line 104 as a parametric function R(t) where t is a scalar parameter position and R(t)=k(t)+Du(t) where k(t) is a parameterization of the reference line 104, and D is a distance from a point on the reference line 104 to the reflection surface 108 along the desired edge ray through the point.
摘要:
A nonimaging solar collector. A method and article of manufacture of a solar collector includes an outer housing transparent to light, a reflector element positioned within the outer housing, an absorber concentrically disposed relative to the outer housing, and a heat conduction fin coupled to the absorber and having a wedge shape which tapers to a smaller thickness as a function of increasing radial separation from the absorber.