30 results about "Nonimaging optics" patented technology

A transceiver having a light source die, a photodetector die and a substrate is disclosed. The substrate has a first well in which the light source die is mounted and a second well in which the photodetector die is mounted. The substrate has a reflective surface which blocks light leaving the light source from reaching the photodetector unless the light is reflected by an object external to the transceiver. The reflecting surface of the second well in the substrate is shaped to concentrate light received from outside the transceiver onto the photodetector, and in one aspect of the invention it comprises a non-imaging optical element. The light source is powered by applying a potential between first and second contacts on the light source die. A signal is generated between first and second contacts on the photodetector die in response to illumination of the photodetector die.

A hybrid optical component that collects and concentrates incident light. The hybrid component includes both refractive and reflective elements. In preferred embodiments, refractive and reflective components focus rays on a common focal plane generally located at the bottom of the reflector where they are absorbed by a device such as a photovoltaic (solar) cell. Additionally, the optical component combines both imaging and non-imaging optical elements into a single device, for improved overall performance.

LED “Chip-on-Board” (COB) metal core printed circuit board (PCB) technology operates in conjunction with high efficiency compact imaging and non-imaging optics to provide a compact emergency light offering high performance luminance levels (higher brightness) and enhanced life, at low cost. Thermal impedance between the LED junction and the heat sink is significantly reduced for COB technology by placing the LED die directly on a high thermal conductivity material substrate thereby increasing temperature dependant life and thermally dependant output power. Additionally, there is no encapsulant or domed optic over the LED thus making it possible to get a much more compact and efficient substantially Etendue preserving collection optic directly over the die.

A portable luminaire includes an optical module, a power source and a housing. The optical module has at least one light emitting diode (LED) that emits light with a wide divergence, a non-imaging optical element and a transparent window. The non-imaging optical element (NIO) has a refractive member located around a LED optical axis and a total internal reflection member located around the refractive member. The refractive member and the total internal reflection member are integrated in a single transparent element having a mutual focal point. The NIO element collects a significant amount of light emitted by the LED with wide divergence located at the focal point to compress the collected light with high efficiency into a required pattern with a generally different angular distribution in a horizontal plane and a vertical plane, and to direct the compressed light outside of the luminaire.

A touch-sensitive apparatus operates by light frustration and comprises a light transmissive panel with a front surface and a rear surface. Light emitters and light detectors optically face the rear surface along a perimeter of a touch-sensitive region on the panel. At least one non-imaging, diffusively transmitting optical element is arranged on the rear surface along the perimeter of the touch-sensitive region. The light emitters are arranged to emit a respective beam of light onto the non-imaging optical element so as to generate, by diffuse transmission, propagating light that propagates by total internal reflection inside the panel across the touch-sensitive region, and the light detectors are arranged to receive detection light generated, by diffuse transmission, as the propagating light impinges on the non-imaging optical element, so as to define a grid of propagation paths across the touch-sensitive region between pairs of light emitters and light detectors.

The invention provides a long-distance wide-spectrum weak signal collection system based on a large-aperture Fresnel lens, including a large-aperture Fresnel lens and a rear group system of the large-aperture Fresnel lens, and the large-aperture Fresnel lens The rear group system includes a non-imaging optical element rear group and an imaging optical element rear group; the non-imaging optical element rear group includes a uniform light rod and a total reflection collimator; the imaging optical element rear group includes a relay lens group; The large-aperture Fresnel lens, uniform light rod, total reflection collimator and relay lens group are sequentially arranged along the optical path. The present invention adopts large-aperture Fresnel lens to replace ordinary lens array, which effectively reduces the weight and manufacturing cost of the lens, and has a simple structure and is easy to assemble and adjust; the rear group system of the large-aperture Fresnel lens adopts a mixture of imaging optics and non-imaging optics The design effectively overcomes the shortcomings of the large aberration of the large-aperture Fresnel lens, reduces the diameter of the converging spot, and improves the energy collection rate.

A scanning optical range finder in a mobile robot includes an optical transmitter circuit, a non-imaging optical element, an optical detector circuit, and a distance measurement circuit. The non-imaging optical element is arranged to receive an optical signal at the entrance aperture of the non-imaging optical element in response to operation of the optical transmitter circuit, and to direct the optical signal to an optical signal of the non-imaging optical element. output hole. The optical detector circuit is configured to receive the optical signal from an output aperture of the non-imaging optical element, and based on a respective phase difference of the optical signal relative to a corresponding output of the optical transmitter circuit, to generate a detection signal. The distance measuring circuit is configured to calculate the distance of the target from the phase difference indicated by the detection signal. Related apparatus and methods of operation are also discussed.

The invention relates to a photovoltaic optical collector based on nonimaging optics, belonging to a photovoltaic optical collector and solving the problems of high cost and low optical collection magnification in the optical collector with lower optical collection magnification in the prior art. The photovoltaic optical collector comprises an optical collector and a solar battery, wherein the optical collector comprises a main lens and a secondary lens, the upper surface of the main lens is a plane, the lower surface of the main lens is divided into two parts, one part is TIR region Fresnel teeth and the other part is an RR region, one side of the TIR region Fresnel teeth is provided with a refraction surface and the other side is provided with a total internal reflection surface, an included angle of the refraction surface and a z axis is Phi, and the refractive index of materials made into the main lens and the secondary lens are both n. The optical collector can reach about 1000 times of optical collection magnification, and has height to width aspect ratio of less than 0.5, optical collecting angle of more than 1 degree and optical efficiency of more than 80 percent. The invention is suitable for occasions and fields of photovoltaic optical collectors with higher optical collection magnification.

The invention discloses a method for shaping circular beams into ring beams, relates to the field of nonimaging optics, and aims solve the problem of energy loss caused by optical antennas. The method for shaping the circular beams into the ring beams includes steps of 1), determining each parameter of beams emitted by a laser; 2), establishing a coordinate system; 3), establishing one-to-one corresponding relation according to ray traces; 4), calculating deflections of the rays; 5), determining a radial phase distribution formula of an optical shaping component; 6), determining radial profiles of the optical shaping component; 7), determining a radial phase distribution formula of an optical phase correcting component; 8), determining radial profiles of the optical phase correcting component. The method for shaping the circular beams into the ring beams is applicable to the field of optics.