9 results about "Hot mirror" patented technology

The invention discloses an in-orbit calibration method for correcting self-radiation of a heat mirror of a microwave imager based on reference radiation. The method comprises the following steps: calculating an included angle between the heat mirror of the microwave imager and the sun; calculating the earth observation brightness temperature of the microwave imager; calculating the observed brightness temperature of the reference microwave radiometer; simulation brightness temperature of the reference microwave radiometer and the microwave imager is obtained based on radiation transmission model simulation; calculating an observation brightness temperature deviation and a simulation brightness temperature deviation, and calculating a system error between the reference microwave radiometer and the microwave imager; based on the system error, the included angle between the microwave imager heat mirror and the sun is adopted for function relation fitting, and the heat mirror self-radiation brightness temperature of the reference microwave radiometer is calculated; the included angle between the microwave imager heat mirror and the sun is calculated on orbit in real time, and the earth observation brightness temperature of the microwave imager is corrected based on the self-radiation brightness temperature of the heat mirror. The self-radiation of the heat mirror is solved in real time by taking double deviations of observation brightness temperature and simulation brightness temperature as constraints, and the problem that the temperature of the heat mirror of the microwave imager cannot be actually measured in orbit is solved.

A reflective waveguide includes a substrate comprising a plurality of partially-reflective prisms and an input hot mirror disposed at one or more partially-reflective prisms of the substrate. The input hot mirror is reflective to infrared light and substantially transmissive to visible light and is configured to incouple infrared light into the reflective waveguide. The substrate further comprises an incoupler configured to incouple display light into the reflective waveguide, an outcoupler comprising a first subset of the plurality of partially-reflective prisms and configured to outcouple the display light from the reflective waveguide, and an exit pupil expander comprising a second subset of the plurality of partially-reflective prisms and configured to guide the display light from the incoupler to the outcoupler.

The invention discloses a remote sensing instrument data on-orbit anomaly detection and correction method, system and equipment. The method comprises the following steps: training a neural network by using historical normalized hot mirror temperature time sequence data to obtain an initial network model capable of predicting hot mirror temperature data; dividing the new hot mirror temperature time sequence data into two segments according to a preset rule, and predicting the first segment of hot mirror temperature time sequence data by using the initial network model to obtain a first segment of predicted temperature; combining the hot mirror temperature historical time sequence data with the first section of hot mirror temperature time sequence data to obtain a new training set, and performing fine adjustment on the initial network model parameters by using the new training set to update the network model; using the updated network model to predict the second segment of hot mirror temperature time sequence data to obtain a second segment of predicted temperature; and combining the first section of predicted temperature and the second section of predicted temperature into predicted heat mirror temperature, comparing the predicted heat mirror temperature with new heat mirror temperature sequence data, identifying abnormal data in the new heat mirror temperature sequence, and correcting the abnormal data.

To provide a head-up display device capable of suppressing the generation of stray light.SOLUTION: A head-up display device 100 comprises: a display surface 11a emitting display light L and inclined non-orthogonal to an optical axis center of the display light L extending in a Z-direction; one reflection mirror 30 reflecting the display light L emitted from the display surface 11a toward a windshield; a tabular hot mirror 50 positioned in an optical travelling direction of the display light L from the display surface 11a, reflecting infrared, transmitting the display light L, and inclined non-orthogonal to the Z-direction. The hot mirror 50 includes a plurality of side end faces. A side end face 51 closest to the display surface 11a, of the plurality of side end faces, is formed with a regular reflection suppression structure 55 for reducing regular reflectance in comparison with other side end faces.SELECTED DRAWING: Figure 2

The present application relates to the field of astronomical, space science and solar observation coronagraph instrument, especially relates to a kind of external mask type image stabilization coronagraph, it includes in turn: external mask, heat rejection mirror, objective lens group, field stop, field lens, Lyot diaphragm, image converter group and linear polarizer, it further includes: image stabilization device, the image stabilization device includes: image stabilization lens group, guide mirror and image stabilization lens adjusting mechanism, wherein, the image stabilization lens group is located between objective lens group and field stop;The guide mirror is set to the incident light path direction parallel to external mask outside external mask, for collecting solar azimuth and solar elevation angle optical signal, obtains solar pointing deviation signal;The image stabilization lens adjusting mechanism is based on solar pointing deviation signal, adjusts the pose of image stabilization lens group, to compensate solar pointing deviation.The present application combines high-precision imaging and image stabilization technology organically, significantly improves the observation performance of coronagraph, provides reliable technical support for the research of solar activity and coronal structure.

The disclosure provides a large-energy disc laser thermal lens effect control system, comprising: a pump beam shaping system for outputting shaped pump laser; a disc crystal for generating large-energy laser under the excitation of the pump beam shaping system; a first detector for detecting the thermal distribution of the front surface of the disc crystal; a second detector for detecting the temperature change of the side surface of the disc crystal and / or the height change of the thermal expansion of the disc crystal and the thermal distribution of the side surface; wherein the first detector and the second detector are colloidal quantum dot mercury telluride infrared detectors, the first detector and the second detector are respectively connected with a control system, the control system adaptively regulates and controls the pump laser output by the pump beam shaping system based on the detection results of the first detector and the second detector, so as to control the thermal lens effect of the disc crystal, and further improve the optical performance of the large-energy disc laser.

A head-up display is proposed comprising an image generation device configured to generate a light beam (3) and an optical system separate from the image generation device, located at a distance from it, and configured to receive and transmit the light beam to a partially transparent plate. The image generation device comprises a light source configured to generate the light beam, a variable transmittance element array (10) configured to selectively receive and transmit the light beam, and a hot mirror (12) and a polarizer (13) placed in the optical path of the light beam downstream of the variable transmittance element array relative to the direction of propagation of the light beam, the hot mirror being placed upstream of the polarizer in the optical path. Figure for the abstract: Fig. 2

The application discloses a kind of installation methods of heat mirror hollow glass spacing strip, belong to building energy-saving glass manufacturing technical field;The method is automatically cut into cross shape and the root of four corners is treated with round chamfer to four intelligent control clamps respectively clamp four edges of functional film, automatically adjust clamping force to make functional film in flat state;With the base assembly congruent convex head assembly is accurately aligned, with constant speed, functional film is vertically pressed into base recess, clamping force is adjusted in real time during process to maintain constant tension of functional film;Subsequently, fill molecular sieve in the cavity of the head assembly, and block the opening with the adhesive tape with barb;Bond top layer glass and inject structural sealant around the edge, get finished product after standard curing;The application fundamentally solves the problems of traditional process, such as easy wrinkling, easy deviation and uneven tension of functional film, realizes the standardized and modular production of heat mirror hollow glass, and improves the energy-saving performance and long-term durability of the product.

Proposed is a head-up display comprising an image-generating device configured to generate a light beam (3) and an optical system that is distinct from the image-generating device, that is located at a distance therefrom and that is configured to receive and transmit the light beam from / to a partially transparent plate, the image-generating device comprising a light source configured to generate the light beam, an array (10) of elements of variable transmittance that is configured to selectively receive and transmit the light beam, and a hot mirror (12) and polariser (13) placed on the optical path of the light beam downstream of the array of elements of variable transmittance relative to the direction of propagation of the light beam, the hot mirror being placed upstream of the polariser on the optical path.