697 results about "Primary mirror" patented technology

A composite mirror adapted for use as an outside rearview mirror of a motor vehicle includes a main or primary viewing mirror and an auxiliary blindzone viewing mirror juxtaposed to expose the vehicle blindzone to the vehicle operator. The main viewing mirror is generally of unit magnification. The auxiliary mirror is composed of a planar array of reflecting facets mimicking a convex mirror. The main and auxiliary mirrors can be combined in constant or variable reflectivity applications.

Disclosed is a system, method and circuit for mirroring data on a data server. According to some embodiments of the present invention, a primary mirroring module associated with a primary server may be adapted to establish data mirroring connections between the primary server and one or more mirror sever systems. According to some embodiments of the present invention, the primary mirroring module includes an evaluator unit which generates a delta file to be transmitted to the one or more mirror server systems.

The present invention is an improved solar concentrator array utilizing a monolithic array of primary mirrors fabricated from a single sheet of formable material. The material may include glass, plastic, and metal of a high thermal stability to be able to withstand a broad range of temperature conditions. The monolithic array of this invention may include integral alignment or attachment features for attachment to a supporting structure.

The present invention is primarily directed to improvements to cost-effective systems for concentrating and using solar energy. The present invention co-optimizes the frame and the primary mirrors and secondary concentrator for a cost-effective very high concentration quasi-parabolic dish system that uses no moulded optics for the primary concentration, and also optimizes fabrication jigs for the main components of that design. The present invention also optimizes cell contacts and provides cost effective receiver cooling for dense receiver arrays for very high concentration photovoltaic systems. The present invention also includes a semi-dense receiver array that can provide a higher acceptance angle than a dense receiver array, and finally includes mutual-shading impact minimization methods and apparatus compatible with very high concentration photovoltaic systems.

The invention relates to a spectral imaging method and a spectrum imaging instrument of a snapshot-type high throughput, which aim at realizing a picture-type photograph. The spectrum instrument comprises a linear gradient filter array and an optical-field imaging mechanism, and the optical-field imaging mechanism comprises a primary mirror, a micro lens array and a detector. The filter array is arranged on an aperture diaphragm between lenses of the primary mirror, the filter array consists of a plurality of filters which have identical width and are arranged at intervals, and the filter is a linear gradient filter band with continuous spectrum. The micro lens array is arranged on an imaging surface of a front-mounted optical imaging system, and the detector is arranged on a focus plane of the micro lens array. The spectrum imaging method is characterized in that light in different directions transmitted or reflected by a target is imaged on one micro lens after being modulated by the primary mirror and the filter array, the light is dispersed by the micro lens onto a picture element of the detector to form a subimage, and finally three-dimensional spectrum image data is obtained. The complete spectrum image information of the target can be obtained through the photograph in one step, and the spectral imaging method and the spectrum imaging instrument can be used for monitoring and tracking a rapid variable or movable target.

The invention provides a low-cost refracting-reflecting athermalizing medium wave infrared lens and aims at providing a low-cost refracting-reflecting optical lens which is small in aspherical mirror number, low in cost, made of a small amount of aspherical lenses and conventional silicon and germanium optical materials at a 3.7-4.8 [mu]m medium-wave infrared band and having the optical passive athermalizing performance. The technical scheme is that parallel light enters a main reflection spherical mirror (3) to form a converged light beam through a spherical cover (2) in an incidence mode, a convergence angle is decreased through a Mangin refracting-reflecting mirror (4), a primary mirror face (5) is formed by decreasing a part of aberration and increasing a part of balanced aberration and negative thermal difference of a lens to be arranged behind, the light beam is changed into divergent light, the divergent light enters a negative lens (6) made of an aspherical germanium material and a positive meniscus lens (7) made of a silicon material so as to reduce chromatic aberration and aberration, then converges through a positive convex lens (8) made of the silicon material, enters a detector window (9) and finally forms an image on a detector focal plane (11) through a cold light diaphragm (10), and the whole imaging process is finished.

A vehicular exterior rearview mirror system comprises a reflective element assembly, a base frame coupling the reflective element assembly to a vehicle, a support arm for coupling the reflective element assembly to the base frame, and a pivot connection for pivotally coupling the support arm to one of the base frame and the reflective element assembly. The pivot connection comprises a pedestal having at least two detent ribs, and an opening for receipt of the pedestal therethrough having at least two detent channels. Pivoting of one of the support arm relative to the base frame and the reflective element assembly relative to the support arm moves a first one of the at least two detent ribs out of a first one of the at least two detent channels and into a second one of the at least two detent channels.

A single-lens-reflex digital camera in which an optical image of an object that is to be photographed via a photographing lens is reflected by a main mirror to be formed on a focusing screen so that the optical image is viewed through a viewfinder while the main mirror is retracted from an optical path of the photographing lens to capture an image of the object by an image pickup device, the single-lens-reflex digital camera includes an electroluminescent display provided on the focusing screen, wherein the electroluminescent display displays at least the object image captured by the image pickup device. The single-lens-reflex digital camera is configured to allow the object image displayed by the electroluminescent display and the optical image formed on the focusing screen to be viewed through the viewfinder.

The invention relates to a high dynamic imaging module based on DMD dynamic beam splitting. The module includes DMD-based high dynamic imaging module hardware, optical path control software, and image fusion software. A target light enters a main mirror, is reflected by a dynamic beam splitting device, and then passes through an adapter, a light intensity dynamic adjustable mechanism, and a position sensor, images are acquired by cameras, and then the light passes through a DMD spatial light modulator and is transmitted to a computer for parameter calculation compensation, and the high dynamic range images can be obtained; the adapter can realize the dynamic adjustment of the splitting ratio area to the camera target surfaces according to different imaging tasks; a main lens+adapter+multi-camera optical path structure is formed through the combination with an image fusion and enhancement processing algorithm, the dynamic range provided by the optical path structure can reach 136dB, the whole dynamic range of the system is greater than 150dB, so that the high dynamic range imaging of the target can be realized. the compact and small beam splitting structure can be realized by a DMD device, so that the whole and sub-area dynamic beam splitting can be realized. The technical problem of simultaneous high-quality imaging of the rocket and flame of a target range can be solved.

An optoelectrical device, which may be a luminaire or a photovoltaic concentrator, has a transparent cover plate. A target with an optoelectrical transducer that produces waste heat in operation is mounted at an inside face of the transparent cover plate. A primary mirror reflects light between being concentrated on the target and passing generally collimated through the cover plate. A heat spreader is in thermal contact with the target. The heat spreader has heat conductors that thermally connect the target with the inside surface of the cover plate. The heat conductors may be arms extending radially outwards, and may be straight, zigzag, or branching. An array of targets may be mounted on a common cover plate, and their heat spreaders may be continuous from target to target.

A beam control system and method. In an illustrative embodiment, the inventive system (500) provides a first beam of electromagnetic energy (503); samples the first beam (503) and provides a second beam (505) in response thereto; detects aberrations in the second beam (505); and corrects aberrations in the first beam (503) in response to the detected aberrations. In a specific implementation, the invention (500) includes a beam director telescope (510) having a primary mirror (516) on which a holographic optical element (518) is disposed. The holographic optical element (518) samples the output high-power beam and provides a sampled beam to a wavefront sensor (520). The wavefront sensor (520) provides signals to an adaptive optics processor (580). The adaptive optics processor (580) analyzes the sampled wavefront, detects aberrations therein and provides a correction signal to an optical phased array (550). A master oscillator (552) provides a reference beam, which reads the optical phased array (550) and is back reflected off a front surface of an aperture sharing element (540). The resulting beamfront is conjugated by a first phase conjugate mirror (546) and then again by a second phase conjugate mirror (556). The output of the second phase conjugate mirror (556) is amplified and reflected off the front surface of the aperture sharing element (540). The aperture sharing element (540) outputs the high power beam via the telescope (510) which is corrected for the optical distortions in the telescope and beam path.

A novel high resolution large visual field optical imaging system is composed of a share primary mirror, a microlens array and a detector array. The share primary mirror is in a holocentric spherical mirror structure, and the center of the share primary mirror is a spherical mirror. Two meniscus lenses are wrapped on two sides of the share primary mirror, and incident rays respectively pass through the share primary mirror and the microlens array, and finally reach the detector array for imaging. Through the computed imaging technology, image restoration is carried out on every sub-image (eliminating impact of spherical difference on image quality), and all sub-images are subjected to registration recombination to obtain a complete clear image. The novel high resolution large visual field optical imaging system is simple in structural type, and the visual field can reach 180 degrees in theory. The full visual field has a uniform resolution ratio, and combines with the computed image post processing technology, the systematic resolution ratio can be close to a diffraction limit in theory. The novel high resolution large visual field optical imaging system has the advantages of having an extra large visual field, a high resolution ratio, and the like, and particularly suitable for researching and finding of space targets in a wide range, air monitoring for a stratosphere, and the like.

The invention discloses a method for adjusting a primary mirror optical axis to be perpendicularly to a horizontal axis by using a laser tracker and belongs to the technical field of optical installation and adjustment. The method is used for adjusting the primary mirror optical axis of a photoelectric device to be perpendicularly to the horizontal axis and comprises the steps of (1) erecting the laser tracker; (2) fixing two target balls of the laser tracker at different positions of the horizontal axis; (3) rotating the horizontal axis to drive target balls, and using the laser tracker to calibrating the horizontal axis; (4) moving target balls on a primary mirror, and using the laser tracker to calibrating the primary mirror optical axis; and (5) calculating the included angle formed by the primary mirror optical axis and the horizontal axis, and adjusting the primary mirror to incline, so that the primary mirror optical axis is perpendicularly to the horizontal axis. The method solves the problems that existing technologies are complex in tooling, miscellaneous in operation process and large in reference error and is simple to operate, safe and high in efficiency.

A foldable spectacle frame having two lens frames forming a plane, two temples which are foldable to a thin form in substantially the same plane as the lens frames without lapping over the lens frames. Each of the temples comprises an auxiliary temple member supported by a pivot provided at an outer portion of the lens frames and being movable about the pivot in an auxiliary plane of pivotal movement substantially orthogonal to the plane of the lens frames, and a main temple member pivoted to the auxiliary temple rotatably in a main plane of pivotal movement orthogonal to the auxiliary plane of pivotal movement of the auxiliary temple member. The spectacle frame further comprises a slide member slidably provided within the auxiliary temple and having a length permitting a base end thereof to project from the auxiliary temple member, and biasing means for biasing the slide member away from the pivot when folding the spectacle frame. The pivot includes engaging means for engaging the slide member with the pivot of the lens frames by cooperation of the slide member, the pivot, and the main temple member. The slide member will engage with the pivot when the main temple member is brought into an unfolded state, and will disengage from the pivot when the main temple member or the auxiliary temple member is folded.

The principle of a direct wave face conversion scanner for a direct sight synthetic aperture laser imaging radar emitting light beam is that a Mach-Zehnder polarized interferometer is adopted to divide an incident light beam into two cross-polarization separated space channels, each of the channel is internally provided with a track-along cylindrical mirror needed by phase quadratic term traversing and a track-crossing cylindrical mirror needed by phase line modulating, the track-crossing cylindrical mirror is provided with a scanning driver, and wave face conversion is performed on the light beam by combining the cylindrical mirrors of the two channels to generate two coaxial cross-polarization scanning emitting wave faces which are imaged to a target face by an emitting optical main mirror. The direct wave face conversion scanner for the direct sight synthetic aperture laser imaging radar emitting light beam has the advantages of simple and reliable structure, small size, small transmission loss, vibration resistance, realizing precise phase quadratic term by adopting a high-precision non-spherical optical element, and capability of changing the work mode and the running performance parameters of a radar by adopting the cylindrical mirrors with different focal lengths and different scanning directions without changing the whole structure.

The invention provides a telescopic truss type binary optical space camera and an on-orbit work method thereof and belongs to the field of spaceflight space repeatable unfolding. The telescopic truss type binary optical space camera aims to solve the problems that an existing space foldable and spreadable framework type supporting arm is complicated in structure, heavy and difficult to repeatedly fold and unfold. A partitioned type spreadable optical main lens of the telescopic truss type binary optical space camera is installed on a supporting arm through three ball hinges. The supporting arm comprises multiple framework type foldable units. The on-orbit work method comprises the steps that during launching, the supporting arm and the partitioned type spreadable optical main lens are in a folded mode, and the optical camera is in a launch closed mode; after injection, the supporting arm is switched to a unfolding mode and is unfolded; after the supporting arm is unfolded appropriately, the space camera is switched to an on-orbit operation mode, and the partitioned type spreadable optical main lens is unfolded; when the space camera is switched to an on-orbit closed mode, the supporting arm is folded, and the partitioned type spreadable optical main lens is unfolded. The telescopic truss type binary optical space camera is a large-caliber space camera.

An electronic image pickup apparatus comprises a photographic optical system; solid state image pickup devices disposed on a plant where a subject image formed by subject beams which have passed through the photographic optical system is formed; a main mirror disposed between the photographic optical system and the solid state image pickup devices, wherein a part of the main mirror is formed of a half mirror to divide the subject beams which have passed through the photographic optical system into an observing beam and a focus detecting beam; a sub-mirror for reflecting the subject beam which has passed through the part of the main mirror; a focus detecting optical system for forming an image of the subject beam reflected by the sub-mirror on a partial area of the solid image pickup devices; and an electrical circuit for outputting focus detecting information based on image signals of the partial areas of the solid image pickup devices. The structure provides an electronic image pickup apparatus which contributes to the down-sizing of the apparatus and to the reduction of production cost by eliminating an image pickup device which is dedicated for focus detection.

An all-day multifunctional telescope device capable of being both used for solar active region observation and night astronomical observation comprises an optical telescope system, a lightweight cellular main lens and temperature control system, a thermovision field diaphragm and temperature control system, a thermovision field diaphragm adjusting structure, an achromatic imaging system, a light filter, a rotating rack and a data processing and control system. According to the all-day multifunctional telescope device capable of being both used for solar active region observation and night astronomical observation, under the condition that cost and system complexity are not obviously increased, the effective observation time of the telescope device is changed to achieve daytime and night continuous observation from only daytime or night observation, the effective observation time is effectively prolonged, the observation efficiency is improved, important reference is provided for development of telescopes, in particular to development of large-diameter telescopes, and the innovativeness and practicability are achieved.

The invention discloses a laser flasher with big diameter for measuring the structure constant of atmospheric refractivity as well as the method for that. The laser flasher comprises two opposite-arranged reflecting telescopes and lasers on the lens cones. The incident lights reach to the secondary plane mirror after being reflected by a main parabolic mirror in the lens cones, pass the openings, attenuating pieces and narrow-band interference filters on the lens cones, and then are converged on a photoelectric detector. At transmission test, two arrangements are placed at the two ends of the transmission path; the emitting system at one end of the path gives out modulated laser signals, after being transmitted by a turbulent atmosphere, the light signals are collected by the telescope at anther end, and go through photoelectric conversion by the photoelectric multiplier near to the focus; then the electric signals enter into a built-in control system for demodulation, sampling, processing, saving and displaying. The invention is of high accuracy and improves the accuracy in the measurements.

A storage system with primary mirror shadow comprises a storage array, and a controller. The controller is capable of predefining storage array volumes as a primary volume that is subsequently paired with a secondary volume, emulating a primary logical device and a plurality of secondary logical devices including a shadow logical device, tracking volumes and logical devices using a pointer, and instantaneously evoking a volume copy by a pointer exchange.

A method for autonomously assembling a segmented filled aperture telescope (“AAST”) in space using modular components that are launched into orbit using multiple launches. In one embodiment, a plurality of interlocking modular mirror backing structure segments, with or without an edge truss, are introduced to a satellite. To this are coupled a plurality of modular segmented optics to form a primary concave mirror. In another embodiment, the mirror backing structure and modular optics segments are formed as a single modular unit, with a plurality of these units coupled together to form the primary concave mirror. The modular concept allows primary mirrors of virtually limitless size to be formed in space with or without using astronauts.

The invention relates to the technical field of optical tests, in particular to an external field type infrared radiometer. According to the infrared radiometer, a main convergence mirror is connected with a wave chopper; the wave chopper is connected with a standard reference black body source and light filters; the light filters are connected with neutral attenuation pieces; the neutral attenuation pieces are connected with optical spectrum correcting pieces; the optical spectrum correcting pieces are connected with an infrared detector; a signal acquisition part is connected with the infrared detector and the wave chopper respectively. Through the embodiment, a corresponding optical spectrum curve of a whole system in a measurement waveband can be enabled to be a flat curve through the optical spectrum correcting piece, the linearity and the measurement accuracy of the whole system are improved, and the influence of a radiation spectrum of a tested object on a measurement structure is avoided; the neutral light filters with different attenuation ratios are adopted and the dynamic range of equipment is expanded. Therefore, the equipment has a plurality of ranges and strong and weak radiation targets can be measured.