95 results about "Optical quality" patented technology

An electroactive lens with raised resistive bridges is disclosed. The resistive bridges can connect many ring electrodes in an electroactive lens with a relatively small number of bus lines. These resistors are typically large to prevent excessive current consumption. Typically, they are placed in the same plane as the ring electrodes, which means that the ring electrodes are further apart or made discontinuous to accommodate the resistors. But further separating the ring electrodes or making them discontinuous degrades the optical quality of the lens. Placing the ring electrodes and resistors on layers separated by an insulator allows the ring electrodes to be closer together and continuous and have a high enough resistance to limit current consumption. It also relaxes the constraints on feature size and placement during processing to make the lens. And because the resistors and electrodes are on different planes, they can be formed of materials with different resistivities.

The invention discloses a method for preparing YAG transparent ceramic by two-step sintering, which comprises the following steps: 1) weighing yttrium oxide powder and aluminum oxide powder according to a stoichiometric ratio, mixing, and carrying out solid-phase reaction to synthesize YAG powder; 2) performing dry grinding and wet grinding on the obtained YAG powder to obtain mixed slurry; 3) drying the obtained mixed slurry to obtain powder, and performing compression molding and cold isostatic pressing to obtain a ceramic biscuit; and 4) pre-sintering the obtained ceramic biscuit in an oxygen-containing atmosphere, embedding the pre-sintered ceramic with oxide particles, and carrying out hot isostatic pressing sintering to prepare the YAG transparent ceramic. On the basis of obtaining the YAG transparent ceramic with high optical quality, a microstructure with a fine grain size can be obtained, and good mechanical properties are considered; the preparation method is simple, the equipment cost and energy consumption are low, the traditional annealing step can be omitted, and a new thought can be provided for preparation of the high-performance YAG transparent ceramic.

This invention belongs to the field of optical glass manufacturing technology. It provides a dynamic optimization control method for furnace parameters in continuous melting of optical glass, comprising: analyzing the mapping relationship between kiln pressure and spurious liquid level responses based on historical and step test data, determining dynamic critical thresholds for each operating condition, and constructing a decoupling discrimination criterion library. Secondly, monitoring kiln pressure and liquid level, when exceeding the threshold, using multi-source sensors and time-series correlation analysis, distinguishing between spurious and real fluctuations, and outputting the true liquid level change. Then, analyzing the mapping law between liquid level deviation and adjustment parameters, forming a matching rule library of operating conditions, liquid level ranges, and adjustment strategies. Finally, constructing a coupled model of adjustment amount and liquid level change based on random forest, inputting the true liquid level change, and outputting the target value of the adjustment parameter. This invention achieves accurate online distinction between spurious and real fluctuations, avoids erroneous adjustments during material feeding, and improves liquid level control accuracy and product optical quality.

The utility model discloses high-precision transfer printing mould pressing equipment for an optical lens, which belongs to the technical field of optical lens processing and comprises a base, an upper mould is slidably connected to the upper surface of the base, a workbench is fixedly connected to the upper surface of the base, and a control console is fixedly connected to the lower end of the right side of the base. The upper end of the rear side of the base is fixedly connected with a motor; the output end of the motor is fixedly connected with a rotating shaft, the rotating shaft is rotationally arranged in the upper mold, and the front side of the upper end of the base is fixedly connected with a fixing plate; a limiting rod is fixedly connected into the fixing plate, and the limiting rod is connected with a connecting rod in a sliding and penetrating mode. According to the high-precision transfer printing mold pressing equipment for the optical lens, through arrangement of the sweeping strip and the moving plate, residues of chippings on the surface of the workbench are reduced, the purity and optical quality of the lens are guaranteed, the yield of products is improved, abrasion of the chippings to the equipment is reduced, the service life of a mold is prolonged, and the maintenance cost and downtime of the equipment are reduced.

Methods and systems for measuring the optical quality of an eye based on laser ray tracing are provided herein. Generally, the method uses the steps of temporally detecting the human eye with one or more laser beams in a set of points within the pupil of the eye, detecting projections of the laser beams reflected and scattered from the retina, and processing an image of the detected laser spots. In one embodiment, the components of the system include, but are not limited to, a laser having a dual-axis acousto-optic deflector and a dual-output generator of a digitally synthesized sinusoidal voltage, a collimating optical system, a conjugate telescope system, a polarizing beam splitter, and first and second photosensitive detectors, each component being in operable communication with a processing unit. Another embodiment uses a multi-laser block that does not require laser beam scanning.

In an aspect of the present invention, a new active optic is provided, namely, a photo-magnetically actuated deformable mirror (PMADM) made of a magnetic composite structure and an optical quality substrate layer. The magnetic layer is composed of Polydimethylsiloxane (PDMS) and powdered ferromagnetic CrO2. A magnet may be used to deform the mirror surface. The powdered CrO2 has a low Curie temperature (preferably around 395 K) which allows changing the magnetization of the magnetic layer using a laser heating source, thus providing control over the deformation. In one embodiment, the structure has an overall dimension of 1.2 inch 1.2 inch 175 μm with an optical pupil diameter of 8 mm. The PMADM is estimated to deform to a maximum stroke of 8.7731 μm before failure with a 3 safety factor.

This invention relates to a method for characterizing an optical lens, the method comprising the steps of: measuring the optical transfer function (OTF) of an optical objective lens for at least one of the following illumination types: green light, blue light, and red light; and, for at least one of the illumination types: comparing the measured OTF with at least one predetermined threshold OTF to determine whether the optical quality of the lens is satisfactory. The invention also relates to a system for implementing this characterization method for characterizing optical objectives, and a method and system for manufacturing optical objectives for implementing this characterization method and system.

The application discloses a two-dimensional material growth method based on countercurrent non-metal source supply, and belongs to the technical field of two-dimensional materials. In the preparation, a non-metal source is placed in a single-port quartz test tube and arranged downstream of a tube furnace by using countercurrent supply of a chemical vapor deposition system. After the non-metal source is gasified at high temperature, the non-metal source is diffused to the surface of a substrate by using a concentration gradient, and the flow rate of a carrier gas can be regulated to regulate the non-metal source gas phase concentration on the surface of the substrate. Compared with a conventional chemical vapor deposition method, the method solves the problems of surface "deactivation" of a metal source and substrate pollution caused by diffusion of the non-metal source to the metal source and the substrate before the growth process. The preparation method provided by the application has strong controllability, the morphology, domain size and optical quality of the obtained two-dimensional transition metal chalcogenide are uniform, and the two-dimensional transition metal chalcogenide has excellent optical and electrical properties and wide application prospect.

The invention provides an SLM metal 3D printing liftable field lens adjusting device which comprises a box body, a linear guide rail sliding table is arranged on the box body, the linear guide rail sliding table is connected with a galvanometer support through a lifting adjusting assembly, a galvanometer is fixed to the galvanometer support, and a field lens is arranged at the bottom of the galvanometer. When the laser focus is adjusted, the first hand wheel part is rotated to drive the first lifting lead screw and the second sliding seat to be in engaged transmission, so that the second sliding seat and the first sliding seat slide in a lifting manner along the guide of the linear guide rail, the lifting of the galvanometer and the lifting of the field lens arranged at the bottom of the galvanometer are adjusted, and the laser focus is accurately and reliably adjusted; and finally, the first locking device is used for limiting, beam expanding devices are reduced, the cost is reduced, and the optical quality is stable and reliable.

This invention provides an optical lens assembly, comprising, from a first side to a second side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens sequentially along the optical axis. The first side is the light-emitting side, and the second side is the light-receiving side. The optical lens assembly is used for projection, and multiple imaging rays pass sequentially through the sixth, fifth, fourth, third, second, and first lenses from the second side, generating multiple imaging rays that exit from the first side. The first lens has a negative refractive index, and the optical axis region of the first side of the first lens is concave. The second, third, and fourth lenses all have positive refractive indices. The optical lens assembly contains only the aforementioned first to sixth lenses. This optical lens assembly has the advantages of small size, large field of view, good thermal stability, and the ability to maintain good optical quality even when allowing light of different wavelengths to pass through.

A method for simulating the effects of the optical quality of windshield onto the image recording quality of a digital image recording device, in particular a digital image recording device for an advanced or automated driver-assistance system. The method is based on a combination of an adapted stochastic ray tracing method and of an adapted machine learning method to simulate the effects of the optical distortions of a windshield on the image recording quality of a digital image recording device. The simulation is performed from a measured optical quality function of the windshields related to those optical distortions.

A projection lens includes a first optical lens group and a second optical lens group. The first optical lens group transmits an image beam to the second optical lens group. The second optical lens group projects the image beam out of the projection lens. The second optical lens group includes first and second reflective elements and an optical component. The optical component is disposed between the first and second reflective elements. The optical component includes a light-transmitting area and a reflective area. The first reflective element reflects the image beam from the first optical lens group and transmits it to the light-transmitting area. The light-transmitting area allows the image beam from the first reflective element to pass through and be transmitted to the second reflective element. The second reflective element reflects the image beam from the light-transmitting area and transmits it to the reflective area. The reflective area reflects the image beam from the second reflective element. A projection device equipped with the projection lens is also provided. The projection lens and projection device of the present invention have a foldable optical path to reduce the size of the projection lens, simplifying the manufacturing difficulty of the projection lens while maintaining good optical quality.

This invention provides a diazobiphenyl dye for thin-film polarizers, which is an analog of AD1. Thin-film polarizers prepared using this dye exhibit good optical quality, such as low light scattering, high dichroism ratio, broadband absorption, and / or stability to heat and light irradiation. This invention also provides a method for preparing the diazobiphenyl dye from two different monoazo dyes via a cross-coupling reaction. This method is eco-friendly because it does not use toxic benzidine as a raw material. The product (diazobiphenyl dye) obtained by this method can be purified in a simple and convenient manner, and the diazobiphenyl dye prepared by this method can have a symmetrical or asymmetrical structure. Furthermore, this invention provides a thin-film polarizer comprising the diazobiphenyl dye and an apparatus for display applications comprising the thin-film polarizer.

An imaging optical system, camera module, and electronic device are disclosed. The imaging optical system sequentially includes an infrared light-absorbing element, an infrared light-reducing film, and a flat panel element along a central optical path. The infrared light-absorbing element is an infrared light-absorbing plastic element used to refract light. The infrared light-reducing film is positioned closer to an imaging surface of the imaging optical system than an incident surface of the infrared light-absorbing element. The flat panel element is integrally formed and disposed between the infrared light-reducing film and the imaging surface. The flat panel element includes a light-transmitting portion and a support portion, wherein the light-transmitting portion is correspondingly disposed to the imaging surface, and the support portion surrounds the light-transmitting portion, keeping the light-transmitting portion at a specific position on the central optical path. This improves optical quality.

Described are polymerizable high energy light absorbing compounds. The compounds absorb various wavelengths of ultraviolet and / or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices. Such devices exhibit a number of desirable properties, including providing wearers with favorable optical quality.

To provide a frame bonding structure for a video display panel and a protective cover plate, which prevents optical interference (Newton's rings) and lamination deformation caused by air pressure differences in the internal space when the video display panel and the protective cover plate are bonded to a frame, and can suppress deterioration of visibility and contamination. [Solution] A square-shaped double-sided tape 2 is interposed between an electronic display module 1 and a protective cover plate 3, and the four peripheries are fixed with adhesive. The frame strip 21 of the square-shaped double-sided tape 2 has an air passage 22 that penetrates both the inside and outside of the module. The air passage has an inner diameter of 0.5 mm or less and further includes at least one bend. This automatically balances the internal and external air pressures, preventing optical interference, and the bend in the air passage prevents moisture and dust from entering from the outside, preventing contamination of the image display panel 1A. This structure allows for easy lamination, a high yield, and a display module with excellent optical quality and environmental resistance.

The application discloses a cutting device for edge-shaped resin spectacle lenses and a cutting method thereof, comprising an edge grinding machine, the edge grinding machine is provided with a cutting tool for cutting the edge of the resin lens, the edge structure of the cutting tool is matched with the edge structure of the resin lens, and the mounting interface of the cutting tool is consistent with the tool interface of the edge grinding machine; the application directly uses the traditional lens edge grinding machine, does not need to purchase expensive five-axis numerical control equipment, and can seamlessly integrate the optical parameter setting function of the original equipment, thereby guaranteeing the optical quality and reducing the equipment investment and tool wear cost; by replacing different special forming tools, various personalized and customized special-shaped edge requirements, including steps, sharp edges, grooves, inclined surfaces and combinations thereof, can be flexibly coped with.

The application provides a door and window processing parameter optimization method and system, relates to the door and window processing field, and obtains door and window parameters and external environment information, establishes a door and window simulation model according to the door and window parameters, converts the external environment information into physical load parameters, then performs accelerated simulation operation on the door and window simulation model based on the physical load parameters, obtains door and window performance evaluation results, and finally generates door and window design optimization information according to the evaluation results, and simulates the long-term performance of the door and window within a preset time period by applying multiple frequency load cycles. Through the technical scheme, the application can effectively solve the problem that the existing technology lacks accurate prediction and evaluation capability for the small local deformation of the super-large size and slender profile door and window under the long-term complex environment and the cumulative influence of the small local deformation on the long-term reliability and optical quality of the door and window, and avoids the performance attenuation and quality problems that may occur in the actual application of the traditional method.

The present application relates to a kind of based on hyperspectral reconstruction sunglasses lens color classification method and system. It is related to optical quality inspection and spectral detection technical field, the method first constructs controlled reflection imaging light path, collects lens reflection image and extracts effective ROI area;Again, RGB image is converted to YCrCb space to realize luminance chroma decoupling, by YCrCb-MST multi-stage spectral Transformer network, RGB image is reconstructed as 400-700nm, 31 channel hyperspectral data;Finally, color classification is completed by particle swarm optimization extreme learning machine, and the category and confidence are output.The system is composed of imaging acquisition, hyperspectral reconstruction, spectral classification and man-machine interaction unit, can inhibit ambient light and brightness interference, accurately identify subtle color difference, detect fast, low cost, adapt to production line online detection, can realize color difference traceability and whole-process data traceability, suitable for sunglasses lens high-precision color classification and matching quality inspection.

A camera system of a vehicle includes: a camera within a passenger cabin of the vehicle and configured to capture an image including an occupant of a seat within the passenger cabin; a straight edge detection module configured to detect a straight edge in the image; a score module configured to determine a score for the straight edge, the score corresponding to an optical quality of the camera; and an action module configured to take one or more actions when the score is less than a predetermined value.

The embodiment of the present application relates to the technical field of optical material manufacturing, and specifically discloses a medical optical material, a preparation method and application thereof, the medical optical material comprises the following raw materials: photosensitive resin, crosslinking agent, photoinitiator, inhibitor and ultraviolet blocking monomer. The embodiment of the present application adopts a continuous liquid surface photocuring technology based on a 405nm light source, realizes steep polymerization threshold and stable inhibition layer through O2 / TEMPO double inhibition, significantly reduces ghosting and window sticking, and completes deep layer crosslinking in an N2 environment while inhibiting yellowing and haze through secondary UV irradiation and heat post-curing, thereby solving the problem that most existing orthokeratology lenses adopt a traditional layered photocuring process and are prone to defects such as ghosting and yellowing. Moreover, the preparation method provided by the embodiment of the present application is simple, can be used for preparing orthokeratology lenses and other optical components with high optical quality, high oxygen permeability and biocompatibility, and has a broad market prospect.

The application belongs to the technical field of lighting, and particularly relates to a lighting device control method, a computer readable storage medium and a lighting device. The method comprises the following steps: determining a solar elevation angle of a geographical position of a lighting device at a target moment; determining atmospheric optical quality of the target moment according to the solar elevation angle; determining a ground spectrum of the target moment according to the atmospheric optical quality and a preset extraterrestrial radiation spectrum; determining a color temperature of the target moment according to the ground spectrum and a preset tristimulus value function; and performing color temperature control on the lighting device according to the color temperature at the target moment. In the application, astronomical parameters and atmospheric radiation transmission parameters that influence natural sunlight are fully considered, and the accuracy is high, so that a better natural sunlight simulation effect can be achieved.

The invention provides a glass liquid stirrer, and relates to the technical field of glass production and processing. The molten glass stirrer comprises a stirrer body and a supporting assembly for supporting stirring, the supporting assembly comprises a fixing arm, one end of the fixing arm is rotationally connected with a connecting rotating pipe, the stirrer body comprises a stirring pipe, and one end of the stirring pipe is detachably connected to the bottom of the connecting rotating pipe through a flange; a C-shaped stirring pipe communicated with the stirring pipe is fixedly connected to the outer surface of the stirring pipe, and a first inner pipe is fixedly connected to the interior of the stirring pipe. According to the molten glass stirrer, cold water circularly flows in the stirrer, the stirrer is prevented from being damaged by high temperature, the service life is prolonged, the stirrer is driven by the driving mechanism in the driving box to alternately rotate forwards and backwards, the fluid movement direction is continuously changed, molten glass in different areas is promoted to be mutually diffused and mixed, and the overall uniformity is improved; the number of bubbles in finished glass is reduced, and transparency and optical quality are improved.

Disclosed is a composition for cleaning and regenerating the hydrophobicity of the surface of a transparent polymeric material of high optical quality, characterized in that it comprises 20% to 40% by weight of a first liquid mixture of 0.2% to 3% by weight of paraffin and 97% to 99.8% by weight of a petroleum solvent that lies between heptane and decane, and 50% to 85% by weight of a second liquid mixture of 0.2% to 8% by weight of a surfactant having a molecular weight at most equal to 150 g / mol, 2-butoxyethanol, and 4% to 15% by weight of ethanol, the remainder to 100% being water; a method for cleaning and regenerating the hydrophobicity of the surface of a transparent polymeric material of high optical quality by means of this composition.

The invention relates to an atomic gas chamber and a preparation method thereof. The preparation method of the atomic gas chamber comprises the following steps: providing a middle cavity layer, a first cover plate and a second cover plate; the middle cavity layer is of a square tubular structure with a first opening end face and a second opening end face which are oppositely arranged. An acid solution is dripped on the first opening end face, the first opening end face is downwards placed on the first cover plate, the first opening end face is bonded with the surface of the first cover plate, and a semi-closed cavity is formed; performing first high-temperature treatment on the semi-closed cavity, so that the first opening end surface is bonded with the first cover plate; an acid solution is dripped on the second opening end face, the second opening end face is downwards placed on a second cover plate, the second opening end face is bonded with the surface of the second cover plate, and a totally-closed cavity is formed; and carrying out second high-temperature treatment on the totally-enclosed cavity, so that the second opening end surface is bonded with the second cover plate. Therefore, the high air tightness of the bonding interface of the gas chamber glass bulb and the high optical quality of the light passing surface can be considered.

A crucible-descent growth method for ultrafast scintillation crystals of trans-stilbene is disclosed, relating to melt growth methods for organic single crystals. This method aims to address the technical problems of compositional deviation and difficulty in controlling crystal quality and size in existing solution-grown trans-stilbene single crystals. The method first purifies the raw material using solution recrystallization, then seals the recrystallized trans-stilbene in a crucible. By precisely controlling the furnace temperature field and the crucible descent rate, a stable vertical temperature gradient is formed, achieving directional solidification growth of the crystal. The trans-stilbene scintillation crystals prepared by this method have a diameter of 25 mm and a constant-diameter section length of 60 mm, exhibiting excellent optical quality and a photo-induced decay time of 4.49 ns. 137 The light yield under Cs radiation source excitation reaches 21000 ph / MeV, with a decay time of 3.81 ns, making it suitable for radiation detection.

The present disclosure provides a system for optical detection of an eye, comprising: a light emitting assembly configured to form an incident light ray array comprising a plurality of incident light rays parallel to a chief ray; a half mirror configured to reflect the incident light ray array at an angle to an optical axis of the system for forming a plurality of chief rays parallel to the optical axis of the system; a first objective lens having an optical axis coinciding with the optical axis of the system for converging the plurality of chief rays formed via the half mirror reflection onto a pupil plane of a measured eye so as to form a spot array on a retina of the measured eye; and a photodetector configured to acquire a spot array image corresponding to the spot array for detecting optical performance of the retina of the measured eye. The present disclosure can simultaneously measure optical imaging quality of a central field of view of the retina along an optical axis direction and optical imaging quality of a peripheral field of view of the retina to achieve fast detection of optical quality of the eye for a wide field of view on and off the optical axis.

An ophthalmic instrument for measuring optical quality of an eye is provided, including: a multi-element eyepiece and a rotatable mirror. A mirror surface of the rotatable mirror is optically conjugated with a first focal plane in an object space of the multi-element eyepiece through a first lens, to adjust an angle of light entering the eye. A focal point of the first lens is arranged in a virtual focal plane of the multi-element eyepiece. The multi-element eyepiece includes an eyepiece, a field lens and a second lens arranged in sequence. The field lens includes a third lens, a fourth lens and a fifth lens arranged in sequence. The eyepiece, the third lens, the fourth lens and the fifth lens each is a positive lens, and the second lens is a negative lens.

The optical lens provided by this invention includes a lens barrel and a plurality of lenses. These lenses are sequentially arranged within the lens barrel from an object side to an image side along an optical axis. Each lens has an object-side surface facing the object side and allowing light to pass through, and an image-side surface facing the image side and allowing light to pass through. The lenses include at least one visible light-absorbing lens. The optical lens further satisfies at least two conditions to provide good optical quality while saving cost and reducing size.

The utility model discloses an offshore light-quality high-pressure-bearing high-corrosion-resistance support which comprises a plurality of buoys, fasteners are fixedly installed at the four corners of each buoy, every two adjacent buoys are fixedly connected together through the corresponding fasteners, connecting rods are further arranged among the buoys, and the connecting rods are connected with the buoys. The buoys are connected into a whole through the connecting rods, and a supporting assembly is arranged at the tops of the buoys. When the marine light-quality high-pressure-bearing high-corrosion-resistance support is installed, the plurality of buoys are fixedly connected into a whole through the fasteners and the connecting rods, so that the buoy type support has integrity, the undulating motion of the buoy type support under strong wind and big waves has consistency, and part of influences generated by strong wind and big waves are offset through the overall motion.