21results about How to "Eliminate stray light" patented technology

The embodiment of the invention discloses a display panel, a display device and a preparation method of the display panel. The display panel comprises a substrate, a light-emitting functional layer, a touch functional layer and a color film layer, a pixel definition layer of the light-emitting functional layer is provided with a first opening in a sub-pixel; a black matrix layer of the color film layer is provided with a second opening in a sub-pixel, and the orthographic projection of the second opening on the substrate is overlapped with the orthographic projection of the filter layer on the substrate; in one sub-pixel, the second touch metal layer of the touch function layer comprises N metal parts, N is larger than or equal to 1, the nth metal part is located on the nth side of the first opening, n belongs to [1, N] and comprises a first part and a second part, the included angle between the second part and the plane parallel to the substrate is an acute angle, and the included angle between the first part and the plane parallel to the substrate is larger than or equal to 1. The orthographic projection of the metal part on the substrate is partially overlapped with the orthographic projection of the first opening on the substrate, and the orthographic projection of the edge of the nth side of the second opening on the substrate is located between the orthographic projection of the edge of the nth metal part on the substrate and the orthographic projection of the center of the first opening on the substrate.

The invention relates to the technical field of infrared optical systems, and particularly discloses a small-F-number refrigeration type athermalization medium-wave infrared optical system which comprises seven coaxial lenses, the seven lenses are divided into a front group and a rear group from the object space to the image space, and the front group is composed of a first front group lens, a second front group lens and a third front group lens; the rear group consists of a rear group lens I, a rear group lens II, a rear group lens III and a rear group lens IV; a secondary imaging structural form is adopted, 100% cold diaphragm efficiency is met, stray light can be effectively eliminated in cooperation with a corresponding optical machine structural design, the system automatically adjusts the position of the lens through real-time monitoring of the temperature sensor and an intelligent temperature compensation algorithm, it is ensured that the optical system always keeps high-precision imaging within the temperature fluctuation range, and the optical system is high in imaging precision. Image surface drift is avoided, the focal length change is accurately calculated and compensated, so that the optical system can adapt to wide temperature fluctuation, and the imaging quality is ensured not to be influenced.

The utility model provides an optical element, an optical assembly and an optical lens. The optical element comprises an outer ring surface far away from an optical axis; the inner ring surface is close to the optical axis, the inner ring surface is an inclined surface, a plurality of extinction structures arranged at intervals are arranged on the inner ring surface, any extinction structure is composed of a plurality of tooth grooves, and the tooth groove section shapes of the extinction structures on the same inner ring surface comprise one or more types; the object side surface and the image side surface are connected with the outer ring surface and the inner ring surface; the extinction structures on the inner ring surface are irregularly arranged at intervals or uniformly arranged at intervals; the tooth groove section shape of the extinction structure comprises one or more of an irregular triangular tooth groove, an irregular trapezoidal tooth groove, an irregular arc-shaped tooth groove and an irregular rectangular tooth groove. The light reflectivity of the optical element is less than or equal to 10%; at least five tooth grooves are contained in any radian with the angle of 45 degrees on the inner ring face. According to the utility model, stray light related to the pressing ring can be improved and weakened, and the structure strength is enough.

The invention belongs to the field of optical display, and particularly relates to a longitudinal chromatic aberration adjusting system based on a geometric phase liquid crystal lens, which comprises the geometric phase liquid crystal lens for changing imaging focal lengths of different wavebands of visible light incident to the geometric phase liquid crystal lens and reversing the size relation of the imaging focal lengths of the different wavebands of the visible light; the circular polarizing film modulates the light incident on the circular polarizing film into circular polarized light and eliminates stray light; the preset lens is combined with the geometric phase liquid crystal lens to reduce the focal power; after incident light passes through the geometric phase liquid crystal lens, the circular polarizer and the preset lens, different visible light wave bands are imaged on the retina of a viewer, and longitudinal chromatic aberration is eliminated. Through the above arrangement, through the combination of the geometric phase liquid crystal lens, the circular polarizer and the preset lens, the incident light can have basically the same focal length on the retina of the eyes of a viewer, that is, the interference of a longitudinal error on eye imaging is eliminated, and the viewing experience is improved.

The invention relates to a laser emitting structure capable of eliminating stray light and a laser emitting and receiving device. The structure comprises an emitting element, an emitting sleeve and an emitting lens, the transmitting sleeve comprises a transmitting element mounting section, a laser passing section, a laser stray light absorption section and a transmitting lens mounting section which are connected in sequence, the transmitting element is arranged in the transmitting element mounting section, the transmitting lens is arranged in the transmitting lens mounting section, and the laser stray light absorption section is provided with black internal threads. Compared with the prior art, stray light is eliminated by changing the internal structure of the emitting sleeve, the black internal thread structure is innovatively arranged in the emitting sleeve, and strong light emitted at a time is weakened or absorbed after being reflected by the stray light reflected by the emitting sleeve for multiple times through the black internal thread structure; the halo phenomenon existing in an existing device can be effectively eliminated, and the near-field measurement precision of the laser radar is improved.

The invention discloses a wide-temperature long-wave infrared coaxial four-mirror optical lens for space tiny dark and weak target detection, and solves the problems that an existing optical lens for space tiny dark and weak targets is large in size, high in weight and poor in temperature adaptability. The first reflecting mirror, the second reflecting mirror, the third reflecting mirror and the fourth reflecting mirror are sequentially and coaxially arranged from a light incident end to a light emergent end; the reflecting surfaces of the first reflecting mirror and the second reflecting mirror are oppositely arranged, and the reflecting surfaces of the third reflecting mirror and the fourth reflecting mirror are oppositely arranged; light through holes are formed in the centers of the second reflector, the third reflector and the fourth reflector; the second reflector is used for receiving incident light and reflecting the incident light to the first reflector, and light beams reflected by the first reflector enter the fourth reflector through light through holes in the centers of the second reflector and the third reflector and are reflected to the third reflector for reflection. And the light beams reflected by the third reflector pass through a light through hole in the center of the fourth reflector and then are converged to a photosensitive receiving surface of an external detector.

The embodiment of the invention discloses a laser radar and a mobile device, the laser radar comprises a laser emission module, a laser receiving module and a light extinction structure, the light extinction structure comprises at least one of a first light extinction device and a second light extinction device, the first light extinction device is provided with a first light through hole, one first light through hole corresponds to one laser emission unit, and the second light extinction device is provided with a second light through hole. At least part of detection light formed by each laser transmitter in a laser transmitting unit can pass through the light guide plate; the second light eliminator is provided with a second light through hole, and one second light through hole corresponds to one laser receiving unit and is used for enabling at least part of the echo light correspondingly received by each laser receiver in the laser receiving unit to pass through. The first extinction device and the second extinction device can reduce and even eliminate stray light on light passing paths of detection light and echo light in a multi-channel radar system, so that the laser radar has a cleaner point cloud form, recognition of a target object is more accurate, and anti-interference performance to a complex environment is higher.

The utility model discloses an anti-crosstalk multimode interference coupler for an MZI (Mach Zehnder Interference) structure. The coupler specifically comprises a single-mode input waveguide, a multimode interference area waveguide, two single-mode output waveguides, two stray light output waveguides, two stray light interference area waveguides and two metal absorption areas, the metal absorption region, the stray light interference region, the stray light output waveguide, the multi-mode interference region waveguide and the single-mode output waveguide are connected in sequence, and the coupler is symmetric about the single-mode input waveguide.

The invention relates to the technical field of head-up displays, in particular to a reflecting part, a head-up display system and a vehicle. The reflecting part comprises a substrate, a transflective film and a first antireflection film, the reflectivity of the transflective film to first polarized light is larger than that of the transflective film to second polarized light, the first antireflection film is located on one side of the substrate, the transflective film is located in the substrate, or the transflective film is located on the other side of the substrate, and the first antireflection film is located in the substrate. Or the transflective film is located between the first antireflection film and the substrate. By arranging the transflective film, when the light is reflected, the reflectivity for the first polarized light is greater than the reflectivity for the second polarized light, so that when the image light of the image source is the first polarized light, the reflectivity for the first polarized light can be improved, and the display effect and the display brightness of the image are improved. And by arranging the first antireflection film, the light transmission amount of the reflecting piece is increased, and the imaging definition is further improved.

The present invention provides a Fizeau interferometer and an interference measurement system, which relate to the field of laser coherence technology. The Fizeau interferometer comprises a laser, a polarization beam splitter prism, a collimator, a reference mirror and a test mirror arranged in sequence along the propagation direction of light, and also comprises an imaging system; a quarter wave plate is arranged between the polarization beam splitter prism and the reference mirror, and the quarter wave plate is arranged at an angle. The Fizeau interferometer adopts a polarization beam splitter prism and a quarter wave plate, the polarization beam splitter prism has the ability to cut off P polarized light / S polarized light, can eliminate stray light generated by the beam splitter prism itself, and the inclined setting of the quarter wave plate can reduce the stray light generated by the quarter wave plate itself, so the Fizeau interferometer reduces the influence of stray light.

The invention relates to the technical field of infrared optical systems, and specifically discloses a small F-number refrigerated athermal medium-wave infrared optical system, comprising: seven coaxial lenses, wherein the seven lenses are divided into a front group and a rear group from the object side to the image side, wherein: the front group consists of a front lens group 1, a front lens group 2, and a front lens group 3; the rear group consists of a rear lens group 1, a rear lens group 2, a rear lens group 3, and a rear lens group 4; the invention adopts a secondary imaging structure to meet 100% cold aperture efficiency, and can effectively eliminate stray light in conjunction with a corresponding optical-mechanical structure design; through real-time monitoring of a temperature sensor and an intelligent temperature compensation algorithm, the system automatically adjusts the lens position to ensure that the optical system always maintains high-precision imaging within the temperature fluctuation range, avoiding image plane drift; and through accurate calculation and compensation of focal length changes, the optical system can adapt to a wide range of temperature fluctuations to ensure that the imaging quality is not affected.

A light path system for eliminating stray light of a projector is suitable for the technical field of projector application and solves the problem that in an existing projector light path, the distance between a reflective mirror and a field lens is too short, so that stray light generated by total reflection of the field lens is reflected by the reflective mirror and then ghosts are generated on a projection plane. The system comprises heat insulation glass, an LCD, a field lens, a reflective mirror and a projection lens. The LCD illumination collimation system, the heat insulation glass, the LCD and the field lens are coaxially arranged; after light rays emitted by the light source pass through the heat insulation glass, the LCD and the field lens by the LCD illumination collimation system, stray light rays totally reflected by the field lens are reflected by the reflective mirror and enter the projection lens, and the projection lens images a picture displayed by the LCD. By changing the angle of the reflector and the inclination angle of the illumination system, stray light totally reflected by the field lens is reflected to the mechanism at a characteristic angle to be absorbed and eliminated under the condition that the optical path is ensured to be constant.

This invention relates to the field of portable lighting fixtures, and more particularly to a portable LED lighting fixture, comprising a base. A rotating ring assembly, composed of multiple concentric rings, is installed in the center of the base. These concentric rings are rotatably connected by rotating rods. The rotating rods on the inner and outer sides of the concentric rings are vertically distributed. A base column is rotatably connected to the center of the innermost concentric ring via a rotating rod. A counterweight is fixedly connected to the bottom of the base column, and the counterweight is located in the lower part of the base. An electric push rod is installed in the upper part of the base column, and a fixing frame is fixedly connected to the top of the electric push rod. A fixing seat is fixedly connected to the bottom of the fixing frame, and a guide strip is fixedly connected to the center of the bottom end of the fixing seat. This invention allows for free control of the number of illuminated light panels and the actual luminous area according to ambient brightness and lighting requirements. It can achieve both concentrated high-brightness lighting in a small area and full-area illumination by activating all light panels, distributing light power as needed.

The invention relates to the technical field of near-to-eye display, in particular to a two-dimensional vector body holographic grating, a manufacturing device and method thereof and an optical machine, and the manufacturing device of the two-dimensional vector body holographic grating comprises a sample table used for fixing a holographic dry plate; the light emitting assembly is used for emitting exposure light; the beam splitting exposure assembly is located on a light path of the exposure light and used for splitting the exposure light into a first light beam, a second light beam, a third light beam and a fourth light beam, the first light beam is vertically emitted into the first surface of the holographic plate, and the second light beam, the third light beam and the fourth light beam are respectively emitted into the second surface of the holographic plate at preset incident angles; the orthographic projection of the second light beam on the holographic plate and the orthographic projection of the third light beam on the holographic plate are located on the same straight line and have opposite propagation directions, and the propagation direction of the orthographic projection of the fourth light beam on the holographic plate is perpendicular to the propagation direction of the orthographic projection of the second light beam on the holographic plate.

The present invention provides a thin and light optical display system, an imaging lens module and a VR device, belonging to the field of optical imaging technology. The optical display system includes a display and a first optical magnification component and a second optical magnification component sequentially arranged on the light output optical path of the display; the first optical magnification component includes a first optical lens, the radius of curvature of the surface of the first optical lens far from the display is R11, and the radius of curvature of the surface of the first optical lens close to the display is R12, which satisfies -100 < R11 + R12 < 300. The imaging lens module has a small volume, light weight, good imaging quality, a large field of view angle range, and can eliminate most stray light. The VR device is convenient to wear, can be adapted to people with different myopia degrees by adjusting the virtual image distance of the system. When the virtual image distance changes regularly, the ciliary muscles of the user's eyes can also be exercised during repeated focusing, playing a role in protecting the eyes and correcting eyesight.

This utility model relates to an ultraviolet detector that accommodates different sensitivities. It solves the technical problem of poor detection performance of existing detectors for components of different concentrations. It includes a detector housing, with a light source mechanism at one end of the housing. The light source mechanism is connected to a grating body disposed within the detector housing via a light source channel. A beam-splitting housing is installed at the end of the detector housing away from the light source mechanism. The beam-splitting housing has a first optical path and a second optical path arranged perpendicularly to each other. A photosensitive detection component connected to the first and second optical paths is mounted on the beam-splitting housing. The beam-splitting mechanism is located inside the detector housing and is connected to a polarization mechanism, which is connected to the first and second optical paths respectively via mirrors. The advantages are: the first and second optical paths with different optical path lengths can meet the detection requirements for components of different concentrations; and the polarization mechanism can eliminate stray light from monochromatic light, improving the detection effect.

The invention provides a spectrum module and an etching end point detection device and method.The spectrum module comprises a shell, a light inlet is formed in the shell, a diaphragm, a collimating mirror, an optical grating, a focusing mirror and a detector are arranged in the shell, the light inlet is used for being connected with an external optical fiber or enabling light to enter the shell, the diaphragm is used for receiving the light at the light inlet, and the collimating mirror is arranged on the shell; the collimating mirror is used for reflecting light from the diaphragm to the grating, the grating is used for reflecting light reflected by the collimating mirror to the focusing mirror, the focusing mirror is used for receiving reflected light from the grating and reflecting the reflected light to the detector, and a first light trap and a second light trap which are asymmetric are arranged on the shell between the focusing mirror and the detector. The first light trap is used for eliminating high-order diffracted light of the grating, the second light trap is used for eliminating scattered light of the focus lens towards the detector, stray light in the device is reduced, and the accuracy of weak light signal analysis in the etching process is improved.

The utility model discloses a kind of curtain wall decorative lamps, including lamp shell, light source board, lampshade and adjusting mounting seat, light source cavity inside lamp shell is equipped with asymmetric light-reflecting inclined plane A and light-reflecting inclined plane B, cooperate with the light mixing inclined plane in lampshade, light efficient mixing and uniform light emission are realized jointly, effectively eliminate glare and mottle, light source board adopts double-row lamp pearl of staggered arrangement, each lamp pearl is equipped with flexible convex cover, further eliminate stray light, lamp body bottom connects multiple groups of anti-falling rope, guarantee high-altitude safety, its core is adjusting mounting seat adopts worm gear drive mechanism, by rotating knob, stepless fine adjustment of the pitch angle of lamp body can be realized, and using its inherent self-locking characteristic, ensure that angle adjustment is long-term stable after, windproof and anti-vibration, solve the difficult problem that traditional curtain wall lamp adjustment is complicated, easy to deviate.

The application provides an LED epitaxial structure and a preparation method thereof. The LED epitaxial structure comprises, from bottom to top, a bottom buffer layer on a substrate, an etching stop layer, a first-type semiconductor layer, an active layer and a second-type semiconductor layer. The second-type semiconductor layer comprises, from bottom to top, an electron blocking layer, a second waveguide layer, a second-type confinement layer, a transition layer, a second-type window layer and a second-type ohmic contact layer. The electron blocking layer is a periodic structure formed by alternately growing a first blocking layer and a second blocking layer. The Al component of the first blocking layer in each period is higher than that of the first blocking layer in the previous period, and the Al component of the second blocking layer in each period is lower than that of the second blocking layer in the previous period. The electron blocking layer designed in the application is in a ladder type, which is beneficial to electron confinement and hole injection, thereby increasing the radiation recombination rate in the active layer and improving the light-emitting efficiency and brightness of the LED.

The utility model relates to the technical field of display screens, and particularly discloses an OLED module. The OLED module comprises a frame, a containing groove is formed in the frame, a PCB, a fiber layer, a heat dissipation assembly, an OLED display screen and a polaroid are sequentially stacked in the direction from the groove bottom of the containing groove to the groove top of the containing groove, and the PCB is electrically connected with the OLED display screen; the heat dissipation assembly comprises an installation back plate and a heat dissipation film installed on the upper plate face of the installation back plate, the heat dissipation film is attached to the lower surface of the OLED display screen, and the polaroid is attached to the upper surface of the OLED display screen through the adhesion layer. According to the OLED module, by means of the arrangement of the heat dissipation film in contact with the OLED display screen, the heat dissipation effect of the OLED display screen is improved; by means of the arrangement of the fiber layer, the bending resistance of the OLED module is improved; with the help of the polaroid, an object can be seen more clearly and softly; through the above structural design, thinning and power consumption reduction improvement of the OLED module can be realized.

The invention discloses a low-cost unmanned aerial vehicle airborne infrared temperature measurement lens which comprises a front fixing group and a focusing group which are sequentially arranged from the object side to the eye side. The focal power of the front fixing group is positive; the focal power of the focusing group is negative; a first lens L1 is accommodated in the front fixed group; a second lens L2 is accommodated in the focusing group; the first lens L1 is a positive meniscus lens; the second lens L2 is a biconvex lens; the first lens rear surface S2, the second lens front surface S3 and the second lens rear surface S4 are all aspheric surfaces. The lens is stable in transmission, compact in mechanism and convenient to assemble, and has high imaging quality and high spatial resolution of MTF (on-axis (at) 40lp / mm) greater than or equal to 0.5.