305results about "Reflex reflectors" patented technology

A measuring arrangement (10; 110, 210; 310) for determining the position of a movable component (526) in an optical system (500) for microlithography comprises: an optical resonator (26) with two resonator mirrors (28, 30) enclosing a resonator cavity (32), and a movable measuring mirror (14) associated with the component, which is arranged within the resonator cavity for directing a measuring beam back and forth between the resonator mirrors. The measuring mirror is arranged at a working distance (34) from one of the resonator mirrors, which has a curvature adapted to the measuring mirror such that its center point (31) is located on the measuring mirror or at most 10% of the working distance therefrom.

The invention discloses a reflector structure for a projection imaging lens, which comprises a reflector body, the reflector body is placed in an optical projection imaging lens with more than two lenses, and the reflector body comprises a middle light-passing area, a middle light-passing area and a middle light-passing area, so that light of the optical projection imaging lens is emitted through the middle light-passing area to become direct emergent light; the upper end of the first reflecting region is small and the lower end is large; the upper end of the second reflecting region is large and the lower end is small; the optical projection imaging lens is vertically placed, the light source or the image source is arranged below the optical projection imaging lens, and the lens is arranged above the optical projection imaging lens; the reflector body is configured to be matched with a circular projection imaging lens in rotational symmetry or a projection imaging lens in a non-rotational symmetry structure. The surface brightness and uniformity of the light-emitting surface of the projection lens are improved.

The invention belongs to the technical field of optical anti-counterfeiting, and relates to an optical anti-counterfeiting GaN metasurface and an optical anti-counterfeiting product. The optical anti-counterfeiting metasurface comprises a substrate layer and a light reflection structure, the light reflection structure is arranged on the surface of one side of the substrate layer and is used for reflecting incident light so as to output emergent light of which the wavelength continuously changes within a set angle range; the light reflection structure comprises a plurality of first reflection cylinders, the first reflection cylinders are arranged on the surface of one side of the substrate layer in an array mode, and a groove is formed between every two adjacent first reflection cylinders. By adopting the optical anti-counterfeiting GaN metasurface provided by the scheme, 10nm-level narrow-band wavelength selection can be performed on incident light, emergent light with extremely high saturation color can be observed in any direction in the plane where the metasurface is located based on human vision under the condition of sunlight irradiation, and the color of the emergent light continuously changes along with the observation angle, so that the color of the emergent light is changed continuously. Therefore, the optical anti-counterfeiting function is achieved, special optical materials are not needed, cost is low, and the structure is simple.

The present invention provides an optical anti-counterfeiting element and an optical anti-counterfeiting product. The optical anti-counterfeiting element includes: a substrate; and a micro-structure layer, wherein the micro-structure layer is located on at least one side surface of the substrate, and aplane where the micro-structure layer is located has at least one principal line, the micro-structure layer comprises a plurality of reflective structures along an extension direction of the at least one principal line; aside of each of the plurality of reflective structures away from the substrate is provided with a reflective surface, and a plane angle of a dihedral angle formed by the reflective surface and asurface of the substrate is an inclination angle; wherein inclination angles of all of the plurality of reflective structures in the extension direction of the at least one principal lineat least includea variation period, and within the variation period, avariation of all of the inclination angles is formed by superposing a main variation and a secondary variation, and when the optical anti-counterfeiting element is rotated along a rotation axis in aplane where the optical anti-counterfeiting element is located, the optical anti-counterfeiting element presents a global dynamic feature and a localized dynamic feature due to the main variation and the secondary variation. The present invention solves the problem in the related art that a dynamic feature of an optical anti-counterfeiting element is not easily recognized.

The invention provides a high-transmittance peep-proof film and a preparation method thereof.The peep-proof film comprises a substrate layer, a light-transmitting layer, a peep-proof layer and an antireflection film layer which are sequentially arranged from bottom to top, the light-transmitting layer comprises a light-transmitting base layer, a plurality of isosceles-trapezoid-shaped first protrusions are periodically distributed on the light-transmitting base layer at intervals, the peep-proof layer comprises a peep-proof base layer, and the antireflection film layer is arranged between the first protrusions and the peep-proof base layer. The peep-proof base layer is provided with a plurality of second protrusions in an isosceles trapezoid shape at intervals periodically, each second protrusion is located between every two adjacent first protrusions, the distance between every two adjacent first protrusions is matched with the lower bottom faces of the second protrusions, and the side faces, connected with the second protrusions, of the first protrusions are further provided with reflecting layers. By arranging the reflecting layer, scattering and absorption of light rays are effectively reduced, reflection of the light rays on the surface of the peep-proof film is reduced by arranging the antireflection film layer, the peep-proof film has high light transmittance, side light rays can be effectively blocked by arranging the periodic second protrusions on the peep-proof layer, and secrecy of images is protected.

An article including a reflector having a first surface and a second surface opposite the first surface; a first selective light modulator layer external to the first surface of the reflector; a second selective light modulator layer external to the second surface of the reflector; a first absorber layer external to the first selective light modulator layer; and a second absorber layer external to the second selective light modulator layer; wherein each of the first and second selective light modulator layers include a host material is disclosed herein. Methods of making the article are also disclosed.

Techniques for protecting a sensor from an obstruction such as liquid are discussed herein. For instance, a sensor cover assembly can include a cover to protect a sensor from precipitation, contaminants, or other obstructions. The cover of the sensor cover assembly can be configured to direct an obstruction (e.g., a liquid) away from a lens of the sensor (e.g., a ring lens of a lidar sensor) to reduce obstructions to a field of view of the sensor. The cover can include one or more channels (e.g., a trough, a downspout, a gutter, etc.) or shapes (e.g., a curved surface, a sloped surface, a convex surface, etc.) to divert the obstruction away from the lens of the sensor.

A video is preferably displayed on outside of a space. The present invention contributes to “the third goal: Good Health and Well-being (for all people)”, “the ninth goal: Industry, Innovation and Infrastructure” and “the eleventh goal: Sustainable Cities and Communities” of the sustainable development goals. An air floating video display system includes: a display panel configured to display a video; a light source apparatus for the display panel; a retroreflector configured to reflect video light emitted from the display panel and to cause the reflected light to aerially display an air floating video of a real image; and a video light control sheet configured to convert an optical path of the video light. The video light control sheet is arranged between the retroreflector and the display panel to adjust an emission direction and a divergence angle of a video light flux emitted from the display panel.

The invention relates to the technical field of compressor crankshafts, in particular to a refrigerator compressor crankshaft and a machining process thereof.The machining process comprises the following steps that impact parameters changing in a staged mode are set through a control unit, and the to-be-machined surface of the crankshaft is treated to form a nanocrystalline layer; secondly, setting atmosphere and electrical parameters which change in a stepped mode through a control unit, and processing the crankshaft processed in the first step so as to form a gradient permeation layer; and step-type changing electrical parameters are set through a control unit, the crankshaft treated in the second step is treated so as to grow a hydrogen-free amorphous carbon layer, the problems that due to internal stress, the coating binding force is poor, the uniformity of the coating on the complex morphology is poor, the coating performance is limited, and the process control precision is not high can be solved, and the application range of the hydrogen-free amorphous carbon layer is widened. Therefore, the comprehensive performance and service life of the crankshaft are improved.

An optical element 20 comprises: a mirror array 24; and an optical surface 211 opposite to the mirror array 24. The mirror array 24 includes a mirror group 241 composed of a plurality of reflex mirrors 25 arranged in the X direction, and a mirror group 242 composed of a plurality of reflex mirrors 25 arranged in the X direction. The mirror group 241 and the mirror group 242 are lined up in the Y direction. The reflex mirrors 25 in the mirror group 241 extend in a W1 direction inclined with respect to the optical surface 211. The reflex mirrors 25 in the mirror group 242 extend in a W2 direction inclined with respect to the optical surface 211. The mirror group 241 and the mirror group 242 partially overlap each other in a V1 direction.

Reflector arrangement (1) for determining a position and / or for marking a target point having at least two retro-reflecting elements (10), wherein each of the at least two retro-reflecting elements (10) comprises a respective front boundary surface (11) configured for entry of measuring light into the respective retro-reflecting element (10) and a respective back boundary surface (12) configured for reflecting the measuring light as reflected measuring light, wherein the front boundary surface (11) and the back boundary surface (12) are arranged on opposite sides of the respective retro-reflecting element (10), and a respective optical axis (13) defined by the arrangement of the front boundary surface (11) and / or the back boundary surface (12) of the respective retro-reflecting element (10). The front boundary surface (11) and the back boundary surface (12) of each of the at least two retro-reflecting elements (10) are of curved shape, and for each of the at least two retro-reflecting elements (10) an incidence angle of the measuring light relative to its optical axis (13) is equal to an exit angle of the reflected measuring light relative to its optical axis (13).

An optical reflection assembly, an optical lens module and an electronic device are disclosed. The optical reflection assembly includes a reflection element, a reflection element holder and a structure. The reflection element includes a reflection surface, wherein a light ray is incident on the reflection surface and is turned by the reflection surface. The reflection element holder includes a mounting surface, wherein the mounting surface is arranged corresponding to the reflection element. The structure is made of metal and has a three-dimensional structure. At least a portion of the structure is embedded in the reflection element holder. The structure includes a first support wall, a second support wall and at least one extension wall. The first support wall and the second support wall are bent to form a first bending line and present an angle. The extension wall and the second support wall are bent to form an extension bending line, and the extension bending line is an open line. In this way, the structural rigidity and the assembly reliability can be improved.

An aerial video display device according to the present invention comprises a first aerial display unit (DU1) and a second aerial display unit (DU2). The first aerial display unit (DU1) includes a first retroreflective material (11A), a first beam splitter (12A), and a first display (13A), and is configured to display a first aerial image (14A) at a position on the first display (13A) in plane symmetry with respect to the first beam splitter (12A). The second aerial display unit (DU2) includes a second retroreflective material (11B), a second beam splitter (12B), and a second display (13B), and is configured to display a second aerial image (14B) at a position on the second display (13B) in plane symmetry with respect to the second beam splitter (12B). The first aerial display unit (DU1) and the second aerial display unit (DU2) are disposed such that the first aerial image (14A) and the second aerial image (14B) are displayed at the same position.

A display device configured for displaying an aerial image by using retro-reflection is provided. The display device includes: a light source disposed being inclined to one side of a reference line; a retroreflective member disposed being inclined to another side of the reference line; a polarized-beam splitter disposed to face the light source and the retroreflective member; and a transmission film formed on the polarized-beam splitter. The transmission film includes a low transmittance area in which the light source is difficult to be seen in an observation range where the aerial image is visible.

Provided is a plated member having, on an outer surface, a plated film composed mainly of chromium formed by using a trivalent chromium bath containing at least chromium, carbon, and oxygen, the plated film containing 60 at% or more of chromium and 1 at% to 30 at% of carbon, and having, on the outer surface, an indentation hardness of 11.1 GPa or more, and a degree of crystallinity calculated from a ratio of the integrated peak intensity of a measured value of an X-ray diffraction measurement and the following expression (1) is 5% or more. Degree of crystallinity (ratio of integrated peak intensity) = {(crystalline) / (crystalline + amorphous)} × 100% Here, the indentation hardness refers to a value obtained by instrumented indentation hardness measurement using a nanoindentation method (ISO 14577), and the integrated intensity ratio in expression (1) refers to a value determined in X-ray diffraction (XRD) analysis under conditions of 2θ: 30° to 60°, a half-width of crystalline: < 3, and a half-width of amorphous: ≥ 3.

Retroreflective device (5) for a motor vehicle (1), characterized by: - a first reflector (10) comprising a colored first cover plate (11) which is provided with a specifically manufactured retroreflective optic (13) by means of which a first quantity of light (8) directed onto the retroreflective device (5) can be selectively reflected into a retroreflective area (14); and - a second reflector (15) formed separately from and arranged next to the first reflector (10), which comprises a second cover plate (16) having the same color as the first cover plate (11), formed separately from and directly adjacent to the first cover plate (11), which: o is equipped with a specifically manufactured retroreflective optic by means of which a second quantity of the light (8) emitted onto the retroreflective device (5), which is smaller than the first quantity, can be selectively reflected into the retroreflective area (14) or reflection of the light (8) emitted onto the retroreflective device (5) into the retroreflective area (14) is prevented; or ◯ free from a specifically manufactured retroreflective optic for the targeted reflection of light.

The present inventive concept relates to a target for use in surveying applications, said target comprising: a base element having a central axis, a reflector for reflecting light beams being incident on said target, said reflector including a plurality of retroreflectors arranged around said central axis to cover an angular area of substantially 360 degrees, wherein said reflector has an outer circumference and an inner circumference as defined by the arrangement of the retroreflectors and wherein a retroreflector has a first side located at the outer circumference and a second side located at the inner circumference; and a plurality of light emitting elements providing a plurality of apparent light sources arranged around said central axis, wherein an apparent light source is positioned within the inner circumference of the reflector for emitting light in a direction away from the central axis of the base element.

The invention relates to a light reflector element having several reflector surfaces which are aligned at an angle to a predefined direction of light incidence of the light reflector element, wherein the reflector surfaces can be arranged ring-shaped around a center of the light reflector element at a uniform angular distance to each other, wherein the reflector surfaces are arranged opposite each other with respect to the center of the light reflector element, so that light incident in the direction of light incidence (L) is deflected by the reflector surfaces into light rays which run towards each other in different spatial directions and meet in a central axis which runs through the center in the direction of light incidence. The invention further relates to a reflector arrangement with at least two such reflector elements and a quantum gradiometer. In general, the invention relates to the field of atom interferometers, in particular with magneto-optical traps (MOTs). In particular, the invention relates to atom interferometric gravimeters and gradiometers formed therewith.

To provide a portable space floating image display system capable of suitably displaying images onto the outside of a space so as to contribute to sustainable development goals of "3. good health and well-being for all," "9. building a foundation for industry and technological innovation," and "11. creating sustainable cities."SOLUTION: A space floating image information display system is provided, comprising a housing accommodating a display panel and a light source device, a power supply unit provided with a power supply and coupled to the housing via a first linkage, and a frame structure holding a retroreflective member coupled to the housing via a second linkage.SELECTED DRAWING: Figure 5

The present application belongs to the field of automobile head-up display technology, and relates to a vehicle-mounted head-up display optical film with light scattering function and a preparation method thereof. The present application adopts a heat-sensitive shape memory idea, utilizes the light-sensitive characteristics and shape memory function of a light-heat effect type shape memory material, and sets a dynamic scattering layer scattering part. When the front sunlight is irradiated, the scattering part is raised, so that the sunlight is scattered to other directions through the scattering effect of light. Further, the scattering layer substrate is set as an encapsulated scattering solution. The shape memory material in the scattering solution is deformed and curled when irradiated by sunlight, absorbs and reflects part of the light, thereby further reducing the penetration of sunlight into the display film into the driver's line of sight. Moreover, reflective particles and light-absorbing particles are added in the scattering solution, further reducing the penetration of sunlight into the display film, thereby preventing or reducing sunlight from directly entering the driver's eyes from multiple aspects, and further improving the safety of driving.

This application provides a quantum optical microcavity device modified with fluorinated organophosphonic acid and its fabrication method, relating to the fields of organic chemistry and optical engineering. The quantum optical microcavity device includes a microcavity body and a fluorinated organophosphonic acid monolayer attached to the surface of the microcavity body. A hydrophobic fluorinated organophosphonic acid monolayer is formed on the surface of the microcavity body through a chemical reaction between a mixed solution containing fluorinated organophosphonic acid molecules and the surface of the microcavity body. Since the active head groups of the fluorinated organophosphonic acid can form chemical bonds with –OH and Si–O–Si on the surface of silica through reaction, the adsorption of water molecules from the air onto the –OH and Si–O–Si on the surface of the silica microcavity body can be effectively suppressed, thus improving the Q-value stability of the whispering-gallery mode quantum optical microcavity device.

The invention relates to a piston rod (1) comprising a metallic piston rod base body (2) and a first coating (3) applied to a surface of the piston rod base body (2) in a coating area (B) by means of galvanic deposition, which - is formed by a tin-nickel alloy, wherein non-metallic particles in the form of graphite and / or molybdenum disulfide and / or titanium carbide and / or tungsten carbide and / or diamond are optionally incorporated in the tin-nickel alloy, or - is formed by a zinc alloy, which in turn is coated with a lubricating varnish (4). The invention further relates to a use of such a piston rod (1).

The present disclosure generally relates to: (1) road marking in which a radar reflective dihedral corner reflector or other suitably oriented directional reflector capable of reflecting radar signals is embedded; (2) arranging radar reflection road surface marks on the driving surface; (3) manufacturing the road surface mark and mounting the road surface mark on a driving surface; (4) a radar transceiver on or within the vehicle for sensing radar reflective road markings and measuring the distance between the vehicle and the markings; (5) a vehicle equipped with such a radar transceiver; and (6) a method of controlling or assisting in the lateral steering or positioning of a vehicle on a driving surface (e.g., a road or a lane of a road) based on the detection of radar-reflected road markings on the driving surface (e.g., along or near a road or lane boundary).

A system for use in imaging in the air, comprising: an image source (1), a transflective mirror (2) and an opposing reflective element (3); a light emitted by the image source (1) passes through a reflection of the transflective mirror (2) and is irradiated onto the opposing reflective element (3), wherein the light is reflected on the opposing reflective element (3) and then emerges in an opposite direction along an original incident path, and after being transmitted by the transflective mirror (2), then forms a real image (4); the opposing reflective element (3) comprises a large number of micro-structures (31, 31') for use in reflecting in an opposing direction, wherein a relationship between the diameter of the micro-structures (31, 31'), the dot pitch of a source image pixel array, and an optical path from the real image (4) to the opposing reflective element (3) is designed as follows: the diameter of the micro-structures (31, 31') is linearly related to the dot pitch, and the optical path is linearly related to a square of the dot pitch. The system does not require any medium and may present an image directly in the air or even in a vacuum.

In a sliding member, a hard material is dispersed in a soft metal matrix to form a surface layer to improve its fatigue resistance. The sliding member has a substrate layer and a surface layer, wherein the surface layer has a metal matrix and a hard material dispersed in the matrix and which is harder than the matrix, the hard material having a slope in its hardness, the slope of which gradually decreases from the inside of the hard material to the surface.

The utility model discloses an electroplating device for processing a bearing intermediate ring, which comprises an electroplating bath, supporting legs are fixedly mounted at the bottom of the electroplating bath, vertical frames are integrally arranged on two sides of the top of the electroplating bath, a first fan is fixedly mounted at the bottom of the electroplating bath, a connecting pipe is fixedly mounted at an output port of the first fan, and a second fan is fixedly mounted at the output port of the connecting pipe. And air guide pipes are fixedly installed at the other ends of the connecting pipes, the air guide pipes are fixedly installed on the opposite faces of the two vertical frames, a plurality of spray heads are fixedly installed on the opposite faces of the two rows of air guide pipes, and a blow-drying assembly is arranged on one side of each vertical frame. The bearing rings on different hooks can be respectively and synchronously electroplated, dried and placed and taken down, the equipment continuously operates, the next electroplating can be carried out without waiting for taking down the bearing after electroplating and drying, the electroplating speed of the bearing rings is effectively improved, and the electroplating of a large number of bearing rings can be quickly completed during the mass production of the bearing.

To provide an optical module that can synchronize a vibration frequency and a swing angle without complicating a system. An optical module including: a double-sided mirror that rotates or undergoes pendulum motion about at least one rotation axis; a plane mirror disposed at an angle of 45 degrees from a horizontal surface on a back surface side of the double-sided mirror; and a uniaxial retroreflective mirror disposed at an angle of 45 degrees from the horizontal surface on a front surface side of the double-sided mirror, in which an axis of retroreflective is perpendicular to the horizontal surface and a normal line of the uniaxial retroreflective mirror.

The invention provides a display device which is small in size and capable of displaying an aerial image with a wide field angle. This aerial image display device (100) is provided with: a display light source (110) provided with an emission surface for emitting an image; a beam splitter (130) disposed so as to face the emission surface of the display light source (110) in parallel; and a pair of retro-reflectors (120-1, 120-2) disposed between the display light source (110) and the beam splitter (130), the pair of retro-reflectors (120-1, 120-2) being disposed so as to be inclined outward with respect to the normal line of the emission surface.

The utility model discloses a weather-proof reflective film, which belongs to the technical field of optical elements and comprises a prism layer, the prism layer comprises a plurality of prism units distributed in an array, each prism unit is of a triangular pyramid structure, and a plurality of layer concave parts are arranged on the peripheral side of each prism unit from the top end in a step shape. The prism units are fixedly provided with extinction materials on the bottom surfaces of the layer concave parts from bottom to top, and the light transmittance of the extinction materials is lower than that of the prism units. According to the weather-proof reflective film provided by the utility model, by arranging the plurality of extinction materials which are arranged at intervals, light path gathering for retroreflection is effectively reduced, the upper limit of light intensity is effectively reduced, and meanwhile, by arranging the inner concave parts, the light paths among the extinction materials are further dispersed, so that the light intensity is improved. And a person is not easy to feel uncomfortable when directly looking at the light spot.