466results about "Reflex reflectors" patented technology

To provide a display device with which a decrease in the contrast or the visibility of a video displayed in the air is suppressed.SOLUTION: This display device 100 comprises: a light source 110; a retroreflective member 130 arranged within a range observable from a preset observation range 140 of an observer; and a beam splitter 120 for reflecting light from the light source 110 toward the retroreflective member 130 and allowing light reflected by the retroreflective member 130 to pass through. The positions of the light source 110 and the retroreflective member 130 are determined so that light regularly reflected by the retroreflective member 130 does not enter the observation range 140.SELECTED DRAWING: Figure 3

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.

An imaging device that is capable of causing a change in an aerial image, and can be reduced in size is provided. The imaging device includes, in a housing, a disk-shaped retro-reflection sheet in which a plurality of designs are formed at different positions, an LED light source configured to irradiate the retro-reflection sheet, a beam splitter, and a motor configured to rotate and move the retro-reflection sheet. The retro-reflection sheet is rotated and moved to enable switching of aerial images of the designs irradiated by the LED light source.

A wide-angle, retroreflective real image display system that produces real images that can be viewed and interacted with by a group of people who can move about a space to view the real image. In one embodiment, the display system includes two or more stations each having their own retroreflector, beamsplitter, and displayed image or illuminated object. The stations, and their beamsplitters and retroreflectors are positioned adjacent at angular offsets or rotation angles, e.g., each neighboring or adjacent beamsplitter and retroreflector is rotated about an axis extending through the joining seam. The displayed images or illuminated objects are rotated at similar angles from each other to provide a retroreflective pyramid with co-located real images. In other embodiments, the display system uses a single retroreflector, beamsplitter, and displayed image or illuminated object but adds a pair of curved reflectors with matching shapes and sizes to provide an undistorted retroreflective real image.

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.

A method of forming a lubricant coating, a method of coating a bearing surface with a lubricant coating, and a vehicle including a bearing including a lubricant coating. A substrate, such as a bearing, including a surface and an electrode are immersed in an electrolyte bath. The electrolyte bath includes an aqueous electrolyte solution including sodium metabisulfite (Na2S2O5), sodium molybdate (Na2MoO4·2H2O), a pH modifier, an anionic surfactant, and water. A first pulsed direct current is applied through the aqueous electrolyte solution using a direct current power supply and a molybdenum disulfide (MoS2) layer is formed on the surface of the substrate.

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.

A lighting device has a light source assembly of semiconductor light sources arranged laterally next to one another and a reflector assembly of retroreflectors arranged laterally next to one another. The light source assembly and the reflector assembly form a common lighting region of the lighting device in which an emission of light by means of the light source assembly and a light reflection by means of the reflector assembly can be produced. The semiconductor light sources are not covered by the retroreflectors.

The invention provides an optical anti-counterfeiting element and an optical anti-counterfeiting product. The optical anti-counterfeiting element comprises a base material; the microstructure layer is located on the surface of at least one side of the base material, at least one characteristic straight line is arranged in the plane where the microstructure layer is located, the microstructure layer comprises a plurality of reflection structures in the extending direction of the characteristic straight line, the side, away from the base material, of each reflection structure is provided with a reflection face, and the plane angle of a dihedral angle formed by the reflection face and the surface of the base material is an inclination angle; wherein the inclination angles of all the reflection structures in the direction of the characteristic straight line at least comprise one change period, in one change period, the change of all the inclination angles is formed by superposing main change and secondary change, and when the optical anti-fake element is rotated along a rotating shaft in the plane where the optical anti-fake element is located, the change of all the inclination angles is changed. The optical security element exhibits a global dynamic feature and a localized dynamic feature due to the primary and secondary variations. The problem that dynamic characteristics of an optical anti-counterfeiting element in the prior art are not easy to recognize is solved.

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.

A lighting device comprises a light source arrangement consisting of laterally adjacent semiconductor light sources and a reflector arrangement consisting of laterally adjacent retroreflectors. The light source arrangement and the reflector arrangement form a common illuminating area of ​​the lighting device, within which light emission can be generated by the light source arrangement and light reflection can be generated by the reflector arrangement. The semiconductor light sources are not covered by the retroreflectors.

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 marker comprising: a retro-reflective layer having a first retro-reflectance capability and a border defining a retro-reflective area of the retro-reflective layer. The retro-reflective layer includes a textured surface, a portion of the textured surface having a surface topology such that surface normal vectors positioned across the portion extend from the portion of the textured surface in different directions. A plurality of retro-reflective micro elements are distributed across the textured surface. A portion of the border provides a second retro-reflectance capability lower than the first retro-reflectance capability.

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.

To provide a display device capable of displaying an aerial image at a wide viewing angle.SOLUTION: An aerial video display device 100 according to the present invention includes: a plurality of light sources 110_1, 110_2, 110_3 that output the same video, respectively; a retroreflection sheet 120 including a first retroreflection surface 120_1, a second retroreflection surface 120_2, and a third retroreflection surface 120_3 facing the plurality of light sources; and a beam splitter 130 located so as to face the retroreflection sheet 120. Each of the first, second and third retroreflection surfaces 120_1, 120_2, 120_3 forms therein a plurality of notches 122 for letting the video of the light source 110 pass through or pass by, and a plurality of aerial images 150_1, 150_2, 150_3 corresponding to the plurality of light sources 110_1, 110_2, 110_3 are displayed.SELECTED DRAWING: Figure 3

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.

The present disclosure includes in one instance an optical article comprising a data rich plurality of retroreflective elements that are configured in a spatially defined arrangement, where the plurality of retroreflective elements comprise retroreflective elements having at least two different retroreflective properties, and where data rich means information that is readily machine interpretable. The present disclosure also includes a system comprising the previously mentioned optical article, an optical system, and an inference engine for interpreting and classifying the plurality of retroreflective elements wherein the optical system feeds data to the inference engine.

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).

A device with a retroreflective section. The retroreflective section comprises an outer surface, an inner surface, and several retroreflective microelements. One or more of the several retroreflective microelements comprise multiple reflective surfaces. Each of the several retroreflective microelements extends from the inner surface at a location distinct from the locations of the other retroreflective microelements, and each of the several retroreflective microelements comprises a central axis extending along a direction corresponding to a surface normal of the outer surface.

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 license plate assembly includes a backing and a flexible license plate. The flexible license plate includes plural layers, including a licensing-information layer, in which ink is deposited in the form of alphanumeric characters on an underlying one of the plural layers, the alphanumeric characters providing license information. The flexible license plate optionally includes one or more holograms, and / or watermarks, and / or QR-codes. The flexible license plate is disposed on the backing, which extends beyond the perimeter of the flexible license plate, defining a marginal region. In some embodiments, plural indices are disposed in the marginal region to facilitate alignment of flexible license plate during installation thereof on a motor vehicle.

The present invention addresses the problem of providing a display device capable of changing an aerial image and capable of being reduced in size. A display device (100) according to the present invention includes, inside a housing (110), a disc-shaped retroreflective sheet (120) in which a plurality of patterns (P) are formed at different positions, an LED light source (140) that irradiates the retroreflective sheet (120), a beam splitter (130), and a motor (150) that rotates and moves the retroreflective sheet (120). An aerial image (Q) of the pattern (P) irradiated by the LED light source (140) can be switched by rotating and moving the retroreflective sheet.

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.