24 results about "Oblique reflection" patented technology

The utility model discloses a rotating mirror radar and a cleaning robot, and the rotating mirror radar comprises a base which is fixedly provided with a signal transmitting module and a signal receiving module; the reflecting mirror assembly is rotatably arranged on the base and is provided with a first signal reflecting part and a second signal reflecting part; the signal transmitting module can transmit a first laser beam and a second laser beam, the signal transmitting module is arranged to be capable of transmitting the first laser beam emitted in the horizontal direction and the second laser beam inclining downwards relative to the horizontal plane, and the reflector assembly reflects the first laser beam in the horizontal direction. Distance detection can be carried out in the horizontal direction; the second laser beam is obliquely reflected downwards relative to the horizontal plane, close-range ground obstacle or cliff detection can be carried out, and detection of the two scenes is switched through rotation of the reflector assembly.

This invention provides a washing machine, an automatic dispenser, and a control method thereof. The automatic dispenser uses an ultrasonic generator to emit ultrasonic waves; an upper reflective surface is located above the nozzle; an oblique reflective surface is located below the nozzle. After passing through the oblique reflective surface, the ultrasonic waves form an upward-propagating wave, and after passing through the upper reflective surface, they form a downward-propagating wave. The upward and downward waves superimpose to form a standing wave. The vertical distance between the ultrasonic generator and the upper reflective surface satisfies the resonant cavity condition. The nozzle is located at the acoustic pressure node of the standing wave. The controller acquires the droplet mass that the maximum acoustic levitation force of the ultrasonic wave can support, obtains the dispensing mass, and calculates the target number of dispensing droplets based on the droplet mass that the maximum acoustic levitation force of the ultrasonic wave can support and the dispensing mass. When the counting detector detects that the number of droplets has reached the target number, the nozzle is controlled to stop dispensing droplets. This invention is based on acoustic levitation technology, has a relatively small error, and high dispensing accuracy, offering significant advantages for dispensing concentrated liquids.

An optical system for viewing a sample includes oculars, a slim beam splitter positioned in an optical beam path between the oculars and the sample, and a photosensor. The slim beam splitter includes a non-cubic body having a height that extends along the optical beam path. An angled reflective surface of the slim beam splitter reflects light from the sample towards the photosensor along an outcoupled beam path and transmits light from the sample towards the oculars. The height of the non-cubic body is substantially equal to a diameter of the outcoupled beam path. A display may be configured to output a secondary light beam towards the slim beam splitter in a direction that is orthogonal to the optical beam path. The slim beam splitter may be configured to prevent light from the secondary light beam from being transmitted or reflected towards the photosensor.

The utility model discloses a rotating mirror radar and a cleaning robot, and the rotating mirror radar comprises a base which is fixedly provided with a signal transmitting module and a signal receiving module; the reflecting mirror assembly is rotatably arranged on the base and is provided with a first signal reflecting part and a second signal reflecting part; the signal transmitting module and the reflector assembly are arranged in the mode that the first signal reflecting part can reflect measuring light emitted by the signal transmitting module in the horizontal direction, and the second signal reflecting part can reflect the measuring light emitted by the signal transmitting module downwards in an inclined mode relative to the horizontal plane. The reflector assembly reflects the measurement light emitted by the signal emission module along the horizontal direction, and can carry out distance detection in the horizontal direction. The measuring light emitted by the signal emitting module is reflected downwards in an inclined mode relative to the horizontal plane, ground obstacle measurement or cliff detection can be carried out, and distance measurement work of different targets can be achieved through one set of system.

The utility model relates to the technical field of optical detection, in particular to an AOI detection light source and a detection system. The detection light source comprises a first light source, a second light source and a third light source; part of light emitted by the first light source is condensed by the cylindrical mirror and obliquely reflected by the semi-reflecting and semi-transmitting mirror to form a first light beam; the two groups of second light sources are symmetrically arranged, and light emitted by each group of second light sources is obliquely reflected by the first light guide surface and the second light guide surface in sequence and then converged to form a second light beam; the two third light sources are symmetrically arranged, light emitted by each third light source is obliquely reflected by the third light guide surface and then converged to form a third light beam, and the third light beam is located on the side, away from the first light beam, of the second light beam; the total angle of the first light beam, the second light beam and the third light beam is larger than or equal to 160 degrees. According to the AOI detection light source disclosed by the utility model, due to the unique optical design, light rays up to 160 degrees can be incident to a defect area in a convergent form, so that a camera can conveniently capture defect characteristic information.

The invention relates to an optical unit (10) and a mobile unit (1) comprising such an optical unit (10). The optical unit is a catadioptric optical unit comprising a primary lens (13), a primary mirror (14), and a secondary mirror (15) arranged in the centre of the primary lens (13). Further, the optical unit (10) comprises an inclined mirror (16) arranged to direct the light from the secondary mirror (15) to an image sensor (34). A lens holder (12) for holding the primary lens (13) and the secondary mirror (15) is provided, and an extension mechanism (23) is arranged for moving the lens holder (12), the primary lens (13), and the secondary mirror (15) between a retracted position and an extended position, in which the secondary mirror (15) is farther away from the primary mirror (14). In the extended position, incoming light will pass through the primary lens (13), via the primary mirror (14), the secondary mirror (15), and the inclined mirror (16) to the image sensor (34). An image stabilisation unit (17) is arranged and functions by adjusting the inclination of the inclined mirror (16).

A photonic integrated circuit (PIC) 400A e.g. for LiDAR ranging may be configured to provide a beam scanner comprising an output light beam switchable between a plurality of out-coupling ports (output

This invention discloses an illumination system and an optical detection system suitable for nucleic acid detection devices. The illumination system includes a light source module, a field lens system, an excitation filter wheel, and an illumination prism module. The illumination prism module includes a beam splitter, multiple reflectors, at least two Dowell prisms, and at least two tilting reflectors. The light source module emits a beam to the field lens system for beam straightening and shaping, then filters it via the excitation filter wheel, and finally directs the beam into the beam splitter of the illumination prism module to separate it into at least two beams. The directions of the at least two beams are adjusted by the multiple reflectors, ensuring they pass through the at least two Dowell prisms and then through the at least two tilting reflectors, so that the at least two beams illuminate the sample's illumination area from different directions.

An exposure apparatus includes: an illumination optical system; a spatial light modulator; a projection optical system that illuminates an exposure target with light emitted from the spatial light modulator; and a stage where the exposure target is placed, wherein by the stage moving the exposure target in a predetermined scan direction, the light illuminates the exposure target by the projection optical system scans on the exposure target, the spatial light modulator includes a plurality of mirrors that rotates around a tilt axis extending in a direction orthogonal to both the scan and an optical axis directions of the projection optical system, the mirrors become an ON state by adjusting a tilt of each mirror relative to the scan direction and thereby emit light to the system, and the exposure apparatus includes an angle adjustment mechanism that adjusts a tilt angle of the spatial light modulator relative to the scan direction.

This method includes: causing measurement light to enter a spatial light modulator in which a plurality of tiltable mirrors in a first state are disposed; receiving light from the spatial light modulator; and evaluating the first state on the basis of the relationship between the received light and a reference position.

A photonic integrated circuit (PIC) 400A e.g. for LiDAR ranging may be configured to provide a beam scanner comprising an output light beam switchable between a plurality of out-coupling ports (output waveguides which may include taper sections) at its edge 405, or a plurality of output light beams, such that the out-coupling direction is port-specific. The different out-coupling directions converge to a common point in space where a collimator lens 406 may be placed, allowing the collimator lens to be smaller in size. The output ports 404-1-404-4 are oriented such that chief rays of emitted light converge to the exit location. The edge of the PIC may be curved (Fig. 5A: 505) to match the field curvature of the collimator lens to reduce optical aberrations. A beam scanning device e.g. a tiltable mirror, or an array of such devices or mirrors, may be used downstream of the collimator to scan the light beam in a perpendicular direction for 2D scanning of the light beam.

The invention discloses a semiconductor side pump laser bar inspection device and method, and belongs to the technical field of semiconductor lasers, the semiconductor side pump laser bar inspection device comprises a base, a rotating shaft is fixedly arranged on the base, the rotating shaft is movably connected with an object placing table, the object placing table is used for bearing a side pump laser module, the rotating shaft vertically penetrates through the center of the object placing table, and a reflector is fixedly arranged at the top of the rotating shaft; the reflecting mirror is arranged in an inclined mode, and during inspection, the reflecting mirror can be adjusted to be located at the intersection point position of emergent light of a to-be-detected bar on the inner circumference of the side pump laser module. The borne side pump laser module rotates around a shaft or vertically moves, and is matched with the inclined reflecting mirror arranged at the intersection point of emergent light of the bars on the inner circumference of the module, so that the emergent light of the bars in an annular or polygonal shell structure can be efficiently reflected, a microscope does not need to be directly stretched into the shell, and the working efficiency is improved. Therefore, the assembled bar can be clearly observed, the applicable scene of bar inspection is greatly expanded, and the convenience and feasibility of inspection operation are improved.

To prevent an optical system from becoming large overall. [Solution] A direct virtual image type virtual image display device 100A comprises a display element 11, a first lens 30 onto which image light ML from the display element 11 is incident, a first prism 41 onto which image light ML that has passed through the first lens 30 is incident, a second prism 42 joined to the first prism 41, an inclined mirror portion IM provided at the joint between the first prism 41 and the second prism 42 and reflecting at least a portion of the image light ML guided in the first prism 41, a plano-convex second lens 53 arranged opposite the first outer surface 41c of the first prism 41, and a transmissive mirror 56 formed on the convex surface 53g of the second lens 53 and partially reflecting the image light ML, and the second prism 42 has a polarization absorbing member AP on any surface except the second outer surface 42c facing the outside world.

The invention relates to the technical field of optical detection, in particular to an AOI detection light source and a detection system. The detection light source comprises a first light source, a second light source and a third light source; part of light emitted by the first light source is condensed by the cylindrical mirror and obliquely reflected by the semi-reflecting and semi-transmitting mirror to form a first light beam; the two groups of second light sources are symmetrically arranged, and light emitted by each group of second light sources is obliquely reflected by the first light guide surface and the second light guide surface in sequence and then converged to form a second light beam; the two third light sources are symmetrically arranged, light emitted by each third light source is obliquely reflected by the third light guide surface and then converged to form a third light beam, and the third light beam is located on the side, away from the first light beam, of the second light beam; the total angle of the first light beam, the second light beam and the third light beam is larger than or equal to 160 degrees. According to the AOI detection light source disclosed by the invention, through a unique optical design, light rays up to 160 degrees can be incident to a defect area in a convergent form, so that a camera can conveniently capture defect characteristic information.

A multi-channel scanner that may be used, for example, for a near-eye display is disclosed. A multi-channel scanner angularly scans the light beam, forming an image in the angular domain. The multi-channel scanner includes a light source, a tiltable reflector, and a multi-channel coupler that couples light emitted by the light source to the tiltable reflector, receives reflected light, and couples it back to the tiltable reflector to double a scan angle. The multi-channel coupler then couples the light reflected at least twice from the tiltable reflector to the exit pupil of the scanner. A pupil replication waveguide arranged at the exit pupil of the scanner expands the image in the angular domain. Multiple reflections of the light beam from the tiltable reflector can increase the angular scanning range of the display and the associated field of view without increasing the angular scanning range of the tiltable reflector.

The present invention relates to the field of measuring the refractive index change of liquid crystal optical components caused by radiation effects, and specifically relates to a Michelson interferometer and a method for measuring the refractive index change of liquid crystal optical components. The Michelson interferometer of the present invention is used to realize in-situ testing of the spatial radiation environment effect of liquid crystal optical components. The interferometer is composed of a laser, a collimating beam expander lens, a beam splitter, a horizontal tilt reflector, a vertical reflector, a focusing lens, a liquid crystal device (CCD), and a radiation source. The liquid crystal device is placed between the beam splitter and the vertical reflector. The liquid crystal device is connected to a liquid crystal drive power supply. The vertical reflector is an aluminum plate with a smooth mirror surface on the front and a non-through small hole on the back. Rays are emitted from the radiation source and vertically illuminate the back of the vertical reflector, penetrating the bottom of the small hole to achieve localized irradiation of the liquid crystal. By comparing the distortion of the interference fringes in the CCD with and without irradiation, the refractive index of the irradiated liquid crystal area is calculated.

The present invention relates to an optical waveguide device and a near-eye display device, the optical waveguide device comprising: a waveguide substrate having a first surface and a second surface parallel to each other, an array of diaphragms, and a plurality of diaphragms obliquely arranged between the first surface and the second surface; a grating plate and a sawtooth plate respectively arranged on the first surface or the second surface, with the sawtooth plate being arranged opposite to the grating plate, the sawtooth plate at least comprising a sawtooth reflective surface, the sawtooth reflective surface comprising a plurality of first saw teeth connected in sequence end to end, the first saw teeth at least comprising an inclined reflective surface, and the inclination direction of the inclined reflective surface being the same as the inclination direction of the array of diaphragms; all or part of an incident light beam is transmitted by total reflection between the grating plate and the sawtooth plate, and compared with total reflection transmission only within the waveguide substrate, the direction of the reflected light beam that undergoes total reflection is rotated clockwise by an angle of γ, effectively reducing process difficulty, thereby reducing ghosting, improving light uniformity, and enhancing imaging quality.

Provided is a vehicle lamp that makes it possible to suppress a contrast difference and unevenness in a low-beam light distribution pattern even when the low-beam light distribution pattern is expanded to a lower side.　The vehicle lamp (10) forms a low-beam light distribution pattern (LP) having a cutoff line (CL) by causing light (L) from a light source (11) to enter a lens member (12) as parallel light from an incident portion (13), reflecting the light on a first reflection surface (17), and projecting the light from an emission portion (25) while partially blocking the light by a cutoff formation portion (18). The lens member (12) has a second reflection surface (24) that reflects the light (L) from the first reflection surface (17) to the vicinity of the cutoff formation portion (18). The first reflection surface (17) is a curved surface based on a paraboloid in which the focal point is set in the vicinity of the cutoff formation portion (18). The second reflection surface (24) has a parallel reflection surface portion (34) that is continuous with the cutoff formation portion (18), and an inclined reflection surface portion (35) that is inclined downward while being continuous with the parallel reflection surface portion (34) on the first reflection surface (17) side.

1. Name of the product in this design: LED ceiling light (oblique reflection). 2. Purpose of this design: LED ceiling light (oblique reflection) for indoor lighting. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model provides an infrared receiving assembly and a fan heater with the same. The infrared receiving assembly comprises a housing, which is provided with a reflection channel penetrating through the housing; the infrared receiving head is located on the inner side of the shell, and at least part of the infrared receiving head extends into the reflection channel; wherein the inner surface of the reflection channel comprises at least two inclined reflection surfaces which are oppositely arranged, and the distance between the at least two inclined reflection surfaces is gradually increased in the direction S from the inner side to the outer side of the shell. According to the utility model, the problem in the prior art that the infrared receiving rate of the infrared receiving head installed in the housing is low and the user experience is affected is effectively solved.

An optical system for viewing a sample includes oculars, a slim beam splitter positioned in an optical beam path between the oculars and the sample, and a photosensor. The slim beam splitter includes a non-cubic body having a height that extends along the optical beam path. An angled reflective surface of the slim beam splitter reflects light from the sample towards the photosensor along an outcoupled beam path and transmits light from the sample towards the oculars. The height of the non-cubic body is substantially equal to a diameter of the outcoupled beam path. A display may be configured to output a secondary light beam towards the slim beam splitter in a direction that is orthogonal to the optical beam path. The slim beam splitter may be configured to prevent light from the secondary light beam from being transmitted or reflected towards the photosensor.

The application discloses a corner reflection signal-based corner weld crack identification system and method, belongs to the technical field of tube plate corner weld nondestructive testing, and comprises the following steps: first, initializing and configuring phased array ultrasonic detection parameters, obtaining 0-degree direct reflection and 30-degree oblique reflection scanning signals of a corner weld area and corresponding coordinates; second, constructing a circumferential-depth graph by tomographic sectioning along a sensitive area of a weld root, locking corner reflection candidate signals by comparing the direct reflection and the oblique reflection signals; third, generating an axial-depth graph by tomographic sectioning of the candidate signals along an axial-depth direction, and determining characteristic signals according to positions, amplitudes and depths; and finally, calculating crack sizes through a calibration model, marking crack parameters, and outputting micro-cracks, penetration states and grading marks; the application can accurately identify corner weld root cracks by using corner reflection signals, realize crack positioning, quantification and grading, has high detection precision and strong reliability, and is suitable for efficient detection of tube plate corner weld cracks.

The invention discloses a MEMS mirror (30) for a lithography system (1), comprising a mirror plate (31) displaceable at an inclination angle (W), a carrier plate (32) for carrying the mirror plate (31), a substrate (33), a solid contact (34) coupling the substrate (33) and the carrier plate (32) for tilting the mirror plate (31), and a capacitive sensor (35) having a plurality of electrodes (36, 37) for detecting the inclination angle (W) of the mirror plate (31), wherein an electrically conductive shield plate (38) for reducing the capacitive coupling between the mirror plate (31) and the electrodes (36, 37) of the capacitive sensor (35) is arranged below the mirror plate (31).