81 results about "Partial reflection" patented technology

A sensor and method for page-based optical data storage. The sensor includes a partially-reflective mirror, a reflective mirror disposed substantially collinear with and spaced apart from the partially-reflective mirror, and an active layer disposed substantially collinear with and between the partially-reflective mirror and the reflective mirror. The partially-reflective mirror has a first and second side and transmits a portion of light incident on the first side. The reflective mirror reflects light incident on the reflective mirror toward the partially-reflective mirror. The active layer absorbs at least a portion of the light oscillating at the resonant frequency.

This application discloses a deformation screening device and method for industrial containers. The deformation screening device includes: a projection unit, arranged along a first optical axis, for projecting a preset structured optical pattern; a beam splitter, tilted at 45° relative to the first optical axis, capable of reflecting part of the light beam incident upon it and transmitting the other part, so that the structured optical pattern incident upon the beam splitter is reflected along a second optical axis perpendicular to the first optical axis to the industrial container under test; an imaging unit, arranged along a third optical axis collinear with but opposite to the second optical axis, for receiving a distortion detection image returned from the surface of the industrial container under test; and a processing unit configured to determine whether the industrial container under test has deformation defects by comparing the distortion detection image and a distortion reference image. Applying this application eliminates the need for a complex and time-consuming 3D reconstruction process to screen for deformation defects in industrial containers, making it suitable for high-speed online inspection scenarios.

The disclosure provides a visual system, sequentially including a first lens assembly and a second lens assembly from a first side to a second side along an optical axis, the first lens assembly includes a first lens with a positive refractive power, a reflective polarizing element, and a quarter-wave plate; the second lens assembly includes a second lens with a positive refractive power, a partially-reflective element, and a third lens, and the second lens and the third lens are cemented to each other; and the second lens assembly is able to move along the optical axis to cause the visual system to switch between a first state and a second state. A combined focal length fz of the first lens assembly and a focal length fm of the system in the first state satisfy 5.69≤fz / fm≤8.09.

The invention describes a sphere measuring device (10) for optically determining at least one shape parameter (F) of an at least partially reflective sphere (12), wherein the sphere measuring device (10) comprises: a light source (14) for emitting coherent light (16) with a first central wavelength (λ1), a beam splitter (22) arranged to generate measuring light (16.M1) and reference light (16.R1), a measuring arm mirror (24) arranged to reflect at least a portion of the measuring light (16.M1) onto at least a portion of the sphere (12), and a reference arm mirror (30) configured to reflect at least a portion of the reference light (16.R1), wherein the sphere measuring device (10) is configured to superimpose at least a portion of the light (16.R2) reflected by the reference arm mirror (30) with at least a portion of the light reflected by the measuring arm mirror (24). (16.M2) in an interference area (34) such that interference occurs, a detector (40) which is arranged to detect at least one measurement brightness value (I. n ) in at least part of the interference range (34) and is designed such that, based on the measured brightness value (I n ) the at least one shape parameter (F) of the sphere (12) is determinable, wherein the measuring arm mirror (24) has a concave rotational ellipsoid section (26) which is designed such that the sphere (12) can be placed within the rotational ellipsoid section (26) with its center point (M) in a first focal point (B1) of the rotational ellipsoid section (26), namely in a measuring position, and the light source (14) is designed such that a light source point (20) of the light source (14) is located in the second focal point (B2).

This invention provides a multi-directional synchronous measurement system and method based on laser shear speckle interferometry, relating to the field of shear speckle interferometry technology. The system includes a laser, a beam splitter, and an imaging device. The laser beam generated by the laser illuminates the object under test, forming diffuse reflection light. Part of the diffuse reflection light passes sequentially through an imaging objective lens and a Fourier lens, then illuminates the beam splitter, which separates it into transmitted and reflected light. Part of the reflected light is reflected by a mirror and then sequentially passes through an aperture stop, the beam splitter, and a Fourier lens. By separating the mirrors (mirror 1, 2, and 3), aperture stops 1, 2, and 3) into independent modules for individual adjustment, the laser shear speckle technology achieves separation of shearing amount and aperture stop adjustment, thereby ensuring measurement effectiveness. Based on this, combined with a pulsed laser and a gated imaging device, transient or dynamic measurements are achieved, improving measurement accuracy.

This laser device (100) comprises: a housing (1) that encloses a laser gas, which is a laser medium; a resonator (2) that includes a plurality of reflection mirrors, amplifies laser light, and outputs the amplified laser light; a transmission window (6) which serves as a partition wall for separating a space inside the housing (1) from a space outside the housing (1), and through which the laser light output from the resonator (2) passes; and a pair of electrodes (11, 12) that are disposed at an interval in a direction perpendicular to an optical axis (L) of the laser light. The resonator (2) has: a partial reflection mirror (3) that includes a diamond member in at least a portion thereof, and outputs the amplified laser light to the outside; and a total reflection mirror (4) that is disposed at an interval from the partial reflection mirror (3) and reflects the laser light.

An electronic device may include a display panel configured to produce light and a lens assembly that receives the light from the display panel. The lens assembly may include a first lens and a second lens. The second lens may be a removable lens that is configured to be selectively attached to the lens assembly. The lens assembly may also include a partially reflective mirror that is interposed between the first lens and the display panel, a reflective polarizer that is interposed between the first lens and the second lens when the second lens is attached to the lens assembly, and a quarter wave plate that is interposed between the reflective polarizer and the second lens when the second lens element is attached to the lens assembly.

An optical module, a manufacturing method thereof, and a near-eye display device. The optical module has a light incident side and a light-exiting side, and includes a first lens, a partial reflector, a phase retarder, a second lens, a reflective polarizer, and a light-transmissive structure. The reflective polarizer has a reflective axis direction and a transmissive axis direction perpendicular to each other, the light-transmissive structure has a lowest refraction direction, a refractive index of the light-transmissive structure in the lowest refraction direction for linearly polarized light parallel to the lowest refraction direction is lowest, an included angle between the lowest refraction direction and the reflective axis direction is greater than or equal to 70 degrees and less than or equal to 90 degrees, so that the reflective polarizer has a relatively large reflective polarization selectivity ratio.

A reflective waveguide includes a substrate comprising a plurality of partially-reflective prisms and an input hot mirror disposed at one or more partially-reflective prisms of the substrate. The input hot mirror is reflective to infrared light and substantially transmissive to visible light and is configured to incouple infrared light into the reflective waveguide. The substrate further comprises an incoupler configured to incouple display light into the reflective waveguide, an outcoupler comprising a first subset of the plurality of partially-reflective prisms and configured to outcouple the display light from the reflective waveguide, and an exit pupil expander comprising a second subset of the plurality of partially-reflective prisms and configured to guide the display light from the incoupler to the outcoupler.

A shaped reflective polarizer has different maximum sags in different directions and has an interior portion rotationally symmetric about a principle axis and a peripheral portion adjacent the interior portion and rotationally asymmetric about the principle axis. An optical system includes a partial reflector and an optical stack including an optical lens and the shaped reflective polarizer disposed on a curved major surface of the optical lens. The optical lens may have a contoured edge adapted to be placed adjacent an eye of a viewer and substantially conform to the viewer's face.

The anamorphic near-eye display device comprises a spatial light modulator having asymmetric pixels, an input transverse anamorphic lens, an input waveguide that transmits input light to a partial reflection mirror in a first direction, an intermediate waveguide having a reflective lateral anamorphic component positioned to receive light from the partial reflection mirror and provide imaging of the spatial light modulator in a lateral direction, and an extraction waveguide positioned to receive light from the reflective lateral anamorphic component. The reflective extraction element is positioned to extract the imaged light toward the observer's pupil while maintaining the fan directionality of the light rays from the spatial light modulator and the anamorphic imaging system. This provides a thin, transparent, and efficient anamorphic display device for augmented reality and virtual reality displays.

The present invention relates generally to a microtome system (100) for cutting sections from a sample block, wherein the microtome system (100) includes: a sample holder; a blade (110) having a cutting edge (112), wherein the blade (110) includes a fine cutting edge (114.1) and a rough cutting edge (116.1), wherein the cutting edge (112) is at least partially formed by the fine cutting edge (114.1); a blade holder (120); an illumination source (130); and a detector (140); wherein the illumination source (130) is configured to illuminate the gap (136) between the front surface (128) of the sample block (126) and the cutting edge (112), such that the fine cutting edge (114.1) and at least a portion of the rough cutting edge (116.1) are illuminated. The light reflected by the sample block (126) is reflected by the front surface (128) of the sample block (126) to the detector (140), thereby creating an illuminated region, wherein at least a portion of the blade (112) and at least a portion of the image of the blade mirrored by the front surface (128, 428) of the sample block (126) form the boundary of the illuminated region, and wherein the light reflected by the fine blade (114.1) and the light reflected by at least that portion of the rough blade (116.1) have at least the same average illumination intensity, and wherein the slicer system (100) is configured to image the illuminated region by means of the detector (140) and determine the geometric features of the illuminated region based on the imaged illuminated region.

The present invention relates to a device for the measurement of transmittance of liquid samples comprising an emission apparatus, sample chamber, and detection apparatus. The emission apparatus comprises light emitters and a substrate defined by at least partially reflective boundary surfaces and exit points for light from the emitters.

The optical system includes a light guide optical element (LOE) having a pair of parallel main external surfaces that support the propagation of image illumination within the LOE by internal reflection at the main external surfaces. A plurality of mutually parallel partial reflective surfaces are arranged obliquely to the main external surfaces within the combined output region of the LOE, and combine output at least a portion of the image illumination from the LOE toward the eye movement box. In an embodiment, a planar homogenizer is located inside the LOE, parallel to the main external surfaces, and extends at least partially within the combined output region so as to overlap with a portion, but not all, of the mutually parallel partial reflective surfaces. In another embodiment, the LOE includes a second plurality of mutually parallel partial reflective surfaces, and the homogenizer is alternatively arranged in a relationship that overlaps with the second plurality of mutually parallel partial reflective surfaces.

The optical system includes a first optical element comprising a first substrate, a partial reflection coating disposed on a first surface of the first substrate, and a first metamaterial layer disposed on or adjacent to the first surface of the first substrate and having a structure that defines a continuous phase gradient along a first direction parallel to the first surface of the first substrate; and a second optical element comprising a second substrate and a second metamaterial layer disposed on or adjacent to the first surface of the second substrate and having a structure that defines a continuous phase gradient along a second direction parallel to the first surface of the first substrate, wherein at least one surface of the second optical element is curved along the second direction.

An optical system includes a display, a reflective polarizer, a partial reflector, and a light control film. The optical system displays a virtual image of an image emitted by the display after the emitted image undergoes at least one transmission and at least one reflection by the reflective polarizer, at least one reflection by the partial reflector, and at least one transmission by the light control film. The light control film includes an absorbing horizontal polarizer having mutually orthogonal in-plane pass and absorb axes, and an absorbing vertical polarizer including an absorb-axis substantially orthogonal to a plane of the absorbing vertical polarizer.

An LED luminaire comprising an LED array of LED elements and an optical element. The optical element comprises one or more partially reflective or partially transmissive elements positioned normal to the plane of the LED array. In this way, the partially reflective elements create virtual sources or virtual LED elements by reflecting a portion of the light emitted by the LED elements, while allowing the original or "real" LED elements to remain visible by partially transmitting the light.

An optical lens assembly includes a first lens, a reflective polarizing element, a second lens, a partially reflective and partially transmissive element and a third lens arranged in order from an eye side to an image source side, and also includes a phase delay element located between the reflective polarizing element and the partially reflective and partially transmissive element. When specific conditions are satisfied, the weight of the optical lens group can be reduced and the imaging quality can be ensured.

A projection screen includes an optical structure layer, a reflection layer, and a light-shielding layer. The optical structure layer includes an image display portion and a scattering portion that are integrally connected. The reflection layer is disposed on the scattering portion opposite to the image display portion. The light-shielding layer is disposed on the reflection layer opposite to the scattering portion. A method for manufacturing the projection screen includes: forming the optical structure layer including the image display portion and the scattering portion that are integrally connected; and forming the reflection layer and the light-shielding layer. The reflection layer is disposed on the scattering portion opposite to the image display portion. The light-shielding layer is disposed on the reflection layer opposite to the image display portion.

Disclosed is a method for optical sensing, particularly in an underwater environment. The method comprises projecting a light beam (4) onto a scene (10) by means of a projector (3). The scene (10) comprises a medium with an unknown distribution or density of obstacles (5', 5", 5'") and an object (6) to be distinguished. The light beam (4) has a predetermined diameter (16) larger than the obstacles (5', 5", 5'"). The obstacles (5', 5", 5'") are partially transparent and partially reflective to said light beam (4). The method further comprises imaging the reflected light (7', 7", 7'"), by means of optics, on sensing units (14) of an optical sensor (2), wherein each of said sensing units (14) preferably comprises a single photon detector. The method further comprises determining locations of detection (8', 8",8'") of said obstacles (5', 5", 5'") in said scene (10) on said optical sensor (2) during a plurality of adjacent observation windows. The method further comprises constructing, based on said locations of detection (8', 8", 8'"), a depth map of said obstacles (5', 5", 5'") in said scene (10) based on statistics per sensing unit over said plurality of adjacent observation windows. The method further comprises estimating, based on said detection statistics, a reflectivity of at least part of said plurality of particles in a first volume of the scene (10). The method may comprise determining, based on said depth map, the unknown distribution or density of said obstacles (5', 5", 5'") in said scene (10).

A backlight module includes a circuit board, light-emitting elements, an optical element and a reflective element. The light emitting elements are disposed on the circuit board. The light emitting elements are disposed between the optical element and the circuit board. There is no other optical component between the optical element and the light-emitting elements. The optical element has a light guide portion composed of a non-light diffusing material. The reflective element is disposed on the circuit board and is located between the optical element and the circuit board. The reflective element includes a grid portion. The grid portion separates the light emitting elements. The grid portion has openings, and the light-emitting elements are respectively disposed in the openings. A top surface of the grid portion is higher than the light-emitting elements in a first direction, and a gap is between the grid portion and the optical element.

The anamorphic near-eye display device comprises a spatial light modulator having asymmetric pixels, an input transverse anamorphic lens, an input waveguide for transmitting input light to a lateral anamorphic component positioned to provide imaging of the spatial light modulator in the lateral direction, and an extraction waveguide positioned to receive light from the lateral anamorphic component. A partial reflection extraction element is positioned between the rear guide surface and the front guide surface of the extraction waveguide to extract the imaged light toward the observer's pupil while maintaining the fan directionality of the light rays from the spatial light modulator and the anamorphic imaging system. This provides a thin, transparent, and efficient anamorphic display device for augmented reality and virtual reality displays.

A cladding-pumped fiber laser includes a fiber-optic laser resonator and a tapered rod to recycle residual pump light not absorbed by a gain fiber of the laser resonator. The tapered rod includes a proximal end arranged to receive the residual pump light from the gain fiber via a fiber-optic end mirror of the laser resonator, and a distal end, opposite the proximal end, having a reflective coating to at least partly reflect the residual pump laser light in direction back towards the gain fiber. A cross-sectional area of the tapered rod adiabatically increases from a smaller area at the proximal end to a larger area at the distal end, resulting in reduced power density and numerical aperture of the residual pump light at the distal end. The reduced power density allows for recycling of high-power pump light. The reduced numerical aperture is advantageous for the reflective-coating design.

A laser processing device includes: an oscillator that oscillates laser light; a mirror in which second laser light that is another part of laser light is reflected while first laser light that is a part of laser light is transmitted through the mirror to irradiate a processing target portion with second laser light, and first reflected light that is a part of reflected light in which second laser light is reflected by the processing target portion is transmitted through the mirror; an absorption unit that receives and absorbs the first laser light until an amount of the first laser light becomes equal to or less than a predetermined light amount; a sensor unit that measures intensity of the first reflected light; and a quality evaluation unit that outputs an evaluation result representing the quality of the laser processing at the processing target portion based on a measurement result.

The invention belongs to the technical field of connectors, and discloses a connecting terminal, a terminal module and a connector. The connecting terminal comprises a wiring body and an elastic connecting section, the wiring body comprises a first side wall, a second side wall and a connecting wall, the first side wall and the second side wall are both connected with the connecting wall, and the first side wall and the second side wall are arranged at an interval; the elastic connecting section comprises a first electric conductor and a second electric conductor, the first electric conductor is connected to the first side wall, the second electric conductor is connected to the second side wall, the first electric conductor and the second electric conductor are arranged in a spaced mode, and when the first electric conductor abuts against the conductive contact, the first electric conductor and the second electric conductor are separated from each other. The first electric conductor and the second electric conductor abut against each other so as to be conducted. When a signal flows through the connecting terminal, partial reflection in a transition area between the top end and the bottom end is avoided, and good transmission quality of the high-frequency signal is ensured.

A laser diode includes a lateral waveguide and a side waveguide, the lateral waveguide being orthogonal to the side waveguide. The side waveguide includes an active layer located between an n-type waveguide layer and a p-type waveguide layer. The lateral waveguide is defined by an n-type cladding on the n-side and a p-type cladding on the p-side. The side waveguide is defined at a first end by a high reflector (HR) coating and at a second end by a partial reflector (PR) coating along a longitudinal direction. The side waveguide further includes a buried high-order mode suppression layer (HOMSL) disposed below the p-type cladding and within the side waveguide, or on one or both sides of the side waveguide, or a combination thereof. The length of the HOMSL extending longitudinally from the HR surface is less than the distance between the HR surface and the PR surface.

The application relates to a multi-wavelength laser and a router with fast switching of output wavelengths and ports. The technical scheme adopted by the application is as follows: a multi-wavelength laser has an NxN in-cavity wavelength router, any pair of input and output port combinations of which has minimum loss at a certain specific wavelength; a port selection semiconductor optical amplifier has N inputs corresponding to the inputs of the in-cavity wavelength router, one end of the optical amplifier is made into a high reflection or partial reflection surface, and the other end is connected to the input of the in-cavity wavelength router; a wavelength selection semiconductor optical amplifier has N outputs corresponding to the outputs of the in-cavity wavelength router, one end of the optical amplifier is connected to the output of the in-cavity wavelength router, and the other end is provided with a partial reflector; an optical resonant cavity of a certain specific wavelength is formed between the reflection surface of any port selection semiconductor optical amplifier and the partial reflector of any wavelength selection semiconductor optical amplifier.

The application discloses a kind of based on vacuum infiltrating liquid filling's through silicon via depth measurement method and device.The method comprises the following steps: S1: the sample to be measured with through silicon via is pumped out air in hole, liquid medium is introduced to completely fill the bottom of through silicon via, and restore to normal pressure;S2: the light emitted by light source unit is sequentially passed through tube mirror, objective lens and then is illuminated on the sample to be measured, part of the light is reflected on the surface of the sample to be measured, another part of the light is reflected on the bottom of the through silicon via filled with liquid medium, and both parts of the reflected light enter the optical spectrum acquisition unit to obtain the original interference spectrum signal, and the depth of the through silicon via is obtained by processing the original interference spectrum signal;S3: the sample is treated with liquid after measurement.The method removes residual bubbles in the through silicon via hole by vacuum equipment and fills in measuring liquid medium, cooperates with mature through silicon via optical measurement architecture, and realizes accurate measurement of the depth of through silicon via without damaging the sample.

An eyepiece optical system has an optical axis for guiding a light beam between a pupil of a user and a display surface, and includes: a first lens element having, on a display side, a polarizing reflective surface reflecting or transmitting an incident light beam according to polarization of the incident light beam; and a second lens element disposed between the first lens element and the display surface, and having a partial reflection surface reflecting a part of the incident light beam and transmitting a remaining part thereof. The first lens element has, on a pupil side, an aspherical surface including a convex region having a convex shape opposite to the polarizing reflective surface with the optical axis being positioned therein. The aspherical surface satisfies 0.05<SagH / BF<0.25 with a sag amount SagH at a maximum image height of the display surface and a back focus BF of the eyepiece optical system.