105 results about "Collimated light" patented technology

The utility model discloses a kind of non-contact optical coherence elastic imaging endoscope devices, comprising: non-contact ultrasonic excitation and optical detection integrated probe and high-speed sweep frequency laser, the integrated probe includes air-coupled ultrasonic transducer, collimating optical fiber, off-axis parabolic mirror and polymer resin packaging shell, air-coupled ultrasonic transducer diameter is not greater than 2.5 mm, center frequency is not less than 250 kHz, collimating optical fiber is single-mode fiber and emission end integrated collimator is used to produce collimating beam, off-axis parabolic mirror focal length is greater than 7 mm, the polymer resin packaging shell is used to integrally package integrated probe, the polymer resin packaging shell is designed using 3D printing, and it is windowed at the exit end of the off-axis parabolic mirror;The scanning speed of this high-speed sweep frequency laser is 100 kHz, center wavelength 1310 nm, bandwidth 100 nm, synchronous output trigger clock and sampling clock.

A display system includes a display including a plurality of pixels where each pixel includes a plurality of subpixels; and a diffractive off-axis collimation layer disposed on the display. The diffractive off-axis collimation layer includes diffractive regions configured to diffractively transmit light and non- diffractive regions configured to non-diffractively transmit light. The diffractive and non-diffractive regions are arranged relative to the subpixels so that the diffractive off-axis collimation layer at least partially collimates light along a first off-axis direction making an angle of at least 5 degrees with a thickness direction of the display.

The present disclosure provides an optical detection system, comprising: a collimating module configured to generate collimated light; and at least one multi-channel detection module configured to receive the collimated light, wherein each of the at least one multi-channel detection module comprises: a first channel group comprising: a first filter array comprising a plurality of first filters arranged along a first axis; and a first detection component array comprising a plurality of first detection components arranged along a third axis and corresponding one-to-one to the plurality of first filters; and a second channel group comprising: a second filter array comprising a plurality of second filters arranged along a second axis; and a second detection component array comprising a plurality of second detection components arranged along a fourth axis and corresponding one-to-one to the plurality of second filters, wherein an absolute value of a first angle is the same as an absolute value of a second angle, the light propagates in an alternating manner between the first channel group and the second channel group, and the plurality of first filters and the plurality of second filters have different center wavelengths from each other.

The present application improves resolution while suppressing the number of light emitting elements arranged in an optical module. The optical module includes an optical element that makes a light beam emitted from a light emitting element a substantially collimated light beam or a light beam having a prescribed angular width, and a diffractive element that diffracts the light beam and separates the light beam into a plurality of light beams. The diffractive element generates diffracted light in n directions, and an angle θx formed by one of the directions of diffraction and an edge of the direction of arrangement of the light emitting element is tan ‑1 (b / 3a). A diffraction angle of the diffracted light is and an angle difference between two light beams caused by a distance between the light emitting elements of a and b is. n is a natural number, and m is a natural number that does not include an integral multiple of 2n+1.

The present invention provides an end capped optical fiber that can reduce the angular misalignment of the optical axis of a collimated light beam. [Solution] The optical fiber with an end cap comprises an optical fiber and an end cap having a first surface connected to the end face of the optical fiber, a second surface located opposite the first surface, and a side surface connecting the first and second surfaces. The end cap includes a convex lens, the second surface includes the convex lens surface, and the side surface includes an outer surface surrounding the optical axis of the convex lens. The angle formed by each of the two intersecting lines between the virtual plane containing the optical axis and the outer surface with respect to the optical axis changes as the virtual plane rotates once around the optical axis.

A display device includes a light source which provides light, a plurality of first nanostructures which collimates the light from the light source and converts a light path of the light from the light source, a light guide portion which totally reflects light incident thereon from the plurality of first nanostructures in a way such that the light travels from one end to another end thereof, a spatial light modulator which modulates a phase of light incident thereon from the light guide portion and outputs the light having the phase modulated thereby, and a plurality of second nanostructures which collimates light incident thereon from the light guide portion and converts a light path of the light incident thereon to provide the light incident thereon to the spatial light modulator.

In a technique that uses collimated light to measure the position and vibration of an object, the goal is to ensure that the spot position of the collimated light can be reliably captured by a camera. [Solution] The measurement target area 30 formed on the surface of the object 12 includes a first area 31 that scatters incident light and a second area Ra, Rb that reflects light in the exit direction corresponding to the incident direction. Collimated light is irradiated onto the measurement target area 30 of the object 12. As a first measurement, the first area 31 is photographed by a camera 16, and the spot position of the collimated light is measured from the captured image. As a second measurement, reflected light from the second area Ra, Rb is received by a light receiving unit 18, and the vibration of the object 12 is measured using the change in the light reception intensity of the light receiving unit 18.

The application discloses an optical fiber device, a preparation method of the optical fiber device and a coupling device, and belongs to the technical field of micro-nano photonics. The application sequentially arranges a mode field expansion area and a phase modulation area at an exit end of an optical fiber, uses the mode field expansion area to expand a beam mode field diameter, uses a substrate film matched with the mode field expansion area in refractive index and a micro-nano unit with high refractive index to form the phase modulation area, realizes a target phase distribution based on geometric sizes and / or a rotation angle of the micro-nano unit, and then performs phase modulation and wavefront shaping on the expanded beam, so as to output a target light field such as a focused beam, a collimated beam, a Bessel beam or a Bessel beam array. The optical fiber device can realize high coupling efficiency, high alignment tolerance and multi-functional wavefront regulation at the exit end of the optical fiber, can solve the mode field mismatch problem in optical fiber-chip coupling, can reduce system complexity and realize multi-functional integration.

The application discloses a high-precision anti-interference dew point measurement method of a cold mirror based on semiconductor refrigeration. The device used in the measurement method mainly comprises an optical measurement module, a temperature measurement module and a control processing unit. The method cools the mirror surface through a semiconductor refrigerator, and the control processing unit integrates a self-adaptive PID algorithm to dynamically adjust the refrigeration power. The light emitted by a collimated light source is reflected by the mirror surface and is received by a reflected photoelectric sensor. Through the change of reflectivity, the reflected light intensity is dynamically compensated based on a reference light signal to eliminate common-mode interference. The measurement method comprises the following steps: initializing and recording the baseline of multiple light signals; controlling the stepwise cooling of the mirror surface and synchronously monitoring; calculating and processing the light signal in real time, determining the dew starting based on a dynamic threshold; switching to PID control to finely balance the temperature near the dew point, and recording the stable value; correcting and outputting the final dew point value by using a compensation model; stopping the refrigeration and evaporating and resetting the mirror surface by using the residual heat, and entering the next cycle.

Lighting device (100) and automotive lighting comprising: a plurality of lighting elements (12), wherein a first group of lighting elements (12A) is arranged along a first direction (x) and a second group of lighting elements (12B) is arranged along the first direction (x) and arranged next to the first group of lighting elements (12A) along a second direction (y) perpendicular to the first direction (x), a single lens (14) in a distance from the first group of lighting elements (12A) and / or the second group of lighting elements (12B) to collimate light from the first group of lighting elements (12A) and the second group of lighting elements (12B), a cylindrically shaped optical element (10) extending along the first direction (x) placed between the plurality of lighting elements (12) and the lens (14), wherein the optical element (10) has a non-uniform shape.

A spectroscopic camera includes an etalon that transmits light of a wavelength corresponding to a gap dimension of a pair of reflective films; a detachable mount lens; an image sensor; and a relay optical system that relays an intermediate image formed by the mount lens to re-form an image at the image sensor and is adjusted to make light incident on the etalon at a desired angle. The relay optical system includes a first lens group that relays the intermediate image and emits collimated light to make it incident on the etalon, and a second lens group that forms an image of light emitted from the etalon at the image sensor. An image height of the intermediate image and a focal length of the first lens group satisfy E1≤0.27 in an evaluation formula E1 = (L1 / f1).

A multiple-wavelength reflective Raman probe includes a first parabolic mirror, a second parabolic mirror, a third parabolic mirror, and a fourth parabolic mirror. The first parabolic mirror receives a laser light, and reflects as a collimated light beam. The second parabolic mirror receives the collimated light beam, and condenses to a convergent light beam. The third parabolic mirror has a through hole. The convergent light beam passes through the through hole, and is focused on the sample detecting position. The third parabolic mirror also collects the light reflected by the sample detecting position and reflects as a collimated detection light beam. The fourth parabolic mirror collects the detection light beam, and condenses to a detection output light beam. The detection output light beam is focused at a focal point of the fourth parabolic mirror to be collected by a spectrometer.

This invention discloses a three-degree-of-freedom autocollimation angle measurement device and method based on a crosshair reticle, comprising a probe system, a target mirror system, and a calculation system. The probe system emits a collimated beam containing crosshair image information into the target mirror system. The target mirror system separates the collimated beam containing crosshair image information into two reflected beams parallel to the optical axis, each reflecting beam containing crosshair image information. The probe system also receives the two reflected beams parallel to the optical axis and images the crosshair images corresponding to the two reflected beams. The calculation system calculates the pitch and yaw angles of the target based on the initial and current coordinates of the crosshair image corresponding to one reflected beam parallel to the optical axis, and calculates the roll angle of the target based on the initial and current tilt angles of the crosshair image corresponding to the other reflected beam parallel to the optical axis. This invention enables rapid and high-precision three-degree-of-freedom angle measurement of distant targets.

This invention provides a projection device, a projection lighting system, and a lamp. The projection device includes a light source module and an optical module. The light source module includes a light source. The optical module is disposed opposite to the light source module. The optical module includes a second lens and a third lens arranged sequentially in the light emission direction of the light source. The second lens is configured to collimate the light emitted from the light source, and the third lens is configured to shape the light emitted through the second lens to form a light spot of a preset shape. Compared with the prior art, in this invention, the light emitted from the light source enters the second lens, the second lens collimates the light, and the third lens shapes the collimated light emitted through the second lens, thus projecting a light spot of a preset shape.

This utility model relates to a calibration device for an ICP emission spectrometer, which includes a plasma torch. The calibration device includes: a light source emitting a first emitted light; a collimation module collimating the first emitted light to form a second emitted light containing a collimated beam; a switchable beam splitter converting the second emitted light into axial and / or radial optical paths; a first lens assembly optically processing the axial optical path to match the axial emitted light of the plasma torch; and a second lens assembly optically processing the radial optical path to match the radial emitted light of the plasma torch. This calibration device introduces controllable optical signals into the original optical path without altering the internal optical structure, thereby generating a plasma equivalent light field to simulate the spatial position and beam distribution characteristics of axial and radial plasma emission.

According to one embodiment, an apparatus is provided comprising an optical layer (610) for being disposed on a sub-pixel of a plurality of sub-pixels (614), each sub-pixel of the plurality of sub-pixels emitting a light beam and corresponding to a color. Further, the apparatus can comprise the optical layer for combining the light beam of each sub-pixel of the plurality of sub-pixels and / or mixing the color of the light beam of each sub-pixel of the plurality of sub-pixels by expanding the light beam from each sub-pixel of the plurality of sub-pixels to cover an area corresponding to a full pixel pitch. The apparatus can comprise an embodiment in which a beam divergence angle of the combined light beam overlaps at least 80% of a beam divergence angle of each sub-pixel of the plurality of sub-pixels.

The invention relates to an optical calibration system (30), comprising: - a support (32), - an imaging device (34) mounted on the support (32), the imaging device (34) comprising: • a camera comprising an image generation unit and an objective, • a collimation unit suitable to emit a collimated beam convoying an image of a so-called collimation object, the imaging device (34) being selectively switchable between two modes of operation among: • an autocollimation mode in which both the image generation unit and the collimation unit are activated, and • an imagery mode in which only the image generation unit is activated.

A display device includes: a first light source device configured to emit first emission light in a first direction; a second light source device configured to emit second emission light in a second direction; and a liquid crystal panel on which the first and second emission light is incident. The liquid crystal panel is configured to modulate the first emission light and emit the modulated light in the first direction as third emission light corresponding to a first image, and modulate the second emission light to display a second image. The second light source device includes a light source, an optical element on which light-source light emitted from the light source is incident and that converts the light-source light into collimated light, and a prism sheet that refracts, in the second direction, the light-source light emitted from the optical element and emits the refracted light as the second emission light.

The utility model belongs to the technical field of light collector, specifically relates to a light -collecting structure and contain its car light, include: light collector, be provided with light source on light collector, first refracting portion, first refracting portion is located on the middle part of light collector, first refracting portion includes mutually connected collimating section and diffusion part, collimating section is used for collimating light, and diffusion part is used for diffusing light, wherein a part of light is parallelly shot into light collector through collimating section, and another part of light is diffused and shot into light collector through diffusion part, the utility model discloses a first refracting portion is set, makes light diffusion, improves the uniformity of light, and reduces the dark ring of light collector.

The application provides a volume holographic exposure system and a design method of a light power regulation assembly, and relates to the technical field of optics.The volume holographic exposure system comprises a substrate, a first light source assembly, a second light source assembly, a first light power regulation assembly and a second light power regulation assembly; the substrate has a first surface and a second surface, the first surface is used for coating a volume holographic material, the first light source assembly is used for emitting first collimated light to the volume holographic material, and the second light source assembly is used for emitting second collimated light to the volume holographic material; the first light power regulation assembly comprises three first diffraction gratings arranged along a first optical axis in sequence, and the three first diffraction gratings are used for diffracting three kinds of primary color light in the first collimated light in sequence; and the second light power regulation assembly comprises three second diffraction gratings arranged along a second optical axis in sequence, and the three second diffraction gratings are used for diffracting three kinds of primary color light in the second collimated light in sequence.The volume holographic exposure system can control the light power of different wavelengths separately.

This invention relates to experimental systems and methods for research on photodynamic therapy, photothermal therapy, and their combinations. The experimental system includes: an optical irradiation module comprising multiple laser sources, each capable of outputting a collimated beam, which is then combined to form a coaxial optical path and projected onto the surface of the observed object via a beam adjustment component; an optical path position adjustment module including an electric Z-axis displacement mechanism; a temperature monitoring module including an active temperature control substrate, an infrared thermal imager, and a fiber optic temperature probe interface; and a data acquisition and control module configured to: synchronously acquire laser output power, spot area, electric Z-axis position, temperature of the active temperature control substrate, temperature sequences of multiple different regions, and fiber optic temperature probe data, and record the above data with a unified timestamp; calculate power density based on the real-time output power and spot area of ​​the laser sources; and automatically control the laser source to shut off its output when the data from any temperature monitoring channel exceeds a preset safety threshold.

According to one aspect of the present disclosure, a system for determining the orientation of a device is provided, comprising a diffraction grating deployed on the surface of the device. By irradiating the diffraction grating with a collimating light beam, an m-th order light beam and an n-th order light beam are generated. By monitoring the position on the sensor surface where these light beams are detected, orientation information regarding the orientation of the device can be determined. According to one aspect, the diffraction grating is at least locally flat, perpendicular to a first direction at the center point of the diffraction grating, and the diffraction grating includes repeating pattern units in a second direction from the center point and in the direction opposite to the second direction from the center point, with the pattern units at the center point elongated in a third direction. The collimating light source is configured to emit a collimating light beam toward the center point of the diffraction grating.

Provided are an optical waveguide and an optical waveguide sight, relating to optics technical field. In the optical waveguide sight, a light source and a collimating element are sequentially arranged along an in-coupling channel of a non-pupil-expansion optical waveguide. The collimating element is configured to collimate light beam emitted from light source, forming first parallel light beam, which is transmitted to the in-coupling region. The non-pupil-expansion optical waveguide is configured to redirect and transmit the first parallel light beam to an out-coupling region thereof to form second parallel light beam that is emitted to human eyes. The non-pupil-expansion optical waveguide enables efficient transmission and expansion of optical path with compact structure, broadening effective observation field of view while maintaining small footprint. Moreover, precise light-guiding characteristics of the optical waveguide prevents refraction deviations of light when it propagates at edges, reducing chromatic aberration and aiming errors, thereby enhancing display effect.

A mask writing system may include a laser source to generate a laser beam, a multibeam modulator to receive an input laser beam and generate a plurality of modulated laser beams from the input laser beam, a scanner to direct the plurality of modulated laser beams to a mask holder, and a laser beam shaping module, disposed between the laser source and the multibeam modulator. As such, the laser beam shaping module may include a multi-lens system, disposed along a primary beam path. The multi-lens system may include a first lens to receive the laser beam and output a first converging laser beam; a second lens, arranged to receive the first converging laser beam and output a second converging laser beam; and a third lens, arranged to receive the second portion of the laser beam as a diverging beam, and to output a collimated beam to the multibeam modulator.

This application provides an optical module, a display device, a display apparatus, and an electronic device to address the problem that display devices equipped with anti-glare covers struggle to achieve low flicker and high definition. The optical module is applied to the display device, which includes a display panel. The optical module includes a light-diffusing layer and an anti-glare layer sequentially disposed along the light-emitting direction of the display panel. When collimated light is incident perpendicularly, the light intensity distribution generated by the light-diffusing layer satisfies the condition that the light intensity attenuation is less than or equal to a first threshold within a set emission angle range. The light-diffusing layer uniformly mixes the light emitted from the display panel. When the light mixed by the light-diffusing layer enters the anti-glare layer, flickering is avoided. This eliminates the need to increase the haze of the anti-glare layer to suppress flickering, thus ensuring the clarity of the displayed image.

The application relates to a high-beam-expanding-ratio integrated optical ferrule and optical interconnection assembly based on an integrated injection molding process. A shell of a ferrule body is integrally formed by a transparent optical material; an optical fiber access positioning structure, a first 45-degree reflecting surface, a second 45-degree reflecting surface and an aspherical lens array at an out-light end are arranged in the ferrule body; the optical fiber access positioning structure is used for positioning and fixing an incident optical fiber, so that an end face of the incident optical fiber is located at a preset light-in position; the first 45-degree reflecting surface is used for performing first reflection and turning of a light beam emitted by the optical fiber; the second 45-degree reflecting surface is used for performing second reflection and turning of the light beam after the first reflection and turning, so that the light beam propagates towards the aspherical lens array; and the aspherical lens array is used for receiving divergent light after the double-stage reflection and converting the divergent light into collimated light or expanded parallel light output. The application realizes high-beam-expanding-ratio collimated light output of the light beam by integrally injecting and integrating the double-stage 45-degree reflecting surface and the aspherical lens array, so that the effects of simplifying the process, reducing the cost and improving optical interconnection tolerance and connection reliability are achieved.

This application relates to a backlight module and a display module. The backlight module includes: a frame, including a base plate and a side frame disposed on one side of the base plate, the base plate and the side frame forming a cavity; a reflective sheet disposed on one side of the base plate and within the cavity; a light guide plate disposed on the side of the reflective sheet away from the base plate, the side end face of the light guide plate including a first light guide end face, and the inner surface of the side frame located in the cavity including a first frame face opposite to the first light guide end face; a plurality of light sources, at least disposed between the first light guide end face and the first frame face; and a light modulation structure film located on the side of the light guide plate away from the reflective sheet; wherein the light modulation structure film includes at least one of at least a reverse prism film and at least one periodically stacked anti-reflective film, the periodically stacked anti-reflective film including multiple layers of birefringent true zero-order waveplates and multiple layers of non-birefringent material, the birefringent true zero-order waveplates and non-birefringent material layers being alternately disposed. This application can improve the brightness of collimated light.

A foldable substrate has a first portion, a second portion, and a central portion therebetween, wherein a first transition region forms a first average angle with respect to a first central surface region of the central portion. In various aspects, the first average angle is about 176.1° to about 179.9° or about 177.0° to about 179.9°. In various aspects, the polymer angle is about 178.3° to about 179.9° or about 179.1° to about 179.9°. The method includes placing an etching mask above a first main surface of the foldable substrate prior to etching the foldable substrate. In various aspects, the etching mask includes a first polymer layer located between a first barrier layer and the first main surface. In various aspects, the etching mask includes a plurality of inkjet-printed shapes. A method for measuring contrast ratio includes illuminating a transparent device with a collimated beam.

The light-emitting device includes: a light source that emits laser light; a lens that collimates the laser light; and a light-reflecting part that is spaced apart in the direction of travel of the collimated light transmitted through the lens, having a plurality of reflecting surfaces that reflect the collimated light in a direction intersecting the direction of travel, wherein the beam diameter of the reflected light reflected by the plurality of reflecting surfaces is larger than the beam diameter of the collimated light.