54 results about "Dichroic prism" patented technology

The utility model discloses a monocular telescopic laser range finder with a novel focusing function, which comprises a telescopic optical system, and the telescopic optical system comprises an objective lens group, an inner focusing lens, a beam splitter prism group, an LCD (Liquid Crystal Display) and an eyepiece group which are sequentially arranged along an optical axis L from a scene side to an eye side, the objective lens group, the inner focusing lens, the beam splitter prism group, the LCD and the eyepiece group are installed in a shell, the eyepiece group can move left and right along an optical axis L so as to adjust the distance between the eyepiece group and the LCD, people with different eyesight can clearly watch images displayed on the LCD, the inner focusing lens is additionally arranged between the objective lens group and the beam splitter prism group, and the lens group can be used for adjusting the distance between the eyepiece group and the LCD. The inner focusing lens can move left and right along the optical axis L so that sceneries at different distances can be imaged on the LCD, the inner focusing lens is driven by the driving mechanism, two functions of adjusting the distance between the eyepiece group and the LCD and focusing and imaging the sceneries at different distances on the LCD are realized by adopting two sets of independent mechanisms, the two functions do not interfere with each other, and the implementation is easy.

The invention discloses a projection display system and near-to-eye display equipment. The projection display system comprises a beam splitter prism, a display element and an imaging assembly. The beam splitter prism is matched with a reflector, a field lens and a single lens in the imaging assembly, and light in the projection display system is turned. Light emitted by the display element enters the beam splitter prism after passing through the field lens and is transmitted to the reflector by the beam splitter prism, the reflector reflects the light, and the reflected light enters the beam splitter prism again, is reflected to the single lens by the beam splitter prism and then is emitted from the light emitting side of the projection display system. Therefore, the imaging light path is compressed, the size of the projection display system is effectively reduced, and the miniaturization of the projection display system is realized.

The invention discloses a photoetching alignment system and method, and belongs to the field of photoetching machine alignment. In order to solve the problem that an existing photoetching machine alignment system cannot give consideration to both efficiency and precision, the invention provides a photoetching alignment system which comprises a light source, a light path assembly and a collection assembly; wherein the light path assembly comprises a first lens group, a second lens group and a beam splitter prism, the first lens group and the second lens group are arranged on the same side of the alignment mark, and the beam splitter prism is arranged between the first lens group and the second lens group; wherein the first lens group is used for receiving light emitted by the second lens group; a third lens group is detachably arranged between the first lens group and the beam splitter prism, and the equivalent focal length formed by the focal length of the third lens group and the focal length of the first lens group is larger than the focal length of the first lens group. According to the invention, switching of the alignment system between a high magnification and a low magnification is realized by adding the third lens group, so that rapid identification of an alignment mark is realized under the low magnification, high-resolution image collection of the alignment mark is realized under the high magnification, and the precision of the alignment system is ensured.

A method for adjusting a Doppler asymmetric spatial heterodyne interferometer belongs to the technical field of interference spectrums, and aims to solve the problem that an existing Doppler asymmetric spatial heterodyne interferometer is large in overall adjustment error, and the method comprises the steps that a front lens, a rear lens and a collimating lens are installed and corrected in parallel, and a centering instrument detects the adjustment state of the lenses; the reflex mirror is installed and adjusted by using the reference reflector; after the calibration is completed, carrying out complete machine assembly and calibration on a reflex mirror assembly, a beam splitter prism, an optical filter, an interference module and a camera on a load mounting plate, finely adjusting the reflex mirror assembly to ensure that the signal light enters a light path in a collimating manner, and then adjusting a collimating lens reflector to ensure that the calibration light enters the light path in a parallel manner; and adjusting the camera position to obtain clear imaging. By adopting the system integrated installation and adjustment method, the front lens, the rear lens and the collimating lens can be installed and adjusted in parallel, the installation and adjustment efficiency is improved, the whole machine installation and adjustment are carried out with the other parts after the installation and adjustment are completed, an optical path is integrally designed to ensure that optical axes of all elements are not deviated, and the influence of installation errors is reduced, so that high-quality interference fringes are obtained.

The invention discloses an underwater multi-modal data acquisition device and an image enhancement method, and belongs to the technical field of image enhancement and restoration. Wherein the data acquisition device comprises a beam splitter prism, an event camera, a polarization camera, an edge computer and a control logic module; the two beams of light split by the beam splitter prism are respectively incident to the event camera and the polarization camera at the same visual angle; the event camera is used for generating event data of an underwater target scene; the polarization camera is used for generating polarization data of the underwater target scene at different polarization angles; the edge computer stores and analyzes the event data and the polarization data at different polarization angles by using an image enhancement method to obtain a final underwater target scene image; the control logic module is used for sending control instructions to the event camera and the polarization camera. Through the data acquisition device and the image enhancement method based on the data acquisition device, the adaptability and generalization ability of image processing in a changeable underwater environment are improved.

The invention relates to an optical path calibration system and method. The system comprises a calibration sheet; the illumination assembly is used for illuminating the calibration sheet; the calibration sheet is placed between the illumination assembly and the first objective lens, and the calibration sheet is located in a front focal plane of the first objective lens; the beam splitter prism is located on the side, away from the calibration piece, of the first objective lens and used for receiving the emergent light beam of the first objective lens to form a first reflection light beam and a first transmission light beam, the first reflection light beam enters the first light path assembly to be imaged, and the first transmission light beam enters the second light path assembly to be imaged. By adopting the system, two light paths can be directly coupled by adopting a coaxial interconnection mode, and the deviation of the optical axes of the upper light path and the lower light path can be better processed in light path alignment.

The present invention discloses an interactive physics teaching spectrometer and an interactive teaching system based on the spectrometer. The interactive physics teaching spectrometer includes a spectrometer and an intelligent device. The light emitted by the slit device is changed into parallel light by changing the axial position of the second lens of the collimator. A beam splitter prism is arranged in the telescope to divide the parallel light into a first light path and a second light path, and images are formed in the eyepiece of the telescope and the first camera device above the telescope respectively. The first camera device is connected to the intelligent device and the collected first image is displayed and calibrated on the intelligent device, thereby reducing the difficulty of operation and improving the learning efficiency. The interactive teaching system adopts the above-mentioned interactive physics teaching spectrometer, and is respectively arranged in a teacher-end unit and at least one student-end unit. A macroscopic observation camera assembly is also arranged in the teacher-end unit and the student-end unit to shoot the operation steps of the operator in real time. The teacher-end unit and the student-end unit are connected to realize teaching interaction.

A measurement system for detecting deep-hole surface topography based on low-coherence interferometry (LCI) can include a detection part and an autocollimation system. The detection part includes a white light interferometric system, which specifically includes a 1550 nm amplified spontaneous emission (ASE) broadband light source, a first reflector, a first beam splitting prism, a second reflector, and a reference reflector that are arranged in sequence, where a to-be-measured deep-hole and a near-infrared camera are respectively arranged at two sides of the first beam splitting prism, and a conical prism is disposed inside the to-be-measured deep-hole. The autocollimation system is disposed between the to-be-measured deep-hole and the first beam-splitting prism. The autocollimation system includes a 630 nm light source, a dichroic prism, a second beam-splitting prism, a third reflector, and a quadrant detector that are arranged in sequence.

An image pickup module includes: a color separation prism that separates incident light into light beams and includes emission surfaces configured to emit the light beams in different directions; and image pickup elements provided corresponding to the emission surfaces. The image pickup element includes a facing surface facing the emission surface and including an image pickup region and an outer peripheral region outside the image pickup region, and the image pickup element is fixed to the color separation prism with an adhesive interposed between the outer peripheral region and the emission surface. At least one of the emission surfaces includes a distance increasing portion that faces the outer peripheral region and is formed such that a facing distance from the distance increasing portion to the outer peripheral region is greater than a facing distance from the at least one of the emission surfaces to the image pickup region.

The utility model relates to the field of camera modules, and discloses a beam splitter prism double-chip camera module, which comprises a lens assembly, the lens assembly comprises a lens and a mounting seat for fixing the lens, one side of the lens assembly is provided with a receiving part, and the receiving part comprises a first prism, a second prism and a sensor group. The sensor group comprises at least one RGB image sensor and at least one infrared image sensor, the cross section of the first prism is in a right triangle shape and is a light intensifier, and visible light in light entering the lens penetrates through the first prism and the second prism to the RGB image sensor for imaging; the invisible light entering the lens is transmitted to the infrared image sensor for imaging through the first prism and the second prism. The utility model provides a camera module capable of improving the quality of a picture shot by a telephoto lens in an environment with sufficient light.

A wearable heads-up display (WHUD) reduces the prevalence of visual artifacts by employing a projector with a combiner including a plurality of combiner elements such as dichroic prisms. The projector is configured with one or more features that 1) reduce the amount of stray light generated at the combiner 2) change the path of the stray light so that the stray light is unable to exit the projector and thus is unable to create visual artifacts, or any combination thereof. By reducing the stray light that is generated and by changing the path of the stray light as described herein, the likelihood that a user will see a visual artifact is reduced, thus improving the user experience with the WHUD system.

The invention provides an active safety detection system for the service status of a glass curtain wall, comprising a detection device, wherein the detection device comprises a camera, a laser stroboscopic lighting box, a laser controller, an electronic control box, an industrial computer, a piezoelectric ceramic, a first lens, a second lens, a dichroic prism, a first reflector, a second reflector and a third lens; the first reflector forms a certain small angle with an optical axis; the electronic control box outputs a sinusoidal signal modulation signal to generate an ultrasonic wave to excite a wall, so that a glass curtain wall to be tested installed on the wall forms vibration; the laser controller is used to control the laser stroboscopic lighting box to generate a stroboscopic light with the same frequency as the vibration formed on the glass curtain wall to be tested to illuminate the glass curtain wall to be tested; light reflected by the glass curtain wall to be tested passes through a 4f system formed by the first lens and the second lens, and is incident on the dichroic prism and then is divided into two first and second sub-beams; the first and second sub-beams are respectively reflected by the first and second reflectors and converged through the third lens to interfere.

The utility model provides an optical cement positioning device for a beam splitter prism, which is used for positioning and matching the inclined side surfaces of two right-angle prisms to form the beam splitter prism, and comprises a pressing assembly, an optical cement positioning assembly and an optical cement positioning assembly, the first split part is provided with a first V-shaped groove, and the first V-shaped groove is used for accommodating and positioning a rectangular prism; the second split part is provided with a second V-shaped groove, and the second V-shaped groove is used for accommodating and positioning the other rectangular prism; the first split part and the second split part are oppositely arranged on the pressing assembly, an opening of the first V-shaped groove right faces an opening of the second V-shaped groove, and the width of the opening of the first V-shaped groove and the width of the opening of the second V-shaped groove are both smaller than the size of the long side of the inclined side face of the rectangular prism. The first split part and the second split part are driven by the pressing assembly to be close to each other. The problems that in the prior art, the quality of optical cement of the produced beam splitter prism is uneven, and the size is prone to deviation are solved.

The projection exposure apparatus (10) comprises: a mask mark illumination light source (21) capable of irradiating a mask mark (MM) with exposure light itself or first alignment light (L1) having substantially the same wavelength as the exposure light; and an alignment unit (30) having a workpiece mark illumination light source (31) capable of irradiating a workpiece mark (WM) with second alignment light (L2) having a different wavelength from the exposure light, an imaging device (32), and an imaging optical system (40). The imaging optical system (40) comprises: a first dichroic prism (41) for synthesizing the first alignment light (L1) and light from the workpiece mark (WM) and emitting the resultant light to the imaging device (32); and an optical path length changing optical system (42) for branching and converging the first alignment light (L1) so that the optical positional relationships of the images (MMI) of the workpiece mark (WM) and the mask mark (MM) relative to the imaging device (32) are equal. Thus, a projection exposure apparatus and a projection exposure method capable of high-precision alignment even in a small-sized exposure area can be provided.

A projection device includes a dichroic prism, a first self-luminous display device, a second self-luminous display device, a third self-luminous display device, and a projection optical system. The dichroic prism has a first surface, a second surface, a third surface, and a fourth surface, and is configured to emit combined image light from the fourth surface. The first self-luminous display device is configured to use light of a first wavelength to emit first image light to the first surface. The second self-luminous display device is configured to use light of a second wavelength to emit second image light to the second surface. The third self-luminous display device is configured to use light of a third wavelength to emit third image light to the third surface. The projection optical system is configured to project, onto a projection target, the combined image light emitted from the dichroic prism.

The invention provides an intelligent recommendation method for building a color separation prism optical system, and belongs to the technical field of intelligent recommendation, and the method comprises the steps: obtaining dominant and implicit granularity features of an optical demand, and building an optical feature matrix after correlation mining; establishing an optical feature priority dynamic attenuation function, hierarchically splitting matrix features through a hierarchical encoder, and mapping the matrix features to a component semantic space in combination with an optical component knowledge graph; inputting a mapping result into a matching model built by an optical component heterogeneous graph neural network, and obtaining a component recommendation combination by taking light splitting precision, component compatibility and working condition adaptability as core optimization targets; and performing parameter correction and optimal value calculation on each combination, and screening a final recommendation combination to complete system establishment. According to the method, through deep excavation of explicit and implicit features, dynamic priority adjustment and multi-constraint component matching, the building precision, stability and adaptability of the color separation prism optical system are improved, meanwhile, the building efficiency is remarkably improved, and personalized requirements under complex scenes are met.

The embodiment of the invention provides a color separation prism optical system and a camera device, the color separation prism optical system comprises a pre-processing module and a color separation module, the pre-processing module is used for carrying out filtering and shaping pre-processing on incident light to obtain light beams to be subjected to color separation; the color separation module at least comprises a first color separation prism, a second color separation prism and a third color separation prism, the first surface of the first color separation prism is vertically arranged, the third surface of the first color separation prism and the second color separation prism are arranged at an air interval, and the first color separation prism, the second color separation prism and the third color separation prism carry out light splitting treatment on light beams to be subjected to color separation; light beams of different colors are output from the first color separation prism, the second color separation prism and the third color separation prism, incident light is decomposed into blue light, red light and green light through the color separation prism optical system, all monochromatic light has high light transmittance, the influence of stray light of the system on the imaging quality can be effectively reduced, and the light splitting accuracy can be guaranteed.

The invention provides a time division and space division combined imaging method and system. The system is composed of an image acquisition unit, an image processing unit, an imaging light source module, a transmission line, a central control unit and the like. The image acquisition unit is composed of two image sensors and a beam splitter prism with a band-pass filter, and the light source module uses a four-color LED light source to output light sources of four wave bands. The central control unit generates a control signal to control the light source to emit combined light of different wave bands and controls the image processing unit to obtain four images of different wave bands by obtaining image data transmitted by the image acquisition unit and carrying out odd-even frame separation on the images, and the image processing unit outputs the images after carrying out ISP processing on the four images of different wave bands. The imaging function is achieved, the image color restoration effect is good, different spectral images can be accurately separated, and due to the fact that the two image sensors are used, noise is relatively low after long-time operation, and the process implementation difficulty is low.

To prevent the appearance of a cross line derived from an optically imperfect part of a cross dichroic prism that combines rays of video light from a plurality of display panels, thereby increasing brightness.SOLUTION: A virtual image display device comprises: a first projection optical system 21a that collimates first video light from a first display panel 11a that emits first video light ML1; a second projection optical system 21b that collimates fourth video light ML2 emitted from a composition optical system 18 that combines second video light MLb emitted from a second display panel 11b and third color video light MLc emitted from a third display panel 11c; a light guide plate group 51 that guides the rays of the first, second, and third video light; first and second incident diffraction optical systems 51b, 52b that make the rays of first and fourth video light incident on the light guide plate group 51; and an output diffraction optical system 51c that emits the rays of first and fourth video light so that they overlap each other. An optical path from the first projection optical system to the first incident diffraction optical system, and an optical path from the second projection optical system to the second incident diffraction optical system are independent of each other.SELECTED DRAWING: Figure 13

A high brightness optical engine device includes at least one long wavelength red light source having a peak wavelength longer than 630 nm, at least one green wavelength light source, and at least one blue wavelength light source. Further, long wavelength red light may be combined with short wavelength red light and green / blue light into a coaxial optical path by at least one beam combiner, such as a wedge dichroscope, X-plate dichroscope, or dichroic light combining prism. A 3-channel / 4-channel / 5-channel optical engine device and a hybrid laser LED optical engine device are disclosed that include at least one long wavelength red light source, one blue light source, and one fluorescence-converted green light source combined by a dichroic mirror with an X-plate dichroic mirror, a wedge dichroic mirror, or a dichroic prism, and the optical expansion amount is not increased, so that the high-brightness optical engine output up to 5000lm can be realized.

The invention relates to the technical field of laser micro-nano processing, and discloses a real-time in-situ monitoring imaging method for pulse laser processing, which comprises the following steps of: a, monitoring femtosecond laser processing in real time by using a high-speed holographic single-exposure compression imaging system and a high-speed video single-exposure compression imaging system; b, the laser is subjected to beam splitting through a beam splitter prism, and the laser is guided to the surface of the sample for three-dimensional shape micro-nano machining; and c, quickly coding the image information of the surface of the sample by using a digital micromirror device (DMD). According to the real-time in-situ monitoring imaging method for pulse laser processing, the high-speed two-dimensional image and the high-speed three-dimensional shape information of the processed material can be obtained at the same time, ultra-fast imaging is achieved in a low-cost mode, real-time imaging can be conducted on femtosecond laser processing, the sample is monitored in situ, and the real-time monitoring and imaging effect is achieved. The imaging system is independent and can reconstruct a low-frame-rate image into a high-frame-rate dynamic video, and the storage space is saved.

A unique multiband spectrum solar cell implemented using a cross dichroic prism with the capability to separate incident solar radiation into three visible or infrared spectral components or bands using two dichroic filters is described. Inexpensive thin film solar cells can be deposited directly onto the prism outer surfaces acting as a substrate. The operational spectrum combined by three cells can be designed to cover most of the visible light and infrared (300 nm to 1100 nm) regions providing maximized power output. Manufacture of an elongated (length extended) version is described to increase photovoltaic surface area and create a sub module with space efficient packing into an array supporting a flat panel form factor. Finally, a complete solar panel system is described based upon an array of sub modules combined with power conversion electronics.

A display device includes: a first self-light-emitting panel; a second self-light-emitting panel; a cross dichroic prism configured to cause first image light and second image light to exit as image light of combined light, the first image light exiting from the first self-light-emitting panel and entering, the second image light exiting from the second self-light-emitting panel and entering; a first polarizing plate provided at an exit side of the first self-light-emitting panel; a second polarizing plate provided at an exit side of the second self-light-emitting panel; and a light-guiding optical system including a polarizing mirror and configured to deflect the image light of the combined light. Polarizing axes of the first polarizing plate and the second polarizing plate and a polarizing axis of the polarizing mirror are perpendicular to or parallel to an intersecting axis of the cross dichroic prism.

The utility model relates to a lens detection device, in particular to a lens detection device capable of automatically calculating lens microsphere power and micro-column power. The utility model aims to solve the problems that the error is large when a lens is observed and detected by human eyes, the requirement on professional skills of operators is high when a focal length instrument is used for detecting the lens, and the focal length instrument is high in price and difficult to popularize and apply. In the utility model, a light source, a collimating lens group, a collecting lens, a beam splitter prism and a sensor are sequentially arranged in a straight line from left to right, a sample to be tested is arranged between the collimating lens group and the collecting lens, the signal output end of the sensor is connected with the signal input end of a computer, and a closed-loop light source receiver is arranged below the beam splitter prism. A focusing light spot of the beam splitter prism irradiates on the closed-loop light source receiver, and the closed-loop light source receiver is connected with the light source through the analog signal light source synchronous control panel. The utility model belongs to the technical field of lens detection.

The embodiment of the utility model provides an image double-imaging device which comprises an image device and a movable mechanical structure connected with the image device. The image device comprises a lens, a beam splitter prism group, a first display and a second display. The beam splitter prism group is arranged above the lens to receive an image light path of the lens, and the beam splitter prism group comprises a beam splitter prism, a first reflector and a second reflector. The first display is arranged above the first reflector and is configured to receive the first reflection image light path and convert the first reflection image light path into a first image signal. The second display is arranged above the second reflector and is configured to receive the second reflection image light path and convert the second reflection image light path into a second image signal. Therefore, more comfortable experience is provided for a user when the user uses the image dual-imaging equipment.

This makes it easier to design filters when setting steep cutoff characteristics, suppresses the degradation of spatial resolution and the occurrence of crosstalk between channels, and makes the device more compact. The dichroic prism 10a and N (N is an integer of 2 or more) imaging plates 11a and the like are provided, and the dichroic prism 10a generates N different spectral characteristics D for wavelength components contained in an incident light beam 2. (1) (λ)~D (N) The nth (n is an integer between 1 and N) of the N imaging plates is a set of M n Type (M n is 2 or moreM n (an integer less than or equal to) are arranged at the corresponding pixels, and in the n-th imaging plate, M n The mth filter (m is 1 or more) n (an integer less than or equal to T m (n) (λ), D (n) (λ)T m (n) (λ) has different spectral properties for different ordered pairs (m,n).

Provided is a novel imaging device capable of appropriately acquiring a fluorescence image and a reflected light image of an object. The imaging device (2) is provided with: a stage (21) for holding an object; a first emission unit (3) that emits first emission light, which is ultraviolet light; a second emission unit (4) that emits second emission light, which is light having a wavelength region different from that of the ultraviolet light; a cross-shaped dichroic prism (5), which is a quadrangular prism having first to fourth side surfaces (51, 54), and which emits the first emission light from a third side surface (53) to the first side surface and guides the first emission light to an imaging region (90) on an object, and emits the second emission light from the third side surface (53) to the imaging region and guides the second emission light from the third side surface (53) to the imaging region; and an imaging unit (7) that receives fluorescent light generated in the imaging region when the first emission light is irradiated to the imaging region, and that receives reflected light of the second emission light in the imaging region when the second emission light is irradiated to the imaging region.

The utility model relates to a particle scattered light signal acquisition system which comprises a photoelectric detector, a beam splitter prism, a camera, a particle sample injector, a lens and a laser. Light emitted by the laser irradiates the particle sample injector through the converging lens, the beam splitter prism is placed in the transmission direction, one part of light penetrates through the beam splitter prism and is collected by the photoelectric detector, and the other part of light is reflected by the beam splitter prism and is collected by the camera. When particles pass through the particle sample injector, scattered light is generated, one part of the scattered light is collected by the photoelectric detector, and the other part of the scattered light is collected by the camera. On the basis that the photoelectric detector is used for collecting optical signals, an optical path for collecting the optical signals by using the camera is added, the minimum detection radius of the camera detector can reach 30 microns or even smaller, and small-angle scattered light which cannot be collected by the photoelectric detector can be collected under the condition that the focal length of the lens is not changed, so that the particle detection upper limit is improved.

The embodiment of the invention provides an optical machine module and optical projection equipment. Wherein the ray machine module comprises a front diaphragm, a projection lens, an Xcube color combination prism and an image source which are arranged in sequence; the projection lens comprises four aspherical lenses, a first lens, a second lens, a third lens and a fourth lens are sequentially arranged in the direction from the front diaphragm to the Xcube color combination prism, and the projection lens has positive focal power; the image source comprises a red muLED panel, a green muLED panel and a blue muLED panel which are used for emitting red light, green light and blue light respectively. The Xcube color combination prism is configured to perform color combination processing on red, green and blue light rays from the image source so as to form a full-color image; the pixel size Pixel Size, the angular resolution PPD and the diagonal field of view DFOV of the image source meet the condition that Pixel Size * PPD * DFOV is larger than or equal to 2.0 and smaller than or equal to 8.0.

The embodiment of the invention provides a color separation prism assembly gluing device and method, and the device comprises a pedestal which is fixed on an optical platform, the pedestal is provided with an accommodation groove for accommodating a first prism, and the bottom of the accommodation groove is provided with a hollow groove; the first mounting limiting assembly is fixedly connected with the base; the second mounting and limiting assembly is detachably connected with the base, and the second mounting and limiting assembly and the first mounting and limiting assembly are used for assisting in mounting and limiting the first prism, the second prism and the third prism; the first prism is contained in the containing groove of the base, damage to the bottom edge of the first prism is avoided by arranging the hollowed-out groove, the first prism, the second prism and the third prism are installed and limited in an auxiliary mode by arranging the first installation limiting assembly and the second installation limiting assembly, the gluing precision between the prisms is guaranteed, and the gluing yield is improved.