716 results about "Cylindrical lens" patented technology

In order to solve the problems that the screen size of a common display device is fixed, and when a viewer needs to increase the image size, it is difficult to increase the visual area through the change of the area of a display screen, the invention provides a display device capable of increasing the visual area. The display device capable of enlarging the visual area comprises a display panel, a cylindrical lens grating and a reflector. Direct pixels at the edge position of the display panel are displayed through the projection effect of the cylindrical lens on the pixels, and indirect pixels at the edge position of the display panel are displayed through the reflection effect of the reflector. In the edge area of the screen, a viewer not only can directly view the direct pixels, but also can view the indirect pixels through the reflecting mirror, so that the visual area of the screen is effectively increased.

The utility model discloses a deformable lens, which comprises a first spherical lens group, a second spherical lens group, a first cylindrical lens group, a third spherical lens group, a second cylindrical lens group, a fourth spherical lens group and a twentieth lens which are sequentially arranged from an object space to an image space, the focal lengths of all the lens groups meet the following conditions: 1.4 lt; f (G1-G7) Y / f (G1-G7) Xlt; 1.6); 1lt; 1lt; f (G2) X / f (G1-G4) Xlt; -0.7,-0.7; -2lt;-2lt; f (G3) X / f (G1-G4) Xlt; -1.3,-1.3; 361t; 361t; f (G5) Y / f (G5-G7) Ylt; 24); 0.8 lt; f (G1-G4) X / f (G5-G7) Xlt; 1.2; 1.1 lt; 1.1 lt; f (G1-G4) Y / f (G5-G7) Ylt; and 1.7. The integrated design is adopted, so that the lens is small in size, and meanwhile, the optical performance of high resolution, low respiration, low distortion, 1.5 X high magnification and the like is obtained.

The embodiment of the invention relates to the technical field of semiconductor material processing, in particular to a processing method of a period-adjustable micro-nano oxidation periodic structure, which comprises the following steps: sequentially preparing a substrate, a metal layer and a semiconductor layer from bottom to top by using a physical deposition method to form a substrate-metal layer-semiconductor layer structure film from bottom to top; a light path composed of a femtosecond laser, an optical half-wave plate, a polarization beam splitter prism and a cylindrical lens is built; a femtosecond laser device is used for emitting femtosecond laser in a pulse string mode, after the femtosecond laser sequentially passes through an optical half-wave plate, a polarization beam splitter prism and a cylindrical lens, linear light spots are formed and focused on the surface of a structural film, and a micro-nano oxidation periodic structure is obtained; by changing the number of sub-pulses of the femtosecond laser, regulation and control of the period of the processed micro-nano oxidation periodic structure are realized. According to the method, efficient, economical, batch and accurate preparation of the micro-nano oxidation periodic structure is realized, and the method has a wide industrial application prospect.

The invention discloses a calibration device with a spectrum self-calibration function and a high-resolution spectrum calibration method thereof. The device comprises a narrow-band light source, a broadband light source, an optical fiber isolator, a coupler, an interference system, a multi-way switch, an FP (Fabry-Perot) cavity, a collimator, an orthogonal dispersion system and a computer, wherein the orthogonal dispersion system consists of a cylindrical lens, a reflector, a virtual phase array, a grating, a focusing lens and an industrial camera; according to the device, different light source paths are gated, FP cavity modulation and orthogonal dispersion system light splitting are utilized, and an industrial camera is combined to receive light signals. According to the method, the mapping relation between pixels and wavelengths can be established, the two-dimensional spectrum is compressed into the one-dimensional calibration spectrum through light intensity modulation and normalization processing, the calibration process of the orthogonal dispersion system is simplified, and the measurement precision is improved; and system drift can be compensated in real time through self-checking calibration, and the reliability of a measurement result is ensured, so that accurate calibration and measurement of a high-resolution spectrum can be realized.

The embodiment of the invention provides a head-up display device, a design method and a control method thereof, and a carrier, and relates to the technical field of head-up display. The head-up display device provided by the embodiment of the invention comprises an image source used for generating a left eye image light beam and a right eye image light beam; the lenticular grating comprises at least two lenticular subareas, and each lenticular subarea comprises at least two lenticular lenses; the at least two cylindrical lens subareas comprise a first cylindrical lens subarea and a second cylindrical lens subarea; the image source comprises a plurality of sub-pixels, the sub-pixels comprise a first type of sub-pixels, and the first type of sub-pixels are configured to reduce luminance or extinguish; in both the first lenticular partition and the second lenticular partition, the first lenticular partition includes a first type of sub-pixels. According to the head display device, the design method and the control method thereof, and the carrier provided by the embodiment of the invention, the crosstalk problem can be alleviated, and meanwhile, the problem of resolution reduction caused by sub-pixel extinguishing can be alleviated.

The invention discloses a method and device for photo-thermal amplification and rapid detection of multiple genes and application. An amplification system containing a photo-thermal amplification material is irradiated by a coaxial reflection LED light source outside 405-500nm, and isothermal amplification of a target gene is realized. According to the invention, a large number of single-stranded DNA amplification products are obtained by using asymmetric RPA, and then qualitative and quantitative detection is carried out through photo-thermal test paper. A detection area adopts a sandwich capture amplification product and a photo-thermal signal probe to generate a temperature change signal related to the content of the amplification product, and the gene is quantified according to the temperature change signal. The device comprises an LED light source, a spectroscope, a plano-convex cylindrical lens, a photo-thermal amplification system bracket, a test paper detection bracket and a light-shielding heat-insulating shell. According to the method, the photo-thermal conversion effect of a nano material is utilized, so that portable, rapid and low-cost multi-sample amplification is realized, and the portability limitation of traditional equipment is overcome.

The invention discloses a display screen and a display device capable of realizing any partition naked eye 3D switchable, comprising an upper glass plate and a lower glass plate, a liquid crystal layer arranged between the upper glass plate and the lower glass plate, and a semi-cylindrical lens structure located between the upper glass plate and the liquid crystal layer, the arc-shaped surface of the semi-cylindrical lens structure faces one side of the lower glass plate, the transparent electrode layer covers the upper glass layer or the lower glass layer, the transparent electrode layer is located between the upper glass layer and the lower glass layer, and the TFT array structure is located between the upper glass layer and the lower glass layer. The TFT array structure is located on the side, facing the lower glass plate, of the upper glass plate or the side, facing the upper glass plate, of the lower glass plate, 3D images with the light splitting effect can be displayed in the area where 3D images need to be displayed, the liquid crystal light splitting effect is controlled in the place where the 3D display effect is not needed, and the display effect of the liquid crystal display is improved. Therefore, the 2D display area reaches a full-transparent display mode, and the overall display effect is improved.

An optical sensor for deep space cosmic dust in-situ detection comprises a system shell, a spherical cylindrical lens, a total reflection mirror, a diaphragm, a Powell prism and a semiconductor laser are installed in the system shell, and a laser shaping and collimating module is formed by the Powell prism and the semiconductor laser. A scattered light acquisition and photoelectric conversion module is formed by the Wetton cone array, the photodiode, the signal processing terminal and the band-pass filter, and a laser trap is arranged in front of the detection light curtain emitted from the spherical cylindrical lens; when dust particles entering the sensor from the opening of the shell penetrate through the detection sensitive area, scattered light is generated under laser irradiation, the scattered light passes through the band-pass filter and then is collected and converged by the Wetton cone, and then the scattered light is converted into an electric signal with certain intensity by the photodiode; after the electric signal is amplified and processed by the signal processing terminal, relevant information such as particle size of the particles can be inverted; the method has the advantages of non-contact, no damage to particle dynamic characteristics, large detection area, no additional external bias voltage, high detection precision and the like.

The invention discloses a medium-long-focus full-frame large-magnification deformation lens, which comprises a first lens group, a second lens group, a third lens group, a fourth lens group and an aspherical lens which are sequentially arranged from an object plane to an image plane along an optical axis, and the focal length distribution of each lens of the medium-long-focus full-frame large-magnification deformation lens meets the following conditions: 73mm mlt; f (1-15) Ylt; 77 mm, 44 mlt, 77 mm, 44 mlt; f (1-15) Xlt; the thickness is 49mm, and the thickness is 1.55 lt; f (1-15) Y / f (1-15) Xlt; 1.65, 0.2 lt, 1.65, 0.22 lt; f (2) Y / f (1-8) Ylt; 0.7, 7.8 lt, 0.7, 7.8 lt; f (1-2) Y / f (3-8) Ylt; 23.3, 0.4 lt; 23.3, 23.4; f (1-8) X / f (9-15) Xlt; 1, 1.2, 0.5 lt; f (1-8) Y / f (9-15) Ylt; and 1.5. A first lens group formed by a plurality of spherical lenses, a second lens group formed by a plurality of cylindrical lenses, a third lens group formed by a plurality of spherical lenses and a fourth lens group formed by a plurality of cylindrical lenses are sequentially arranged from an object plane to an image plane along an optical axis; according to the camera lens, the light rays are comprehensively corrected, the horizontally-entering light rays are compressed, and the vertically-entering light rays are maintained, so that the width of a shot picture is increased, a picture with the proportion of 2.4: 1 is obtained, the full frame and high magnification of the camera lens are realized, and the camera lens is compact in structure and low in cost.

The invention relates to a laser beam shaping system and method based on an optical waveguide, and belongs to a beam shaping technology. Comprising a semiconductor laser, a fast axis collimating lens, a slow axis collimating lens, a beam expanding system, a focusing lens and an optical waveguide which are sequentially arranged from left to right, the fast axis collimating lens is a plano-convex cylindrical lens and is used for collimating the fast axis direction of the light beam; the slow axis collimating lens is a plano-convex cylindrical lens and is used for collimating the slow axis direction of the light beam; the beam expanding system comprises a front plano-concave cylindrical lens and a rear plano-convex cylindrical lens and is used for expanding the light beam width in the slow axis direction to be consistent with the light beam width in the fast axis direction; the focusing lens is a plano-convex lens and is used for focusing a light beam to the input end of the optical waveguide; the section of the input end of the optical waveguide is rectangular, the section of the output end is circular, and the optical waveguide is used for shaping rectangular light spots into circular light spots. The light beam is efficiently transmitted in the optical waveguide, and the light beam is gradually shaped into a circular light beam through the transition structure.

The invention discloses a coherent interference-based coaxial transceiving line scanning three-dimensional profile measurement system and method. The system comprises a low-coherence light source; the beam splitter is used for collimating light emitted by the low-coherence light source and then dividing the light into two paths; the measuring light is focused into a linear light beam through the cylindrical lens and is emitted to the surface of the to-be-measured sample, and the measuring light reflected by the surface of the to-be-measured sample returns to the beam splitter along the original path; the reference light is emitted to a reference mirror with a certain inclination angle and is reflected back to the beam splitter through the reference mirror; the measuring light reflected by the surface of the sample to be measured and the reference light reflected by the reference mirror are subjected to beam combination interference through a beam splitter and are imaged to enter a camera for interference pattern acquisition; the signal processing system is used for processing the interference patterns to obtain height distribution of the to-be-measured sample on a line field, and three-dimensional profile measurement of the to-be-measured sample is realized by transversely moving or transversely scanning the to-be-measured sample and overlapping the interference patterns measured at different positions. Therefore, high-efficiency measurement can be realized while the micro-nano precision is kept.

The invention belongs to the field of 3D display, and provides a dynamic eyeball tracking method for naked eye 3D and a tablet personal computer, and the method comprises the steps: obtaining a video frame shot by the tablet personal computer, and carrying out the detection of eye and nose regions of the video frame based on an error learning framework; performing content classification on the eye and nose areas, extracting SIFT features in the eye and nose areas based on a scale invariant feature transform algorithm, and selecting a corresponding supervised descent model according to a content classification result to obtain first coordinates of pupil centers of human eyes; estimating a three-dimensional coordinate of the pupil center according to the 3D face model and the first coordinate, and dynamically adjusting a pixel arrangement mode of a screen of the tablet computer and the position of a cylindrical lens grating based on the three-dimensional coordinate, so that a left eye image and a right eye image projected by the tablet computer are matched with the three-dimensional coordinate of the pupil center; according to the invention, the problem that the naked-eye 3D effect cannot be achieved when the existing naked-eye 3D screen generates ghosting when the position of an observer is not correct enough or moves or the deviation exceeds a certain degree can be solved.

The invention discloses a method and system for generating an ultrafast pulse string with time-varying space-time characteristics, and relates to the technical field of laser pulse control, and the method comprises the following steps: after an incident light pulse is reflected by a first grating and collimated by a first cylindrical lens, the spectral component of the incident light pulse is expanded along the space on the plane where a phase plate is located; realizing time domain positive Fourier transform to form two-dimensional space-spectrum distribution; modulating a phase plate, and performing complex amplitude modulation on the two-dimensional space-spectrum distribution by using the phase plate to obtain a space-spectrum; the modulated space-spectrum passes through a second lens and a second grating to realize time domain inverse Fourier transform to obtain an output pulse; the output pulse is transmitted for a certain distance on the rear surface of the grating to form an ultrafast pulse string with time-varying space-time characteristics, time and space dimensions are regulated and controlled at the same time, more complex space-time characteristics are achieved, and time and space distribution of the pulse is accurately controlled.

The invention provides a solution concentration real-time detection method based on cylindrical lens focusing offset, which comprises the following steps: step A, laser emitted by a laser diode is collimated into parallel light through a plano-convex lens, the parallel light is emitted into a sample cell through a glass window, and the sample cell is used for detecting the concentration of a sample; and then the light is emitted by the cylindrical lens and is imaged on the image sensor. B, the parallel light is imaged into a light spot on the image sensor after being emitted by the cylindrical lens, the image sensor is driven by the stepping motor to move, the minimum light spot is found, the moving distance of the image sensor is recorded, and the solution concentration change is inversed through the moving distance; by introducing a cylindrical lens light path amplification mechanism, the detection precision is remarkably improved, the temperature drift is effectively inhibited, and the defect of insufficient sensitivity in the prior art is overcome.

The collimating cylindrical lens sequentially comprises a first lens with positive focal power and a second lens with positive focal power from an object side to an image side along an optical axis, and the first lens and the second lens are cylindrical lenses; wherein the axial distance from the object side surface of the first lens to the image side surface of the second lens is TD, the sum of the medium thickness of the first lens and the medium thickness of the second lens is sigma CT, and the collimating cylindrical lens meets the condition that TD / sigma CT is larger than 1.5 and smaller than 2.0. According to the invention, a two-dimensional light source scanning at a certain angle on an image plane can be well collimated into parallel light, and the parallel light is emitted on an object plane, so that the problem that a high-performance collimation cylindrical lens capable of being matched with a solid-state scanning laser radar is urgently needed at present is solved; the lens adopts an aspheric surface in the curvature direction to realize correction of various aberrations of light rays and realize a light ray collimation effect; and meanwhile, by reasonably distributing the focal power and the surface type of each lens, the collimation capability of the collimation cylindrical lens is effectively improved, and the high-reliability lens is obtained.

The invention relates to the field of agricultural equipment, and provides an optical weeding system and method. The optical weeding system comprises a base and a solar weeding device, the solar weeding device is arranged on the base and comprises a lighting assembly, a collimating lens, a light guide assembly and a cylindrical lens, the lighting assembly comprises a supporting frame and a Fresnel lens, and the Fresnel lens is arranged on the upper portion of the supporting frame. Sunlight is focused to a focus through the Fresnel lens to form a high-energy light spot, light output by the Fresnel lens is collimated through the collimating lens, and the focused light is output through the cylindrical lens to form a linear high-temperature light spot on the ground; solar energy of renewable clean energy is directly utilized to form a light knife for physical thermal cutting weeding, consumption of non-renewable energy sources is reduced, and the use cost is reduced; due to the fact that optical weeding is adopted, chemical reagents are not needed, and pollution to soil and water sources is avoided.

The invention discloses a parameter calibration method and system of a naked-eye 3D display module, the naked-eye 3D display module comprises a display screen and a cylindrical lens array attached to a light-emitting surface of the display screen, and the method comprises the following steps: 1, obtaining a test image which is an image shot at a target observation point at a fixed position, comprising a left view area and a right view area; 2, determining whether the test image meets a set calibration image condition or not, and controlling the color difference between the first color block and the second color block to be greater than or equal to a color difference threshold value; 3, if not, adjusting the characteristic parameters, and returning to execute the first step; the first step to the third step are executed circularly, and when the display parameters and / or the lens parameters are different, the obtained test images are different; and when the obtained test image meets a calibration image condition, determining calibration parameters of the naked eye 3D display module based on the adjusted feature parameters.

The invention discloses a nonlinear chirped fiber grating preparation structure based on speed regulation and control, and belongs to the field of laser technology and nonlinear optics. Comprising a light source displacement control scheme, a phase mask plate displacement control scheme and a grating inscribing and monitoring scheme. The optical, electrical and mechanical devices comprise a laser light source, a diaphragm, a plano-concave mirror, a plano-convex mirror, a cylindrical lens, an electric control displacement platform, a control program, a signal generator, a function editor, a precise displacement platform, an optical isolator, an optical circulator, a photosensitive optical fiber and an optical fiber analyzer. According to the non-linear chirp fiber grating preparation scheme based on speed regulation and control, the adjustable displacement speed is introduced while the uniform phase mask plate is used, flexible chirp regulation and control are achieved while simple and stable preparation is guaranteed, the preparation scheme of the non-linear chirp tube fiber grating is widened, and the preparation cost is reduced.

Systems include three optical elements arranged along an optical axis each having a different cylinder axis and a variable cylinder refractive power. Collectively, the three elements form a compound optical element having an overall spherical refractive power (SPH), cylinder refractive power (CYL), and cylinder axis (Axis) that can be varied according to a prescription (Rx).

The invention discloses an air-cooled miniature slab laser based on double-end pumping, and belongs to the technical field of solid laser. Wherein the first conduction cooling single bar and the second conduction cooling single bar are arranged at the upper end and the lower end of the lath laser crystal in a staggered manner to form a double-end pumping structure; after the first fast axis collimation cylindrical lens and the second fast axis collimation cylindrical lens respectively collimate the fast axis directions of the first conduction cooling single bar and the second conduction cooling single bar, partial end surfaces are injected into the lath laser crystal; the first resonant cavity reflector and the second resonant cavity reflector are located at the left end and the right end of the lath laser crystal; the laser injected into the slab laser crystal passes through the resonant cavity mirror and then is subjected to multi-pass back-and-forth oscillation between the first resonant cavity reflector and the second resonant cavity reflector to reach the resonant cavity output cavity mirror. The output monopulse energy is greatly improved, the overall electro-optical efficiency is high, and the system compactness is high.

The invention discloses a one-dimensional ultra-wide field-of-view ultra-high spectral resolution dispersion coherent imaging spectrometer, which belongs to the technical field of spectral imaging, and comprises a first microlens array used for obtaining incident light of a one-dimensional ultra-wide field-of-view in a horizontal plane; the plurality of optical fibers are used for transmitting incident light of a one-dimensional ultra-wide field of view; the second micro lens array is used for collimating incident light from each optical fiber into broadband parallel light beams; the grating beam splitter interferometer is used for dispersing the broadband parallel light beams into a plurality of narrow-band parallel light beams with different propagation directions; the cylindrical lens is used for converging the two paths of coherent light of each narrow-band parallel light beam to a target block of the detector, and converging the narrow-band parallel light beams with different propagation directions to different target blocks respectively; and the detector is used for obtaining a continuous broadband ultra-high resolution spectrum according to the two paths of coherent light received by each target block. According to the invention, a one-dimensional ultra-wide field of view is obtained in a horizontal plane, and ultra-high spectral resolution can be obtained.

The invention provides a color dynamic film and a preparation method and application thereof, and belongs to the technical field of optical imaging. The colored dynamic film provided by the invention comprises a colored micro-pattern layer, a bonding layer and a cylindrical lens array layer which are sequentially laminated, the colorized micro-pattern layer comprises a flexible thin film material and a micro-pattern structure which protrudes out of or sinks into the flexible thin film material; the micro-pattern structure is formed by a two-dimensional hole array structure or a columnar array structure; or the micro-pattern structure is formed by filling three-dimensional colloidal microspheres; a difference exists between the period of the micro-pattern structure and the period of the cylindrical lens array layer. According to the invention, the two-dimensional hole array structure or the columnar array structure is used for rasterizing and filling the micro-pattern, or the three-dimensional colloidal microspheres are used for filling to form a three-dimensional photonic crystal structure, the color effect presented by the formed micro-pattern structure is not limited by an observation visual angle, and obvious colored dynamic patterns can be observed in all directions.

The invention discloses a system and method for generating, regulating and controlling a partially coherent space-time light field. The system comprises a pulse shaping assembly composed of a plurality of optical elements and an incident light source used for providing a completely coherent ultrafast pulse light field. An optical element in the pulse shaping assembly comprises a first blazed grating, a first cylindrical lens, a two-dimensional dynamic holographic modulator, a second cylindrical lens and a second blazed grating which are sequentially arranged in the light field propagation direction. The focal lengths of the first cylindrical lens and the second cylindrical lens are the same, and the distance between the adjacent optical elements is equal to the focal lengths of the first cylindrical lens and the second cylindrical lens; the two-dimensional dynamic holographic modulator is used for loading a specific complex amplitude modulation function to reconstruct the spatial-spectral characteristics of the light field. According to the invention, the two-dimensional space-spectrum function of the pulse is dynamically modulated, the generation of the partially coherent space-time wave packet is realized, and the amplitude and structure distribution of the space-time coherence can be designed and regulated as required.

The invention relates to the technical field of 3D display screens, in particular to a naked eye 3D liquid crystal display screen which comprises an outer shell and an inner shell located in the outer shell, a backlight layer is arranged on the innermost layer in the inner shell, and developing layers are sequentially arranged on the outer side of the backlight layer; the developing layer is formed by combining a 2D display layer and a 3D effect layer formed by arranging columnar perspective films so as to enhance the developing effect, and a touch layer and a protective layer are sequentially arranged on the outer side of the developing layer. The developing layer comprises a 2D display layer composed of a lower polaroid, a liquid crystal and an upper polaroid, and a 3D effect layer composed of a display panel and a cylindrical lens grating layer. According to the naked-eye 3D liquid crystal display screen, the 3D display effect can be enhanced, the interaction effect of the display screen can be improved, 3D display work can be better used, and meanwhile long-term efficient use of the display screen can be guaranteed.

The invention provides a multi-focus excitation confocal fluorescence microscopic imaging flow cytometry screening method. The method is characterized in that a laser beam generates three laser beams through a spatial light modulator, and the three laser beams are coherently superposed in a focal plane of a microscope objective to generate a two-dimensional optical lattice light field. And after the other laser beam is shaped by the cylindrical lens, linear laser optical tweezers are realized through the microscope objective, cells to be detected in an imaging detection area of the micro-flow chip are captured, and accurate active optical control on the rotation angle of the cells to be detected is realized. In a cell rotation process, a two-dimensional optical lattice light field rapidly scans in a focal plane at different angles, and a fluorophore in the cell is excited to generate a fluorescence signal. The confocal pinhole array installed at the position conjugate with the focal plane eliminates background fluorescence, a high-spatial-resolution fluorescence image of a three-dimensional structure in the cell is obtained, and cell screening is achieved. The method provided by the invention has the characteristics of high detection rate, high accuracy and the like, and has wide application prospects in the research fields of biology, medicine and life science.

A defect detection method based on laser measurement, which has a simple structure, achieves low cost and is convenient to use, and comprises: obtaining a detection device, wherein the device comprises a laser (1), a first cylindrical lens unit (2), a second cylindrical lens unit (3), a marking unit (4), an operation unit (5), a photoelectric probe (6), and a product conveyor belt (7), and using the first cylindrical lens unit (2) to convert point light emitted by the laser (1) into linear light, wherein the linear light is parallel light; obtaining a product (8) under test, using the product conveyor belt (7) to convey the product (8) under test for detection, using the product conveyor belt (7) to limit the product under test, and enabling the linear light to cover an area under test on the product under test for detection; and performing detection from the time when the linear light illuminates the area under test to the time when the linear light moves beyond the area under test.

A laser processing apparatus includes an energy distribution correcting unit that forms skirt parts of a Gaussian distribution of an energy distribution in a Y-axis direction regarding a laser beam emitted from a laser oscillator into a perpendicular distribution, an imaging lens group composed of two or more lenses that form an image of the beam shape of the laser beam for which the energy distribution has been corrected by the energy distribution correcting unit on the upper surface of the workpiece, and one cylindrical lens that adjusts the energy density in an X-axis direction regarding the laser beam for which the energy distribution has been corrected by the energy distribution correcting unit.

The invention discloses a shadow-line-free laser 3D profile measuring instrument and a measuring method thereof. The measuring method of the measuring instrument comprises the following steps: the double lasers emit two beams of laser with different wavebands, the two beams of laser form line laser through the cylindrical lens, and the line laser is projected on the surface of an object to be measured to form double-color laser rays; the two band-pass narrow-band filters filter light reflected by the surface of an object to be measured, and the filtered line laser is focused on the Bayer array sensor through the imaging lens; the Bayer array sensor collects a line laser contour image and outputs the line laser contour image to the FPGA; the FPGA performs an operation of converting a Bayer format into an RGB format, and extracts information of the two line laser contour images; and the two extracted line laser contour images are fused, texture information is obtained, and an unshielded object 3D morphology and texture map is obtained. By means of the structure that the double lasers are obliquely arranged and the camera is positively arranged, information loss caused by shielding of the surface of the to-be-measured object is eliminated, and measurement is more accurate.

A rapid optical tissue scanner includes: a light source unit for irradiating a sample with a light source beam; a cylindrical lens for transforming the light source beam into a light sheet; a sample mounting unit on which the sample is mounted; an objective lens disposed between the cylindrical lens and the sample mounting unit to irradiate the sample with the light source beam transformed into a light sheet; and a photographing unit for receiving an excitation beam, which is obtained by excitation from the sample, from the objective lens and photographing image information of the sample.

An indication light emitter has higher viewability. A screwing tool includes a motor, a tool holder rotatable with a rotational force generated by the motor, a cylindrical lens between the motor and the tool holder, and a light-emitting element located radially outward from the cylindrical lens to illuminate the cylindrical lens.