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58 results about "Foldscope" patented technology

A Foldscope is an optical microscope that can be assembled from simple components, including a sheet of paper and a lens. It was developed by Manu Prakash and designed to cost less than US$1 to build. It is part of the "frugal science" movement which aims to make cheap and easy tools available for scientific use in the developing world.

PIC-based multichannel transceiver

An optoelectronic apparatus (100, 500) includes a dual folding mirror (114, 510) mounted on a carrier substrate (112, 524) with first and second reflecting surfaces (520, 522) disposed at opposite angles. A plurality of identical photonic integrated circuits (PICs 108, 110, 320, 502, 504, 506, 508) are disposed on the carrier substrate. Each PIC includes an array of optical transceiver cells (314, 400) on a planar substrate with respective edge couplers (406) along an edge of the planar substrate, and an optical distribution tree (320) coupled to convey coherent radiation to the optical transceiver cells. A first PIC is disposed on the carrier substrate such that the edge of the first PIC is in proximity to the first reflecting surface, and a second PIC is rotated by 180° relative to the first PIC such that the edge of the second PIC is in proximity to the second reflecting surface.
Owner:LYTE AI INC

Method for generating high-quality Laguerre-Gaussian vortex light

The invention discloses a method for generating high-quality Laguerre-Gaussian vortex light, which comprises the following steps: based on a V-shaped laser resonant cavity of a concave folded mirror, astigmatism is introduced by utilizing different convergence capacities of the concave folded mirror on a meridian plane and a sagittal plane of a light beam, so that the cylindrical symmetry of the resonant cavity is destroyed, and the high-quality Laguerre-Gaussian vortex light is generated; the influence of the cylindrical symmetry of the laser resonant cavity on the intrinsic mode of the cavity is eliminated, so that the intrinsic mode of the cavity is a Hermite-Gaussian mode, and the generation of an ellipse due-Gaussian mode is inhibited; an off-axis pumping method is adopted, and the laser resonant cavity generates high-order Hermite-Gaussian mode laser; the focusing lens focuses the generated high-order Hermite-Gaussian mode laser, so that the beam waist of the high-order Hermite-Gaussian mode laser is positioned in the center of the astigmatism mode converter; the astigmatism mode converter provides conditions for mode conversion by changing the Gouy phase of the laser mode, and high-quality Laguerre-Gaussian vortex light output is achieved.
Owner:TIANJIN UNIV

Enhanced hybrid LIDAR with high-speed scanning

An optical arrangement for a LIDAR system includes a laser, scanner, fold mirror, lens, and sensors. Adding a wedge-shaped optical element creates an auxiliary field of view, when positioned to overlie an edge portion of the lens. The wedge-shaped optical element may have a variable transparency preventing reception by the sensors of excessive signals from close targets. The sensors may be: a plurality of sensors with unique lengths / widths, arranged to form a linear array; or sensors with the same length / width, but positioned to form an arcuate shape, compensating for an arcuate scan line; or two columns of sensors, one with a field of view in focus at far field positions, and the other in focus at near field positions, correcting for parallax effect / error; or a column of highly sensitive sensors surrounded by a plurality of guard rail sensors having higher immunity to damage from stray laser light.
Owner:RED CREAMERY LLC

Weapon sight

A weapon sight includes a chassis and an optical system. The chassis is coupleable to a firearm. The optical system is coupled to the chassis and includes a light source, a collimator, a mirror, a diffraction grating, and a hologram. The light source is a light emitting diode (LED) that emits light. The collimator receives the light from the light source and reflects the light in parallel rays. The folding mirror receives the light from the collimator and reflects the light in the parallel rays. The diffraction grating receives the light from the folding mirror and diffracts the light. The hologram receives the light from the diffraction grating to output a reticle visible by a user of the weapon sight.
Owner:EOTECH LLC

Mirror folded illumination for compact optical metrology system

Embodiments of the present disclosure generally relate to metrology systems and metrology methods to measure waveguides for image quality standards. In at least one embodiment, an optical device metrology system includes a stage, a body, and a light engine positioned within the body and mounted above the stage. The light engine includes, a light source, a fold mirror angled relative to the light source, the fold mirror is configured to turn a light beam toward the stage, one or more lenses or arrays positioned between the fold mirror and the stage, and a projection lens positioned between the one or more lenses or arrays and the stage. The system further includes, a first detector positioned within the body and mounted above the stage adjacent to the light engine configured to receive the projected light beam projected upwardly from the stage.
Owner:APPLIED MATERIALS INC

Off-axis three-mirror optical system with double folding mirrors

The invention relates to the technical field of reflective optics, in particular to an off-axis three-mirror optical system with double folding mirrors, which comprises a primary mirror adopting a concave reflecting mirror and a secondary mirror adopting a convex reflecting mirror, an intermediate image is formed on an output light path of the secondary mirror, and a first folding mirror is arranged at the position of the intermediate image; the first folding mirror folds the light beam from one side of the incident light beam of the primary mirror to the other side, so that the third mirror receives the light beam; the third mirror of the concave reflecting mirror is matched with the primary mirror and the secondary mirror to correct aberration, and a final imaging light beam is generated; a second folding mirror located on an output light path of the third mirror reflects the light beam again, so that the focal plane is close to and higher than the primary mirror; the focal plane is located in an envelope space of the primary mirror and the third mirror; the diaphragm is arranged in an off-axis mode, and the off-axis amount of the diaphragm is 0.3-0.6 times of the diameter of the aperture. According to the invention, the compactness of the off-axis three-mirror optical system is improved through double-folding front and back split arrangement; through focal plane position optimization, the optimized focal plane is higher than the primary mirror.
Owner:CHANGCHUN TONGSHI PHOTOELECTRIC TECH CO LTD

System and method for extending depth of field for 2D vision system cameras in the presence of moving objects

This invention provides a system and method for enhanced depth of field (DOF) advantageously used in logistics applications, scanning for features and ID codes on objects. It effectively combines a vision system, a glass lens designed for on-axis and Scheimpflug configurations, a variable lens and a mechanical system to adapt the lens to the different configurations without detaching the optics. The optics can be steerable, which allows it to adjust between variable angles so as to optimize the viewing angle to optimize DOF for the object in a Scheimpflug configuration. One, or a plurality, of images can be acquired of the object at one, or differing angle settings, with the entire region of interest clearly imaged. In another implementation, the optical path can include a steerable mirror and a folding mirror overlying the region of interest, which allows different multiple images to be acquired at different locations on the object.
Owner:COGNEX CORP

A device and method for simultaneously realizing clear imaging of different kinds of ions

The application discloses a device capable of simultaneously realizing clear imaging of different kinds of ions, wherein a first aspheric lens, a second aspheric lens and a first dichroic mirror are sequentially arranged, a second mechanical pinhole plate, a second narrowband filter, a fifth aspheric lens and a sixth aspheric lens are sequentially arranged on a reflection light path of the first dichroic mirror, a second folding mirror is adjusted, and fluorescent light is reflected to a second digital camera or is incident to a second photomultiplier tube; a first mechanical pinhole plate, a first narrowband filter, a third aspheric lens and a fourth aspheric lens are sequentially arranged on a transmission light path of the first dichroic mirror, a first folding mirror is adjusted, and fluorescent light is reflected to a first digital camera or is incident to a first photomultiplier tube. The application further discloses a method capable of simultaneously realizing clear imaging of different kinds of ions. The application is integrated on a light surface package board, only needs one vacuum window for imaging and one primary imaging system, is more integrated and simple, and saves research and development cost.
Owner:INNOVATION ACAD FOR PRECISION MEASUREMENT SCI & TECH CAS

Scanning type human eye peripheral aberration measuring system and method based on wavefront sensing

The invention belongs to the technical field of eye vision optics, and relates to a scanning type human eye peripheral aberration measuring system and method based on wavefront sensing. The system comprises a measuring light path, an off-axis scanning structure, a full meridian scanning structure, an echo light beam restraining and folding lens group, a conjugate adjusting structure, a sighting mark module, an aligning and imaging module and a control and communication system. The off-axis scanning structure comprises a galvanometer and a linear displacement mechanism, and through the linkage of the position and the angle of the galvanometer, the incident main light enters the entrance pupil center of the detected eye at different off-axis angles; in the full meridian scanning structure, a rotating table drives a front structure to rotate around a system main shaft; echo beams enter a rear fixed light path through the center of the rotary table via the reflector. According to the system, full meridian, large off-axis angle and programmable path human eye peripheral aberration measurement can be realized under the condition that the head and eyeballs of a subject do not need to move, and the system has the advantages of compact structure, small additional aberration, high measurement precision and efficiency and the like.
Owner:TIANJIN UNIV

Device for obtaining data on field from a non-prepared sample

The present invention provides a device for obtaining data from a sample. This device comprises an external equipment with a laser source, a Raman spectrometer and an external LIBS spectrometer and a handheld probe. An excitation barrel (1) is configured to produce a collimated laser beam, the first folding mirror (2) is arranged to reflect the collimated laser beam and the first dichroic (3) is configured to project the reflected collimated laser beam into a first direction. A LIBS excitation source (6) is configured to produce a pulsed laser beam, a focusable beam expander (7) is configured to produce an expanded laser beam with a modified divergence, so that it focalizes on the same reference plane as the reflected collimated laser beam, the second folding mirror (8) is arranged to reflect the expanded laser beam and the second dichroic (9) is configured to project the reflected expanded laser beam into the first direction. A focuser (4) is arranged in the first direction and is arranged to receive the reflected collimated laser light and the reflected expanded laser beam and focus them on a focusing point contained in the reference plane. The device further comprises a Raman collection barrel (5) and a LIBS collection barrel (10). Finally, an optical component (12) is configured to reflect part of the sample light coming from the focuser (4), a diaphragm (13) is configured to receive the light reflected by the optical component (12) and a camera system is configured to receive the light which passes through the diaphragm (13).
Owner:INST NACIONAL DE TECNICA AEROESPACIAL

A method for assembling a long focal length catadioptric optical system

ActiveCN120469090BOptical axisOptic system
The application belongs to the technical field of precise optical machine adjustment and testing, and provides a long-focus total reflection optical system adjustment method suitable for large aperture, which is used to solve the problem of low adjustment efficiency of long-focus total reflection optical system. The main mirror and the secondary mirror detection area are made by CGH compensator, so that the main mirror and the secondary mirror can be positioned with high precision. The folding mirror and the focusing mirror are fixed according to the optical axis reference, and the three mirrors are combined with computer-aided iterative fine adjustment. By using the application, the adjustment degrees of freedom of the total reflection space camera optical system can be reduced from 30 to 5, the adjustment efficiency is improved, and the high-precision adjustment of the large-aperture long-focus total reflection space camera optical system is realized.
Owner:CHANGGUANG SATELLITE TECH CO LTD

System and method for testing optical proximity fuses

A system (10) for testing a laser proximity fuse (PF) (12) by simulating a closing velocity to a target along a line of sight (14) includes a static spiral surface (16) and a support arrangement (18) for supporting the proximity fuse (12) with the line of sight (14) directed towards an inside of static spiral surface (16). A folding mirror (20) is driven by a drive motor (22) so as to deflect the line of sight (14) towards progressively closer regions of static spiral surface, thereby simulating a closing velocity. The system can be miniaturized by employing converging optics (24). An alternative embodiment employs a shaped rotor (32) to achieve a similar effect.
Owner:RAFAEL ADVANCED DEFENSE SYST LTD

System and method for testing optical proximity fuses

A system (10) for testing a laser proximity fuse (PF) (12) by simulating a closing velocity to a target along a line of sight (14) includes a static spiral surface (16) and a support arrangement (18) for supporting the proximity fuse (12) with the line of sight (14) directed towards an inside of static spiral surface (16). A folding mirror (20) is driven by a drive motor (22) so as to deflect the line of sight (14) towards progressively closer regions of static spiral surface, thereby simulating a closing velocity. The system can be miniaturized by employing converging optics (24). An alternative embodiment employs a shaped rotor (32) to achieve a similar effect.
Owner:RAFAEL ADVANCED DEFENSE SYST LTD

Optical concentration measurement device

To provide a compact, highly accurate optical concentration measurement device with an ellipsoid mirror and a folding mirror.SOLUTION: An optical concentration measurement device has a light guide part in which at least a portion of an inner surface is composed of a figure which is a portion of an ellipsoid E. At least a portion of another part of the inner surface of the light guide part is composed of a figure which is a portion of a plane surface or a quadratic surface. At least 60% of a light-emitting region of a light-emitting part is located in a region Rin, and at least 60% of a light-receiving region of a light-receiving part is located in a region Rout.SELECTED DRAWING: Figure 2
Owner:ASAHI KASEI MICRODEVICES CORP

Fault detection device for narrow space

The utility model discloses a fault probing device in a narrow space. The fault probing device for the narrow space comprises a light supplementing lamp, a multi-face folding mirror and a shell. The light supplementing lamp and the multi-face folding mirror are arranged on the same outer surface of the shell, the multi-face folding mirror comprises a plurality of mirror faces, and the angle between every two adjacent mirror faces is adjustable. And in a position with insufficient light in a narrow space, the light supplement lamp and the multi-surface folding mirror can be used for carrying out multi-angle light supplement on a maintenance position, so that the probing effect of the maintenance position is improved. Moreover, the fault probing device for the narrow space is simple in structure, so that the size of the fault probing device for the narrow space is very small. In the fault maintenance process of the narrow space, the fault probing device in the narrow space can be placed at any position according to maintenance requirements, the probing effect of the maintenance position can be further guaranteed, the fault judgment accuracy and the maintenance accuracy of maintenance personnel are guaranteed, and the maintenance efficiency is improved. Therefore, the maintenance effect and the maintenance efficiency of the equipment in the narrow space can be improved.
Owner:AGRICULTURAL BANK OF CHINA

Method for assembling and adjusting coaxial three-mirror optical system

The invention relates to the field of optical instruments, and discloses a method for adjusting a coaxial three-mirror optical system, which comprises the following steps of: performing comprehensive simulation analysis on a primary mirror system and a secondary mirror system by adopting optical design software, outputting simulation data, and calculating required adjusting parameters and accurately adjusting a secondary mirror by comparing the difference between the simulation data and actual test data. After the primary and secondary mirror system is installed and adjusted, the third mirror and the folding mirror are combined through a mechanical installation piece and installed behind the light path of the primary and secondary mirror system, and it is ensured that the light paths of the primary and secondary mirror system, the third mirror and the folding mirror can be correctly connected. And finally, testing the coaxial three-mirror optical system, and if the test result is qualified, completing the installation and adjustment work of the coaxial three-mirror optical system. According to the installation and adjustment method of the coaxial three-mirror optical system, installation and adjustment of the secondary mirror are optimized, and the problem that the installation and adjustment difficulty is large due to the fact that the secondary mirror has a certain eccentric angle is effectively solved.
Owner:JIHUA LAB

Camera

PendingCN120034725AOphthalmologyImaging quality
The embodiment of the invention provides a camera, which is used for reducing the length of a lens on the premise of not influencing the image quality. The camera provided by the embodiment of the invention comprises a folding lens and a detector. The folding lens comprises a focusing lens group, a folding light path and a convergent lens group, wherein the folding light path is positioned on a light path between the focusing lens group and the convergent lens group. And the focusing lens group is used for converging the light beams. The folded light path is used for changing the optical axis direction of the light beam, and an included angle between a first optical axis from the focusing lens group to the folded light path and a second optical axis from the folded light path to the convergent lens group is greater than 0. The convergent mirror group is used for converging the light beams to the imaging surface of the detector.
Owner:HUAWEI TECH CO LTD

System and method for extending depth of field for 2d vision system cameras in presence of moving objects

To provide a system for enhanced depth of field (DOF) advantageously used in the form of logistics applications for scanning feature elements and ID codes on objects.SOLUTION: The system effectively combines a vision system, a glass lens designed for on-axis and Scheimpflug configurations, a variable lens, and a mechanical system to adapt the lens to the different configurations without detaching the optics. The optics can be steerable allowing adjustment between variable angles so as to optimize the viewing angle to optimize DOF for an object in the Scheimpflug configuration. One or more of images can be acquired from the object at one angle setting or differing angle settings, with the entire region of interest clearly imaged. In another implementation, the optical path can include a steerable mirror and a folding mirror overlying the region of interest, which allows different multiple images to be acquired at different locations on the object.SELECTED DRAWING: Figure 1
Owner:COGNEX CORP

Weapon sight

PCT designated stage expiredWO2025183748A2Sighting devicesTelescopesOptic systemMechanical engineering
A weapon sight includes a chassis and an optical system. The chassis is coupleable to a firearm. The optical system is coupled to the chassis and includes a light source, a collimator, a mirror, a diffraction grating, and a hologram. The light source is a light emitting diode (LED) that emits light. The collimator receives the light from the light source and reflects the light in parallel rays. The folding mirror receives the light from the collimator and reflects the light in the parallel rays. The diffraction grating receives the light from the folding mirror and diffracts the light. The hologram receives the light from the diffraction grating to output a reticle visible by a user of the weapon sight.
Owner:EOTECH LLC

Light path folding lens group, periscopic module and electronic equipment

The utility model discloses a light path folding lens group, a periscopic module and electronic equipment, and belongs to the technical field of camera modules. The light path folding lens group comprises a first prism which comprises a first surface and a second surface, and light rays enter the first prism through transmission of the first surface and are emitted out of the first prism from the second surface after being reflected for multiple times in the first prism; the second prism comprises a third surface and a fourth surface, and light rays enter the second prism through transmission of the third surface and are emitted out of the second prism from the fourth surface after being reflected for multiple times in the second prism; and the transmission super-structure mirror is arranged between the second surface and the third surface, receives and corrects the light rays emitted by the second surface and then projects the light rays onto the third surface. According to the optical path folding lens group, the periscopic module and the electronic equipment provided by the invention, both the long-focus shooting quality and the relatively small overall specification can be considered.
Owner:KUNSHAN QIUTI PHOTOELECTRIC TECH CO LTD

A freeform optical system for folded projection

The present invention discloses a free-form surface optical system for folding projection. The free-form surface optical system includes a display device, a lens group, a folding mirror, and an output mirror. The lens group focuses the light emitted by the display device onto the folding mirror, and the folding mirror folds and transmits the received light onto the output mirror. The output mirror projects the received light onto a screen, and the output mirror is a free-form surface structure. In the system of the present invention, by inserting the folding mirror between the virtual image and the output mirror, the packaging space is saved and the main optical path is shortened. Moreover, by setting the output mirror in a curved surface shape, the output image quality is improved.
Owner:MIANYANG LIANGGU TECH

Telescope and sensor systems and methods

A system comprises a sensor subsystem for imaging an object space, and a telescope for coupling electromagnetic energy from the object space to the sensor subsystem. The system comprises a bypass optical path that bypasses the telescope on the way to the sensor subsystem in order to provide a larger field of view of the object space. The bypass path and the telescope path merge at a merging point between the telescope and the sensor subsystem, and are disjoint upstream of the merging point. A simple bypass configuration is therefore provided, with possibly just a single fold mirror at the merging point. A sensor may form an intermediate image, and a frame is placed at the intermediate image to reject stray radiation and provide a real and accessible intermediate pupil for the sensor. Other features are also provided.
Owner:TELEDYNE FLIR DEFENSE INC

Optical assembly for alignment inspection, optical apparatus including the same, die bonding system and die bonding method using the same

An optical apparatus includes a folding mirror configured to direct first and second illumination lights on first and second alignment marks respectively and reflect first and second reflected lights reflected from the first and second alignment marks in different horizontal directions respectively, first and second lenses arranged respectively in optical paths of the first and second reflected lights reflected from the first and second reflective surfaces of the folding mirror, first and second reflection portions configured to reflect the first and second reflected lights passing through the first and second lenses respectively, and a beam splitter prism configured to divide an illumination light incident through a first surface into the first and second illumination lights and direct to the first and second reflection portions, and transmit the first and second reflected lights reflected by the first and second reflection portions through a second surface.
Owner:SAMSUNG ELECTRONICS CO LTD

Optical measuring device

An optical measuring device includes a first optical system for measuring a first alignment mark of a first object using a first illumination light, and for measuring a second alignment mark of a second object facing the first object using a second illumination light; and a second optical system for measuring the parallelism of the first object and the second object using a reference light and a measuring light. The first optical system includes a first dichroic mirror arranged in the first light path of the first illumination light; a second dichroic mirror arranged in the second light path of the second illumination light; and a folding mirror arranged in the first light path and the second light path. The second optical system includes the first dichroic mirror, the second dichroic mirror, and the folding mirror arranged on a third light path of the measuring light.
Owner:SAMSUNG ELECTRONICS CO LTD

Adjustment method suitable for large-aperture long-focal-length total-reflection type optical system

The invention belongs to the technical field of precise optical machine adjustment testing, and provides an adjustment method suitable for a large-caliber long-focus total reflection type optical system, which is used for solving the problem of low adjustment efficiency of the long-focus total reflection type optical system, and can be used for positioning a primary mirror and a secondary mirror in a high-precision manner by manufacturing primary and secondary mirror detection areas through a CGH compensator. The folding lens and the focusing lens are fixed according to optical axis reference transmission, and the three lenses are iteratively and finely adjusted in combination with computer assistance. According to the invention, the degree of freedom of adjustment of the total-reflection space camera optical system can be reduced from 30 to 5, the adjustment efficiency is improved, and high-precision adjustment of the large-aperture long-focal-length total-reflection space camera optical system is realized.
Owner:CHANGGUANG SATELLITE TECH CO LTD