17 results about "Foldscope" patented technology

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.

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).

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.

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.

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.

The invention relates to the technical field of multi-angle hyperspectral imaging systems, in particular to a multi-separation-angle slit light path recombination system, method and equipment and a storage medium. The system comprises a telescope objective module, a multi-slit recombination module and a multi-slit array module which are sequentially distributed along an optical axis, wherein the telescope objective module is used for taking parallel light beams in a field of view at a plurality of separation angles; the multi-slit array module comprises a reference slit and an off-axis slit which are arranged in parallel along the meridian direction; the multi-slit recombination module is used for compressing the off-axis distance between the off-axis slit light path and the reference slit light path in the meridian direction. The multi-slit recombination module comprises a reference folding lens group used for folding a reference slit light path and an off-axis folding lens group used for folding an off-axis slit light path. Spectral information of multiple separation angles can be obtained through a single lens, and use of a large-specification detector and a moving part is avoided while the large width of each observation angle is guaranteed.

The present application relates to multi-angle hyperspectral imaging system technical field, especially to a kind of multi-separation angle slit light path recombination system, method, equipment and storage medium;The system includes telescopic objective module, multi-slit recombination module, multi-slit array module sequentially distributed along optical axis;Wherein: telescopic objective module is used to take in the parallel light beam in multiple separation angle field of view;Multi-slit array module includes reference slit and off-axis slit mutually parallel arrangement along meridian direction;Multi-slit recombination module is used to compress the off-axis distance between off-axis slit light path and reference slit light path along meridian direction;Multi-slit recombination module includes reference folding mirror group for folding reference slit light path and off-axis folding mirror group for folding off-axis slit light path.The present application can obtain multiple separation angle spectral information by single lens, while ensuring each observation angle is substantially wide, avoids the use of large specification detector and moving parts.

A projection system and calibration method therefor relate to a light source configured to emit a light in response to an image data, an illumination optical system configured to steer the light, the illumination optical system including a fold mirror and an integrating rod, a digital micromirror device (DMD) including a plurality of micromirrors respectively configured to reflect the steered light to a predetermined location as on-state light or to reflect the steered light as off-state light to a light dump; determining a deviation between an actual angle of orientation and an expected angle of orientation of a respective micromirror of the plurality of micromirrors; calculating a first amount of rotational adjustment corresponding to the fold mirror and a second amount of lateral adjustment corresponding to the integrating rod, and actuating the fold mirror and integrating rod according to the corresponding first and second amount.

The present invention relates to a single and / or dual laser delivery system attached to an existing ophthalmic operating microscope, comprising of a single and / or dual wavelength laser unit [1]; and a delivery system [5]. The laser unit [1] comprises of a green laser module 532 nm [3] and a yellow laser module 577 nm [4] along with an aiming beam [7] 635 nm. The delivery system comprises of a right-angle prism [5A]: X and Y Galvo assembly [5B] and a focusing lens assembly [5C]. The laser unit passes through a fiber optic cable [6] gets reflected using the right angle prism, gets deflected by the Galvo assembly, enters the focusing lens assembly and gets reflected by a folding mirror [5D] and focused on human eye capsule. The system converges and focuses the laser wavelengths in line with the aiming beam to create a circular pattern to accomplish a pre-measured Capsulorhexis.

A compact and highly accurate optical density measuring apparatus that includes an ellipsoidal mirror and a folding mirror is provided. In the optical density measuring apparatus, the shape of at least a part of the inner surface of a light guiding part is composed of a figure of a part of an ellipsoid E, and a shape of at least a part of another portion of the inner surface of the light guiding part is composed of a figure of a part of a plane or a quadric surface. 60% or more of the area of a light source region of a light emitting part is present in a region Rin, and 60% or more of the area of a light receiving region of a light receiving part is present in a region Rout.

The invention discloses a detection and surveying and mapping integrated optical system, particularly discloses an aviation detection and surveying and mapping integrated optical system, and solves the problem that an existing aviation surveying and mapping photoelectric load cannot meet high-precision and efficient surveying and mapping requirements. The optical system comprises an afocal telescope optical system, a panchromatic wave band optical system and a shortwave infrared wave band optical system. The afocal telescopic optical system comprises a diaphragm, a primary mirror, a secondary mirror, a telescopic folding mirror, a third mirror, a fast reflecting mirror and a spectroscope; light in a target area enters the primary mirror after passing through the diaphragm, reversely penetrates through the diaphragm after being reflected by the primary mirror, enters the secondary mirror, sequentially penetrates through the diaphragm and an inner ring through hole of the primary mirror after being reflected by the secondary mirror, enters the telescopic folding mirror, sequentially passes through the telescopic folding mirror, the third mirror and the quick reflector after being reflected by the telescopic folding mirror, the third mirror and the quick reflector, and enters the spectroscope. The panchromatic wave band optical system is arranged on a reflecting light path of the spectroscope and is used for surveying and mapping; and the short-wave infrared band optical system is arranged on a transmission light path of the spectroscope and is used for realizing detection.

Embodiments of the present disclosure generally relate to metrology systems and metrology methods for measuring waveguides for image quality standards. In at least one embodiment, an optical device metrology system includes a platform, a body, and a light engine positioned within the body and mounted above the platform. The light engine includes a light source, a fold mirror angled relative to the light source, the fold mirror configured to divert a light beam to a platform, one or more lenses or arrays located between the fold mirror and the platform, and a projection lens located between the one or more lenses or arrays and the platform. The system further includes a first detector positioned within the body and mounted above the platform adjacent the light engine, configured to receive a projection beam projected upward from the platform.

The present application relates to the technical field of optical mechanical adjustment, and particularly relates to a folded optical path off-axis three-mirror system adjustment device and method; the folded optical path off-axis three-mirror system adjustment device comprises an interferometer, a theodolite and a compensator mounted on one side of a main mirror incident surface, a first straight edge and a second straight edge are arranged on a bottom plate of the compensator, and the first straight edge and the second straight edge adjacent to each other form a first included angle; a reference structure is connected by the theodolite and a main mirror optical path, and a main mirror optical axis is perpendicular to the first straight edge; three optical axis transmission structures are arranged based on the property of similar triangles; the first optical axis transmission structure makes the flat glass parallel to the first straight edge; the second optical axis transmission structure makes the normal direction of the flat glass coincide with the optical axis of the plane mirror; and the third optical axis transmission structure makes the folding mirror parallel to the second straight edge. The present application obtains the optical axis of the main mirror by using the compensator, and then calibrates the folding mirror through the bottom plate. Then, the adjustment of the misalignment amount is carried out, and the number of misalignment amounts used for adjustment is small.