181 results about "Catoptrics" patented technology

According to the displacement modulation and optical assistance-based SERF atom magnetometer magnetic imaging method, an SERF atom magnetometer integrated with a magnetic flux guider is used as a magnetic sensor, and low-frequency magnetic field modulation is introduced to the magnetic sensor by controlling a to-be-tested sample to perform periodic infinitesimal displacement in the sensitive direction of the magnetic sensor; the modulation signal is demodulated by combining a phase-locked amplification technology, and a magnetic response signal subjected to phase-locked demodulation at each spatial position is extracted; constructing a magnetic response matrix through two-dimensional track scanning of micron-order step pitch; an image acquisition module and a reflection optical assembly are introduced for spatial registration so as to monitor the relative position in real time, and the visibility and controllability of the magnetic imaging process are guaranteed; the point-by-point detection of fT-level weak magnetic signals can be realized on the premise that an array structure is not needed; the low-frequency noise interference can be effectively inhibited, the stability and definition of direct-current and low-frequency magnetic field imaging are improved, and the method is suitable for high-resolution space imaging application of weak magnetic sources such as magnetic domain structures, nervous tissue slices and ancient rock samples.

The invention relates to a three-waveband off-axis reflective optical system with view field switching and focusing functions. Belongs to the photoelectric technical field. Multi-band common-caliber imaging is realized by adopting an off-axis two-reflection-path form, imaging information can be continuously obtained day and night all day, laser emitting and receiving capabilities are considered, and the device has functions of positioning aiming, laser guiding and the like. Large and small field-of-view switching imaging is realized through switching-in and switching-out of the secondary mirror, and the system has the capability of carrying out rapid search in a large field-of-view range and carrying out accurate identification and tracking in a small field-of-view range; the auto-collimation focusing of the optical system is realized by switching the position of the focusing mirror and arranging the focusing system, the system is ensured to be clear in imaging under the use conditions of different atmospheric pressures, temperature changes and photographing distances, and the system is suitable for accurate aiming and detection of a target under various complex and severe working conditions. The total reflection optical system is free of chromatic aberration, free of blocking, compact in structure and high in system integration degree, and the requirement for functional diversification of a photoelectric system is met.

The invention discloses a transparent glass pose detection method and system based on multi-modal data and a glass grabbing method, and relates to the technical field of glass pose detection. Geometric distortion characteristics of a glass contour are captured by using a camera, a relative pose relationship between the geometric distortion characteristics and a camera plane is analyzed, and a mechanical arm is driven to be roughly adjusted to a roughly parallel pose; based on distance information collected by an ultrasonic sensor array, a glass plane equation is fitted through space geometric solution, the normal vector direction and distance parameters of glass are accurately obtained, and closed-loop fine adjustment of the pose of the mechanical arm is achieved. The detection bottleneck that a transparent medium is difficult to reflect an optical signal is broken through, high-precision pose detection can be realized without installing auxiliary equipment on the surface of the glass, and the damage of a contact mark to the surface of the glass is avoided. The detection reliability is remarkably improved through multi-modal data complementation, meanwhile, a low-cost sensor is adopted to replace high-precision laser equipment, and industrial-grade precision and economical efficiency are both achieved.

A method is proposed for correcting an optical system having at least one reflective optical element for grazing incidence of radiation of an operating wavelength from the EUV wavelength range with a reflection layer on a substrate, wherein an actual value of an optical property of the optical system is determined and compared with a target value of this optical property and, if the actual value deviates from the target value, a specification of the at least one reflective optical element is defined such that, with appropriate correction of the reflective optical element, the optical system achieves this target value of the optical property, wherein the at least one reflective optical element is corrected such that it achieves the target value and / or the at least one reflective optical element is replaced by another reflective optical element for grazing incidence of the defined specification.In order to correct the at least one reflective optical element, its reflection layer can be doped, the structure of the reflection layer can be changed, a metastable layer can be provided in the reflective optical element which is converted into a metastable state, or a coating can be applied to the reflection layer.

The invention relates to a system (100) for measuring at least one chemical composition of a flowing fluid of an electrochemical generator system, the measuring system comprising: a light source (111) generating a light beam; a two-pass measurement unit (120) comprising an inlet opening (121) configured to let the fluid into, an outlet opening configured to let the fluid out, and two windows placed on the fluid path, the windows positioned to face each other transverse to a primary optical axis of the fluid flow and configured to transmit the light beam; a reflective optical device (130) positioned to reflect the light beam in a direction in which the fluid flows through the window; and a Raman spectrometer (112) configured to receive the light beam to detect a Raman signal emitted by the flowing fluid and to derive therefrom a measurement of at least one chemical component of the flowing fluid.

The invention relates to a reflection optical unit (1) for focusing electromagnetic radiation (300) onto a focal plane (100), comprising at least the following components: - a central stop (12) which is arranged on an optical axis (200) of the reflection optical unit (1) and is designed to prevent electromagnetic beams (300) that are radiated into the reflection optical unit (1) along the optical axis (200) from propagating parallel to the optical axis (200), - an X-ray lens (11) having a tube (11-1) which extends at least between the central stop (12) and the focal plane (100) along the optical axis (200) of the reflection optical unit (1) and delimits a first volume (V1) radially around the optical axis (200), such that electrons (e-) generated by electromagnetic radiation in the first volume (V1) are shielded, wherein the tube (11-2) together with the central stop (12) forms a ring-shaped aperture (18), and - a solid window (13) which delimits the first volume (V1) toward the focal plane (100) and which peripherally terminates flush with the tube (11-2), wherein the solid window (13) is configured such that electrons generated by electromagnetic radiation in the first volume (V1) are shielded from the focal plane (100) by the solid window (13).

The invention relates to a method for treating a reflective optical element (1) for the VUV wavelength range having an aluminum surface (3). The treatment of the reflective optical element (1) comprises irradiating the reflective optical element (1) with a hydrogen plasma jet (10) to remove the aluminum oxide layer (4) formed on the aluminum surface (3). The invention also relates to a reflective optical element (1) for use in the VUV wavelength range treated by such a method, and to an optical arrangement comprising at least one such optical element (1).

A method for operating an optical system, such as in the FUV / VUV wavelength range, wherein the optical system comprises at least one reflective optical element having a metallic surface to which a metal fluoride layer is applied, and wherein the method includes irradiating the optical element with radiation, such as in the FUV / VUV wavelength range. In the method, the optical system is operated under oxidizing ambient conditions of the optical element during a first time interval, and under fluorinating ambient conditions of the optical element during a second time interval. The first time interval follows the second time interval, or the second time interval follows the first time interval. Optionally, the optical system is operated alternately under oxidizing ambient conditions of the optical element and under fluorinating ambient conditions of the optical element. The disclosure also relates to an optical system.

An optical sensor device configured for use in combination with a fluid flowing through a tubing, the optical sensor device includes a light source configured to emit a light, with at least a portion of the light being exposed to a fluid in the tubing and reflected, an optical sensor configured to receive at least a portion of the reflected light and analyze at least a portion of the received reflected light to determine a reflectance measurement, and a controller configured to correlate the reflectance measurement to an input particulate level and generate an output indicative of the fluid flow rate corresponding to the reflectance measurement. Also disclosed is a method of optically measuring fluid flow rate in a fluid processing system including optically monitoring fluid flow through a transparent portion of a tubing by measuring light reflectance of particles in the fluid.

The invention discloses an air suspension imaging optical system based on polarized light control and a reflection optical structure. The air suspension imaging optical system comprises an image source assembly; a polarization light splitting module, a polarization state conversion module and a reflection module; linearly polarized light emitted by the image source assembly is sequentially reflected or transmitted by the polarization beam splitting module, enters the polarization state conversion module to change the polarization state, is focused by the reflection module, returns, is converted into linearly polarized light through the polarization state conversion module again, and is transmitted or reflected through the polarization beam splitting assembly. A naked eye visible suspension real image without a physical medium is formed in the imaging area; through the above structure, the image light realizes high-efficiency light path turn-back and direction selection through a polarization control path, high-luminous-efficiency and high-quality aerial imaging is realized, and finally, an aerial real image which is visible to naked eyes and free of a medium is formed at a specific spatial position in the air; the system does not need to depend on a traditional imaging medium, and has the advantages of compact structure, high luminous efficiency utilization rate and good imaging brightness and definition.

A reflective optical element (101) for grazing incidence of radiation with a working wavelength from the EUV wavelength range is proposed, comprising a reflective layer (107) on a substrate (103), wherein a filter layer (105) is arranged between the reflective layer (107) and the substrate (103), the filter layer (105) having a larger real part of the refractive index in the DUV wavelength range than the reflective layer (107).

To provide a compact, high-performance catadioptric optical system. [Solution] The optical system comprises, in order of light passage from the object side, a primary mirror section consisting of an aspherical concave mirror with its concave surface facing the object side, a secondary mirror section arranged on the object side of the primary mirror section and consisting of an aspherical convex mirror with its convex surface facing the image side, and a refractive system arranged on the image side of the secondary mirror section, the refractive system comprising a front group with positive refractive power and a rear group with negative refractive power separated by a maximum air gap, the refractive system comprising at least five lenses, where PG is the Petzval sum of the refractive system obtained by normalizing the focal length of each surface by the focal length of the entire system, and PM is the Petzval sum of the reflective system obtained by normalizing the focal length of each surface by the focal length of the entire system, 0.6<|PG / PM|<1.2…(1) If the refractive power of the refractive system is φG and the refractive power of the entire system is φ0, then 0.05<|φG / φ0|<1.5…(2) 7 <PM<20…(3) It is characterized by satisfying the conditions (1), (2), and (3).

A method for manufacturing a reflective optical element for a working wavelength, particularly in the EUV wavelength range, is proposed, comprising the following steps: - Application of a multilayer system (125) consisting of alternating layers of materials with different refractive indices at the working wavelength onto a first substrate (121); - Removal of the first substrate (121) from the multilayer system (125); - Applying the multilayer system (125) to a second substrate (129) such that the layer applied first to the first substrate (121) is located furthest away from the second substrate (129). Alternatively, a second substrate can first be applied to the multilayer system, and then the first substrate can be removed. This allows a reflective optical element with increased real maximum reflectivity at the operating wavelength to be obtained.

This invention provides a reflective optical structure for LED backlighting, relating to the field of LED backlighting technology. It includes a backlight frame and a backplate disposed inside the bottom of the backlight frame. A reflective sheet is adhered and fixed to the outer wall of the top of the backplate, reflecting the light source acting on its upper surface upwards. This invention makes the backplate at the bottom of the backlight frame movable and adds a novel distance fine-tuning device, improving practicality and adaptability. Through the cooperation of a fine-tuning screw and an internal threaded sleeve, and guided by a movable stabilizing guide rod, it achieves precise adjustment of the spacing between core components, driving the backplate, reflective sheet, and light guide plate to move stably, optimizing light effects and improving luminous quality. A cross-shaped fixing bracket and an outer frame provide support, enhancing stability. An anti-detachment structure prevents components from falling off and being damaged by over-adjustment. The device improves adaptability and maintainability, adapting to different LCD panels, reducing maintenance costs, and also improving light utilization, brightness, and energy efficiency.

The invention discloses precise image measurement equipment and method based on laser measurement, and relates to the field of laser measurement, and the measurement equipment comprises a multi-axis motion platform, a measurement probe and a control system. The measuring probe is of a probe-shaped structure capable of penetrating into a measured inner cavity and is installed at the tail end of the Z axis of the multi-axis motion platform, and a confocal laser sensor and a lateral microscopic vision system are integrated in the measuring probe. The lateral microscopic vision system comprises a miniature image sensor, a miniature lens module and a lateral projection light source, and the optical axis of the lateral microscopic vision system is turned back through a reflection optical element, so that the effective sight direction of the lateral microscopic vision system is perpendicular to the axis direction of the measuring probe. According to the invention, through the design of the integrated miniature measuring probe, the shielding and depth-of-field limitation are overcome, and the synchronous and high-precision data acquisition of the inner side wall and the bottom of the deep hole with a high depth-diameter ratio and a step structure is realized, so that the complete three-dimensional shape of the inner cavity is reconstructed, the contour features are completely captured, and the precise measurement requirement is realized.

The embodiment of the utility model provides a wide-angle lens, a shooting device and a movable platform. The wide-angle lens comprises a first lens group with negative focal power, a reflection optical element and a second lens group with positive focal power which are sequentially arranged from an object side to an image side along an optical axis, the first lens group comprises at least two negative lenses, the second lens group comprises at least five lenses, and the wide-angle lens satisfies the following conditions: 14lt; tTL / flt; 17; 90 degree lt; omega; wherein TTL is the distance on the optical axis from the object side surface of the lens closest to the object side to the imaging surface when an infinite object is focused, f is the overall focal length of the wide-angle lens, and omega is the maximum angle of the incident light of the lens closest to the object side. According to the embodiment of the utility model, the occurrence risk of ghosting and glare can be reduced, the spherical aberration can be well corrected, the lens size miniaturization can be realized while a larger field angle is ensured, and the imaging quality can be improved.

A laser system comprising reflective optical elements to reflect a laser beam, the reflective optical elements arranged to form a beam path for the laser beam. The laser system comprises a vacuum environment. At least one of the reflective optical elements is particularly arranged in the vacuum environment and mounted on a substrate of the laser system, The laser system comprises a first volume which is maintained under a pressure different from a surrounding atmospheric pressure and, in particular, is purged with a gas. The laser system further comprises pressure detection means arranged to detect a decrease and / or an increase in pressure in the first volume comprised in the substrate.

The utility model provides a long-optical-path multi-reflection type oxygen concentration detection device which is used for solving the technical problems that an existing oxygen concentration detection device is low in identifiability and not high in sensitivity. The device comprises a laser transmit-receive optical system, a controller and a drive control unit, the controller is connected with the drive control unit, the drive control unit is connected with a laser of the laser transmit-receive optical system, a photoelectric detector of the laser transmit-receive optical system is connected with the controller, the laser transmit-receive optical system further comprises a gas absorption cell, and the gas absorption cell is connected with the controller. A long-optical-path multiple-reflection optical system is arranged in the gas absorption cell, the laser is arranged in front of a light input port of the long-optical-path multiple-reflection optical system, and the photoelectric detector is arranged on a light path of a light output port of the long-optical-path multiple-reflection optical system. The device has high resolution, and interference with other molecules can be avoided; the structure is simple and easy to realize; not only is the operation easy, but also the cost is effectively saved; the measurement process is very easy to realize and the practicability is very strong.

Retroreflective device (5) for a motor vehicle (1), characterized by: - a first reflector (10) comprising a colored first cover plate (11) which is provided with a specifically manufactured retroreflective optic (13) by means of which a first quantity of light (8) directed onto the retroreflective device (5) can be selectively reflected into a retroreflective area (14); and - a second reflector (15) formed separately from and arranged next to the first reflector (10), which comprises a second cover plate (16) having the same color as the first cover plate (11), formed separately from and directly adjacent to the first cover plate (11), which: o is equipped with a specifically manufactured retroreflective optic by means of which a second quantity of the light (8) emitted onto the retroreflective device (5), which is smaller than the first quantity, can be selectively reflected into the retroreflective area (14) or reflection of the light (8) emitted onto the retroreflective device (5) into the retroreflective area (14) is prevented; or ◯ free from a specifically manufactured retroreflective optic for the targeted reflection of light.

Optical and electrical medical systems and methods thereof are disclosed. Such medical systems may include a console, an optical shape sensing ("OSS") medical device including a fiber optic stylet, one or more electrical medical devices, and a relay module for establishing one or more optical or electrical relay connections between the relay module and the remainder of the medical system, including the console. The console may be configured to convert a reflected optical signal from the fiber optic stylet into its shape for display. The relay module may include a primary receptacle configured to receive a medical barrier puncture plug of the OSS medical device and establish a barrier-through optical connection therebetween. The relay module may also include one or more secondary receptacles configured to receive a corresponding number of electrical plugs of one or more electrical medical devices and establish one or more barrier-under electrical connections therebetween.

A total internal reflection (TIR) optic having a body, fins, and a resilient member. The body includes a truncated, conical first end having a first circumference and a truncated, conical second end have a second circumference. The first circumference is greater than the second circumference. The fins of the TIR optic extend radially from the first end of the body. The resilient member of the TIR optic extends circumferentially from a fin, the resilient member having a secured end at the fin and a free end opposite the secured end. The free end of the resilient member is configured to be moved between first and second positions that are different. When in the first position, the free end is offset from the first circumference of the first end. A luminaire having the TIR optic and methods of mounting the optic in a luminaire.

An optical incoupling element (100) provided in the form of a discrete item attachable on a lightguide (20) is provided, comprising a substrate (100A) and at least one three-dimensionally formed optical surface (104). The optical surface (104) is configured to incouple light incident thereto and to adjust direction of the incoupled light transmitted through an optical contact surface (107) established at an interface between the element substrate (100A) and a lightguide medium (20) such, that the incoupled light acquires a propagation path through a lightguide medium (20) via a series of total internal reflections. The optical surface (104) may comprise at least on optical cavity pattern (101). The element (100) is configured to receive light onto said at least one three-dimensionally formed optical surface (104) from a direction essentially parallel to a longitudinal plane of the planar lightguide (20). A method for manufacturing the optical incoupling element (100), related arrangement, optical unit (250) and uses are further provided.

The inventive concept relates to a total station (10), a method (70) for calibrating a total station, and a method (60) for determining an internal calibration reference for a total station. The method (60) comprises: determining (S600) an alignment error of an optical axis (1030, 1032, 1034) of a reference measurement channel relative to an aiming axis (150) of the total station (10), wherein the reference measurement channel is a measurement channel (1022) comprising a light source or a measurement channel (1020, 1024) comprising an image sensor; rotating (S602) an aiming axis (150) of the total station (10) about a rotation point to a predetermined position in which a light beam emitted from the light source exits the central unit (100) via an objective lens (1000) of the central unit (100) and enters the central unit (100) via the objective lens (1000) after being reflected at a reflective optical element (112) fixedly coupled to the collimator (110) so as to propagate towards the image sensor; emitting (S604) a light beam from the light source; capturing (S606) an image with an image sensor; identifying (S608) a position of the light beam in the image; and determining (S610) an internal calibration reference for the total station (10) based on the determined alignment error of the optical axis (1030, 1032, 1034) of the reference measurement channel and the identified position of the light beam in the image.

The invention relates in particular to a reflective optical element (17) of an illumination optical unit of a projection exposure apparatus, which comprises a structured surface (25 a), which preferably forms a grating structure (29), and a reflective coating (36) applied to the structured surface (25 a). The reflective coating (36) discontinuously covers the structured surface (25 a), and the reflective optical element (17) comprises at least one protective layer (37) continuously covering the structured surface (25 a). The invention also relates to an illumination optical unit (4) of a projection exposure apparatus (1) comprising at least one reflective optical element (17) of the above type, a projection exposure apparatus comprising an illumination optical unit of this type, and a method for producing a protective layer (37) on a reflective optical element (17) of the above type.

The invention relates to a semiconductor technology system, in particular an EUV lithography system, comprising: a housing (25) in which a plurality of preferably reflective optical elements (M1, M2, ...) are arranged in a beam path (33) of the semiconductor technology system, and an inspection device, in particular a camera (30) which has an imaging optic (31) for imaging at least a partial area (T1, T2, ...) of an optical surface (M1', M2', ...) of at least one optical element (M1, M2, ...) to be inspected in the housing (25) onto a spatially resolving detector (32). The inspection device is designed to inspect at least the partial area (T2, T3, ...) of the optical surface (M2', M3', ...) of the optical element (M2, M3, ...) to be inspected via at least one optical surface (M1', M2', ...) of at least one in the beam path (33) between the optical element (M2, M3, ...) to be inspected.) and the optical element (M1, M2, ...) arranged in the housing (25) of the inspection device. The invention also relates to an associated method.

The present invention relates to a virtual image display device and an optical unit, the virtual image display device comprising: a display that emits circularly polarized image light; and an optical member that forms a virtual image by reflecting the image light twice, the optical member having: a lens member; the transmission type reflective optical element is arranged opposite to a first optical surface, close to the display, of the lens component; a reflective polarizing optical element which is provided so as to face a second optical surface of the lens member, said second optical surface being away from the display, and which reflects image light that is linearly polarized light in the first polarization direction; and a wavelength plate element that is provided between the reflective optical element and the polarizing optical element, converts the image light that has passed through the reflective optical element into linearly polarized light in a first polarization direction, and converts the image light that has been reflected back and forth by the reflective optical element into linearly polarized light in a second polarization direction. The gradient normal angle of the wavelength plate element with respect to the optical surface on which the wavelength plate element is provided has an orientation of d + / -5 DEG or less.

Tunable optical metasurfaces can include an optically reflective surface to reflect optical radiation, such as infrared laser light. An array of optical resonant antennas can extend from or otherwise be positioned on the reflective surface, for example, at sub-wavelength spacing, e.g., less than half a wavelength. Voltage-controlled liquid crystals can be positioned in the optical field region of each optical resonant antenna. A controller can apply a voltage differential bias pattern to the liquid crystals of the optical resonant antennas, which can be arranged in a tiled, staggered, or randomly arranged subset of optical resonant antennas to obtain one-dimensional beam control, two-dimensional beam control, and / or spatial beam shaping.

A virtual image display device includes a display, and an optical member, in which the optical member includes a lens member, a transmissive reflective optical element provided facing a first optical surface of the lens member that is close to the display, a reflective polarizing optical element provided facing a second optical surface of the lens member that is far from the display and reflects first polarized light, that is, image light linearly polarized light in a first polarization direction, and a wave plate provided between the reflective optical element and the polarizing optical element, is formed of a photo-crosslinkable polymeric liquid crystal material, converts the image light, that is, linearly polarized light in the first polarization direction, and converts the image light, that is reflected by the reflective optical element to reciprocate, into second polarized light in a second polarization direction.

A plastic optical turning element, an imaging lens module and an electronic device are disclosed. The plastic optical turning element includes an entrance surface, an exit surface, a reflection surface and a reflective optical film layer. The entrance surface is configured to allow an imaging light to enter the plastic optical turning element. The exit surface is configured to allow the imaging light to exit the plastic optical turning element. The reflection surface is configured to turn the imaging light. The reflective optical film layer is disposed on a surface of the reflection surface and includes a silver atomic layer, a bottom optical film and a top optical film. The bottom optical film is in direct contact with the silver atomic layer, and the bottom optical film is closer to the reflection surface of the plastic optical turning element than the silver atomic layer. The top optical film has a refractive index lower than that of the bottom optical film, the top optical film is not in direct contact with the silver atomic layer, and the top optical film is farther away from the reflection surface of the plastic optical turning element than the silver atomic layer. In this way, the image restoration can be improved.

The invention discloses an integrated system suitable for multi-mode polarization interference grating exposure. The integrated system comprises a laser, a collimation and beam expansion system, a first polarization regulation and control unit, a second polarization regulation and control unit, a first variable diaphragm, a second variable diaphragm, a space light absorption plate, a first reflection optical module, a second reflection optical module and a substrate. The invention aims to realize a more compact, stable and easy-to-adjust high-precision exposure device by simplifying an optical path structure, unifying an optical path and introducing a spatial partition polarization modulation mode. The system does not depend on a traditional PBS beam splitting structure any more, a needed interference field is directly generated through a single-beam expansion laser source, a symmetrical double-reflection interference structure is adopted, and the symmetry and stability of the system are greatly improved.