55 results about "Light reflex" patented technology

An imaging device includes: a lens assembly configured to receive light, wherein the lens assembly includes a plurality of lenses sequentially arranged along an optical axis according to an arrangement order with respect to a direction of the light, wherein the plurality of lenses include a first lens disposed first in the arrangement order, a second lens disposed second in the arrangement order, a third lens disposed third in the arrangement order, and a fourth lens disposed fourth in the arrangement order, and wherein a refractive power of the first lens and a refractive power of the second lens are positive; and an optical member configured to receive the light from the lens assembly and guide the light in a direction intersecting the optical axis by reflecting the light at least once.

The invention relates to the technical field of ultraviolet imaging testing, and particularly discloses an ultraviolet imaging testing device and an ultraviolet imaging testing correction method.The ultraviolet imaging testing device comprises a window material, a spectroscope, a visible light camera and an ultraviolet camera, visible light and ultraviolet light in the field angle range are received through the window material and then transmitted to the spectroscope; the spectroscope reflects short-wave ultraviolet light to the optical axis direction of the ultraviolet camera based on the reflection and transmission characteristics of the spectroscope, the ultraviolet camera specially receives the short-wave ultraviolet light so as to detect corona discharge and other weak signals, meanwhile, visible light penetrates through the spectroscope and is received by the visible light camera, and the component is used for capturing background visible light information to facilitate follow-up image fusion processing. The system integrates ultraviolet and visible light data to comprehensively evaluate the insulation state of equipment, is suitable for long-distance or weak discharge detection, and enhances the inspection efficiency and reliability of electric power facilities.

An optical system according to an embodiment of the present invention comprises: a first lens having refractive power and a reflective surface that reflects light incident on a first optical axis toward a second optical axis; and second to eleventh lenses disposed between the first lens and an image sensor and sequentially aligned along the second optical axis, wherein the first lens includes a concave object-side surface on the first optical axis and a convex sensor-side surface on the second optical axis, and the third to tenth lenses may move along the second optical axis in groups of two or three lenses according to the operation mode.

The utility model discloses an interpupillary distance calibration pupil pen lamp which comprises a pupil pen lamp body, a thread is arranged at the position of the pupil pen lamp body, a threaded sleeve is connected to the position of the thread in a threaded mode, one end and the other end of the threaded sleeve are both connected with frame bodies, and the positions of the frame bodies are connected with the same ring body. According to the utility model, the thread bushing is in threaded connection with the thread at the pupil pen lamp, so that the thread bushing rotates at the thread to drive the ring body and the pupil pen lamp to adjust the distance, and the ring body is in contact with the skin around the eyes of a patient, so that medical personnel can adjust the distance between the ring body and the pupil pen lamp according to individual differences (such as eye socket depth, facial contour and the like) of the patient. The distance between the pupil pen lamp and the eyes is accurately adjusted, it is guaranteed that light stably and properly irradiates the pupils, the light reflex examination result of the pupils is more accurate, and disease diagnosis is assisted.

An optical coherence tomography apparatus generates a tomographic image of measurement target based on an interference signal generated by synthesizing reflected light of measurement light reflected in the measurement target with reference light. The optical coherence tomography apparatus includes: a first mirror reflecting the reflected light of the measurement light reflected deep in the measurement target to a first direction for synthesis with the reference light and causing the measurement light to scan the measurement target by rotation with a first axis as an axis of rotation; and an image capturer capturing an image of a surface of the measurement target by using object light that is visible light emitted from the surface of the measurement target. The first mirror is fixed in an orientation for reflecting the object light to a direction of the image capturer in a case where the image capturer is in an image capture state.

An observation apparatus includes: an illumination optical system provided below an installation position of a multi-well plate; a reflector provided above the installation position, the reflector being configured to reflect light emitted from the illumination optical system; and an observation optical system provided below the installation position, the observation optical system being configured to condense the light reflected by the reflector. The reflector is installed such that a marginal ray to enter the observation optical system travels via a peripheral well different from an on-axis well located on an optical axis of the observation optical system before reflection due to the reflector.

Provided are a camera module using a small reflection part and an optical device for augmented reality using the same. The camera module using a small reflection part includes a lens part in which at least one lens is disposed, and an image sensor that converts image light incident through the lens part into an electrical signal and outputs the same. The camera module using a small reflection part includes a reflection part that reflects the incident image light to be transmitted to the lens part, and a reflection surface of the reflection part is inclined with respect to an optical axis of the incident light to reflect the incident image light to the lens part and serve as an aperture for the incident light.

The embodiment of the invention provides a passive optical network (PON) coexistence method and device, and the method comprises the steps: controlling a 50G PON downlink signal and an EPONamp at the same moment; one of the 10G EPON uplink optical signals is transmitted in the PON optical path, and the 50G PON downlink signal comprises a 50G PON downlink optical signal and / or a 50G PON downlink optical reflection signal and EPONamp; the 10G EPON uplink optical signal comprises an EPON uplink optical signal and / or a 10G EPON uplink optical signal. According to the invention, the problem that the uplink services of the EPON and the 10G EPON are influenced by the 50G PON downlink light reflection of the PON system in the related technology is solved, and the effect of preventing the uplink services of the EPON and the 10G EPON from being influenced by the 50G PON downlink light reflection of the PON system is achieved.

This invention discloses a machine vision-based method and system for monitoring medication dispensing. The method involves acquiring a multi-view polarized image sequence and corresponding depth image sequence of the medication dispensing operation area; performing physical-level specular de-illumination on the multi-view polarized images and identifying transparent material regions to generate multimodal fusion data with transparency priors; detecting the operator's hand posture in real time to generate a dynamic occlusion mask; constructing and training a dynamic neural radiation field, incorporating a temporal de-occlusion prior loss during training to utilize unoccluded spatiotemporal information to recover the visual features of the area marked by the dynamic occlusion mask; and based on the trained dynamic neural radiation field, removing the hand region and rendering a de-occluded and specular-de-illumination virtual monitoring view. This invention solves the problems of target loss, inaccurate measurement, and poor interpretability caused by specular reflection, transparent objects, and dynamic occlusion.

A device for directing illumination for a sample volume in microscopy, such as in-situ cytometry. The device includes a body having a distal front end with an optical aperture provided therein, and a reflector. The reflector is arranged distal from the front end and at a non-zero distance from the optical aperture and is configured to receive light emitted through the front end and reflect at least part of the light received from the front end back into the optical aperture. The reflector is connected to the body by at least one cantilevering strut. The device may be part of an objective lens unit.

The imaging lens assembly according to an embodiment of the present application comprises: a reflection member disposed on an imaging surface side of the reflection member and reflecting incident light from an object side; a lens group; and an optical member disposed between the lens group and an imaging surface and including at least a first surface that transmits incident light from the lens group, a second surface that is inclined with respect to an optical axis of the lens group and totally reflects incident light from the first surface, and a third surface that is inclined with respect to an optical axis of the lens group and totally reflects incident light from the second surface. The third surface reflects or totally reflects incident light from the second surface to the imaging surface side.

The utility model provides a touch sensing assembly and touch sensing equipment. The touch sensing device comprises a touch panel with a defined touch surface, and the touch sensing assembly comprises a light-emitting unit, a first optical component and at least two camera shooting units. The light emitting unit is configured to emit infrared light; the first optical component is configured to reflect and guide the infrared light emitted by the light emitting unit to the touch surface; the view field range of each camera shooting unit at least partially covers the touch surface, each camera shooting unit is used for acquiring an infrared light imaging pattern of a touch object acting on the touch surface, and the infrared light imaging pattern of the touch object on the touch surface is used for determining corresponding touch information of the touch object on the touch surface. Due to the arrangement of the first optical component, the light-emitting unit does not need to be arranged on the front face of the touch panel, in this way, the situation that the light-emitting unit obviously protrudes out of the front face of the touch panel can be improved, and the size of the front face part of the frame can be reduced.

The invention discloses a laser screw type hoist jamming emergency stop device which comprises a hoist and a gate plate body, the hoist comprises a hoist base, a motor, a transmission mechanism and a screw, the screw penetrates through the whole hoist, the hoist is fixed to other structures of a water gate, the motor is mounted in the hoist, and the transmission mechanism is mounted on the transmission mechanism. The motor controls the lifting of the screw rod through the transmission mechanism, the laser monitoring equipment comprises a top laser sensor, a top laser, a bottom laser sensor and a bottom laser, the top laser sensor is fixed at the top of the hoist, and a reflecting plate for reflecting the top laser is mounted at the top of the screw rod; the bottom laser sensor is fixed to the bottom face of the hoist base, and bottom laser emitted by the bottom laser sensor can directly irradiate the upper surface of the gate plate body to be reflected. According to the invention, a set of high-precision laser monitoring equipment is installed, so that 24-hour real-time monitoring of the operation state of the screw hoist is realized.

This invention provides an ophthalmic measurement system based on a frequency-adjusting device, comprising an OCT light source, a reference arm, a sample arm module, an optical fiber coupler, and a detector. The sample arm module integrates an optical path switching scanning device, capable of reflecting the probe light to the posterior or anterior segment of the eye. By introducing a frequency-adjusting device to dynamically adjust the optical path, maintaining a constant optical path or phase change between the A and Scan, Doppler frequency shift is achieved, enhancing detection depth without sacrificing resolution. The system can rapidly switch imaging focal points to adapt to eyes with different vision and perform refractive compensation, acquiring high-resolution OCT images. Furthermore, the system can accurately measure key parameters such as corneal curvature, thickness, anterior chamber depth, and lens thickness, effectively improving diagnostic speed. This invention overcomes the limitations of existing technologies in detection depth, imaging speed, and accuracy while ensuring image quality.

The application discloses a kind of laser and infrared common-caliber optical systems, for solving the technical problems such as the difficulty of existing composite optical system to realize high sensitivity detection, optical axis pointing stability is susceptible to environmental influence and not having image stabilization function etc..The optical system includes off-axis reflective optical unit, dichroic flat plate, infrared imaging unit, laser emission unit and laser receiving unit, dichroic flat plate is located in the reflection light path of the seventh mirror in off-axis reflective optical unit, for transmitting infrared light, reflecting laser;Laser emission unit, laser light splitting flat plate, dichroic flat plate, off-axis reflective optical unit form laser emission optical system;Off-axis reflective optical unit, dichroic flat plate, infrared imaging unit form infrared imaging optical system;Off-axis reflective optical unit, dichroic flat plate, laser light splitting flat plate, laser receiving unit form laser receiving optical system.The optical system has high integration, greatly improves the consistency of each optical path optical axis pointing.

The utility model provides a punching sighting device for an ankle fracture surgery. The punching sighting device is used for solving the problems that in the prior art, a punching sighting device is complex in structure and inconvenient to use by medical staff. The fixed seat is rotatably connected with the fixed section of the first telescopic part, so that the first telescopic part can rotate relative to the fixed seat during use, and the first telescopic part can be fixed by the first fixing component after rotation; the arc-shaped section of the second telescopic part is in sliding connection with the arc-shaped section of the first telescopic part, so that the length of the telescopic assembly can be adjusted during use, and the telescopic assembly is fixed through the second fixing assembly after adjustment; according to the hole puncher, the first telescopic component is arranged at the fixed end of the first telescopic component, and the reflector component is rotatably arranged at the fixed end of the second telescopic component, so that the reflector component can reflect infrared light of the infrared generator to a bone of a fracture part, interference among the telescopic component, the reflector component and the hole puncher can be avoided through adjustment, and the hole puncher is convenient for medical staff to use.

In various implementations, a device for stimulating the lacrimal gland and optionally the meibomian gland of an eye of a user by emitting light on the retina may include a control unit and an optical system connected to the control unit and arranged in the viewing direction of the user. The optical system may include at least one light source and may be configured for providing light stimulation pulses to an eye of the user by the at least one light source. Implementations of the device may also include a power supply unit for supplying power to the control unit and / or optical system. The light stimulation pulses activate the pupillary light reflex and one or more reflexes selected from blink reflex, corneal reflex, menace reflex, and lacrimal reflex. When the device is in operation mode a light intensity gradient between the light pulses emitted by the at least one light source and the light around the eye may be maintained at 2 or more lumens. The light stimulation pulses may induce blinking of the eye of the user.

This invention relates to the field of optical inspection and optical path alignment, and discloses a multi-degree-of-freedom adjustable laser interferometric alignment device, comprising a frame, a main optical path channel fixedly installed on one side of the frame, a polarizing beam splitter fixedly installed in the middle of the main optical path channel with an installation tilt angle of 45°, a fixed waveplate fixedly installed inside the main optical path channel near the lower part of the polarizing beam splitter, a polarization state sensor fixedly installed inside the main optical path channel between the polarizing beam splitter and the fixed waveplate, and a beam splitter mirror fixedly installed on the lower side of the main optical path channel with an installation tilt angle of 45°. This invention achieves precise multi-degree-of-freedom adjustment and sub-micron level alignment accuracy, is highly adaptable to various environments, and is easy to operate. It effectively solves the problems of single alignment dimension and insufficient accuracy in traditional devices, and is suitable for high-end scenarios such as high-power laser communication.

The invention discloses a VR equipment visual comfort transition method and device based on eyelid bionics, and the method comprises the steps: controlling a physical shading part disposed between the eyes of a user and a display unit, and simulating the opening and closing motion of human eyelids to manage light rays entering the eyes; the control steps specifically comprise: receiving an input instruction; selecting to enter a protective instantaneous closing mode or an adaptive gradual change mode according to the type of the input instruction; if a protective instantaneous closing mode is entered, executing a protective instantaneous closing curve, and providing active physical protection; if the adaptive gradual change mode is entered, executing an adaptive gradual change curve, and driving a physical shading part to open or close in a non-uniform motion manner; wherein the speed change curve of the non-uniform motion is designed based on a human eyelid natural opening and closing motion rule and a pupil light reflex kinetic model. The eyelid is simulated through the physical shading part, light input is controlled through the on-off dynamic characteristics of the physical shading part, and therefore dizziness-free and high-comfort-degree switching between the virtual environment and the real environment is achieved.

The invention discloses an interactive pupil light reflex teaching demonstration model and a working method thereof, and belongs to the technical field of medical education tools. The model comprises a demonstration light source, a photosensitive sensor, an adjustable pupil simulation mechanism, a neural pathway visualization assembly, a control circuit module and a man-machine interaction control interface, lED lamp strips and RGB lamp beads which are arranged along the optic nerve, the visual crossover, the visual beam, the midbrain apical anterior region, the para nucleus of the oculomotor nerve and the oculomotor nerve are controlled to be lightened in sequence, and an input channel, a central connection channel and an output channel of a neural signal are presented in a visual mode; meanwhile, the steering engine is driven to adjust the adjustable diaphragm structure, and dynamic contraction and expansion of pupils along with the change of light intensity are achieved. According to the invention, abstract physiological changes of pupils and neurotransmission pathways are converted into a visual, controllable and repeatable teaching demonstration process, and the system has the advantages of strong interactivity, good intuition, high safety and suitability for medical teaching and practical training.

This invention discloses a method, device, and medium for imaging internal cavity defects based on ultraviolet (UV) light, belonging to the field of intelligent optical inspection technology. The method includes: acquiring multi-source workpiece data and automatically adjusting the wavelength and intensity of the UV light source based on the data to generate a UV light source configuration; setting the UV light source parameters of a high-resolution UV camera according to the configuration, emitting fluorescence on the workpiece surface and internal cavity, capturing fluorescence reflection signals, and generating a fluorescence reflection image through UV imaging; using a fusion algorithm to fuse the deep defect image with the fluorescence reflection image to obtain a composite defect image, and sharing and uploading the composite defect image to the cloud in real time to generate a defect analysis report. Real-time data sharing and cloud uploading ensure the immediate dissemination and remote access of defect analysis results, improving detection efficiency and response speed.

An optical imaging system includes lenses. A prism is disposed adjacent to a first lens of the lenses and a second lens of the lenses, and is configured to refract light from the first lens to the second lens. A reflecting member is disposed adjacent to a fifth lens of the lenses and an imaging plane, and is configured to reflect light from the fifth lens to the imaging plane.

The utility model provides a pupil pair light reflex examination device, the pupil pair light reflex examination device comprises a first frame, a second frame, a connecting part and a light source part, the first frame and the second frame are respectively connected with two ends of the connecting part, the light source part is pivotally connected with the second frame, and the connecting part is connected with the connecting part. The movement range of the light source part enables the illumination range provided by the light source part to cover a preset area in the first frame.

The invention relates to a method for warning a driver (204) of a vehicle (201). In the method, an image of a face of a driver (204) is captured using an interior camera (101) arranged in a vehicle (201). The pupil width of the pupil of the driver (204) is determined in each case in the images captured by the interior camera (101). An expected pupil light reflex of the driver (204) is assigned to a change in light condition, and an actual pupil light reflex that the driver (204) responds to that change is determined from the pupil width. A warning signal is output for the driver (204) when the actual pupil light reflex substantially deviates from the expected pupil light reflex.

A camera module is provided. The camera module includes a first lens, a second lens, a lens holder configured to support the first lens, a reflector disposed between the first lens and the second lens and configured to reflect, to the second lens, light passing through the first lens, and a blocking wall configured to block an optical path between the reflector and the lens holder.

Provided is a system, device and method for protecting optics. The system includes an optical head (200) comprising a micro electro mechanical system (310) including an array of independently steerable micromirrors (114) in an optical path of the optical head (200) and a sensor (308) for sensing light, wherein the micro electro mechanical system (310) reflects light onto the sensor (308) for imaging.

An imaging device according to one embodiment of the present disclosure includes: a lens assembly including at least four lenses sequentially arranged along an optical axis direction, the at least four lenses include a first lens disposed first in an incident direction of light and having a positive refractive power, a second lens disposed second in the incident direction of light and having a positive refractive power, and a third lens disposed third in the incident direction of light, and a fourth lens disposed by a fourth in the incident direction of the light; and an optical member configured to reflect the light focused or guided by the lens assembly at least once so as to guide the light in a direction intersecting an optical axis, and the imaging apparatus satisfies conditions proposed in the disclosed embodiments. Other various embodiments are also possible.

An imaging lens system is provided. The imaging lens system includes a lens group including a plurality of lenses; and an optical path conversion member disposed between the lens group and an imaging plane. The lens group may include a first lens, a second lens, a third lens, and a fourth lens sequentially disposed from an object side toward the imaging plane. The optical path conversion member may reflect light emitted from the lens group two or more times to increase a rear focal length of the lens group (or a distance from an image-side surface of a lens disposed on a rearmost side of the lens group to the imaging plane).

The purpose of this disclosure is to provide a head-up display device which can be made smaller in the front-rear direction of a vehicle.　This head-up display device is provided with a concave mirror (30) having a reflection surface (30a) that reflects display light (L) toward a windshield (201) of a vehicle. An incidence direction (Li) of the display light (L) on the reflection surface (30a) is set at an angle (θ) that intersects the front-rear direction (Fd, Bd) of the vehicle in the horizontal plane.