120 results about "Light reflex" patented technology

The invention discloses an image processing algorithm for pupil center real-time extraction and trajectory tracking in an eye closing state. According to the algorithm, from the angle of digital image processing, graying, contrast enhancement and smoothing processing are firstly carried out on an input eye video frame by frame, and then the boundary of a pupil area can be accurately extracted by adopting an adaptive threshold segmentation technology and combining morphological operation and a Canny edge detection operator. And then, accurate fitting of ellipse parameters is performed on the pupil contour by using a geometric distance-based least square method, so that center coordinates and area information of the pupil are obtained, and the accuracy and reliability of pupil monitoring in an eye closing state are remarkably improved. Through recording and analyzing pupil center position changes in a time sequence, real-time tracking of pupil movement tracks is realized. And finally, evaluating pupil light reflex (PLR) in an eye closing state before and after white light excitation by adopting baseline correction and smooth filtering processing. The method has the advantages of high robustness, adaptability to illumination variation, high real-time performance, high precision and the like.

This invention is an optical structure with a plurality of movable reflective elements. These reflective elements have first configurations which allow transmission of environmental light. These reflective elements have second configurations which block (or reduce) transmission of environmental light and which reflect light from a virtual-object display toward a person's eye. This enables display of a relatively-opaque virtual object in an area of a person's field of view, while providing the person with a relatively-clear view of their environment in the rest of their field of view.

The invention discloses an optical detection method and equipment for fruit defects, and relates to the technical field of optical detection of agricultural products. According to the method, phase data of the fruit is calculated according to fringe images of three phase shifts of the same frequency, an absolute phase diagram of the fruit is obtained according to the phase data of the three frequencies, and then shape data of the fruit is obtained. Polarization parameters are generated according to the shape data, reflection areas in the initial image are screened out according to the polarization parameters and the polarized light, and the surface image is regenerated after the reflection areas are removed. And generating a three-dimensional model of the fruit according to the shape data, and mapping pixel points of the surface image to the three-dimensional model to generate a three-dimensional structure diagram. And further, identifying a surface defect area and a shape defect value of the fruit according to the three-dimensional structure diagram. According to the method, the interference of surface highlight reflection on the image quality is effectively eliminated, and the definition and detail reduction capability of the surface image are improved.

An information processing apparatus includes: a first imaging unit that is configured to image a target; a second imaging unit that is configured to image the target; a lighting unit that is configured to emit illumination light; a reflection unit that reflects the illumination light emitted by the lighting unit toward the target; and a drive unit that is disposed at a different position from a position where the lighting unit is disposed, and that drives each of the first imaging unit, the second imaging unit, and the reflection unit.

The invention discloses a low-light image color restoration method and system based on multi-scale attention decomposition and adaptive chromaticity correction, and belongs to the technical field of image processing. The method comprises the following steps: extracting brightness information of a low-illumination image and performing exposure compensation to generate a reference image; inputting and constructing the low-illumination image and the reference image through a scale attention decomposition network to obtain a low-light reflection image, a low-light illumination image, a reference reflection image and a reference illumination image; inputting the obtained low-light reflection image into a self-adaptive chromaticity correction module to adjust the chromaticity to obtain an enhanced reflection image; obtaining an enhanced image through the low-light illumination image and the enhanced reflection image; and performing element-by-element multiplication on the low-illumination image and the enhanced image to obtain a final enhanced image. According to the method, image reflection and illumination information are separated, and balance between image details and the overall illumination effect is ensured through joint optimization training, so that the finally enhanced image is more natural and clear visually.

To provide a visual augmentation technique that alleviates wearing discomfort and is not constrained by visual field restriction.SOLUTION: A projection system includes: a projector 30 which projects an image onto the eyelid; a sensor 20 which detects blinking; and a control device 10 which projects an image onto the eyelid at the timing at which the sensor 20 has detected blinking. The sensor 20 is a photoreflector that irradiates the eyelid with infrared light and detects the reflected infrared light and detects blinking on the basis of the changes in the measurement values of the sensor 20.SELECTED DRAWING: Figure 1

The optical device for monitoring eye health includes a frame (1) in which ophthalmic lenses (2) coated with an infrared filter are mounted; infrared light emitters (7) that illuminate an inner face of the lenses (2), reflecting the light towards the eyes to create images by reflecting off the inner face of the lenses (2); cameras (3) that focus the images created by reflecting off the inner face of the lenses (2); and sensors (5) that detect, as data, the images recorded by the cameras (3); cameras (3) that focus the images created by the reflection of the inner face of the lenses (2); and sensors (5) that detect as data, such images of the eyes recorded by the cameras (3), sending the detected data to an external electronic device (9). It allows to determine from eye movement and other parameters, the eye health of a user's eyes to make an early detection of visual anomalies and other pathologies.

Disclosed herein is adjustable and / or modular augmented reality eyewear with a first viewing mode which optimizes a person's view of the real world and a second viewing mode which optimizes the person's view of virtual objects. The viewing mode is changed by moving a transflective mirror from a first location to a second location. The second location is closer to the center of the person's field of view than the first location. When the transflective mirror is in the person's field of view and reflects light from a display toward the person's eyes, then it displays a virtual object in the person's field of view.

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.

The utility model provides a micro-area femtosecond transient absorption detection system. A femtosecond laser light source control assembly is used for generating laser; the first spectroscope is used for dividing the femtosecond laser into two beams of light; the pump light adjusting assembly is used for generating pump light and adjusting intensity and frequency; the detection light adjusting assembly is used for generating detection light and adjusting the intensity of the detection light to be proper and stable; the beam combiner is used for combining the pump light and the detection light; the transmission absorption detection assembly is used for irradiating a sample with the pump light and the detection light and generating detection transmission light; the reflection absorption detection assembly is used for irradiating the pump light and the detection light to a sample and generating detection reflected light; the microscopic imaging assembly is used for carrying out microscopic observation on the sample area and determining a to-be-detected position, and determining that the pump light and the probe light are accurately irradiated on the to-be-detected position; the detection assembly is used for collecting detection light. According to the utility model, ultrahigh space and time resolution is realized, and functions of transmission transient absorption detection, reflection transient absorption detection and micro-area microscopic imaging are integrated.

To prevent adverse effects on images when extracting a feature amount of a subject or a background part from at least one of a visible image and an invisible image.SOLUTION: An image reading device comprises: an illumination part which irradiates a subject with visible light and invisible light; an imaging part which receives the visible light and invisible light reflected by the subject and captures a visible image and an invisible image; a background part which is provided within an imaging range of the imaging part; and an image processing part which detects a feature amount of the subject or the background part from at least one of the visible image and the invisible image. The background part is configured such that reflectance of a specific wavelength of the visible light is set to be equal to or greater than visible light lower limit value reflectance that defines a lower limit of the reflectance of the visible light, and reflectance of a specific wavelength of the invisible light is set to be equal to or less than invisible light upper limit reflectance that defines an upper limit of the reflectance of the invisible light.SELECTED DRAWING: Figure 7

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 invention discloses a walking beam system and cold rolling equipment. The walking beam system comprises a first beam body, a second beam body, a first laser distance measuring sensor, a first laser reflecting plate, a second laser distance measuring sensor, a second laser reflecting plate and a controller. Wherein the controller is used for receiving first distance measurement data sent by the first laser distance measurement sensor and second distance measurement data sent by the second laser distance measurement sensor, and judging whether the first beam body and the second beam body have faults or not according to the first distance measurement data and the second distance measurement data. Therefore, by measuring the displacement of the beam body of the stepping beam in real time, the steel coil is prevented from toppling over, and the production safety is improved.

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.

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. 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.

The present invention relates to the field of medical device technology, and more particularly to an optical testing device based on intelligent pupil monitoring, comprising a wearable module, an eyelid guidance module, a shooting module, an illumination module, a supplementary determination module, and an intelligent control module. The intelligent control module controls the eyelid guidance module to open the patient's eyelids based on an initial eye image, determines the patient's light reflex tendency based on a standard image of both pupils and a video of both eyes during the optical test, and determines the patient's light reflex status and whether to issue an alarm based on the determination result of the light reflex tendency combined with the patient data from the supplementary determination module. The present invention not only accurately determines the patient's pupil reflex status but also issues an alarm in a timely manner, helping medical staff quickly respond to possible visual or neurological problems with the patient. This device not only improves diagnostic efficiency and accuracy but also provides patients with more detailed and personalized medical monitoring services.

Systems and methods are disclosed for measuring pupillary light reflex and detecting diseases based on eyes features and trends in pupillary and other eye related features. In one example, disclosed is a system for evaluating pupillary features includes a device, a camera, a distance detector, a memory, and a control system. Image data corresponding to an eye of a user is received from the camera. Distance data associated with the eye of the user is received from the distance detector. The distance data is processed to determine a distance of the at least one eye of the user from the distance detector. The image data and the distance are processed to determine at least one pupillary feature. Based on the at least one pupillary feature, a health status associated with the user is determined.

The utility model provides a sensing system and a vehicle. The sensing system comprises an optical splitter, a laser receiving module, a reflection assembly, a visible natural light imaging module and an infrared light imaging module. The optical splitter is arranged corresponding to the laser receiving module and the reflection assembly, and the optical splitter is used for splitting incident light into laser and natural light, transmitting the laser to the laser receiving module and reflecting the natural light to the reflection assembly; the reflection assembly is arranged corresponding to the visible natural light imaging module and the infrared light imaging module. The reflection assembly is used for reflecting natural light to the visible natural light imaging module or the infrared light imaging module. The sensing system selectively receives visible natural light and infrared light, so that the target to be detected can be identified and monitored in all-weather environments with different illumination intensities, and the influence of the illumination intensity of the natural light on the sensing system is broken through.

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.

There is a need in the firearm training field for a firearm that can analyze the shooter's grip, aim, position, and anything else that could affect a shooter's technique. The invention is designed to monitor the shooter's technique in real-time using motion sensors to determine any movement by the firearm or the shooter. A light based detection system also tracks the shooter's and firearm's movement by detecting the amount of time it takes for light emitted from the device to reflect back to the device. The motion detected is analyzed and converted into a haptic feedback for the device to emit to the user, usually in the form of a vibration or shaking. The shooter can interpret the haptic feedback in real-time and correct their shooting technique without having to interrupt their shooting session.

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.