37 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.

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.

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.

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.

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.

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.

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.

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.

A camera module comprises a first optical path control member disposed on a moving path of light reflected from a subject and reflects the light incident in a first direction in a second direction perpendicular to the first direction, a first driving member connected to the first optical path control member and controlling a movement of the first optical path control member, a lens portion disposed on the moving path of the light and including at least one lens, an image sensor that detects light passing through the lens, a sensing portion that detects angular velocity and acceleration changing by shaking, and a control portion for controlling the tilt of the first optical path control member in a first or second axis based on the angular velocity and acceleration changing by the shaking.

The present disclosure is directed to systems and methods for measuring pupillary responses to visible light stimuli. An exemplary system provides a display and a camera on the same side of a device; the display provides a visible light stimulus to illuminate a user's face and cause a pupillary reflex. A visible light or infrared camera thereafter receives image data of the pupillary light reflex. In some examples, an ambient light sensor and infrared measurement systems allow for performing pupillary light reflex assessments in low lighting conditions.

The invention relates to a device for optical communication. The apparatus includes: a transceiver unit configured to transmit first signal light and first beacon light, and receive second signal light from another apparatus in optical communication with the apparatus; a tracking unit configured to receive a second beacon light from another device; a transmission unit configured to transmit the first signal light and the first beacon light from the transceiver unit to another apparatus, receive the second signal light and the second beacon light from the another apparatus, transmit the second signal light to the transceiver unit, and transmit the second beacon light to the tracking unit; and a calibration unit configured to reflect the first beacon light transmitted in the transmission unit to the tracking unit to calibrate the optical axis of the device in the tracking unit in a calibration stage before the device performs optical communication with another device. According to the invention, high coaxiality of the device for optical communication can be realized in a simple way, so that the device can realize efficient optical communication.

The application relates to the technical field of pupil parameter detection, and discloses a parameter quantification method and system based on an intelligent quantification pupil pen, a pupil pen and a medium.The method comprises the following steps: acquiring a resting image sequence of a target pupil in a non-stimulating measurement environment, processing the resting image sequence, and obtaining a resting pupil diameter; acquiring a dynamic image sequence of the target pupil in a visible light stimulating measurement environment, and obtaining dynamic parameters of the target according to the dynamic image sequence and the resting pupil diameter; and obtaining an analysis report according to the dynamic parameters and the resting pupil diameter.The application can directly output accurate numerical values such as the resting pupil diameter, the light reflex latency, the contraction speed, the contraction amplitude and the like, subjective estimation errors are eliminated, consistent results can be obtained by different operators using the same device, and the evaluation accuracy and reliability are improved.

A LiDAR system that uses a MEMS-based scanning mirror that reflects pulsed light generated by a laser. The scanning mirror reflects the light through a lens system which collimates the light and allows its transmission to a digital micromirror device that steers the light to different locations corresponding to different orders towards an object to be detected. A photodiode, operational amplifier, timing chip and processing device then receive and process the light signal and generate a control sequence to synchronize timing of movement of the MEMS-based scanning mirror and the digital micro mirror device.

This invention provides an optical observation device and an imaging method using the optical observation device that suppress the generation of shadows caused by the unevenness of a sample when observing a sample containing cells using ultraviolet light. [Solution] The optical observation apparatus disclosed herein includes a placement unit on which a sample containing cells can be placed, A light source 12 capable of projecting ultraviolet light, An optical unit that reflects ultraviolet light (UV) incident from light source 12 onto sample S, irradiating sample S with ultraviolet light (UV), and transmits observation light emitted from sample S by ultraviolet light (UV), An imaging optical system that forms an image of the aforementioned observation light as an observation image, It includes an imaging unit that captures the formed observation image using an image sensor, The ultraviolet light reflected by the optical unit is incident on the sample S from a direction substantially perpendicular to the surface of the sample S.

An objective evaluation system for dynamic characteristics of light reflex of pupils comprises the following steps: acquiring an undoubtedly type region and an interference region of a color pupil image; constructing a pupil diameter-time change curve of a pupil sub-block coverage area in the undoubtedly-type area, and obtaining key judgment parameters of the pupil diameter-time change curve of the patient under different scenarized information conditions, additionally generating a key judgment parameter safety threshold interval in an anesthesia depth detection mode and a key judgment parameter personalized derivative parameter in a neurology department follow-up visit mode; constructing a clinical evaluation comparison table, evaluating the dynamic parameter set according to the clinical evaluation comparison table, and obtaining a reflection level corresponding to the dynamic parameter set; standardized diagnosis and treatment suggestions and clinical early warning signals of the patient are generated according to the reflection level, a neural function personalized evaluation conclusion of the patient is generated according to key judgment parameter personalized derivative parameters, and a refined reference basis is provided for early screening of diseases and judgment of severity of illness states.

This invention discloses an intelligent identification method for heavy minerals based on multi-source image information. The method involves separating heavy minerals to obtain single-polarized light images, orthogonal light images, and reflected light images; aligning these images to obtain single-polarized light panoramic images, orthogonal light panoramic images, and reflected light panoramic images; segmenting these panoramic images into particles to obtain segmented particle images; and using the segmented particle images and corresponding real labels as training data to obtain a multi-channel recognition model for identifying the particle images of the heavy minerals to be identified, thus obtaining the recognition results. This invention utilizes image recognition technology and automatic learning capabilities to establish a complex relationship between the image features of different heavy minerals under different optical conditions (single-polarized light, orthogonal light, reflected light, etc.) and the types of heavy minerals. Furthermore, by segmenting and recognizing multi-source images, it achieves the identification and automatic measurement of different types of heavy minerals, improving work efficiency and accuracy, reducing the time personnel are exposed to toxic reagents, and lowering safety risks.

A hybrid NIRF / IVUS imaging probe containing i) a spatially-truncated optical lens a substantially-planar surface of which is inclined with respect to an axis to reflect light, transmitted between proximal and distal ends of the probe, internally into a body of the lens, and ii) an acoustic transducer disposed sequentially with the optical lens on the axis of the probe while, at the same time, the optical and electrical members of the probe transmitting the radiative and mechanical energies (which the probe exchanges with a target bodily vessel) are parallel to one another within the housing of the probe. A method for operating the probe resulting in formation of spatially co-registered optical and acoustic images of the target. Related imaging system and computer-program product.