21 results about "Diffuse illumination" patented technology

A lighted architectural-structure covering is disclosed. In one example of an embodiment, an architectural-structure covering includes a light source arranged and configured to illuminate at least a portion of the architectural-structure covering. The architectural-structure covering may include first and second coverings. The light source is arranged and configured to direct light onto the second covering, which is arranged and configured to reflect, redistribute, etc. the received light toward the interior space of the room in which the architectural-structure covering is located. Thus arranged, the architectural-structure covering may be used to create, for example, diffused-lighting effects.

A split-cadence eye tracking that includes a lower-cadence pipeline that estimates the multiple (e.g., five) degrees of freedom (DoF) position of the eye with respect to the camera / device to estimate gaze, and a higher-cadence, faster pipeline that estimates only the two DoF of rotation of the eye and interpolates from a previous reference frame to estimate gaze. Diffuse lighting may be used to capture images of the pupil for low-cadence frames, and specular lighting may be used to capture images of glints for high-cadence frames.

The present application relates to the technical field of lamps, and provides an explosion-proof hand lamp, which comprises a lamp head assembly and a lamp body assembly; the lamp head assembly comprises a lamp head shell, a lamp plate, a light distribution lens and a light uniformizing cover; lamp grooves are formed in two large faces of the lamp head shell; the lamp plate is arranged in the lamp grooves; the light distribution lens is connected with one large face; and the light uniformizing cover is connected with the other large face, so as to cover the openings of the lamp grooves on two sides. According to the present application, the light distribution lens and the light uniformizing cover are arranged on the two large faces of the same lamp head shell respectively, and the lamp plate has light emitting conditions corresponding to the lamp grooves on two sides at the same time, so that two sets of different light emitting mechanisms are integrated on the same explosion-proof hand lamp: one side can obtain a light beam shaping with more directionality, and the other side can obtain more uniform and soft diffuse illumination; in combination with the hinged adjustable pointing of the lamp head and the lamp body, the operator can switch between different illumination forms and illumination directions according to the needs of the activity environment, so that the problem that the traditional explosion-proof hand lamp has only single light distribution and is difficult to adjust the illumination demand with the change of the environment is solved in structure.

A method for synthesizing a diffused image (S) representative of the appearance of a surface under diffused illumination comprises: a) obtaining at least two directional images (D1, D2, D3) of the surface, each directional image having been acquired along a predefined viewing direction under directional illumination of the surface from a predefined illumination direction; b) for each directional image, determining a plurality of statistical parameters ({A1, n, m}, {A2, n, m}, {A3, n, m}) representative of a statistical distribution of pixel values in the respective directional image; c) predicting a plurality of probability distribution parameters ({Ap, n, m}) representing a predicted probability distribution function of pixel values in the diffusion image using statistical parameters associated with the at least two directional images as predictors, and d) determining pixel values of the diffusion image based on samples from the predicted probability distribution function.

The application discloses a kind of based on machine vision's weld defect mobile scanning device, belong to detection technical field.It includes mobile scanning device and visual scanning unit, transverse sliding groove can adjust camera and light source position left and right, a set of device can cover flat plate welding, pipeline welding and multiple pass welding and multiple working conditions, equipment versatility is better, light source module adopts strip light source and top light source combination arrangement, strip light source is illuminated with low angle side, utilize the texture difference of defect and base material to highlight crack, bite edge profile;Top light source provides high uniformity diffuse illumination, inhibits metal surface specular reflection and glare;Adjusting pivot drives light source support swing, can adjust illumination direction for different bevel angle and surface roughness, shaft end fixed seat is locked after scanning, and will not run position by oneself. Multi-light source cooperation makes image signal-to-noise ratio improve, defect edge is clearer, provides high-quality image source for rear-end machine vision algorithm to identify crack, porosity, incomplete penetration and other defects.

The utility model discloses a multi-point dynamic adjustment type tunnel light source which comprises a working frame, a workpiece positioning unit, a light source assembly and a visual assembly are fixedly arranged on the working frame, and the light source assembly and the visual assembly are located at the positions corresponding to the workpiece positioning unit. The height, the angle and the distance of the two reflecting shells can be adjusted relative to the workpiece, so that the irradiation angle of a light source is adjusted according to different detection requirements and object shapes, the optimal illumination effect is achieved, the visual imaging problem of the metal high-reflection rotary body is solved, and the detection accuracy is improved. According to the invention, a plurality of camera modules can be simultaneously used and X-axis moving working scenes can be handled, and light can be subjected to set reflection and heat dissipation in the reflection cavity, so that a uniform diffuse illumination effect is realized, shadows and light reflection are reduced, a uniform and stable illumination environment is provided for a machine vision system, image information of an object can be accurately acquired, and the visual effect of the machine vision system is improved. And powerful guarantee is provided for machine vision detection.

The present invention comprises: a sample opening (22); a measurement opening (23); an illumination optical system for illuminating a to-be-measured position of a measurement object (100) via the sample opening; and a light-receiving optical system for condensing light to be measured reflected from the to-be-measured position to a measurement unit, wherein either the illumination optical system or the light-receiving optical system includes a colorimeter (2) that is an optical system of diffused light reception or diffused illumination using an integrating sphere (21). In addition to the sample opening (22) and the measurement opening (23), a third opening (26) is provided in the integrating sphere (21). An angle ω formed by a line G2 connecting the center of the third opening (26) and the center of the measurement object (100), and a regular reflection direction G1 of the measurement object (100) with respect to an optical axis G3 of another optical system which is not the optical system using the integrating sphere (21) satisfies 15°<ω.

The virtual image display device of the present application is provided with: an illumination unit (40) that emits white illumination light; an image forming unit (20) that forms an image by transmitting the illumination light and emits display light of the image; and a condensing unit (30) that condenses the illumination light to the image forming unit (20). The image forming unit (20) has a plurality of pixel regions (212) arranged. The condensing unit (30) has: a front-stage lens portion (312) in which a plurality of front-stage lens portions are arranged to form a wave surface-shaped diffusion surface (313) that diffuses illumination light that has independently entered each pixel region (212) in an angle space in which the illumination light is independently condensed, and a rear-stage lens portion (322) in which a plurality of rear-stage lens portions are arranged to intermittently form a refracting surface portion in a direction orthogonal to a respective optical axis (A1), the refracting surface portion refracting the illumination light that has independently entered each pixel region (212) in an angle space in which the illumination light is independently condensed.

A multi-functional background illuminator for use with slit lamps is disclosed. The illuminator includes a housing with non-filtered green, blue, and white light-emitting diodes, a rechargeable power supply, an electronic control board, and a rheostat for intensity control. A multi-directional mounting clip attaches the illuminator to a slit lamp tower and permits horizontal and vertical rotation. The green LED enhances visualization of meibomian glands without infrared imaging, the blue LED provides an expanded excitation field for fluorescein dye to improve assessment of tear film and corneal staining, and the white LED supplies wide-field diffused illumination with reduced glare for examination of eyelids, lashes, and conjunctival surfaces. The device extends the diagnostic capabilities of conventional slit lamps by providing wider field illumination and multiple selectable lighting modes in a compact, portable unit.

Information handling system keyboard illumination is provided with micro LEDs disposed below keyboard keys to direct illumination at each key individually. The micro LEDs may be integrated at a bottom surface of a support plate below a keyboard membrane, on top of the support plate within an opening of the membrane or in a spacer layer of the membrane between circuit layers. A diffuser disposed between the micro LED helps to diffuse illumination directed at the key for a more even icon illumination. The diffuser may be integrated with the membrane at an upper circuit layer or over a structure disposed over the micro LED.

Embodiments of the present disclosure relate to diffuse lighting systems. A diffuse lighting system for reducing diffuse-related illumination nonuniformity includes an array of vertical cavity surface emitting laser (VCSEL) emitters and a diffuser element comprising a transparent substrate and an array of nanostructures. The size and shape of each nanostructure are configured to delay the phase of two orthogonal polarization states of light incident on each nanostructure from the emitter to reduce illumination nonuniformity in the output.

A lighted architectural-structure covering is disclosed. In one example of an embodiment, an architectural-structure covering includes a light source arranged and configured to illuminate at least a portion of the architectural-structure covering. The architectural-structure covering may include first and second coverings. The light source is arranged and configured to direct light onto the second covering, which is arranged and configured to reflect, redistribute, etc. the received light toward the interior space of the room in which the architectural-structure covering is located. Thus arranged, the architectural-structure covering may be used to create, for example, diffused-lighting effects.

Here discloses a 3D sensing apparatus with AI-controlled Ferroelectric Liquid Crystal beam steering for enhanced dot illumination. The illumination unit for a three-dimensional depth-sensing device includes a light source for emitting an illumination light; a diffuser that diffuses the illumination light into diffused illumination light; and a dual-layer Ferroelectric Liquid Crystal unit, positioned immediately after the diffuser, wherein the dual-layer Ferroelectric Liquid Crystal unit includes a first ferroelectric liquid crystal layer and a second ferroelectric liquid crystal layer, wherein the first ferroelectric liquid crystal layer adjusts a direction of the diffused illumination light, and wherein the second ferroelectric liquid crystal layer corrects a polarization change of the illumination light induced by the first ferroelectric liquid crystal layer. This novel illumination unit features dual-layer Ferroelectric Liquid Crystal technology that enhances the precision and speed of beam steering in 3D depth-sensing devices.

A split-cadence eye tracking that includes a lower-cadence pipeline that estimates the multiple (e.g., five) degrees of freedom (DoF) position of the eye with respect to the camera / device to estimate gaze, and a higher-cadence, faster pipeline that estimates only the two DoF of rotation of the eye and interpolates from a previous reference frame to estimate gaze. Diffuse lighting may be used to capture images of the pupil for low-cadence frames, and specular lighting may be used to capture images of glints for high-cadence frames.

Systems and methods are disclosed for directing radiant energy to permanently shadowed or occasionally shadowed regions such as on the floors of craters or in valleys in lunar polar regions to provide illumination, thermal power, electricity, communications, and other services. Embodiments of the systems include reflector elements to provide diffuse illumination, focused illumination, and thermal power, structures to support the reflectors and other elements, communications devices for varied signal types, and methods for installing the system. The structure can be compactly folded and delivered to be automatically installed.

Machine vision devices and systems with automatically switchable direct and diffused illumination are provided herein. An example includes a machine vision system, comprising an image capture device, a material with switchable optical properties, wherein the material with switchable optical properties has a transparent state and a translucent state, and a light source, wherein the light source is positioned to illuminate a target of the image capture device, and the material with switchable optical properties is positioned between the light source and the target of the image capture device and configured to switch between the transparent state which is configured to provide direct illumination of the target and the translucent state which is configured to provide diffused illumination of the target.

A photographic stage and photographic system is provided that produces consistent diffused lighting of an object or subject that is virtually shadow free for obtaining rotational views of the object in a time efficient manner. The photographic stage may be used with a camera array, or a single camera may be moved around the circumference of the photographic stage to obtain a series of images needed to form a rotational view of an object or subject. Alternatively, the photographic stage may be rotated to pass by a single fixed camera to obtain a series of images needed to form a rotational view of an object or subject.

Systems and methods for reading machine-readable indicia (e.g., barcodes) can include emitting, by a code reading device, a light to illuminate a surface including a machine-readable indicia. The code reading device can capture an image of the machine-readable indicia, and determine whether an image quality parameter of the image of the machine-readable indicia captured by the image sensor satisfies a predefined condition (e.g., no reflections on the machine-readable indicia). Based on a determination that the image quality parameter of the image of the machine-readable indicia does not satisfy the predefined condition, the voltage being applied to the electrochromic component may be adjusted to cause an opacity level of the electrochromic component to be altered. Otherwise, the voltage being applied to the electrochromic component may remain unchanged.

Here discloses a 3D sensing apparatus with Al-controlled Ferroelectric Liquid Crystal beam steering for enhanced dot illumination. The illumination unit for a three- dimensional depth-sensing device includes a light source for emitting an illumination light; a diffuser that diffuses the illumination light into diffused illumination light; and a dual-layer Ferroelectric Liquid Crystal unit, positioned immediately after the diffuser, wherein the dual- layer Ferroelectric Liquid Crystal unit includes a first ferroelectric liquid crystal layer and a second ferroelectric liquid crystal layer, wherein the first ferroelectric liquid crystal layer adjusts a direction of the diffused illumination light, and wherein the second ferroelectric liquid crystal layer corrects a polarization change of the illumination light induced by the first ferroelectric liquid crystal layer. This novel illumination unit features dual-layer Ferroelectric Liquid Crystal technology that enhances the precision and speed of beam steering in 3D depth- sensing devices.