19 results about "Diffuse transmission" patented technology

The invention relates to a multi-layer body, comprising (I) a carrier layer made of a special thermoplastic polycarbonate molding compound and (II) a metal layer which has one or more recesses. The invention also relates to a lighting or display unit, comprising the multi-layer body and a light source, to a method for producing the multi-layer body, and to the use of the special thermoplastic polycarbonate molding compound as a carrier layer of such a multi-layer body.

A conveyance device supports and conveys an object. The conveyance device has a support portion in which an opening narrower than the object is provided at a position where the object is supported. A lighting device irradiates a first surface of the object with measurement light having a wavelength changing over time through the opening of the support portion. A light receiving device detects object light that is diffusely transmitted light emitted from a second surface of the object.

The utility model relates to the technical field of candlesticks, and particularly discloses a self-rotating ceramic candlestick which comprises a ceramic base, a circular cover is installed at the upper end of the ceramic base in an embedded mode, the interior of the circular cover is rotationally connected with a rotating cylinder through a bearing, and the outer wall of the rotating cylinder is fixedly connected with a plurality of supporting rods distributed in a circumferential array mode. The other ends of the multiple supporting rods are fixedly connected with ceramic trays, a driving mechanism is arranged on the outer side of the rotary drum, and a round hole is formed in the upper end of the rotary drum in a penetrating mode; corresponding hole positions are selected for insertion according to the thickness of candles, fixation is achieved through interference fit between the hole walls and the outer walls of the candles, insertion and fixation of the candles of different specifications are matched through the multi-section type insertion hole design, and the use applicability of the candlestick is remarkably improved. The transparent material of the crystal ball enables light to generate diffuse transmission, so that a light and shadow atmosphere with rich levels is created, dynamic light and shadow changes are provided, a rich visual effect is formed, and the atmosphere creating capability is effectively improved.

1. The name of the design product: optical measuring instrument. 2. The use of the design product: for optical measurement of various characteristic objects such as diffuse reflection, specular reflection, diffuse transmission, regular transmission, etc. 3. The design points of the design product: in the shape of the product. 4. The picture or photo that best shows the design points: perspective view.

The present invention relates to a method for spectral calibration and correction of an on-orbit grating spectrometer, comprising the following steps: Step 1: Accurate measurement of reference light source characteristics and initial light field modeling; Step 2: In-depth simulation of the light scattering process in a diffuse transmission plate; Step 3: Comprehensive calculation of the process of light transmission to the entrance pupil of the spectrometer; Step 4: Development and implementation of a spectral offset correction strategy. The method for spectral calibration and correction of an on-orbit grating spectrometer of the present invention can complete high-precision spectral tasks and further improve the calibration accuracy. By utilizing the conditions of mercury lamps with different inclinations incident on the diffuse transmission plate of the spectrometer, and performing theoretical analysis and spectral calibration correction, such analysis can complete high-precision spectral calibration. The method for spectral calibration and correction of an on-orbit grating spectrometer of the present invention can improve the precision and accuracy of spectral measurement through precise calculation and analysis, and provide solid technical support for the application of spectral technology in many fields.

Optical measuring method for measuring the transmission and reflection properties of, in particular, large-area translucent objects (1), preferably applicable for process and quality control in the production of surface-coated substrates, wherein - the measurement is carried out with two illuminating devices (7, 9) emitting diffuse light and two photodetectors (4, 14) by either: - a first large area (3) of the object (1) is illuminated with a first of the illumination devices (9) and at the same time the total transmission is measured with a first photodetector (14) and the reflection at this large area (3) is measured with the second photodetector (4), and then - the second large surface (2) of the object (1) opposite the first is illuminated with the second illumination device (7) and at the same time the diffuse transmission is measured with the second photodetector (4) and the reflection at this large surface (2) is measured with the first photodetector (14), or sequentially in any desired order: - a first large area (3) of the object (1) is illuminated with a first of the illumination devices (9) and the total transmission is measured with a first photodetector (14), - the second large surface (2) of the object (1) opposite the first is illuminated with the second illumination device (7) and the diffuse transmission is measured with the second photodetector (4).

1. The name of the design product: optical measurement platform. 2. The use of the design product: for the production process of embossed glass, float glass, photovoltaic cells, optical film, optical plastic and other products, it is necessary to detect and control the quality of optical properties such as diffuse reflection, specular reflection, diffuse transmission, regular transmission, and can also be applied to laboratory research and testing. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention discloses a real-time high-response large-aperture laser space-time parameter measurement method and device, and relates to the field of light spot image processing and optical imaging calculation, and the method comprises the steps: carrying out the light splitting of incident light through a spectroscope, and dividing the incident light into transmission light and reflected light; the transmission light directly enters a diffuse transmission plate right behind the spectroscope, and then respectively enters a spectrograph, a light spot measurement camera and a photoelectric detector; the reflected light is reflected by the 45-degree reflector, is kept parallel to the light path of the transmitted light, enters the aberration-eliminating spherical mirror, and then enters the pointing measurement camera; detection information in the pointing measurement camera, the spectrograph and the light spot measurement camera is transmitted to the industrial personal computer, information in the photoelectric detector needs to be processed by the FPGA timer and then transmitted to the industrial personal computer, and the industrial personal computer processes and analyzes all gathered measurement information in real time. According to the invention, large-aperture laser detection has good real-time performance and responsivity.

The invention relates to the technical field of space remote sensing equipment, and provides a satellite-borne large-view-field visible light camera calibration device. The calibration plate is mounted at the front end of the camera lens hood; the calibration plate control mechanism is installed on one side of the camera lens hood and connected with the calibration plate to drive the calibration plate to be opened or closed relative to the camera lens hood. When the calibration plate is closed, the calibration plate can cover a front-end light path of the camera lens hood, a light source of the calibration plate serves as a uniform radiation source to carry out relative radiation calibration on the camera, and when the calibration plate is opened, the front-end light path of the camera lens hood is not shielded, so that the camera can normally image a space target. For a space dark and weak target observation camera, a calibration system which is installed at the front end of a camera light shield and can be opened and closed is designed, a calibration cover is provided with a brightness-adjustable uniform area light source based on LED active light emitting and diffuse transmission glass, a full-light-path-level relative radiometric calibration device is achieved, and especially relative radiometric calibration under low light and weak light can be achieved.

The present invention discloses a method for measuring the immersion factor of a marine radiance meter, belonging to the technical field of radiation value measurement, including: controlling a stable tungsten halogen lamp to irradiate towards a calibration container below the calibration container, the bottom of the calibration container being a diffusive transmission plate to generate a uniform light field, and the calibration container being filled with ultrapure water; first measuring the radiance value when the optical window of the radiance meter is exactly immersed under the water surface, and then successively discharging the ultrapure water in the calibration container to obtain the radiance value when the distance between the optical window of the radiance meter and the water surface is z i ; performing water body attenuation correction on the measured value of the radiance meter in air and extrapolating to calculate the radiance when z i = 0; calculating the refractive index of the water body and calculating the immersion factor of the radiance meter to be measured. The marine radiance meter immersion factor measuring device of the present invention avoids the problem that in theoretical calculation, only the refractive index of the optical window of the radiance meter is considered and the influence of the optical path design of different radiance meters is ignored, resulting in a large deviation between the theoretical calculation result and the actual value.

This invention relates to a water quality detection device and method for diffuse transmission turbidity and multi-channel colorimetry. The device includes a sample bottle, a turbidity light source, a turbidity light source lens, a turbidity photodetector assembly, a colorimetric channel light source, a colorimetric channel filter, a colorimetric channel spectrometer, and a colorimetric channel photodetector. Light emitted from the turbidity light source passes through the turbidity light source lens and then illuminates the solution in the sample bottle; the light passing through the solution is then detected by the turbidity photodetector assembly. Light emitted from the colorimetric channel light source passes through the colorimetric channel filter and then through the colorimetric channel spectrometer to illuminate the solution in the sample bottle; the light passing through the solution is then detected by the colorimetric channel photodetector. This invention achieves both diffuse transmission turbidity detection and colorimetric channel detection functions on a single instrument, reuses the same photodetector for multiple light sources, significantly reduces costs, and features a compact component layout and small size.

The invention discloses a red light irradiation device for improving eyesight of middle-aged and elderly people, which comprises a shell used for accommodating and fixing a light source assembly, a control circuit board and a battery, the light source assembly comprises a round or oval cavity, a semiconductor light-emitting device and a light diffusion sheet, the inner wall of the cavity is a highly reflective surface, the semiconductor light-emitting device is arranged at the front end of the cavity, and the light diffusion sheet is arranged on the side, close to the eyes, of the rear end of the cavity; the invention relates to the technical field of vision improvement, a point-shaped light source is converted into diffusion transmission light through a light diffusion sheet, local strong light damage is avoided, long-distance irradiation is not needed, and the contradiction between safety and wearing performance of a traditional product is solved; the single-chip microcomputer controls multiple irradiation modes and supports light intensity adjustment and storage, a user can adjust the light intensity to comfortable intensity according to needs, meanwhile, high-frequency irradiation time is automatically limited, simultaneous irradiation of two eyes is achieved through a symmetrical binocular structure, training convenience is improved, and the device is particularly suitable for daily use of middle-aged and elderly people.

The invention discloses a concave grating monochromator system with a mobile spatial filter, belongs to the technical field of optical instruments, and aims to solve the problems of large size and emergent light spot divergence in the prior art. The device comprises an off-axis parabolic mirror, a lens, a small hole, a diffuse transmission plate, an entrance slit, a concave grating and an exit slit. Incident light is collimated into parallel light through the off-axis parabolic mirror and then focused through the lens, light of a wave band with the focus position coinciding with the position of the small hole passes through the small hole and then passes through the diffuse transmission plate to restrain light of non-working wavelength, and light of working wavelength passing through the diffuse transmission plate enters the concave grating through the entrance slit and is emitted through the exit slit. According to the invention, the axial chromatic aberration of the single lens is utilized, the small hole installed at the focus is used as a spatial filter, spatial filtering is carried out on polychromatic light, spectrum aliasing caused by short-wave high-order diffraction is effectively reduced, the size of the seam outlet of the monochromator is reduced, the output light spot is small, and the output monochromatic light can be directly used.

The present invention discloses a concave grating monochromator system with a movable spatial filter, belonging to the field of optical instrument technology. The system aims to address the problems of large size and divergent output light spots in the prior art. The system comprises an off-axis parabolic mirror, a lens, a pinhole, a diffuse transmission plate, an entrance slit, a concave grating, and an exit slit. Incident light is collimated into parallel light by the off-axis parabolic mirror and then focused by a lens. Light in a wavelength band coinciding with the position of the pinhole passes through the pinhole and then passes through the diffuse transmission plate to suppress light of non-operating wavelengths. Light of the operating wavelength that passes through the diffuse transmission plate passes through the entrance slit, enters the concave grating, and exits through the exit slit. The system utilizes the axial chromatic aberration of a single lens, combined with a pinhole mounted at the focal point as a spatial filter, to spatially filter complex light. This effectively reduces spectral aliasing caused by short-wavelength high-order diffraction and reduces the size of the monochromator's exit slit, resulting in a smaller output light spot and enabling direct use of the output monochromatic light.

This light irradiation device comprises: a tubular member that has a longitudinal axis and an internal insertion path onto which a light irradiation body that includes a light irradiation part can be inserted; and a balloon that covers the outside in the radial direction of the tubular member and can expand and contract in the radial direction. The balloon comprises: a light transmission window part that, in an expanded state, can transmit light irradiated from the light irradiation part as inserted onto the insertion path and transmitted by the tubular member in the radial direction; and a light-blocking part that is provided in a region outside the light transmission window part and has a lower transmittance with respect to light from the light irradiation part than the light transmission window part. The tubular member comprises a diffuse transmission part that can diffusely transmit light from the light irradiation part closer to the distal side than a distal end of the light transmission window part in a longitudinal axis direction that runs along the longitudinal axis and closer to the proximal side than a distal end of the balloon in the longitudinal axis direction.

The invention discloses a gastrodia elata quality nondestructive testing system based on a hyperspectral imaging technology, and relates to the technical field of gastrodia elata processing equipment.The gastrodia elata quality nondestructive testing system is characterized in that the system is connected in series according to S1-S6: PRI, BWI and time constants are collected and extracted according to temperature and humidity perturbation and time sequence; thermal / mass diffusion generates a depth weight D (x, y) to inhibit surface dominance; multi-angle reflection and diffuse transmission imaging are carried out to obtain multiple geometric spectrums; carrying out physical micro body rendering inversion in combination with non-negative unmixing, and outputting voxel distribution and virtual slices of water, polysaccharide, gastrodin, p-hydroxybenzyl alcohol, parishin, starch and the like; if not, triggering photoacoustic calibration to obtain density and a cavity mask; the consistency of fusion dynamic, imaging and acoustics is updated through the posteriori of the serial product formula; and generating a TFC fingerprint code through posterior distillation and optimizing few bands, thereby realizing second-level online grading and low-cost deployment. According to the system, dynamic, structural and chemical three-dimensional information is synchronously obtained without damaging a sample, the accuracy, depth resolution and robustness are improved, and the system is suitable for production line quality control and traceability.

The utility model provides a one-lamp double-effect point light source device and a wall lighting system, the one-lamp double-effect point light source device comprises an annular die-casting lamp body, an annular cavity with an upward opening is formed by the annular side wall and the bottom of the annular die-casting lamp body; the first LED light sources are evenly distributed in the circumferential direction of the inner side of the annular side wall, light of the first LED light sources can penetrate through the annular side wall, and forward diffuse transmission illumination is achieved; the second LED light sources are uniformly arranged on the inner side of the bottom in an array manner, U-shaped condensing lenses with outward convex surfaces are packaged on the surfaces of the second LED light sources, and the second LED light sources are used for realizing backward wide-angle reflection illumination; the curved-surface light guide glass is embedded in the opening end face of the annular cavity in a detachable mode to form a sealed optical cavity; wherein the first LED light source and the second LED light source can be independently controlled, independently turned on or simultaneously turned on in a combined manner. According to the utility model, glare can be avoided in a small-scale space, the brightness ratio is reduced, the space oppression is reduced, and the requirements of front lighting effect and backlight are met at the same time.