265 results about "Light characteristic" patented technology

In a method for measuring a dimension or angle of a scattering feature of an optical device, such as a photonic crystal, at least part of the array is irradiated with light. A characteristic of light scattered from the array is detected. A comparison algorithm is run on the detected characteristic of the scattered light. The comparison algorithm provides one or more numerical values indicative of the measured dimension or angle. A system for measuring a dimension or angle of a feature of an optical device includes a light source and optics for focusing light from the light source onto a target area of the optical device. A light detector is positioned to detect scattered light from the target area, with the detected light used to create a measured light characteristic. A computer linked to the light detector performs a comparison algorithm on the measured light characteristic and outputs a numerical value of the dimension or angle measured. In method for designing an optical device, such as a photonic crystal for use on an LED, an intended scattered response based on light emission characteristics desired from the optical device is simulated. One or more design parameters of the optical device are varied. An interim reflectance response of the optical device with variation of the parameters is determined. Interim scattered responses are compared to the intended scattered response. One or more scattered responses which match the intended scattered response are selected. An optical device is designed using one or more of the design parameters associated with the selected interim scattered response.

An image display device of the present invention is provided with a liquid crystal display panel for displaying an image in accordance with an input of a chrominance signal, a sensor for sensing light characteristics of external light, and a chrominance signal converter for converting a chrominance signal to be inputted into an image display section in accordance with an output of the sensor. The chrominance signal converter includes a target display color setting section for setting a color to display as an image agreeable with chromatic adaptation characteristics of human, according to the output of the sensor, and a color reproduction section for reproducing a target color set by the target display color setting section, by using three primary color with chromaticities suitable for the output of the sensor. The target display color setting section converts the chrominance signal into a chrominance signal of the target display color reproduced by the color reproduction section. Provided is an image with color tone, in which no change is sensed by a user, even if external light condition, that is the light characteristics of the external light.

The invention discloses a section-variable metal lattice structure and a machining method thereof. The section-variable metal lattice structure comprises a plurality of section-variable lattice units arranged in the space. Each section-variable lattice unit is formed by connecting a plurality of section-variable rod pieces. The section-variable metal lattice structure is formed by conducting sintering layer by layer through a laser melting technology. A working bin of a metal powder sintering machine is kept sealed before machining with nitrogen being protection gas. For the internal force characteristics of all parts of the rod pieces, the rod pieces of the metal lattice units are optimized. Compared with an even lattice structure formed by weaving and welding metal wires, the section diameter of the section-variable rod pieces in the section-variable lattice structure is accurately determined by the internal force condition needing to be met under the load condition, materials forming the section-variable rod pieces are increased or decreased according to the stress gradient in the section-variable rod pieces, powder materials are saved, and the light characteristic is improved.

A backlight system for a backlit display, the system comprising a plurality of backlight units corresponding to an adjacent region of a backlit display, each unit having at least one light emission source; and a controller for individually controlling each backlight unit to vary at least one light characteristic of light emission from each backlight unit, wherein the at least one light characteristic is defined by determining at least one predefined parameter of light for each of a plurality of regions of an image to be displayed on a backlit display, the regions of the image corresponding to an adjacent backlight unit.

A lighting arrangement for presentation of a first object is disclosed. The arrangement comprises an accent lighting assembly and a decoration lighting assembly. The accent lighting assembly is arranged to provide illumination of the first object, has at least one accent light characteristic, and comprises at least one accent light generating device. The decoration lighting assembly is arranged to provide background lighting of the first object, has at least one decoration light characteristic, and comprises at least one decoration light generating device. The arrangement also comprises at least one sensor, arranged to detect a distance between the sensor and a second object and to generate a signal value representing the distance, and a controller arranged to receive the signal value from the at least one sensor and to adapt the accent light characteristic and the decoration light characteristic based on the signal value. Corresponding use, method and computer program product are also disclosed.

An image processing and controlling system is provided in the present invention. In addition to adjusting the image displaying modes according to the ergonomic look-up table, the present invention is further capable of adjusting the weighting value with respect to each image characteristic value of an initial image according to lighting characteristics of an ambient light system such that a display unit can provide the most comfortable viewing conditions and the best image quality under different ambient lighting characteristics. In another embodiment, the present invention further functions to control the ambient light system according to the image characteristics of the weighted output image. By means of the foregoing dual controlling ways, the image processing and controlling system may provide appropriate output images corresponding to different viewing scenario and conforming to the requirement of output quality.

The present disclosure is directed towards a multimedia system comprising a multimedia reader. The multimedia reader may be configured to read multimedia content and to extract light surround content. The light surround content may represent a light surround control signal. The light surround content may be extracted from the multimedia content. The multimedia reader may also be configured to output the light surround control signal. Further, the multimedia system may also include one or more light emitting devices. Each light emitting device may be in communication with the multimedia reader. Each light emitting device may be configured to receive the light surround control signal and to control a light characteristic based upon, at least in part the light surround control signal. Numerous other embodiments are also within the scope of the present disclosure.

A camera attachment is configured, adapted and/or operative to compress a pliant object or subject for allowing photographing of the object therethrough by the camera to which the camera attachment is coupled. The camera attachment allows the user to apply a variable compressive force to an object to be photographed through application of a compressive force on the camera. The variable compressive force applied by the user on the camera is translated to a compression portion of the camera attachment and onto the object. The compression portion includes a compression plate that is composed of a material suitable for the functions and/or features described herein and particularly of a material having light characteristics that range from minimally opaque to entirely translucent for photographing the object it is compressing. Additionally, the overall length of the camera attachment is variable through adjustable length support structures such that the distance between the camera lens and the compression plate may be changed. The lens-to-compression plate distance is thus variable, ranging from a minimum lens-to-plate distance to a maximum lens-to-plate distance. These parameters are controlled by size of the camera attachment. The adjustable length support structures of the camera attachment are independently adjustable and independently releasably fixable in length. Also, one or more support structure may carry representations and/or markings for providing one or more of a scale, reading, position and/or camera parameter and/or setting.

Embodiments of the present invention provide a display method of a mobile terminal and the mobile terminal, the method comprising: detecting light feature information of the environment where the mobile terminal is located; and identifying environmental information of the environment where the mobile terminal is located according to the light feature information Calculating target display parameters matching the environmental information, wherein the target display parameters include at least one or more of saturation, color temperature, and brightness; adjusting the display mode of the mobile terminal according to the target display parameters. The display method of the mobile terminal provided by the embodiment of the present invention, on the one hand, adjusts the display mode of the mobile terminal adaptively to the environment, and does not add a warm-colored mask to the display interface, and does not need to stick a film on the screen, which can ensure On the other hand, the display is adaptive to the environment, which improves the utilization rate of display performance, reduces the intensity, component and other attributes of blue light, and realizes the filtering of blue light.

The present invention belongs to a detection and analysis method, in particular to a detection and selection method for the quality and reliability of a high power semiconductor laser and an array laser. Firstly, a V-I curve and a P-I curve of the laser are measured; an electrical derivative curve IdV/dI-I and a light derivative curve dP/dI-I and d<2>P/dI<2>-I are obtained through computer processing. Then the threshold current Ith of the measured device is obtained from the light derivative curve d<2>P/dI<2>-I or the electrical derivative curve IdV/dI-I. So the parameters of b, m, Rs1, Rs2 and h are obtained. A light characteristic when the laser is lased is given from a peak height H, a peak width W and a peak height-width ratio O at the threshold of the second order light derivative curve. Finally, the obtained parameters are compared with the normal value of parameters of the device same structure to judge the quality and reliability of the detected high power semiconductor laser or the array laser. The device filtration of the present invention is characterized by no-wear, high-speed and convenience, which is suitable for wide application.

In a light modulating plate, a backlight assembly having the light modulating plate and a display device having the light modulating plate, the light modulating plate includes a light modulating layer and a light characteristics improving member. The light modulating layer includes a foam layer to modulate a light. The light characteristics improving member is integrally formed with the light modulating layer to improve optical characteristics of the light that has passed through the light modulating layer. Therefore, the backlight assembly is easily fabricated, and an image display quality is improved.

A process to create a fungible global standard for diamonds and gemstones. The process involves grouping diamonds in an investment standard according to their gemological, proportional, optical and light behavior characteristics. Diamonds that conform to the investment grade standard are interchangeable within a specific size range according to an equivalent monetary bundling process. Diamonds subjected to the standard conform to a holistic set of gemological, proportional, optical and light characteristic requirements that enables diamonds to be classified into a extraordinarily homogeneous, visually indistinguishable and highly fungible group which can be used to create baskets of diamonds to form an index/benchmark for diamond pricing, financial instruments, and a standard that can be used for certifying diamonds as investment grade to insure quality.