21 results about "White light" patented technology

A geometric measurement system is adapted to precisely measure one or more surfaces of objects such as corneas, molds, contact lenses in molds, contact lenses, or other objects in a fixture. The geometric measurement system can employ one or more of three possible methods of measurement: Shack-Hartmann wavefront sensing with wavefront stitching; phase diversity sensing; and white light interferometry.

A composite optical device has a layer of a composite optical material mounted on a substrate. The layer of composite optical material has substantially uniform thickness. The composite optical material is a polymer opal, in that it has a three dimensional arrangement of core particles distributed in a matrix, the refractive index of the material of the core particles being different to the refractive index of the material of the matrix and the three dimensional arrangement being capable of having a periodicity such that, when a surface of the material is illuminated with white light, the composite material exhibits structural colour. The local stiffness of the substrate is different at different positions of the substrate. The effect of this is that, on mechanical deformation of the composite optical device, the substrate is deformed to a different extent at different positions of the substrate and the layer of composite optical material is correspondingly deformed to a different extent at different positions of the layer of composite optical material. This provides local variation in the structural colour response of the layer of composite optical material on mechanical deformation of the composite optical device.

The invention discloses a preparation method for a co-doped type and separately-coded type ZnInS/ZnS dual-emitter quantum dot. The preparation method comprises preparation of white-light emitting ZnInS:Ag/ZnS/ZnS:Mn/ZnS and ZnInS:Ag & Mn/ZnS/ZnS/ZnS nano materials, wherein by adopting a core-shell structure, the ZnInS:Ag/ZnS/ZnS:Mn/Zn nano material is synthesized by the following steps of: (1) preparing a color-adjustable ZnInS: Ag core; (2) carrying out core-covering on a first molar layer ZnS; and (3) adsorbing Mn ions and carrying out cover-covering on second and third molar layers; and for the preparation of the ZnInS:Ag & Mn/ZnS/ZnS/ZnS nano material, injecting time of a Mn precursor in the step (3) is advanced to injecting time of an S precursor in the step (1). The preparation method adopts a single-pot thermal injection process, is simple in process, easy to operate, capable of being completed in common chemical laboratories, and easy to popularize; and raw materials are convenient to supply, and are low in price.

The invention discloses Mn<4+> doped fluoroaluminate red fluorescent powder as well as a preparation method and an application thereof. The method comprises steps as follows: hydrofluoric acid and water are added to a polytetrafluoroethylene container, K2MnF6 is added and stirred to be dissolved, and then KF is added; after KF is dissolved, K3AlF6 is added and continuously stirred to be completely dissolved, and then the mixture is continuously stirred for 30 min; the mixture is left to stand after stirring is stopped, suction filtration is performed, a filter cake is dried under the vacuum condition at the temperature of 70 DEG C, and the Mn<4+> doped fluoroaluminate red fluorescent powder is obtained. Compared with the prior art, the K3AlF6:Mn<4+> red fluorescent powder is synthesized in a hydrofluoric acid aqueous solution, and the diluted aqueous solution has a function of purifying the K3AlF6 phase; excessive KF.2H2O is added, so that the K3AlF6 phase is crystallized and separated to be purified in the aqueous solution; the obtained fluorescent powder has a narrow emission spectrum range, and the reabsorption phenomenon is effectively avoided; the phase of the synthesized fluorescent powder is pure, and the light emitting efficiency and collection rate are high; the color gamut range of a white light LED device packaged by the fluorescent powder is wide.

The invention discloses a high-color-rendering-index white light organic light-emitting device and a preparation method therefor. The device comprises a substrate, a positive electrode layer, an organic functional layer and a negative electrode layer from the bottom up in sequence; the organic functional layer comprises a hole transport layer, a blue light emitting layer and an electron transport layer from the bottom up in sequence; the blue light emitting layer is formed by the following two manners: (1) a host-guest doped structure formed by a host material doped with a blue fluorescent light emitting material, wherein the doping mass ratio of the blue fluorescent light emitting material is 1-20%; and (2) a non-doped structure which is formed by a single-layer host material close to the hole transport layer and a singe-layer blue fluorescent light emitting material close to the electron transport layer. According to the device, only one kind of the blue fluorescent light emitting material is adopted to generate blue light; in combination with the hole transport layer and the host material to form electroplex to generate orange light and red light so as to realize white light emission with high color rendering index; and meanwhile, the device structure and the preparation process are simplified, the production cost is lowered, and the spectrum stability of the device is improved.

The invention discloses an LED packaging structure and packaging method thereof. The LED packaging structure comprises a square bracket, wherein an LED chip is arranged at the center of the bowl cup of the bracket; the electrodes of the LED chip are connected with the positive and negative electrodes of the bracket by golden lines; a step is arranged on the bowl cup wall of the bracket; glue filling holes are formed in the four corner of the step; each glue filling hole is communicated to the bottom of the bowl cup; a glass sheet is arranged on the step; one surface of the glass sheet is coated with fluorescent powder; the surface, coated with the fluorescent powder, of the glass sheet faces downwards. The LED packaging structure and the packaging method thereof can be used for not only solving a problem of a yellow ring of white light of an LED, but also solving a problem of luminance decay of the white light of the LED; silica gel is injected into the bowl cup of the bracket by the glue filling holes, the operation is convenient, and the fluorescent powder can not be concentrated near to the LED chip or the bottom of the bowl cup of the bracket, and therefore, the luminance decay of the LED chip, caused by long-time heating, is avoided, and from another point of view, the service life of the LED is prolonged.

The invention provides a pixel defining layer, a fabrication method thereof, an array substrate and a display panel and device, which are used for solving the problem of large-view angle sony in an OLED product in the prior art. The pixel defining layer at least comprises a first defining layer and a second defining layer, wherein the position of the first defining layer is corresponding to the position of a light-emitting layer with first light-emitting color, the position of the second defining layer is corresponding to the position of a light-emitting layer with second light-emitting color,and the thickness of at least one part of the first defining layer is larger than the thickness of the second defining layer. Since the thickness of at least one part of the first defining layer is larger than the thickness of the second defining layer, the light throughput of a part of light rays emitted from the light-emitting layers with the first light-emitting color can be shielded by the first defining layer, so that the duty ratio of light-emitting brightness of the light-emitting layer with the first light-emitting layer is reduced, and white balance of white brightness under a largeview angle is achieved.

The invention discloses an inherent fluorescent precancerous lesion hysteroscopy diagnostic system. The inherent fluorescent precancerous lesion hysteroscopy diagnostic system comprises a main machine, a beam guiding system, a computer and an output device; the inherent fluorescent precancerous lesion hysteroscopy diagnostic system is particularly characterized in that the beam guiding system comprises a cavity inlet light guide, an external cavity light guide and a control device, the cavity inlet light guide is integrally formed by a white light guide, ultraviolet excitation fiber (or LED (Light Emitting Diode) light excitation fiber) and fluorescent feedback fiber which are integrated into the white light guide, a biopsy pipeline, a water injection pipeline and a liquid pumping pipeline; the external cavity light guide is integrally formed by the white light guide, ultraviolet light (or LED light) and fluorescent fiber which are integrated into the white light guide, the water injection pipeline and the liquid pumping pipeline. The inherent fluorescent precancerous lesion hysteroscopy diagnostic system disclosed by the invention not only has the function of a common hysteroscopy, but also has the functions of diagnosing early cancer in endometrium and cervical canal by inherent fluorescence, and more effective and more convenient diagnosis can be provided for a patient.

The invention discloses a moon lamp and a manufacturing method thereof. The moon lamp comprises a lampshade, a lamp holder and a lampshade base, wherein the lamp holder and the lampshade base are disposed in the lampshade; a third control device, a rechargeable battery and a third wireless receiver are arranged in the lamp holder, a suspension connector, an external power input port and a manual switching device are arranged at the top, a white light illuminating lamp, a cold light illuminating lamp and a warm light illuminating lamp are arranged at the bottom, and the rechargeable battery, the third wireless receiver, the external power input port, the manual switching device, the white light illuminating lamp, the cold light illuminating lamp and the warm light illuminating lamp are connected with the third control device; the longitudinal section of the lampshade base is a hollow circle, the lamp holder is connected with the inner wall of the lampshade base through connecting rods,and a perfume putting groove is formed in the circumference of the lampshade base; the top of the lampshade is open and provided with a cover plate. The moon lamp is simple in structure and low in cost, the color temperature can be adjusted according to the temperature, and the brightness can also be adjusted according to the air temperature; meanwhile, the heat of the moon lamp can be utilized togive out the fragrance of perfume to automatically create a suitable atmosphere, and various needs of people are met.

The present application discloses a platform leveling control method, including: acquiring the white light interference fringe pattern of the sample under test, extracting the white light interference fringe pattern according to the white light interference fringe pattern; obtaining the tilt of the measured sample according to the white light interference fringe pattern The orientation angle and the yaw angle; calculate the offset displacement parameter of the platform according to the orientation angle and the yaw angle, and adjust the driving device of the platform according to the offset displacement parameter. The application can calculate the displacement offset feedback of the platform according to the white light interference fringe pattern, and control the driving device of the platform to automatically level the platform, which can replace manual leveling of the platform.

The invention relates to a white light emitting device, a manufacturing method and application thereof. The white light emitting device comprises an ultraviolet light emitting diode chip, first fluorescent powder and second fluorescent powder, wherein the ultraviolet light emitting diode chip is used for generating first radiation; the first fluorescent powder consists of Zn(C3N2H4) powder and is excited through the first radiation to convert a part of the first radiation into second radiation; the second fluorescent powder is excited through the first radiation/or the second radiation to generate third radiation; and the third radiation is mixed with the first radiation and/or the second radiation to form white light. The white light emitting device can effectively brighten a white light source, because only two kinds of fluorescent powder are used, the cost is lower, and the technology for obtaining the white light by allocating the proportion of the fluorescent powder is easier.

The invention provides a light-emitting device and a display device. The light-emitting device extracts light emitted from a side surface (a second light-emitting surface) of a semiconductor light source through a light extraction member, collects the light from the side surface to a top part, emits the light together with a first light-emitting surface to a wavelength conversion member, and emits white light from the top part (a second contact surface) of the wavelength conversion member. After passing through the light-transmitting layer, the white light is emitted through the thickness direction of the light-transmitting layer and the top provided with the light suppression layer, and the top white light is partially suppressed by the light suppression layer. According to the light-emitting device, the overall light emitting intensity can be improved, top light emitting can be partially restrained, the situation that in the prior art, the top is directly and completely restrained, a dark area appears on the top, and an overall brightness loss is too large is avoided, in addition, when the light-emitting device is used in the display device, the light mixing distance can be very small, and the display device is thinner and high in overall brightness.

An imaging unit acquires a white light image by imaging an observation target being illuminated with white light, and acquires a specific light image by imaging the observation target being illuminated with specific light. A light source control unit controls the number of light emission frames of the white light and the number of light emission frames of the specific light in one light emission cycle according to at least one of a moving speed of the imaging unit, zoom information, or a light emission amount.

The invention provides efficient white light emission glass containing silver nanoparticles, and a preparation method thereof. The efficient white light emission glass is composed of the following components by mole: (60-x)% of SiO2, 20% of Al2O3, 20% of CaO, x% of Li2O, 0.2% of Eu2O3 and y% ofAg2O, wherein 0 =< x <= 10; and 0.1 =< y <= 4. The efficient white light emission glass containing the silver nanoparticles is obtained by the steps of preparing materials according to the above molar ratios, grinding the prepared components thoroughly to uniformly mixed; melting the mixture under an air atmosphere; and finally subjecting the melted mixture to conventional molding and annealing. The efficient white light emission glass has the characteristics of simple glass components, high fluorescent intensity, wide excitation wavelengths, and easily adjustable white light color temperature. The white light glass has the characteristics that the melting process is simple and carried out under the air atmosphere and has strong glass-forming force, low cost and no pollution to environment. The color difference caused by different luminescent lifetimes of trichromatic phosphors is solved; and at the same time, the problems of deliquesce and complex coating of conventional phosphors are prevented. The efficient white light emission glass containing the silver nanoparticles can be used for manufacturing novel white light LED illumination and display devices excited by near ultraviolet chips.

The embodiments of the invention disclose a semiconductor laser backlight module and a liquid crystal display. The semiconductor laser backlight module includes a laser light source module, an opticalfiber light homogenizing module, an optical fiber output module and a light guide plate. The laser light source module includes multiple sub-light source groups for outputting a white laser that meets a preset light brightness and a target color temperature value. Sub-optical fiber bundle groups of the optical fiber output module receive white sub-light beams after light homogenizing by the optical fiber light homogenizing module of the corresponding sub-light source groups, form output light beams of adjacent optical fibers from different sub-light source modules and optical fiber output endfaces which are arranged in a line-shaped manner according to a preset optical fiber arrangement mode, and finally are performed butt joint optical coupling with the light guide plate. The semiconductor laser backlight module and the liquid crystal display solve the problem of poor color expression of an LED backlight module, greatly improves the uniformity of the laser backlight illumination inthe light guide plate, significantly reduces interference fringes and speckle effect, and is of great significance for promoting the popularization of the laser liquid crystal display technology.

The invention discloses an LCD (liquid crystal display) backlight plate lampshade. A main body of the lampshade is of a frame; the frame comprises a main face plate, a first side plate and a second side plate; the first side plate and the second side plate are respectively arranged at both ends of the main face plate; connection parts between the first side plate and the main face plate and between the second side plate and the main face plate are integrally connected with the main face plate by arc-shaped plates of concave structures; and the main face plate, the first side plate and the second side plate are composed of outside polyvinyl chloride layers and inside metal frames. The LCD backlight plate lampshade has the following beneficial effects of simple structure, novel design and high machining efficiency; by using the LCD backlight plate lampshade, the consumption of material is reduced effectively, the cost is reduced; in addition, the manpower can also be reduced, and adverse effects of white light spots caused by residual sealant can also be avoided.