209 results about "Optical efficiency" patented technology

The utility model relates to an LCOS (Liquid Crystal On Silicon) projection device, which comprises a light source module capable of emitting red, green and blue light beams, a polarization filter and an imaging lens which are sequentially arranged along a projection light path, an LCOS chip capable of modulating the polarization state of incident light is arranged on a projection light path between the polarization filter and the imaging lens, and an imaging lens group capable of imaging the incident light onto the LCOS chip is arranged on a projection light path between the light source module and the polarization filter. And a polarization layer capable of transmitting P polarized light and reflecting S polarized light is arranged on the polarization filter. Compared with a polarizing prism applied to a traditional LCOS projection light path, the LCOS projection light path has the advantages that through the arrangement of the polarizing filter and the polarizing layer which is arranged on the polarizing filter and can transmit P polarized light and reflect S polarized light, the LCOS projection light path has higher polarization efficiency, stray light is reduced, and optical efficiency is improved.

The invention discloses a diffractive optical waveguide and a preparation method thereof, and a head-mounted display device, and relates to the technical field of augmented reality, and the preparation method of the diffractive optical waveguide comprises the steps: obtaining a target eye box range adaptive to a target crowd; according to the human eye parameters of each user group in the target group, splitting the target eye box range to obtain sub-eye box ranges adapted to each user group; diffractive optical waveguides adapted to the user groups are prepared based on the sub-eye box ranges, and the area of a coupled-out grating in each diffractive optical waveguide is smaller than the area of a coupled-out grating of an optical waveguide designed for covering the target eye box range. The optical efficiency and uniformity of the diffractive optical waveguide can be ensured, and the diffractive optical waveguide is prevented from generating obvious rainbow lines, so that the use experience of a user is improved.

The invention discloses an imaging type optical system for a high-intensity magnetic field Fourier infrared spectrum device, which comprises a solenoid superconducting magnet tubular sample cavity for the high-intensity magnetic field Fourier infrared spectrum device, and a non-magnetic damping sleeve arranged in the solenoid superconducting magnet tubular sample cavity, a non-magnetic mirror surface gold-plated optical waveguide is arranged at the upper part in the non-magnetic damping sleeve, a Faraday optical module is arranged at the lower part in the non-magnetic damping sleeve, and an adjustable sample bearing table and a low-temperature thermometer and magnetometer assembly are arranged below the non-magnetic mirror surface gold-plated optical waveguide; the non-magnetic mirror surface gold-plated optical waveguide comprises a light-in waveguide and a light-out waveguide, and the Faraday optical module integrates a switchable reflection module and a transmission module which are respectively adapted to different strong magnetic field Fourier infrared spectrum measurement requirements. The optical efficiency of the high-intensity magnetic field Fourier infrared spectrum device is improved, the problems of high optical loss and scattering interference of a traditional device are solved, and the signal-to-noise ratio is increased.

A pumping module of a VCSEL side-pumped solid-state laser and a corresponding solid-state laser. The pumping module uses a design of pumping in an even number of directions, achieves a symmetrical pumping cavity and a mutual reflection chamber, and improves pumping light distribution uniformity. By means of the high reflectivity characteristic of surfaces of VCSEL chips (2) and a packaging substrate and a heat sink (1) therefor, a design in which no independent reflection chamber is provided and the heat sink (1) is integrated is realized, the structure is simplified, and the symmetry of light spots is improved. In addition, a cooling pipe (4) having a frosted outer surface is introduced, so that the uniformity of light beams is further improved by means of a diffusion mechanism, and reflection on the surfaces of the VCSEL chips (2) is used to compensate for possible loss, thereby ensuring that optical-to-optical efficiency is almost unchanged. By using an eccentric pumping structure and an optimized wavelength distribution of the VCSEL chips (2), the absorption uniformity of a crystal rod (200) is further improved; and the uniformity of light beams can be effectively improved, especially when the diameter of the crystal rod (200) is large. The present invention has the advantages of a simple structure, stable performance and good light spot symmetry.

The invention relates to a bottom alignment grating preparation method and a bottom alignment grating, and the bottom alignment grating preparation method comprises the steps: depositing a grating material on a light-transmitting substrate, so as to form a grating material layer on the light-transmitting substrate; etching the grating material layer to form a plurality of grating areas with different heights on the grating material layer; and respectively etching each grating area to the light-transmitting substrate to form a plurality of groups of gratings with different heights so as to obtain a bottom-aligned grating. The partition structure of each grating area of the bottom-aligned grating is bottom-aligned, so that the optical efficiency of an optical device can be improved, and an optical film interference effect caused by a residual film is reduced. The bottom alignment grating can be prepared through the preparation method of the bottom alignment grating provided by the invention.

The invention discloses an air-cooled miniature slab laser based on double-end pumping, and belongs to the technical field of solid laser. Wherein the first conduction cooling single bar and the second conduction cooling single bar are arranged at the upper end and the lower end of the lath laser crystal in a staggered manner to form a double-end pumping structure; after the first fast axis collimation cylindrical lens and the second fast axis collimation cylindrical lens respectively collimate the fast axis directions of the first conduction cooling single bar and the second conduction cooling single bar, partial end surfaces are injected into the lath laser crystal; the first resonant cavity reflector and the second resonant cavity reflector are located at the left end and the right end of the lath laser crystal; the laser injected into the slab laser crystal passes through the resonant cavity mirror and then is subjected to multi-pass back-and-forth oscillation between the first resonant cavity reflector and the second resonant cavity reflector to reach the resonant cavity output cavity mirror. The output monopulse energy is greatly improved, the overall electro-optical efficiency is high, and the system compactness is high.

The invention provides a display panel, a preparation method thereof and a display device. The display panel includes: a substrate; the isolation structure is located on one side of the substrate, and the isolation structure is provided with a plurality of first openings; the light-emitting device comprises a light-emitting functional layer, an auxiliary electrode layer and a second electrode layer which are stacked in sequence; the light-emitting functional layer, the auxiliary electrode layer and the second electrode layer are located in the first opening; the orthographic projection of at least part of the auxiliary electrode layer on the substrate is connected or overlapped with the orthographic projection of the isolation structure on the substrate. At least part of the auxiliary electrode layer fills the gap between the isolation structure and the light-emitting functional layer, so that the film continuity of the second electrode layer is improved, the lap resistance of the isolation structure and the second electrode layer is reduced, and the optical efficiency or brightness of the display panel is improved.

An optical film structure and a display device. The optical film structure comprises: a diffusion film (11), a first prism film (12) arranged on the diffusion film (11), and a second prism film (13) arranged on the side of the first prism film away from the diffusion film (11); the first prism film (12) comprises a first substrate (121) and first prisms (122) arranged on the side of the first substrate away from the diffusion film (11), and an inclination angle (θ1) of each first prism (122) ranges from 60 degrees to 80 degrees; the second prism film (13) comprises a second substrate (131) and second prisms (132) arranged on the side of the second substrate (131) away from the diffusion film (11), and an inclination angle (θ2) of each second prism (132) ranges from 20 degrees to 40 degrees; and a second vertex angle is provided on the side of each second prism (132) away from the second substrate (131), and the second vertex angle is an obtuse angle. The luminance of lateral output light can be improved, so that a corresponding display device can improve the optical efficiency while satisfying specifications of luminance and viewing angle in the TCO certified standard.

The invention provides a projection lens which sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power and a fourth lens with negative focal power from a projection surface to an image source surface along an optical axis, the surface of the projection side of the second lens is a concave surface, and the surface of the image source side of the second lens is a convex surface; the surface of the projection side of the third lens is a convex surface, and the surface of the image source side of the third lens is a concave surface; the surface of the projection side of the fourth lens is a convex surface; the surface of the projection side of the fifth lens is a convex surface, and the surface of the image source side of the fifth lens is a plane; wherein the eccentricity alpha of the fifth lens meets the following conditions: 0 degree lt; alpha lt; the angle is 2.5 degrees; a chief ray incident angle CRA of the projection lens satisfies CRAlt; 3 degrees. According to the projection lens provided by the invention, through specific surface shape matching and reasonable focal power distribution and the design that the fifth lens is set to have certain eccentricity, on the premise that the projection imaging quality requirement is met, the optical efficiency is effectively improved, and the projection uniformity is optimized.

The invention discloses a method and a system for constructing a reflective non-imaging solar concentrating system. The method comprises the following steps of: determining a concentrating system structure and a target energy flux density distribution condition; determining the energy mapping relation between the condenser and the receiver; establishing the energy mapping relation between the reflecting surface and the receiving surface according to the geometrical optical reflection law; according to the to-be-designed energy flux density distribution condition of the receiving surface, determining a mapping relation between an incidence point of the incident light on the reflecting surface and an arrival point on the corresponding receiving surface; deducing a generatrix coordinate iterative formula of the condensing reflecting surface according to the energy mapping relation; coordinates of sampling points on the reflecting surface of the condensation system are calculated and fitted into a curve, and a condensation system reflecting surface model meeting the mapping relation is generated; and performing optical simulation and analysis on the established system model, and feeding back and optimizing the structure of the condensation system according to a simulation result. And the problem of non-uniform distribution of solar concentrating energy flow is solved while relatively high optical efficiency is ensured.

The invention provides a health detection device and method based on a laser light source, and belongs to the technical field of health detection.The health detection device comprises the laser light source, a beam expander, a plurality of detectors and a processor; the beam expander is used for directionally expanding and condensing laser emitted by the laser light source to form small-angle directionally-emitted light beams in multiple directions, and reflected light or transmission light is generated after all the small-angle directionally-emitted light beams irradiate multiple skin positions of a user; the plurality of detectors are used for collecting the reflected light or transmission light corresponding to the position; the processor is used for conducting fusion processing on signals collected by the detector, and a heart rate detection result or a blood oxygen detection result is obtained. According to the invention, the emission angle of the laser light source is small, the electro-optical efficiency is high, the utilization rate of light energy is greatly improved by combining the directional beam expansion and light condensation of the beam expander on light, the plurality of detectors are beneficial to compensating signal drift and trailing phenomena caused by movement, and the static and dynamic detection precision is improved.

The invention discloses a medium and low latitude concentric circle mirror field layout optimization method taking a heat collection tower as a center. The method comprises the following steps: preparing before model establishment; sequentially establishing a heliostat reflection model, a heliostat cosine efficiency model, a heliostat shadow shielding efficiency model and a heliostat overflow efficiency model based on the working principle of the tower type solar photo-thermal power station; establishing a concentric circle mirror field layout optimization model taking the heat collection tower as the center; according to the method, an optical efficiency model of the heliostat is established based on a cosine efficiency model, a shadow shielding model and an overflow efficiency model of the heliostat by combining solar apparent motion parameters; a mirror field layout optimization model with a heat collection tower as the center is established, solution searching is carried out with the help of a genetic algorithm, so that an optimal combination scheme of detail parameters of the mirror field is obtained, the highest annual average optical efficiency is 65.9% under the condition that the rated power of the mirror field with the radius of 350 m is 60 MW, and if the rated power is not fixed, the maximum annual average output thermal power can reach 95.119 MW. And the maximum annual average optical efficiency can reach 73.1%.

A head-up display (HUD) and its image generating apparatus are disclosed. The image generating apparatus includes a light source module, an illumination element, and a light modulation module. The light source module provides a first color beam and a second color beam at different times. The illumination element homogenizes the first color beam and the second color beam to form a first color illumination beam and a second color illumination beam, which are then transmitted to the light modulation module. A first gap distance exists between the light modulation module and the illumination element, and the light modulation module includes a plurality of pixel units arranged in an array. Each of these pixel units can be in an on or off state and receives the first color illumination beam and the second color illumination beam at different times to convert the first color illumination beam or the second color illumination beam into an image beam. The image generating apparatus of the present invention can reduce the risk of overheating and improve optical efficiency.

The invention discloses a vehicle lamp assembly and a vehicle. The vehicle lamp assembly comprises a low beam module and a high beam module. The low beam module comprises a first light guide part, a second light guide part and a third light guide part. The first light guide component is provided with a first incident surface and a reflecting surface; the second light guide component is provided with a first emergent surface; the reflecting surface is arranged in the light emitting direction of the first light incident surface, the first light emitting surface is arranged in the light emitting direction of the reflecting surface, and the reflecting surface is a paraboloid or an ellipsoid; the high beam module comprises a fourth light guide component. According to the optical module, the reflecting surface is arranged on the first light guide part, the first light guide part is a transparent part, the physical loss of light is reduced, the light is transmitted in the first light guide part, the reflectivity of the reflecting surface is high, and the optical efficiency of the optical module is improved; the first light guide component and the second light guide component are integrally arranged, so that the light is prevented from being subjected to medium transformation in the propagation process, the light is always propagated in the same medium, and the optical efficiency of the optical module is improved.

The invention discloses a heliostat field layout optimization method and device, a medium and a product, and relates to the field of photo-thermal power generation. The method comprises the following steps of: discretizing a solar cone into a plurality of light rays, simulating a propagation path of the light rays in a heliostat field by adopting a Monte Carlo ray tracing method, and further calculating shadow shielding efficiency and heat collector cutoff efficiency; calculating the comprehensive optical efficiency of the single-sided heliostats in the heliostat field according to the shadow shielding efficiency and the heat collector cut-off efficiency, and further calculating the annual average optical efficiency and the annual average output heat power of the heliostat field; the annual average optical efficiency and the annual average output thermal power are used as objective functions of a non-dominated sorting genetic algorithm, heliostat field layout is optimized, and a Pareto optimal solution set is obtained; and a weighted maximum satisfaction method is adopted to make a decision, and an optimal layout scheme of the heliostat field is selected from the Pareto optimal solution set. By improving the accuracy of optical efficiency calculation in the heliostat field layout optimization process, the energy efficiency of the heliostat field is maximized.

The invention discloses a system for eliminating ghosting head-up display based on a polarization body holographic optical waveguide. The system comprises a high-selectivity P light reflecting film, a circular polarizer, a polarization body holographic optical waveguide structure, a projection image source and head-up display windshield glass, a high-selectivity P light reflecting film is arranged in the head-up display windshield glass; the emergent light of the projection image source enters the in-coupling grating of the polarization body holographic optical waveguide structure and enters the circular polarizer through the out-coupling grating of the polarization body holographic optical waveguide structure, and the emergent light of the circular polarizer is reflected by the high-selectivity P light reflecting film in the head-up display windshield glass. The method and thought are provided for existing diffraction optical waveguide type head-up display and image quality optimization design thereof, the imaging quality is improved, the process complexity is reduced under the condition that the size advantage of the diffraction optical waveguide is expanded, an optical system with optical efficiency and low ghosting phenomenon is expected to be achieved, and technical support is provided for development of near-to-eye display equipment.

The utility model discloses a glue supply structure for delaying powder sedimentation for an LED packaging system, which comprises a glue tube, a glue outlet head communicated with the glue tube is mounted at one end of the glue tube, a glue tube sleeve head is mounted at the other end of the glue tube, a push rod is in threaded connection with the glue tube sleeve head, one end of the push rod is arranged outside the glue tube and is rotatably provided with a connecting pin, and the other end of the push rod is provided with a connecting rod. The other end of the push rod is arranged in the rubber tube and provided with the push rod head, the push rod is rotationally connected with the connecting pin, and meanwhile the push rod is in threaded connection with the rubber tube sleeve head, so that the push rod rotates while moving linearly, and the push rod can drive the push rod head to move linearly and rotate in the rubber tube. According to the utility model, the rubber material in the rubber tube is extruded through the rubber outlet head, and meanwhile, the stirring blade structure on the push rod head can rotate along with the push rod head to stir and mix the powder in the rubber material with the rubber material, so that the condition that the powder in the rubber material settles is avoided, the loss of the optical efficiency of the LED plate can be avoided, and meanwhile, the yield and the consistency of the LED plate finished product are improved.

The utility model discloses an optical system and a projection device, and relates to the technical field of optics, and the optical system is provided with a first light-emitting assembly, a spectroscope, a collimating lens group, a fluorescent wheel and a second light-emitting assembly which are sequentially arranged along a first direction, and the second light-emitting assembly is located at one side of the spectroscope along a second direction; the spectroscope is obliquely arranged, and a reflecting part is arranged on the side face, facing the fluorescent wheel, of the spectroscope; the fluorescent wheel comprises an aluminum substrate, the aluminum substrate is configured to rotate around a rotating shaft, the rotating axis of the aluminum substrate is parallel to the first direction, a groove is formed in the side, facing the collimating lens, of the aluminum substrate, and the inner wall face of the groove is coated with fluorescent powder; according to the optical system, the first light-emitting assembly, the spectroscope, the collimating lens group, the fluorescent wheel and the second light-emitting assembly are reasonably distributed, and the groove is formed in the aluminum substrate, so that the optical system is good in light source uniformity and high in optical efficiency.

An optical system is provided. The optical system includes a light emitting diode that generates light emissions. The optical system includes a collimator that receives the light emissions and that generates a collimated beam. The optical system includes an etendue re-shaper that splits the collimated beam into beam parts and that arranges the beam parts adjacent to each other to generate an adjacent beam part arrangement. The optical system includes micro-lens arrays that receive the adjacent beam part arrangement and that generate beams. Each of the beams includes an optimum optical efficiency or a far field intensity distribution.

The invention relates to the field of optical display and material engineering, in particular to an optical film with a 3D light splitting function and a manufacturing method of the optical film. An optical film with a 3D light splitting function comprises a transparent optical base material and a microstructure layer integrally formed with the surface of the transparent optical base material, the microstructure layer comprises a cylindrical lens grating layer and a parallax barrier layer, and the cylindrical lens grating layer is integrally formed on the surface of the transparent optical base material. The cylindrical lens grating layer is of a micro-nano structure formed by a nano-scale grating and a micron-scale cylindrical micro-lens array; the parallax barrier layer is located on the side, away from the transparent optical base material, of the cylindrical lens grating layer. The optical film has excellent optical efficiency, wider visual angle, excellent brightness uniformity and excellent moire inhibition capability, has 2D / 3D switching, peep-proof and other functions, can adapt to light requirements of different scenes, can serve as a core display optical element to be directly integrated in various display devices, and has wide application prospects. And the application limitation of an externally-pasted protective film is broken.

The invention discloses LED display equipment and a manufacturing method thereof. The equipment comprises a first light-emitting layer series and a second light-emitting layer series, the first light-emitting layer comprises a plurality of first light-emitting units, a first metal reflecting layer, a plurality of first pixel electrodes and a plurality of first metal reflecting patterns, the first pixel electrodes and the first metal reflecting patterns are arranged on one side and the other side of the first light-emitting units respectively, and the first metal reflecting layer surrounds each first light-emitting unit; a first light emitting area is formed between the first metal reflection pattern and the first metal reflection layer; the second light-emitting layer comprises a plurality of second light-emitting units, a second metal reflecting layer and a plurality of second pixel electrodes, the second pixel electrodes are arranged on one sides of the second light-emitting units, the second metal reflecting layer surrounds each second light-emitting unit, and the projection of the second light-emitting units falls into the projection of the first metal reflecting pattern. The display contrast of light rays with different colors in the LED display equipment can be improved, and the optical efficiency can be improved.

The present disclosure relates to an eyeglass display system (1) for displaying a virtual image in a user's field of view, comprising: a screen unit (2) for emitting light (34) as computer-generated image information, the screen unit (2) having at least a first color line and a second color line, each color line having a different color (14, 11), each color having at least one row of color pixels extending along the color line; a scanning deflection unit (3) for scanning the screen unit (2) and for deflecting the computer-generated image information emitted from the scanned screen unit (2) into the user's eyes; wherein the electro-optical efficiency of the color pixels of the first color line is lower than the electro-optical efficiency of the color pixels of the second color line, and the first color line has at least one more row of color pixels than the second color line, so as to compensate for the difference in electro-optical efficiency, thereby providing an eyeglass display system (1) with improved efficiency.

The embodiment of the invention discloses a signal lamp and a light control system. The signal lamp comprises a bowl-shaped reflecting cover, the bowl-shaped reflecting cover comprises n reflecting areas, and the focal positions of the reflecting areas are not overlapped; the n light sources are arranged at the focal positions of the light reflecting areas in a one-to-one correspondence manner; wherein n is an integer greater than or equal to 2. According to the embodiment of the invention, the bowl-shaped reflecting cover is divided into a plurality of reflecting areas with non-overlapped focuses, and the corresponding light sources are arranged at the focus positions of the reflecting areas in a matched manner, so that the problems of low optical efficiency and poor lighting uniformity caused by out-of-focus arrangement of the light sources of the existing multifunctional signal lamp are solved.

The utility model provides a lamp strip which comprises a strip body and a light-emitting element, the strip body is provided with a cavity with an opening in the length direction of the strip body, a diffusion piece is arranged at the opening, and the inner surface of the side wall, in the length direction, of the strip body is provided with a reflecting surface; the light-emitting element is arranged in the cavity, and first light rays emitted by the light-emitting element are reflected by the reflecting surface and then are emitted out of the belt body from the diffusion piece; wherein the outline of the reflecting surface on a first cross section conforms to a first curve, and the first cross section is perpendicular to the length direction of the belt body. The lamp strip can achieve the purposes of giving consideration to the light emitting uniformity, improving the optical efficiency and reducing the width of the lamp strip.

The invention provides a PPG module, a PPG signal measuring method and electronic equipment, and relates to the technical field of electronics. The PPG module in the application comprises a central device which is a light emitter or a light receiver; the three reference devices are arranged on the periphery of the central device and located in different directions, and the type of the reference devices is the same as that of the central device; and the reference devices are arranged in each reference area, the reference area is the position where an included angle space formed by two adjacent reference devices in the three reference devices and the central device is located, and at least one reference device matched with the central device is arranged in the reference area. By adopting the PPG module provided by the invention, the number of optical measurement channels of each light emitter in the PPG module can be increased, the optical efficiency of the light emitters is improved, and the accuracy of human body parameter measurement of the PPG module is improved.

The present application relates to a kind of methods for eliminating the speckle of computer holography using phase probability control optimization algorithm, the key parameters of computer holographic image, the key parameters of computer holographic image include root mean square error of computer holographic image, standard deviation and optical efficiency, update cost function;Update mask phase, based on mask phase, use Rayleigh-Sommerfeld diffraction integral to calculate the diffraction from input surface to target surface, determine whether the holographic image of output surface contains speckle;If it contains speckle, the next iteration is carried out, and finally the holographic image without speckle is obtained.The present application can effectively eliminate the inherent speckle existing in computer holographic imaging, design and process the phase device for eliminating speckle using the proposed holographic optimization algorithm, and use it for holographic lithography, expand the practical application scenarios of computer holography technology.

This application provides an optical waveguide and a near-eye display device. The optical waveguide includes a waveguide substrate, a coupling region, a coupling out region, and a range extender layer. The waveguide substrate includes a first surface and a second surface facing each other. The coupling region is formed on the first surface of the waveguide substrate for coupling incident light into the waveguide substrate. The coupling out region is formed on either the first or second surface of the waveguide substrate and couples out light propagating in the waveguide substrate. The range extender layer is disposed on the second surface of the waveguide substrate. The refractive index of the range extender layer is greater than that of air and less than that of the waveguide substrate. The range extender layer is used to reflect light incident from the waveguide substrate into the range extender layer, and the incident point of the reflected light on the first surface is located outside the coupling region. This application can prevent light coupled into the optical waveguide from re-entering the coupling region, thereby improving the optical efficiency of the optical waveguide and reducing the manufacturing cost and weight of the optical waveguide.

The present application provides a metasurface, a design method, a design device, and an electronic device thereof, wherein the metasurface includes a substrate, a plurality of negative nanostructures disposed at different locations on one side surface of the substrate, and the depth of the plurality of negative nanostructures is less than the thickness of the substrate. The metasurface is provided with an antireflection film, which covers the area of ​​the one side surface of the substrate where the negative nanostructures are not disposed. The metasurface provided with an antireflection film can achieve the original metasurface function while improving the transmittance of electromagnetic waves within the working band, thereby improving the optical efficiency of the optical system using the metasurface.

The invention provides an arylamine compound and an organic electroluminescent device thereof, and particularly relates to the technical field of organic photoelectric materials. The compound disclosed by the invention has good hole transport capability, and can improve the transport efficiency of holes in a device when being applied to a hole transport layer in the device, so that maximum recombination of current carriers is realized; and meanwhile, the energy barrier of the hole in the injection process is reduced, and the hole injection efficiency is improved, so that the luminous efficiency and the service life of the device are improved. The compound provided by the invention has good film-forming property and thermal stability, can improve optical efficiency and reduce loss of light reflected by a nearby electrode during luminescence when being used in a covering layer, and improves the performance of a device. The preparation method of the compound is simple, raw materials are easy to obtain, and the compound can be widely applied to the fields of organic thin film transistors, panel display and the like and has good application effects and industrialization prospects.

Methods and devices including a die with a segmented transparent conductive oxide structure and / or a distributed bragg reflector (DBR) may improve optical efficiency and / or reflectivity of the system. The process of fabricating such a die has an improved workflow that may decrease the number of steps and / or masks used, such as by simultaneously depositing and / or patterning one or more structures in the die which may conventionally require more than one step. In this way, the luminous flux of the completed die is improved while the cost of production is decreased.