39 results about "Facet" patented technology

A field facet mirror for an illumination optic for EUV projection lithography is designed for arrangement in the area of ​​a field plane of the illumination optic. The field facet mirror has a plurality of field facets (25 T ) for the reflective transfer of illumination light (16) from a light source to an object field with a predetermined distribution of illumination light intensity over a field height of the object field. At least some of the field facets are designated as partial field illumination facets (25 T ) executed. These have a partial field illumination facet reflection section (31) for the reflective transfer of the illumination light (16) TF ) as useful illumination light from the light source towards a partial object field section of the object field that is smaller than the object field. Furthermore, the respective partial field illumination facet (25 T) an output-coupling facet reflection section (32) for the reflective transfer of the illumination light (16 AK ) as output illumination light from the light source to at least one output coupling component. The partial field illumination facet reflection section (31) on the one hand and the output coupling facet reflection section (32) on the other hand are fixed components of the respective partial field illumination facet (25). T ) represents. This results in a field facet mirror, which allows for a demanding specification of an illumination intensity distribution over at least one object field coordinate without undesirable side effects.

The present disclosure provides a Group II-VI core-shell quantum dot and a preparation method therefor. A quantum dot shell having a gradient alloy structure is gradually grown by using a precursor that has a reactivity gradient. The gradient alloy structure has a band gap that gradually increases from inside to outside, thereby solving the problem of difficulty in epitaxial growth caused by a decrease in the surface activity of a quantum dot along with an increase in the size thereof. By using zinc halide and octanethiol to regulate crystal facets, the proportion of polar facets on the surface of the quantum dot is increased, and the stability of the quantum dot is significantly improved. Moreover, provided is a low-cadmium quantum dot core. A hot-injection method is used to perform nucleation and growth of ZnSe at a high temperature, a cadmium precursor is then added after the stable nucleation of ZnSe, and cadmium / zinc ion exchange is performed by utilizing the binding energy of selenium / cadmium that is stronger than that of selenium / zinc, thereby forming a CdZnSe ternary core, which can solve the problem of it being difficult for blue-light quantum dots that use CdZnSe as a light-emitting core to cover the pure blue band.

A fixed blade, two-blade broadhead for use on a hunting arrow that employs multiple, flat surface facets that automatically hold the correct bevel angle for edge sharpening when the broadhead is placed upon a sharpening stone.

The present invention relates to a glazing system comprising a vehicle glazing (100), the glazing having a transmission window (111) in a near-infrared range and a diverging lens (20) having a first surface (21) and a second surface (22), opposite the first surface, the second surface (22) being intended to be oriented towards the outside of the glazing, at least one of said first and second surfaces, the diverging lens (20) having a first surface (21) and a second surface (22) being structured, the structured surface comprising a set of structures, in relief, concentric around said optical axis, and according to a radial section of the structured surface, the set of structures form an alternation of facets (210) and counter-facets (211).The diverging lens (20) is arranged and configured so as to receive said emission beam (70) from the LIDAR on the facets of the structures and all or part of the structures, called reference structures, each have facets at an angle Ak with respect to said plane of the diverging lens, the angle Ak of ​​the facets in absolute value increases with the radial distance, each having a height which varies with distance from the optical axis such that the external vertical angular aperture VFOV2 is greater than the initial vertical angular aperture VFOV1 and the external horizontal angular aperture HFOV2 is greater than the initial horizontal angular aperture HFOV1. Figure for the abbreviation: Fig. 1.

The application discloses a kind of facet angle parameter automatic calculation and process parameter mapping method and system, it is related to digital parameter processing technical field;Method includes: the angle difference of each facet junction of lens is acquired in advance;For each facet junction, in the minimum transition bandwidth reference data acquired in advance, according to the corresponding angle difference, form transition bandwidth lower limit list;Based on the optical sensitivity distribution data acquired in advance, form transition bandwidth upper limit list;Based on transition bandwidth lower limit list and transition bandwidth upper limit list, conflict determination and solution are carried out, and form final transition bandwidth list;Based on facet angle matrix and final transition bandwidth list, transition band geometry is generated for each facet junction, and new lens surface model is obtained;The application can consider the dual needs of facet angle keeping and step elimination, so that transition bandwidth adapts to the optical and processing requirements of different regions.

One aspect relates to a plastic lens or lens blank for the manufacture of a plastic lens with a first surface (12) and a second surface (14) opposite the first surface (12), wherein the plastic lens or lens blank has an annular central region (10) and a plano-steep facet (20) surrounding the central region, wherein the plano-steep facet comprises a plano-facet (22) surrounding the central region (10) and a steep facet (24) adjoining and surrounding the plano-facet (22), the plano-facet (22) being formed as a projection of the central region (10), wherein at least one of the surfaces (12, 14) in the region of the plano-facet (22) is arranged substantially perpendicular to a central axis (16) of the plastic lens or lens blank, and the steep facet (24) being formed as a projection of the plano-facet having at least one tip (240).which points away from at least one of the surfaces (12, 14) of the plastic lens or the lens blank in the area of ​​the planar facet (22). Further aspects concern a casting package and a manufacturing process.

The application relates to a virtual reality-based intangible cultural heritage immersive experience method, device, equipment and medium. The method comprises the following steps: acquiring multidimensional data of a target intangible cultural heritage scene; performing grid processing on original three-dimensional point cloud data to obtain an initial three-dimensional geometric model; performing spatial registration on a spectral reflection curve and the initial three-dimensional geometric model to obtain a three-dimensional geometric model containing material spectral properties; analyzing a facet spectral emission curve in combination with a scene space-time cultural database to generate a parameterized physical material library; generating a basic light image in combination with the parameterized physical material library and the scene space-time cultural database according to experience space-time information selected by a user; fusing environmental special effect physical description parameters and the basic light image to obtain a synthesized visual picture result; and generating an immersive experience instruction based on the synthesized visual picture result and environmental special effect data. The method can dynamically adapt to material characteristics and space-time changes of different intangible cultural heritage scenes, and improves the restoration degree of the intangible cultural heritage scene and the user immersion.

The disclosure provides an optical device (2) configured to equip an augmented reality eyewear device (1), comprising a waveguide (4) having spaced apart reflective facets (10) arranged in series in a first direction (S1) and extending in a second direction (S2) that is transverse to the first direction, the waveguide having a front face (6) and a back face (5), further comprising a polarizer (7) facing the front face and having a polarization axis (P) orthogonal to said second direction, the optical device is configured so that light incoming from an external environment of the device and directed from the front face towards the back face has a same polarization state after passing through the polarizer and then the reflective facets, as well as after passing through the polarizer and then zones devoid of reflective facets. The disclosure also provides an augmented reality eyewear device comprising such optical device.

This disclosure relates to a method (100) for fabricating a blazed grating. The method (100) comprises providing a substrate and a patterned mask layer (110) on the substrate, performing primary dry etching (120) of the substrate such that primary ions are accelerated towards a primary etch direction to impinge on the substrate, and performing secondary dry etching (150) of the substrate such that secondary ions are accelerated towards a secondary etch direction to impinge on the substrate. A primary projection of the primary etch direction and a secondary projection of the secondary etch direction onto the grating cross-sectional plane extend perpendicular to one and the other of a blaze facet direction and an anti-blaze facet direction, respectively, and ions accelerated towards a direction with a projection onto a grating cross-sectional plane perpendicular to the blaze facet direction are collimated to form a collimated ion beam for etching the substrate.

A cut stone and its production method, in particular a cut precious or semi-precious stone including a crown topped by a table, a pavilion and a girdle at the intersection of the crown and of the pavilion, of which the surface of facet P2 has a cutting angle comprised between 35° and 45°, of which the surface of facet P4 has a cutting angle comprised between 25° and 35° and of which the ratio between the total height (H) and the diameter or length (L) of said cut precious or semi-precious stone is less than 0.50, preferably comprised between 0.50 and 0.40 and, more specifically, approximately 0.43.

A field facet mirror for an illumination optics unit for EUV projection lithography is embodied for arrangement in the region of a field plane of the illumination optics unit. The field facet mirror has a plurality of field facets (25T) for the reflective transfer of illumination light (16) from a light source towards an object field with a predetermined distribution of an illumination light intensity over a field height of the object field. At least some of the field facets are embodied as partial field illumination facets (25T). These have a partial field illumination facet reflection portion (31) for the reflective transfer of the illumination light (16TF) as used illumination light from the light source towards a partial object field portion of the object field that is smaller than the object field. Furthermore, the respective partial field illumination facet (25T) has an output-coupling facet reflection portion (32) for the reflective transfer of the illumination light (16AK) as output-coupled illumination light from the light source towards at least one output-coupling component. Firstly the partial field illumination facet reflection portion (31) and secondly the output-coupling facet reflection portion (32) represent component parts of the respective partial field illumination facet (25T) that are fixed with respect to each other. This yields a field facet mirror, by means of which a challenging specification of an illumination intensity distribution over at least one object field coordinate is achieved without unwanted consequential effects.

The application relates to a fast prediction method and device for sound scattering characteristics of a complex target under limited beam incidence, which comprises the following steps: constructing a three-dimensional geometric model of the complex target, and dividing the surface into a triangular facet grid; based on the set incidence parameters of the limited beam, calculating the included angle between the direction vector of the triangular facet to the sound source and the beam direction vector, and screening the illuminated facets in response to the included angle being less than half of the beam angle; calculating the scattering contribution of all the screened illuminated facets in the frequency domain, coherently superimposing the scattering contribution, obtaining the frequency domain scattering sound field of the complex target under the limited beam incidence, and interpolating the frequency domain scattering sound field in the wideband frequency range to obtain the wideband scattering response, and calculating the wideband time domain scattering waveform of the complex target under the limited beam incidence. The application can be applied to the near-field incidence condition of the limited beam, can consider the calculation accuracy and efficiency, and can process the underwater target sound scattering characteristics of the complex target geometric shape.

This invention discloses a rendering method, apparatus, device, and storage medium for overlapping surfaces. The method includes: a discretization step: acquiring a 3D model to be processed and discretizing the 3D model to obtain multiple 3D triangular facets; a rendering step: rendering on a 2D canvas based on the position information and color value of each 3D triangular facet; a judgment step: judging whether a new visible facet has been rendered on the 2D canvas; if yes, an adjustment step is performed; if no, a hidden surface removal step is performed; an adjustment step: adjusting the Z-axis coordinate value of the 3D triangular facet corresponding to the new visible facet so that the new visible facet moves along the viewing direction by a set depth offset value, and re-executing the rendering step based on the adjusted position information and color value of each 3D triangular facet; and a hidden surface removal step: inputting all rendered visible facets into a hidden surface removal algorithm to determine the final display style of each visible facet on the 2D canvas.

An apparatus is disclosed that defines and uses a bounding volume to test the intersection of light rays with a displacement microgrid. The bounding volume is indirectly based on a twisted prism consisting of two triangles and three bilinear facets, which encloses the displacement microgrid. Instead of directly detecting intersections with the bilinear facets, tetrahedrons circumscribed in the bilinear facets are alternatively used. The two bases and three tetrahedrons form fourteen triangles. The apparatus tests potential intersections with the displacement microgrid by testing intersections with any one of these fourteen triangles. Various other methods and systems are also disclosed.

Method for manufacturing a semiconductor component, comprising: Forming an insulating layer (24) over a fin structure (26), wherein a first section (28) of the fin structure (26) is exposed by the insulating layer (24) and a second section of the fin structure (26) is embedded in the insulating layer (24); Formation of a dielectric layer (32) over side walls of the first section (26) of the fin structure (26); Removing the first section (28) of the fin structure (26) and part of the second section of the fin structure (26) in a source / drain area, thereby forming a trench (42), and Forming an epitaxial source / drain structure in the trench (42) using a first process or a second process, wherein the first process comprises an improved epitaxial growth process which has an improved growth rate for a preferred crystallographic facet, and the second process involves using a modified etching process to reduce the width of the epitaxial source / drain structure; wherein the semiconductor component comprises an NMOS and / or a PMOS component; wherein, in the case of an NMOS component, the first process is carried out using a CVD process at a high temperature within a range of about 650 to 700 °C and a pressure within a range of about 27 to 47 kPa and / or the modified etching process comprises a CVD etching process carried out using a mixture of GeH4 and HCl with a mixing ratio of GeH4 to HCl within a range of about 0.5 to 1.2 and at a high temperature within a range of about 650 to 750 °C and a pressure within a range of about 0.7 to 13 kPa or using a mixture of SiH4 and HCl with a mixing ratio of SiH4 to HCl within a range of about 0.2 to 0.25 and at a high temperature within a range of about 650 to 750 °C and a pressure within a range of about 0.7 to 13 kPa; and / or wherein, in the case of a PMOS component, the first process is carried out using a CVD process at a high temperature within a range of 600 to 650 °C and a pressure within a range of approximately 0.7 to 7 kPa and / or the modified etching process comprises a CVD etching process using HCl with a flow rate within a range of approximately 50 to 120 sccm, a temperature within a range of 600 to 650 °C and a pressure within a range of approximately 0.7 to 7 kPa.

A light control film includes a structured first major surface opposite a second major surface. The first major surface includes alternating first facets and second facets. Each of the first facets makes an average angle of less than 90 degrees with the second major surface. Each of the second facets makes an average angle of greater than 60 degrees with the second major surface. Each first facet is etched to form first nanostructured facets. Each of the first nanostructured facets includes nano-columns arranged across at least 70% of the first nanostructured facet. A coating layer coated on the first and second facets conforms to the nano-columns of the first nanostructured facets and has an average thickness of greater than 5 nm and less than 200 nm. A cover layer coated on coating layer portions corresponding to the second facets has an average thickness of greater than 0.05 microns.

This invention relates to the field of 3D digital modeling technology, and discloses a method and system for importing and analyzing the 3D model of a crystal workpiece. The method includes: performing data acquisition to obtain a processing depth point cloud of the crystal workpiece; performing refractive geometry correction to generate a machinable mesh model; performing facet and surface segmentation to obtain a set of facets, identifying geometric types and extracting feature parameters, and calculating dihedral angles; mapping the processing features of the crystal workpiece, generating process parameters for each processing feature, and uniformly transforming all feature parameters to the machine tool coordinate system; and outputting a list of processing features. This invention, by performing refractive geometry correction and multi-view point cloud fusion on the processing depth point cloud to generate a machinable mesh model, can provide a 3D model foundation for the crystal workpiece that more closely approximates its real geometric shape, improving the geometric accuracy of the model upon which subsequent processing analysis depends.

A flame effect assembly comprising a reflector element is provided. The reflector element comprises a plurality of facets which are rotatable about an axis. Rotation about the axis effects movement of sequential ones of the facets into optical alignment with at least one light source so as to effect generation of a moving flame pattern on a surface.

This application relates to the field of lidar detection, specifically to a method, apparatus, device, and medium for simulating the lidar scattering cross section of a space target. The method includes: projecting triangular facets onto a pixel plane perpendicular to the incident wave to obtain projected facets with depth attributes; using pixels within the projected facets' bounding rectangle as area pixels, and calculating a weighted average of the depth values ​​of three vertex pixels based on the relative positions of the area pixels within the projected facets to obtain the depth value of the area pixels; selecting the area pixel with the smallest depth value from at least one area pixel corresponding to any pixel in the pixel plane as a visible pixel, and designating projected facets where the ratio of visible pixels to area pixels exceeds a preset visibility threshold as visible facets; and calculating the lidar scattering cross section based on the visible facets. By performing pixel-level depth testing on the facets to identify visible pixels and determine the visible facets, an accurate lidar scattering cross section can be obtained.

An LOE has a first region with a first set of facets, and a second region with a second set of facets at a different orientation from the first set. Both sets of facets are located between a set of parallel major external surfaces. An intermediate region between the faceted regions has a diffractive optical aperture expansion configuration. Image illumination introduced into the LOE from an image projector propagates along the LOE, is redirected by the first set of facets to the intermediate region to expand an optical aperture of the image projector in a first dimension, where the image illumination is deflected to the second region by the diffractive optical aperture expansion configuration such that the optical aperture is further expanded in the first dimension. The image illumination is then coupled out of the LOE by the second set of facets, expanding the optical aperture in a second dimension.

This invention discloses a diffuser ambient light crystal panel, comprising a crystal panel body, wherein the crystal panel body is formed with multiple grooves, and the multiple grooves are evenly distributed on the upper part of the crystal panel body, and the multiple grooves are all concave downwards; the crystal panel body is composed of Durabio® polycarbonate (PC) material, thereby reducing the material thickness through the multiple grooves, making light easier to penetrate, and enhancing the transparency through the refraction of the multiple grooves, making the crystal panel body look lighter and more transparent; the crystal panel body is formed with multiple cut facets, and the multiple cut facets are obliquely distributed on the side of the surface of the crystal panel body.

A reflector assembly includes a central hub; ribs coupled to the central hub that are configured to move between a stowed configuration and a deployed configuration; tensioner elements coupled to the ribs and that are configured to move between a stowed configuration and a deployed configuration; a flexible reflective material attached to the ribs and that includes facets in which each facet is between two adjacent ribs; facet breakers connected to the facets of the flexible reflective material; and at least one tensile element coupling the tensioner elements to the facet breakers. A first facet breaker is connected to a first facet, a first tensioner element is coupled to a first rib and to the first facet breaker, and a second tensioner element is coupled to a second rib and to the first facet breaker.

The present invention relates to a glazing system comprising a vehicle glazing (100), the glazing having a transmission window (111) in a near-infrared range and a converging lens (20) having a first surface (21) and a second surface (22), opposite the first surface, the second surface (22) being intended to be oriented towards the outside of the glazing, at least one of said first and second surfaces, the converging lens (20) having a first surface (21) and a second surface (22) being structured, the structured surface comprising a set of structures, in relief, concentric around said optical axis, and according to a radial section of the structured surface, the set of structures form an alternation of facets (210) and counter-facets (211).The converging lens (20) is arranged and configured so as to receive said emission beam (70) from the LIDAR on the facets of the structures and all or part of the structures, called reference structures, each have facets at an angle Ak with respect to said plane of the converging lens, the angle Ak of ​​the facets in absolute value increases with the radial distance, each having a height which varies with distance from the optical axis such that the external vertical angular aperture VFOV2 is greater than the initial vertical angular aperture VFOV1 and the external horizontal angular aperture HFOV2 is greater than the initial horizontal angular aperture HFOV1. Figure for the abbreviation: Fig. 1.

The application provides a three-dimensional geological body attribute assignment method and system, relates to the technical field of three-dimensional geological modeling, and solves the problems of judgment failure and assignment failure when a complex structure region is encountered in the prior art. The method comprises the following steps: extracting vertex coordinates and index information of all triangular facets on the surface of a three-dimensional geological body model to calculate an axis-aligned bounding box corresponding to each triangular facet; collecting minimum and maximum values of the axis-aligned bounding box in X, Y and Z directions to generate a plurality of to-be-judged points, and generating a vertical ray along the Z-axis direction for each to-be-judged point; retaining corresponding candidate facets and detecting effective intersection points between the candidate facets and the vertical ray; sorting each effective intersection point, determining the stratigraphic attribution of each to-be-judged point according to stratigraphic information of adjacent effective intersection points after sorting, and assigning corresponding attribute values. The application significantly improves the precision of geological attribute assignment.

The application provides a crystal growth device, comprising a crucible with a cavity, a tray structure and a seed crystal arranged in the cavity, the tray structure is arranged between the inner surface of the top wall of the crucible and the seed crystal, the tray structure comprises a first tray area and a second tray area with different thicknesses, the thickness of the second tray area is smaller than that of the first tray area, and the side of the first tray area and the second tray area close to the seed crystal is coplanar, and the spatial position of the second tray area corresponds to the facet growth area of the seed crystal. The application reduces the thickness of the part of the tray structure corresponding to the facet growth area, changes the local thermal conductivity of the thickness-thinned part of the tray structure, makes the local temperature gradient on one side of the facet growth area greater than that of other areas, makes the growth interface at the facet growth area steeper, inhibits the expansion of the facet growth area to the center of the crystal, and thus reduces the area growth of the facet growth area.

The application discloses a diamond processing method, comprising the following steps: selecting a diamond blank for cutting; scraping the diamond blank to form a cylindrical waist part, a nearly conical crown part and a nearly conical pavilion part, and polishing the waist part of the diamond blank into a regular hexagon; the crown angle of the diamond blank is 31-33 degrees, and the bottom angle of the diamond blank is 36-38 degrees; taking a plane L1 as a reference, polishing sixteen crown main surfaces and first to ninth crown surfaces in sequence according to angles of 28-30 degrees, 30-32 degrees, 25-27 degrees, 24-26 degrees, 20-22 degrees, 18-20 degrees, 16-18 degrees, 14-16 degrees, 12-14 degrees and 11-13 degrees, and the plane L1 is a plane where a waist edge of the diamond blank is located; taking a plane L6 as a reference, polishing sixteen pavilion surfaces according to 34-36 degrees, and the plane L6 is a plane where a lower waist edge of the diamond blank is located; and taking the plane L1 as a reference, polishing sixteen lower waist facets and sixteen waist surfaces according to 60-62 degrees, so that the machining loss is reduced and excellent optical performance is ensured.

This invention discloses an automatic trimming method, system, medium, and device for self-intersecting models. The method includes: acquiring an initial bias model comprising multiple triangular facets; performing global self-intersecting detection on the initial bias model, selecting multiple self-intersecting facets from the multiple triangular facets, and determining the sets of intersecting line segments corresponding to each of the multiple self-intersecting facets; determining a set of regular facets to indicate redundant regions of the initial bias model based on the sets of intersecting line segments; dividing the set of regular facets into a set of valid facets and a set of redundant facets based on the multiple triangular facets; and trimming the initial bias model based on the set of valid facets and the set of redundant facets to obtain a target mesh bias model. This invention can improve the efficiency, accuracy, and trimming accuracy of self-intersecting detection.