# US 12,764,259 B2 · Reflective display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,764,259 B2 - Document ID: US12764259B2 - Status: Granted - Kind: B2 - Application number: 18/335,034 - Filed: 2023-06-14 - Published: 2023-12-14 - Granted: 2026-10-13 - Earliest claimed: 2020-07-07 - Assignees: MirraViz, Inc. - Applicants: MirraViz, Inc. - Inventors: Peter M. Baumgart; Stephen Christopher Kekoa Hager; Ye Yuan; Michael Wang - Web page: https://patentgrep.com/patent/US12764259B2 ## CPC - H04N 9/3152: {for shaping the light beam (beam shaping per se G02B27/09)} - G02B 5/09: Multifaceted or polygonal mirrors {, e.g. polygonal scanning mirrors; Fresnel mirrors} - G02B 5/223: {containing organic substances, e.g. dyes, inks or pigments} - G02B 27/0977: {Reflective elements} - G03B 21/10: Projectors with built-in or built-on screen - G03B 21/56: Projection screens - G03B 21/58: collapsible, e.g. foldable; of variable area - G03B 21/60: characterised by the nature of the surface - G03B 21/62: Translucent screens - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) ## Abstract The disclosed technology relates generally to reflective displays, and more particularly to reflective displays configured to display images with customized and improved viewing parameters. In one aspect, a reflective display comprises a plurality of light-reflective microfacets configured to display an image by reflecting light incident thereon from a light source, wherein light rays reflected by different ones of the microfacets are directed in non-parallel directions. ## Claims ### Claim 1 A reflective display comprising: a light reflective layer arranged on a substrate to form a plurality of light reflective microfacets configured to display an image by reflecting light incident thereon from a projector, wherein each of the light reflective microfacets is substantially flat and is connected to a plurality of adjacent ones of the light reflective microfacets through a plurality of side surfaces, wherein the each of the light reflective microfacets shares a common edge with each of the plurality of side surfaces, and wherein the side surfaces have lower reflectivity relative to the light reflective microfacets. ### Claim 2 (depends on 1) The reflective display of claim 1, wherein the light reflective layer forming the side surfaces is configured to transmit or absorb a greater amount of light relative to the light reflective layer forming the light reflective microfacets. ### Claim 3 (depends on 2) The reflective display of claim 2, wherein the light reflective layer forming the light reflective microfacets has a greater thickness relative to the light reflective layer forming the side surfaces. ### Claim 4 (depends on 1) The reflective display of claim 1, wherein at least some of contiguous ones of the light reflective microfacets form protrusions alternating with recesses along a lateral direction along a surface of the light reflective layer. ### Claim 5 (depends on 1) The reflective display of claim 1, wherein at least some of the light reflective microfacets have same or different polygonal shapes. ### Claim 6 (depends on 5) The reflective display of claim 5, wherein the at least some of the light reflective microfacets have same or different rectangular or hexagonal shapes. ### Claim 7 (depends on 1) The reflective display of claim 1, the light reflective microfacets are angled to be in a line of sight of the light projected from the projector to directly reflect the light from the projector, whereas the side surfaces are angled to be out of the light of the light projected from the projector. ### Claim 8 (depends on 1) The reflective display of claim 1, wherein the reflective display is a short throw (ST) or ultra-short throw (UST) reflective display having a width extending in a lateral direction and is configured to be at a distance from the projector in a depth direction perpendicular to the lateral direction, such that a throw ratio between the distance and the width that is less than 1.0. ### Claim 9 A reflective display comprising: a light reflective layer arranged on a substrate to form a plurality of light reflective microfacets configured to display an image by reflecting light incident thereon from a projector, wherein each of the light reflective microfacets is substantially flat and is connected to a plurality of adjacent ones of the light reflective microfacets through a plurality of side surfaces, wherein the each of the light reflective microfacets shares a common edge with each of the plurality of side surfaces, wherein the side surfaces have lower reflectivity relative to the light reflective microfacets, and wherein the light reflective microfacets and the side surfaces form protrusions alternating with recesses, wherein top surfaces of the protrusions and bottom surfaces of the recesses form the light reflective microfacets, and wherein sidewalls of the protrusion and the recesses form the side surfaces. ### Claim 10 (depends on 9) The reflective display of claim 9, wherein the light reflective layer forming the side surfaces is configured to transmit or absorb a greater amount of light relative to the light reflective layer forming the light reflective microfacets. ### Claim 11 (depends on 9) The reflective display of claim 9, wherein the light reflective microfacets have a polygonal shape. ### Claim 12 (depends on 9) The reflective display of claim 9, wherein the display forms the image by reflecting light incident thereon from the projector towards a viewing window, the viewing window defining an area in a viewing plane parallel to a major surface of the reflective display at a viewing distance therefrom, wherein outside of the viewing window, an intensity of the displayed image falls by more than 30% relative to a peak intensity of the displayed image within the viewing window. ### Claim 13 (depends on 12) The reflective display of claim 12, wherein inside of the viewing window, a variation of an intensity profile of the displayed image, in a horizontal or a vertical direction, is within 30% relative to an average intensity of the displayed image within the viewing window. ### Claim 14 (depends on 12) The reflective display of claim 12, wherein a subset of the light reflective microfacets is configured to reflect light rays to cross a viewing region different from the viewing window to form a secondary image different from the displayed image. ### Claim 15 (depends on 14) The reflective display of claim 14, wherein the viewing region does not overlap with the viewing window. ### Claim 16 A reflective display comprising: a substrate having formed thereon a plurality of light reflective elements configured to display an image by reflecting light incident thereon from a projector, wherein each of the light reflective elements comprises a light reflective microfacet and at least two side surfaces, wherein each of the light reflective microfacets shares a common edge with each of the at least two side surfaces, and wherein the at least two side surfaces elevate the common edges shared with the light reflective microfacet relative to edges of light reflective microfacets of adjacent light reflective elements abutting the at least two side surfaces. ### Claim 17 (depends on 16) The reflective display of claim 16, wherein the display forms the image by reflecting light incident thereon from the projector towards a viewing window, the viewing window defining an area in a viewing plane parallel to a major surface of the reflective display at a viewing distance therefrom, wherein outside of the viewing window, an intensity of the displayed image falls by more than 30% relative to a peak intensity of the displayed image within the viewing window. ### Claim 18 (depends on 17) The reflective display of claim 17, wherein the light reflective microfacets are arranged to form a plurality of pixels each including more than two light reflective microfacets, wherein different ones of the light reflective microfacets within at least some of the pixels are configured to reflect light rays to cross unique and non-overlapping regions of the viewing window. ### Claim 19 (depends on 18) The reflective display of claim 18, wherein light rays reflected by at least some of the microfacets of at least some of the pixels crossing the viewing window are distributed to span at least 50% of the viewing window. ### Claim 20 (depends on 17) The reflective display of claim 17, wherein light rays projected from the projector and reflected by microfacets of a matte pixel of the plurality of pixels forms a Lambertian intensity profile along a lateral direction of the view window.