# US 10,310,260 B2 · Member for displaying projected image and projection system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,310,260 B2 - Document ID: US10310260B2 - Status: Granted - Kind: B2 - Application number: 15/819,533 - Filed: 2017-11-21 - Published: 2018-03-15 - Granted: 2019-06-04 - Earliest claimed: 2015-05-29 - Assignees: FUJIFILM Corporation - Applicants: FUJIFILM Corporation - Inventors: Yujiro Yanai; Akira Yamamoto; Michio Nagai; Yukito Saitoh; Daisuke Kashiwagi; Nobuhiko Ichihara - Web page: https://patentgrep.com/patent/US10310260B2 ## CPC - G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)} - G02B 5/26: Reflecting filters (G02B5/28 takes precedence) - G02F 1/13718: {based on a change of the texture state of a cholesteric liquid crystal} - G03B 21/60: characterised by the nature of the surface - B60K 2360/334: Projection means - G02B 2027/0123: {comprising devices increasing the field of view} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - 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) - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES ## Abstract Provided is a member for displaying a projected image, including: a first base material; a second base material; and an optical member, in which at least one optical member is disposed on a surface of the first base material or the second base material, the optical member includes a plurality of cholesteric liquid crystal dots, the cholesteric liquid crystal dot is formed of a liquid crystal material having a cholesteric structure, the cholesteric structure imparts a striped pattern formed of bright portions and dark portions in a cross-sectional image of the cholesteric liquid crystal dot taken by a scanning electron microscope in a direction perpendicular to a substrate, the dot includes a portion where the height thereof successively increases to the maximum height thereof from an end portion toward the center thereof, an angle between a normal line with respect to a line formed by the first dark portion from the surface of the dot on a side opposite to the substrate and a line representing the surface of the is in a range of 70° to 90° in this portion of the cross-sectional image, and a reflection center wavelength of the dot is in a range of 400 to 1000 nm. ## Claims ### Claim 1 A member for displaying a projected image, comprising: a first base material; a second base material; and at least one optical member, wherein the at least one optical member is disposed on a surface of the first base material or the second base material, the at least one optical member includes a plurality of cholesteric liquid crystal dots that are separated from, and not in contact with, each other and that are provided on a substrate, the cholesteric liquid crystal dot is formed of a liquid crystal material having a cholesteric structure, the cholesteric structure imparts a striped pattern formed of bright portions and dark portions in a cross-sectional image of the cholesteric liquid crystal dot taken by a scanning electron microscope in a direction perpendicular to the substrate, the cholesteric liquid crystal dot includes a portion where the height thereof successively increases to the maximum height thereof from an end portion toward the center thereof, an angle between a normal line with respect to a line formed by the first dark portion from the surface of the cholesteric liquid crystal dot on a side opposite to the substrate and a line representing the surface of the cholesteric liquid crystal dot is in a range of 70° to 90° in the portion of the cross-sectional image, a reflection center wavelength of the cholesteric liquid crystal dot is in a range of 400 to 1000 nm, the member for displaying a projected image is windshield glass, the at least one optical member is disposed between the first base material and the second base material, both of the first base material and the second base material are glass, and the substrate is a resin film. ### Claim 2 (depends on 1) The member for displaying a projected image according to claim 1, which is used as a combiner of a head-up display. ### Claim 3 (depends on 2) A projection system comprising: the member for displaying a projected image according to claim 2, wherein the cholesteric liquid crystal dots are disposed on a side where projection light is incident. ### Claim 4 (depends on 1) Windshield glass comprising the member for displaying a projected image according to claim 1. ### Claim 5 (depends on 1) A combiner of a head-up display, consisting of the member for displaying a projected image according to claim 1. ### Claim 6 (depends on 1) A projection system comprising: the member for displaying a projected image according to claim 1, wherein the cholesteric liquid crystal dots are disposed on a side where projection light is incident. ### Claim 7 (depends on 1) The member for displaying a projected image according to claim 1, wherein all cholesteric liquid crystal dots are separated from, and not in contact with, each other.