# US 2021/0240067 A1 · Dome screen, dome screen projection apparatus, and method for fabricating the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0240067 A1 - Document ID: US20210240067A1 - Status: Published application - Kind: A1 - Application number: 17/049,049 - Filed: 2018-04-26 - Published: 2021-08-05 - Earliest claimed: 2018-04-26 - Assignees: Wonder Vision Techno Laboratory Co., Ltd. - Applicants: Wonder Vision Techno Laboratory Co., Ltd. - Inventors: Goro TAMURA - Web page: https://patentgrep.com/patent/US20210240067A1 ## CPC - G03B 21/60: characterised by the nature of the surface - G03B 21/58: collapsible, e.g. foldable; of variable area - 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 A dome screen is formed from a curved screen and a frame for retaining the screen. The screen is formed by connecting a plurality of screen materials produced from a synthetic resin, and the frame is formed from a plurality of components and holds the curved screen in a suspended state using suspensions. Furthermore, a dome screen projection apparatus is configured by further providing a projector for projecting a stereoscopic image onto the dome screen with the stereoscopic image being reflected by a convex reflector. Accordingly, the weight of the components of a screen is reduced, thereby making it possible for even a large screen to be easily assembled, disassembled, and moved. ## Claims ### Claim 1 A dome screen, comprising a curved screen and a frame holding the screen, wherein the screen is formed by joining plural screen members made of a synthetic resin, the frame is formed by plural components and holds the curved screen in a suspended condition. ### Claim 2 (depends on 1) The dome screen according to claim 1, wherein the frame has plural column members and beam members joining the column members, and a lifting member is provided which moves upward and downward through the column member to stop the beam members at an appropriate height. ### Claim 3 (depends on 1) The dome screen according to claim 1, wherein the screen member has a flange being bent backward from an edge portion of the curved-shape face, wherein the flange is joined to a flange of an adjacent screen member. ### Claim 4 (depends on 3) The dome screen according to claim 3, wherein at the flange of the screen member, an adjustment tool is provided to finely adjust a joining position between the screen members being adjacent each other. ### Claim 5 A dome screen projection apparatus, comprising a dome screen and a frame holding the screen, wherein the screen is formed by joining plural screen members made of a synthetic resin, the frame is formed by plural components and holds the curved screen in a suspended condition; and a projector for projecting an image on an inner face of the dome screen. ### Claim 6 (depends on 5) The dome screen projection apparatus according to claim 5, wherein the projector is supported at an upper portion of the frame and is provided with a convex reflex mirror which reflects an image from the projector and projects the image on an inner face of the screen. ### Claim 7 (depends on 5) The dome screen projection apparatus according to claim 5, wherein the projector is held by an adjustment mechanism at the upper part of the frame, which is capable of adjusting the position of the projector forward and backward, upward and downward, and the slant angle of the projector. ### Claim 8 (depends on 5) The dome screen projection apparatus according to claim 5, which further comprises a motion device by which viewers feel ambience depending on projected images. ### Claim 9 A method for producing a dome screen, comprising: installing a basal member of a frame on a base site, standing plural fabrication column members on the basal member, attaching a lifting member to the column member, fixing a beam member to the lifting member, raising the beam member to an intermediate portion of the column member by the lifting member, joining curved screen members of a screen upper portion, suspending the joined screen members from the beam member, further raising the beam member to an upper portion of the column member, joining screen members of a screen lower portion to the joined screen upper portion to integrate them into a dome screen, and holding the dome screen in a suspended condition by the frame. ### Claim 10 A method for fabricating a dome screen projection apparatus, comprising: installing a basal member of a frame on a base site, standing plural joint-type column members on the basal member, attaching a lifting member to the column member, fixing a beam member to the lifting member, setting a projector on the beam member, raising the beam member to an intermediate portion of the column member by the lifting member, joining curved screen members of a screen upper portion, suspending the joined screen members from the beam member, further raising the beam member to an upper portion of the column member, joining screen members of a screen lower portion to the joined screen upper portion to integrate them into a dome screen, and holding the dome screen in a suspended condition by the frame.