# US 7,072,002 B2 · Rear-project video assembly with a foldable reflector > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,072,002 B2 - Document ID: US7072002B2 - Status: Granted - Kind: B2 - Application number: 10/611,927 - Filed: 2003-07-03 - Published: 2005-01-06 - Granted: 2006-07-04 - Earliest claimed: 2003-07-03 - Assignees: Disk King Technology Co., Ltd. - Inventors: Chen Sung Liao - Web page: https://patentgrep.com/patent/US7072002B2 ## CPC - H04N 9/3141: {Constructional details thereof (details not peculiar to the presence of an electronic spatial light modulator G03B21/14)} - G03B 21/10: Projectors with built-in or built-on screen - G03B 21/14: Details - G03B 21/28: Reflectors in projection beam {(in illumination beam G03B21/2066)} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - 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 rear-project video assembly with a foldable reflector includes a housing and a screen mounted in a first side of the housing. A reflector has one side pivotally connected to a second side of the housing for reflecting image to the screen. An overhead projector is mounted on a bottom of the housing for projecting image to the reflector and a drive device is mounted between the screen and the reflector for expanding the reflector when using the reflector and backward moving the reflector after using the reflector to reduce the volume of the rear-project video assembly. A bellows is mounted between the peripheries of the second side of the housing and the reflector to prevent the foreign matter and the light ray from entering the housing. ## Claims ### Claim 1 A rear-project video assembly with a foldable reflector, comprising: a housing; a screen mounted in a first side of the housing; a reflector having one side pivotally connected to a second side of the housing for reflecting image to the screen; an overhead projector mounted on a bottom of the housing for projecting image to the reflector; a drive device mounted between the screen and the reflector for expanding the reflector when using the reflector and backward moving the reflector after using the reflector to reduce the volume of the rear-project video assembly; and a bellows mounted between the peripheries of the second side of the housing and the reflector to prevent the foreign matter and the light ray from entering the housing. ### Claim 2 (depends on 1) The rear-project video assembly as claimed in claim 1, wherein the overhead projector comprises: a body; a stand having a first end secured on the bottom of the housing and a second end connected to the body for supporting the body; and a lens mounted on the body and facing the reflector for projecting image to the reflector when the reflector is expanded. ### Claim 3 (depends on 2) The rear-project video assembly as claimed in claim 2, wherein the housing comprises an opening defied in the second side of the housing and having a size slightly smaller than that of the reflector such that the reflector can be moved and received in the housing after being used, and the reflector having one side pivotally connected to a top of the housing and corresponding the opening. ### Claim 4 (depends on 2) The rear-project video assembly as claimed in claim 2, wherein the drive device comprises: a motor with one end pivotally connected to the first side of the housing; and a telescope shaft having a first end connected to the motor and a second end pivotally connected to the reflector, the motor driving the telescope shaft to reciprocally move the reflector. ### Claim 5 (depends on 2) The rear-project video assembly as claimed in claim 2 further comprising multiple rollers amounted on a bottom of the housing for easily moving the housing. ### Claim 6 (depends on 1) The rear-project video assembly as claimed in claim 1, wherein the housing comprises an opening defied in the second side of the housing and having a size slightly smaller than that of the reflector such that the reflector can be moved and received in the housing after being used, and the reflector having one side pivotally connected to a top of the housing and corresponding the opening. ### Claim 7 (depends on 6) The rear-project video assembly as claimed in claim 6, wherein the drive device comprises: a motor with one end pivotally connected to the first side of the housing; and a telescope shaft having a first end connected to the motor and a second end pivotally connected to the reflector, the motor driving the telescope shaft to reciprocally move the reflector. ### Claim 8 (depends on 6) The rear-project video assembly as claimed in claim 6 further comprising multiple rollers amounted on a bottom of the housing for easily moving the housing. ### Claim 9 (depends on 1) The rear-project video assembly as claimed in claim 1, wherein the drive device comprises: a motor with one end pivotally connected to the first side of the housing; and a telescope shaft having a first end connected to the motor and a second end pivotally connected to the reflector, the motor driving the telescope shaft to reciprocally move the reflector. ### Claim 10 (depends on 9) The rear-project video assembly as claimed in claim 9 further comprising multiple rollers amounted on a bottom of the housing for easily moving the housing. ### Claim 11 (depends on 1) The rear-project video assembly as claimed in claim 1 further comprising multiple rollers amounted on a bottom of the housing for easily moving the housing.