# US 8,540,379 B2 · Image display device and information processing apparatus including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,540,379 B2 - Document ID: US8540379B2 - Status: Granted - Kind: B2 - Application number: 13/037,645 - Filed: 2011-03-01 - Published: 2012-04-19 - Granted: 2013-09-24 - Earliest claimed: 2010-10-15 - Assignees: Panasonic Corporation - Applicants: Nobuo Jikuya; Hitoshi Fujimoto; Ryousuke Araki - Inventors: Nobuo Jikuya; Hitoshi Fujimoto; Ryousuke Araki - Web page: https://patentgrep.com/patent/US8540379B2 ## CPC - H04N 9/3161: {using laser light sources (using laser beams scanning the display screen H04N9/3129)} - G03B 21/142: {Adjusting of projection optics} - G03B 21/145: {Housing details, e.g. position adjustments thereof} - G06F 1/1639: {the display being based on projection} - G06F 1/1649: {the additional display being independently orientable, e.g. for presenting information to a second user} - G06F 1/1656: {Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203)} - H04N 9/3173: {wherein the projection device is specially adapted for enhanced portability} - 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) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract An image display device built into electronic apparatuses, the device including a laser beam source unit emitting laser beams of various colors; a light modulation element modulating the laser beams emitted from the laser beam source unit, based on video signals; a projecting optical system projecting the modulated laser beams formed by the light modulation element on a screen; a control portion controlling the laser beam source unit and the light modulation element; and a movable body provided to be drawn out of and inserted into the case of electronic apparatuses. The movable body includes at least a first unit having the projecting optical system and a second unit rotatably supporting the first unit through a hinge portion. The hinge portion is featured by rotating the first unit. ## Claims ### Claim 1 An image display device built into an electronic apparatus, the image display device comprising: a laser beam source unit emitting laser beams of respective colors; a light modulation element modulating the laser beams emitted from the laser beam source unit based on video signals; a projection optical system projecting the modulated laser beams formed by the light modulation element on a screen; a control portion controlling the laser beam source unit and the light modulation element; and a movable body provided to be drawn out of and inserted into a case of the electronic apparatus, wherein the movable body includes at least a first unit having the projection optical system, and a second unit rotatably supporting the first unit through a hinge portion, and wherein the hinge portion has a two-axis structure and rotates the first unit around a first rotation axis in a direction in which the projection angle of the laser beams to the screen changes vertically and around a second rotation axis in a direction in which the slanting of the images on the screen is corrected. ### Claim 2 (depends on 1) The image display device according to claim 1, wherein the laser beam source unit and the light modulation element are provided in the first unit together with the projection optical system, and the control portion is provided in the second unit or separately provided in both sides including the second unit and the case of the electronic apparatus. ### Claim 3 (depends on 1) The image display device according to claim 1, wherein the electronic apparatus is a portable information processing apparatus and made to be accommodated in an accommodation space formed in the case of the portable information processing apparatus so that the electronic apparatus can be replaced with an optical disc apparatus. ### Claim 4 An image display device built into an electronic apparatus, the image display device comprising: a laser beam source unit emitting laser beams of respective colors; a light modulation element modulating the laser beams emitted from the laser beam source unit based on video signals; a projection optical system projecting the modulated laser beams formed by the light modulation element on a screen; a control portion controlling the laser beam source unit and the light modulation element; and a movable body provided to be drawn out of and inserted into a case of the electronic apparatus, wherein the movable body includes at least a first unit having the projection optical system, and a second unit rotatably supporting the first unit through a hinge portion, and wherein the hinge portion includes a connecting member extending along the first rotation axis, and wherein a case of either the first unit or the second unit connected to the connecting member through axial members as the second rotation axis and the connecting member are respectively provided with opening portions through which an interconnection cable connecting the first unit and the second unit is inserted, and these opening portions are formed so that the insertion area of the cable is secured all the time in a rotation range of the connecting member around the second rotation axis. ### Claim 5 (depends on 4) The image display device according to claim 4, wherein the hinge portion rotates the first unit in a direction where the slanting of images on the screen is corrected. ### Claim 6 (depends on 4) The image display device according to claim 4, wherein the electronic apparatus is a portable information processing apparatus and made to be accommodated in an accommodation space formed in the case of the electronic apparatus so that the electronic apparatus can be replaced with an optical disc apparatus.