Abstract: A light source device includes: a laser light source; a circular substrate which has fluorescent body that emits light by using light from the laser light source as excitation light; a wheel motor which rotates circular substrate; a dichroic prism which transmits the light from fluorescent body while reflecting the light from the laser light source; a diffusion plate which diffuses the light from the laser light source; and a plate spring which interconnects diffusion plate and wheel motor.

Abstract: An illuminating device includes: light source (101); light guiding means (102) where light from light (101) is supplied to one end surface, and light incident from the one end surface is propagated inside to exit from the other end surface; illuminating optical systems (103 to 107) that form an optical image formed on the other end surface of light guiding means (102) on display element (22); reflective polarizing plate (109) that is located between illuminating optical systems (103 to 107) and display element (12), and transmits first polarized light while reflecting second polarized light whose polarized state is different from the first polarized light toward illuminating optical systems (103 to 107); phase plate (108) located between light guiding means (102) and reflective polarizing plate (109); and reflecting means (21) that is located on a side opposite the one end surface of light guiding means (102), and reflects, among lights by reflective polarizing plate (109), light incident via phase plate (108

Abstract: A lens cleaning mechanism according to the present invention comprises: a cleaning unit (1a) that covers a standby area being a part of the surface of a front lens element (11), as the standby area is pressed, the cleaning unit (1a) being rotationally moved along the surface of the front lens element (11) to slide over the entire surface of the front lens element (11), including a remaining part of the surface and the standby area; a drive unit (3) connected to a holding member (1b); and a control unit (2) for rotationally moving the cleaning unit (1a) by driving the drive unit (3).

Abstract: A projector includes: a mounting unit for mounting optional unit (2) having an extension function section, connection substrate (7), and cable (6) for electrically connecting the extension function section and connection substrate (7); mother substrate (31) having connector (31a) to which terminal (7a) is electrically connected; Z-shaped guide metal fitting (40) located on the mounting unit and configured to movably guide terminal (7a) to connector (31a); and a case having mother substrate (31) located therein. One side face of the case has an opening for inserting/removing optional unit (2) into/from the case, and a side panel for covering the opening being removably located in the opening. When optional unit (2) is inserted into the case from the opening, connection substrate (7) is guided by Z-shaped guide metal filling (40), and optional unit (2) functions when terminal (7a) is electrically connected to connector (31a).

Abstract: The object of the invention is to realize highly efficient cooling by enhancing the heat transfer rate between optical parts and cooling air, and by simultaneously lowering the temperature of atmosphere around the optical parts. For this purpose, a first wind outlet for blowing a cooling wind is provided so as to allow the cooling wind to pass through optical parts, and furthermore, a second wind outlet for blowing another cooling wind so as to interfere with the cooling wind from the first wind outlet at the optical parts is provided at a location different from that of the first wind outlet.

Abstract: A safe, highly bright projector is to be implemented. A projector directs a light beam from a light source (101) to an image modulating device (105), and magnifies and projects an image formed at the image modulating device (105) through a zoom lens (102). This projector has a light transmitting window (103) movably disposed in front of the surface of the light outgoing side of the zoom lens (102) along the optical axis. The projector further has a window position control unit (108) to control the position of the light transmitting window (103) so as not to change the light beam region that appears on the outer surface of the light transmitting window (103) as the focal length of the zoom lens (102) is varied.

Abstract: A cooling apparatus for a liquid crystal image display having a liquid crystal unit includes an incident-side polarizing plate, a liquid crystal panel and an exit-side polarizing plate. The incident-side polarizing plate, the liquid crystal panel and the exit-side polarizing plate are disposed side by side with a gap therebetween to have the same in-plane direction. A first cooling unit feeds an air stream in an orientation of the in-plane direction, and a second air cooling unit feeds an air stream in the in-plane direction in a different orientation from the air stream by the first air cooling unit. The first air cooling unit and the second air cooling unit are set such that the first and second air stream collide with each other between the incident-side polarizing plate and the liquid crystal panel and/or between the liquid crystal panel and the exit-side polarizing plate.

Abstract: It is possible to reliably prevent dust particles from becoming attached to optical components and it is also possible to suppress temperature rises in optical components. A projection type display device according to the present invention includes a plurality of optical components (20, 21, 24, 30, and so on), a hollow structure (45, 50, or the like), and an air blow source (19, 46, or the like). The plurality of optical components are provided along the optical axis direction of light emitted from a light source. The hollow structure includes optical components (20, 24) that are to be protected from the attachment of dust particles to optical components among the plurality of optical components, and forms an enclosed space separated from the surroundings. Then, the source that blows air is provided in the inside of the enclosed space to circulate the internal air for cooling targets.

Abstract: An electronic device of the present application includes a case, leg that has a hollow stem portion, and leg fixing part. Leg fixing part is a part that is formed in one face of case and that has a hole into which leg is inserted and that includes case thread ridge portion formed on an inside face of the hole. Leg has first screw structure portion and second screw structure portion formed on a circumferential face of the stem portion thereof, first screw structure portion is formed of a plurality of turns of continuous thread ridge that can be screwed into case thread ridge portion, second screw structure portion is formed of one or more turns of thread ridge at the same screw pitch as first screw structure portion and screwed into case thread ridge portion before first screw structure portion is screwed when leg is inserted into the hole.

Abstract: Provided is a method for controlling a cooling device that includes pump (1) having pump characteristics defined by a relationship between the number of revolutions and a pressure value, and cooling fan (5), and the cooling device cools an object to be cooled by a cool wind generated by injecting air compressed by pump (1) and a cooling wind of cooling fan (5). The method includes: preparing beforehand a first parameter to associate an altitude with a change rate d of a gradient of the pump characteristics at one altitude with respect to a gradient of the pump characteristics at another altitude; and controlling the numbers of revolutions of pump (1) and cooling fan (5) based on an altitude calculated from the first parameter and the change rate d.

Abstract: The present invention is applied to a projector that comprises a plurality of projection devices which generate images by modulating laser beams in the colors of R, G, B with optical modulators and which project the images onto projection surfaces through projection lenses, wherein the images projected respectively from said projection devices onto said projection surfaces are tiled into a single image as a whole. In the projector of the present invention, the number of G-color laser beam sources is smaller than the number of images projected respectively from said projection devices onto said projection surfaces; and said projection devices share said G-color laser beam sources and apply G-color laser beams emitted from said G-color laser beam sources to said optical modulators thereof.

Abstract: A brightness adjusting device of the present invention includes: a brightness setting section that accepts input of brightness change information that is an instruction to change a brightness setting value; a brightness adjusting section that performs brightness adjustment by either one of a first brightness adjusting unit and a second brightness adjusting unit having different characteristics from each other, in accordance with the instruction that is input from the brightness setting section; a determining section that determines whether or not the brightness adjustment of the brightness adjusting section switches from the first brightness adjusting unit to the second brightness adjusting unit; and an output section that outputs an alarm when the brightness adjustment of the brightness adjusting section is determined to switch from the first brightness adjusting unit to the second brightness adjusting unit based on a determination result of the determining section.

Abstract: A projection image display apparatus that enlarges and displays an image includes a case, a laser light source, a cooling mechanism that includes a component that produces vibration during an operation, a diffuser that diffuses light emitted from the laser light source, optics that shape the light that is diffused by the diffuser to light having a uniform luminance distribution and a rectangular cross-section, and an optical modulation element that modulates the light shaped by the optics.

Abstract: A projection type display device includes a lamp, polarization means (21) for converting light emitted from the lamp to polarized light, a liquid crystal panel for modulating the polarized light to form an image light, a projection lens (7) for projecting the image light, fans (11R, 12G, 23B) for taking outside air in and for supplying the outside air to the polarization means and the liquid crystal panel, a filter for collecting dust contained in the outside air, a first detection means for detecting temperature T1 of the outside air, a first control means for controlling the number of revolutions of the fan in response to temperature T1, a second detection means for detecting temperature T2 of the polarization means, a storage means for storing reference temperature T3, and a second control means. The second control means issues a warning or stops the projection type display device when temperature T2 is higher than reference temperature T3.

Abstract: A lighting apparatus of the present invention includes light source (101), rod integrator (105), reflecting mirror (103), diffusion plate (104) disposed adjacently to reflection mirror (103), reflective polarizing plate (107), and wavelength plate (106). The lighting apparatus further includes curved mirror (102) disposed among light source (101), reflecting mirror (103), and diffusion plate (104). Reflecting mirror (103) and curved mirror (102) include apertures (102a and 103a) formed to allow at least light from light source (101) to pass. Curved mirror (102) reflects light leaked from the entrance plane side of rod integrator (105) toward aperture (103a) of reflecting mirror (103).

Abstract: A display device includes a reference storage unit which stores a reference value of color gamut resulting from a reference color sensor measuring primary colors displayed on the screen; a difference calculation part which calculates a difference between the reference value of color gamut stored in the reference value storage unit and the measured value of color gamut resulting from a correcting color sensor measuring primary colors displayed on the screen; and an output part which outputs an alert to notify an abnormality of the correcting color sensor when the difference between the measured value of color gamut and the reference value of color gamut becomes equal to or greater than a predetermined threshold.

Abstract: A lens attaching/detaching device includes a lever holding plate that has an elastic piece which presses a lock releasing lever in a direction away from a locking mechanism and holds the lock releasing lever while the lock releasing lever is guided by a lower case. The lock releasing lever includes a first sliding part and a second sliding part which are guided by the lower case. The first sliding part and the second sliding part are arranged at different positions in a Z direction and an X direction orthogonal to a Y direction. An operation part is disposed at the same position as that of the first sliding part in the Z direction. An actuation part is disposed at the same position as that of the second sliding part in the Z direction. The lower case includes a first guiding part which guides the first sliding part and the second guiding part which guides the second sliding part.

Abstract: A bag-like flexible package is provided which is made of a flexible sheet capable of preventing unintended breakage, has good packing operation workability and a good stability of holding shock-absorbing materials, and exhibits a good workability for operations of suspended ceiling installation and wall mounting installation. The flexible package is made of flexible sheet and has a bag-like configuration having opening at one end thereof whereby it can receive goods therein that are inserted through opening. The flexible package has outwardly convex ridges, outwardly concave valleys, and notches formed on opening. Ridges and valleys are alternately arranged on flexible sheet , and extend in a direction that is orthogonal to or that is oblique to opening .

Abstract: To control a laser used as a light source according to an input image, while satisfying a safety standard, a projector includes lasers provided for each of a plurality of colors, a dichroic mirror that synthesizes laser beams emitted by the lasers, an LCOS panel that modulates synthesized light by the dichroic mirror, and a projection lens that projects the light modulated by the LCOS panel. A processor determines rate of power of the laser beams according to the image signal, determines, according to the rate of the power, an upper limit value of the power of the projected laser beam in each color to the extent that the upper limit value satisfies a safety standard, and adjusts the laser beam in each color emitted by the corresponding laser so as to prevent the projected light beam in each color from exceeding the upper limit value.

Abstract: There is provided a projector that uses a laser light source and is safe and realizes high brightness. The projector applies a laser beam emitted from a laser light source (101) to an image modulation device (105) and magnifies and projects an image formed in the image modulation device (105) by a zoom lens (106). The projector includes a control mechanism (108) for controlling the amount of energy of the light beam in response to a change in a focal distance of the zoom lens (106) in such a way that an energy density of the laser beam developed on a light emitting surface of the zoom lens (106) is kept at a specified value or smaller than the specified value. The specified value is the energy density of the laser beam in a case where the focal distance of the zoom lens (106) is set to the shortest value and is an accessible emission limit value (AEL value) that satisfies the laser safety class of the projector.