Abstract: A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis, from 47.5 to 58 wt % of SiO2, from 10 to 30 wt % of Al2O3, from 10 to 30 wt % of MgO, and from 0.1 to 2.8 wt % of ZrO2.

Abstract: A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis, from 50.5 to 56 wt % of SiO2, from 10 to 30 wt % of Al2O3, from 10 to 30 wt % of MgO, and from 4.2 to 10.6 wt % of TiO2.

Abstract: A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis, from 47.5 to 52.5 wt % of SiO2, from 10 to 30 wt % of Al2O3, from 10 to 30 wt % of MgO, and from 6.2 to 7.8 wt % of TiO2.

Abstract: A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis, from 54 to 60 wt % of SiO2, from 10 to 30 wt % of Al2O3, from 10 to 30 wt % of MgO, and from 0.1 to 2.7 wt % of Li2O.

Abstract: A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis, from 52 to 56 wt % of SiO2, from 10 to 30 wt % of Al2O3, from 10 to 30 wt % of MgO, and from 7 to 12 wt % of TiO2.

Abstract: A projector includes a duct having a connecting end for connection to an air inlet provided in a housing, and an air intake end for drawing in outside air for cooling the interior of the projector. The duct is made of a soft or flexible material and is capable of altering its shape. Thus, the duct can change the position of the air intake end in space, for example, to different positions. Further, the duct is pivotable on a pivot axis, and thus can change the opening direction of the air intake end circumferentially about the pivot axis. Therefore, selection of the position and/or opening direction of the air intake end so as to draw in the outside air suitable for cooling the interior depending on the usage forms of the projector achieves efficient cooling of the interior of the projector.

Abstract: In a moving picture decoding display apparatus and moving picture decoding display method according to the present invention, moving picture decoder 101 decodes a moving picture signal, RGB matrix manipulation section 103 converts the decoded video signal in YCbCr format into a video signal in RGB format, contrast/brightness adjusting section 104 adjusts the contrast and brightness of the video signal in RGB format, and liquid crystal display module section 110 displays the adjusted video signal on liquid crystal panel 109. At this point, operation control section 105 switches on and off the operation of RGB matrix manipulation section 103 and contrast/brightness adjusting section 104 corresponding to the actual frame rate in moving picture decoder 101, and only when the operation is “on”, the section 105 controls so that the video signal from contrast/brightness adjusting section 104 is stored in video RAM 107 in liquid crystal display module section 110.

Abstract: A screen image observing device and method provides the sensations of virtual reality to the observer and reduces, to the extent possible, the discrepancy that is perceived by the observer between the movement of the observer's head and the displayed screen image. The device has a head tracking means, which detects the movement of the observer's head, and a screen image generating means, which generates image data based upon the result of the detection performed by the head tracking means. Image data is supplied to a display means.

Abstract: An objective lens system for optical pickups performing at least one of reading and writing of information by condensing a luminous flux from a light source on an information recording medium, has the following two lens elements from a light source side: a first lens element having a first surface convex to the light source side and a second surface convex to the light source side; and a second lens element having a third surface convex to the light source side and a plane fourth surface, wherein the first surface is an aspherical surface.

Abstract: A glass ceramics composition for recording disk substrate consists essentially, expressed in terms of weight percent on the oxide basis, of from 65 to 80 wt % of SiO2, from 3 to 15 wt % of Al2O3, from 3 to 15 wt % of Li2O, from 0.2 to 5 wt % of P2O5, and from 2.5 to 12 wt % of ZrO2.

Abstract: A glass ceramics composition for recording disk substrate consists essentially, expressed in terms of weight percent on the oxide basis, of from 65 to 80 wt % of SiO2, from 3 to 15 wt % of Al2O3, from 3 to 15 wt % of Li2O, from 0.2 to 5 wt % of P2O5, and from 0.1 to 0.8 wt % of ZrO2.

Abstract: A droplet generating apparatus is provided to a projector, so as to cool an optical member utilizing taking away of heat when droplets are vaporized. The droplets generated by the droplet generating apparatus are allowed to adhere directly to the optical member or an air flow is generated to transfer the droplets, so that the droplets are allowed to adhere to the optical member. Moreover, the optical member is cooled by cooling air, and after the droplets are included in the cooling air, the droplets are removed, so that a temperature of the cooling air is previously lowered.

Abstract: An illumination system has a light source for emitting illumination light, a color wheel, a first deflecting member, and a second deflecting member. The color wheel transmits or reflects the illumination light while rotating about a rotation axis in such a way that illumination light exiting from the color wheel has colors that are switched sequentially with time. The first deflecting member deflects the illumination light in such a way that the illumination light enters the color wheel. The second deflecting member deflects the illumination light having exited from the color wheel. The illumination light entering the first deflecting member and the illumination light exiting from the second deflecting member are both substantially perpendicular to the rotation axis of the color wheel.

Abstract: A projector has a liquid crystal display panel for displaying an image, a lamp for illuminating the liquid crystal display panel, and a projection optical system for projecting light modulated by the image displayed. The lamp is held by a member whose position is variable to allow fitting of different types of lamp. The projector acquires data related to the lamp currently fitted and controls the light emission of the lamp on the basis of that data. The data includes the life of the lamp, so that the projector prevents the lamp to be lit longer than its remaining life. The remaining life is updated in accordance with how long the lamp has been lit. In addition to the lamp that is lit, an auxiliary lamp may be fitted so that the lamp that is lit can be switched to the auxiliary lamp as required. The lamp is formed into a single lamp unit together with a reflector or a casing to prevent the user from touching the lamp.

Abstract: A decoding section 111 decodes inputted coded data to image data and outputs it to an image data writing section 112 whenever necessary. The decoding section 111 outputs a decode completion notice signal to an image data reading section 114 and control signal generating section 115 every time when outputting a predetermined amount of image data (for example, an amount corresponding to one frame). The image data writing section 112 writes image data to the storing section 113 whenever necessary. An image data reading section 114 operates intermittently with timing when the decode completion notice signal is input thereto, and reads a predetermined amount of image data from the storage section 113. The control signal generating section 115 generates a control signal 206 that instructs a new portion in image data decoded by decoding means.

Abstract: A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis, from 53.5 to 60 wt % of SiO2, from 10 to 30 wt % of Al2O3, from 10 to 30 wt % of MgO, and from 3.5 to 8.8 wt % of TiO2.

Abstract: A glass ceramics composition for recording disk substrate consists essentially, expressed in terms of weight percent on the oxide basis, of from 65 to 80 wt % of SiO2, from 3 to 15 wt % of Al2O3, from 3 to 15 wt % of Li2O, from 0.2 to 5 wt % of P2O5, and from 0.1 to 0.8 wt % of TiO2.

Abstract: A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis; from 50.5 to 52.5 wt % of SiO2, from 10 to 30 wt % of Al2O3, from 10 to 30 wt % of MgO, and from 4 to 10.6 wt % of TiO2.

Abstract: An electronic camera having a photoelectric sensor device is structured such that a rotational shaft of an imaging unit is horizontal to an object to be photographed. Further, the imaging unit contains a photography lens and a CCD (charge-coupled device) which are aligned horizontally to the object due to a structure that a reflection mirror deflects a light flux from the object, and then the light flux enters vertically into the photographing lens and the CCD. This composition allows a camera body to be downsized, and the photographing direction to be changed with fixing the camera body.

Abstract: A communication device having an image transmission function such as a video phone or a camera-equipped cellular phone. The image transmission function is capable of capturing an object image using an optimal size.