A support member (311) for supporting liquid crystal panels (441R, 441G, 441B) is disposed parallel to a cooling air flow channel formed between a light-incident end of a cross dichroic prism (45) and the respective liquid crystal panels and is constructed by a pair of components for supporting a neighborhood of the ends of the respective liquid crystal panels, so that the gap between the light-incident end of the cross dichroic prism and the respective liquid crystal panels facing the cooling a...

The invention provides a light source device of an easy maintenance, and a projector using the light source device. The light source device includes a light source lamp, a reflector, a lamp housing for covering substantially entirely almost the outer surface except for an opening plane of the reflector and a front glass for covering the opening plane of the reflector. The light source device is formed so as to be integrally exchangeable as a unit in the projector. Since the lamp housing covers a...

A projector is provided that includes a cooling structure which efficiently cools an electrooptic device, and which can cope with an increase in brightness of a light source and a reduction in size of the projector. A cooling fan for introducing cooling air is mounted above an air inlet, and a regulating fan for regulating the cooling air introduced by the cooling fan is mounted at a position opposing the cooling fan across an electrooptic device. For this reason, the cooling air is formed in a ...

A projector which results in good contrast and high luminance by fine-adjusting a polarizer. The projector includes a polarizer angle adjustment mechanism in which a first frame arranged in the vicinity of an electrooptic device pivotally supports a second frame having a polarizer thereon. The second frame is pivoted by an adjustment member so that it can turn properly. By properly using the adjustment member, the polarization axes of the polarizer can be optimumly set, and a high-contrast and h...

The invention provides a projector which results in good contrast and high luminance by fine-adjusting a polarizer. The projector includes a polarizer angle adjustment mechanism in which a first frame arranged in the vicinity of an electrooptic device pivotally supports a second frame having a polarizer thereon. The second frame is pivoted by an adjustment member so that it can turn properly. By properly using the adjustment member, the polarization axes of the polarizer can be optimumly set, an...

The invention provides a light source device of an easy maintenance, and a projector using the light source device. The light source device includes a light source lamp, a reflector, a lamp housing for covering substantially entirely almost the outer surface except for an opening plane of the reflector and a front glass for covering the opening plane of the reflector. The light source device is formed so as to be integrally exchangeable as a unit in the projector. Since the lamp housing covers a...

A plurality of RAM blocks constituting a first RAM section and a second RAM section, respectively are arranged alternately in such a way that the inversion bit lines and the non-inversion bit lines of these RAM blocks are changed alternately block by block and further the two adjacent bit lines of the two adjacent RAM blocks are connected in common as a data line of the SAM blocks. By controlling data transfer control gates for switching on-off conditions of four bit lines of the two adjacent RA...

An address decoder comprising a match signal generating circuit responsive to an inputted address signal and an address mask signal to mask any given bits of the inputted address signal, and an address selection signal generating circuit responsive to signals outputted from the match signal generating circuit, for generating a selection signal of a plurality of addresses which have corresponding bit values except for the masked bits. The address decoder can be used as a row address decoder or co...

A semiconductor memory device having: a memory cell array with random accessible memory cells disposed in a matrix form, the memory cell array including first memory cell arrays and second memory cell arrays alternately disposed in a column direction, and the first and second memory cell arrays being divided in accordance with a column address; a data register unit for storing one row data of the memory cell array, the data register unit being serially accessed by an external circuit, the data r...

A pickup device comprises a base in which an active circuit is assembled, and a transducer detachably mounted on the base and having a cantilever stylus arm extending therefrom. The transducer has a sealed portion, and a variable capacitor portion disposed within the sealed portion. The variable capacitor is comprised of a stationary electrode having an electret plate, and a movable electrode integrally provided at the rear end of the cantilever stylus arm in a manner to face to the stationary e...