Abstract: The disclosed electrostatic coating system (1) includes a spray gun (2) for electrostatic coating, a high-voltage generator (5), and an alternating-current source unit (4), and further includes a removable grounding member (7), in a state attached to the main body of the gun, provided to close an open-circuit portion (3c) of the grounded power source line (3a), and a control circuit (8) for controlling the alternating current source unit (4) by detecting the current flowing through the power source line (3) or the voltage of the power source line (3) by a current coil (13) to stop application of the alternating voltage (Vac) to the high-voltage generator (5) when the detected electric current or the detected voltage has dropped or either the current or the voltage is not detected during supply of the alternating voltage (Vac) to the high voltage generator (5) of the spray gun (2). This system enables prevention of charging of the removable grounding member (7) to improve the safety in the coating operation.

Abstract: The disclosed electrostatic coating system (1) includes a spray gun (2) for electrostatic coating, a high-voltage generator (5), and an alternating-current source unit (4), and further includes a removable grounding member (7), in a state attached to the main body of the gun, provided to close an open-circuit portion (3c) of the grounded power source line (3a), and a control circuit (8) for controlling the alternating current source unit (4) by detecting the current flowing through the power source line (3) or the voltage of the power source line (3) by a current coil (13) to stop application of the alternating voltage (Vac) to the high-voltage generator (5) when the detected electric current or the detected voltage has dropped or either the current or the voltage is not detected during supply of the alternating voltage (Vac) to the high voltage generator (5) of the spray gun (2). This system enables prevention of charging of the removable grounding member (7) to improve the safety in the coating operation.

Abstract: A spray gun suitable for electrostatic coating, using a coating material whose electric resistance is relatively low. A coating material nozzle is attached to the front middle region of a barrel having a forwardly projecting cylindrical section on the front outer peripheral edge, and an air cap which covers their front surfaces is installed. A pattern air flow channel is formed between the air cap, coating material nozzle outer peripheral surface and the cylindrical section inner peripheral surface, and an annular electrode is attached to the inside of the flow channel. The air cap is centrally provided with an atomization air spout hole, and a coating material delivery port at the front end of the coating material nozzle is inserted therein. A pin electrode is projected forward through the coating material delivery port. Two pairs of projections project forward from two sets of opposed locations for the air cap, each with a pattern air spout hole.

Abstract: An optical device body (440) includes: three optical modulator holders (446) respectively holding three liquid crystal panels (441) and having cooling chambers with cooling fluid sealed therein to respectively cool the three liquid crystal panels (441) with the cooling fluid in the respective cooling chambers; a plurality of fluid circulators (448) intercommunicated with the three optical modulator holders (446) to guide the cooling fluid to the outside of the respective cooling chambers and re-introduce the cooling fluid into the respective cooling chambers; and a flow volume changer (449) disposed in a flow path of the cooling fluid and capable of changing flow volumes of the cooling fluid flown into the respective optical modulator holders (446) in accordance with heat values of the three liquid crystal panels (441).

Abstract: An optical device (44) includes an optical modulator holder (4402) having a cooling chamber, in which cooling fluid is sealed therein, for holding the optical modulator in the thermally conductive state for the cooling fluid in the cooling chamber, a plurality of fluid circulating members (448) communicated to the cooling chamber of the optical modulator holder for guiding said cooling fluid to the outside of said cooling chamber and again guiding the cooling fluid to the inside of the cooling chamber, and a cooling fluid accumulating section provided in flow path of the cooling fluid of the plurality of fluid circulating members for accumulating therein the cooling fluid; in which the cooling fluid accumulating section includes a main tank 445 and a fluid branching section 4401 provided in the upstream of the cooling fluid against the optical modulator holder and a downstream-side cooling fluid accumulating section provided in the downstream of the cooling fluid against the optical modulator holder.

Abstract: An optical modulator holder 4402 has a middle frame 4409 for supporting a liquid crystal panel 441, a pair of frame members 4405 and 4406 for sandwiching the middle frame 4409 supporting the liquid crystal panel 441, a second elastic member 4407B and a third elastic member 4407C respectively interposed between the pair of frame members 4405 and 4406 and the liquid crystal panel 441, and translucent boards 442A and 443A respectively arranged on outer faces of the pair of frame members 4405 and 4406. An opening 4409A into which the liquid crystal panel 441 can be fitted is formed on the middle frame 4409, and an inner face thereof serves as an exterior position reference face for the liquid crystal panel 441.

Abstract: A liquid crystal panel (441) as an optical modulator includes: a driving board (441C) having a plurality of signal lines, a plurality of switching elements connected to the signal lines and a plurality of picture electrodes connected to the switching elements; an opposing board (441D) being opposed to the driving board (441C) and having common electrodes; and a flexible printed board (441E) electrically connected with the plurality of signal lines and the common electrodes, the flexible printed board extended from between the driving board (441C) and the opposing board (441D). The flexible printed board (441E) is provided with an insertion hole (441E1) for a fluid circulator in which a cooling fluid is circulated to be inserted.

Abstract: An optical device (44) includes: a optical modulator holder (4402) that has inside thereof a cooling chamber in which a cooling fluid is encapsulated, and holds a optical modulator in such a manner that heat can be transferred between the optical modulator holder and the cooling fluid within the cooling chamber; a plurality of fluid circulation members (448) that are connected to the cooling chamber of the optical modulator holder (4402) for mutual communication to guide the cooling fluid outside the cooling chamber and guide the cooling fluid inside the cooling chamber, again; and a main tank (445) that is arranged in the flow path of the cooling fluid in the plurality of fluid circulation members (448) and accumulates the cooling fluid. The main tank (445) has a cooling fluid inlet section for allowing the main tank (445) to be replenished with the cooling fluid.

Abstract: The invention relates to a spray gun suitable for electrostatic coating, using a coating material whose electric resistance is relatively low. A coating material nozzle (24) is attached to the front middle region of a barrel (2) having a forwardly projecting cylindrical section (36) on the front outer peripheral edge, and an air cap (40) which covers their front surfaces is installed. A pattern air flow channel (45) is formed between the air cap, coating material nozzle outer peripheral surface and the cylindrical section inner peripheral surface, and an annular electrode (13) is attached to the inside of the flow channel. The air cap is centrally provided with an atomization air spout hole (32), and a coating material delivery port (30) at the front end of the coating material nozzle is inserted therein. A pin electrode (31) is projected forward through the coating material delivery port.

Abstract: An optical modulator holder (4402) has an optical modulator holding unit (4405) having a substantially rectangular U-shaped cross-section and made of heat-conductive material, a plate-like member (4406) made of heat-conductive material, and an optical modulator cooling unit (4407) constituted by a hollow member which is capable of enclosing cooling fluid inside and is made of heat-conductive material. Of the optical modulator holding unit (4405) and the plate-like member (4406), peripheries of openings (4405A1, 4406A) each contact heat-transferably a liquid crystal panel (441). The liquid crystal panel (441) is held inside the rectangular U-shape of the optical modulator holding unit (4405). The optical modulator cooling unit (4407) is formed like a ring whose inner side surface heat-transferably contacts the liquid crystal panel (441), and has an inlet port (4407D) and outlet port (4407E).

Abstract: Cooling chambers (R1, R2) for accommodating therein a cooling fluid for cooling a liquid crystal panel (441) are formed inside a pair of frame members (4405, 4406) constituting an optical modulator holder (4402). There are provided, in the pair of frame members (4405, 4406), inlet ports (4405D, 4406D) for inletting a cooling fluid into the cooling chambers (R1, R2), outlet ports (4405E, 4406E) for discharging the cooling fluid inside the cooling chambers (R1, R2) to the outside, and a buffer section (Bf1) for temporally accumulating the cooling fluid flowing therein via the inlet ports (4405D, 4406D) and rectifying a flow direction of the cooling fluid to a direction parallel to an optical modulation face and/or to a direction perpendicular to the optical modulation face.

Abstract: A projector comprises an electro-optic modulator that modulates an illumination light beam in accordance with image information; a projecting optical system that projects the illumination light beam modulated by the electro-optic modulator, an illuminating device that emits the illumination light beam having a sectional shape compressed in the other direction so as to illuminate an entire image forming area with respect to one direction in the image forming area of the electro-optic modulator and illuminate one portion of the image forming area with respect to the other direction; and a rotating prism rotated at a constant speed and scanning the illumination light beam from the illuminating device along the other direction in the image forming area of the electro-optic modulator.

Abstract: An optical device (44) includes three optical modulators, three optical modulator holders (447), a plurality of fluid circulating members (440), a cross dichroic prism (444), a fluid branching section (446), a fluid feed-in section (449) and a fluid pressurizing/feeding section (445). The three optical modulator holders (447) are fitted respectively to the three light-incident surfaces of the cross dichroic prism (444) through three supporting members (448). The fluid feed-in section (449) is fitted to the top surface of the cross dichroic prism (444). The fluid branching section (446) and the fluid pressurizing/feeding section (445) are laid one on the other and fitted to the lower surface of the cross dichroic prism (444).

Abstract: An optical device (44) includes fluid circulating member link sections (446) that can link a plurality of fluid circulating members (448). The fluid circulating member link sections (446) are arranged respectively between a main tank (445) and an optical device main body (440) and between a radiator (447) and the optical device main body (440) to allow the optical device main body (440) to be fitted to and removed from the main tank (445) and the radiator (447).

Abstract: A first movement detection sensor comprises a void formed by a partition wall made of a non-magnetic material, a magnetized rolling member which is sealed inside the void, and a magnetic sensor provided in the partition wall. A second movement detection sensor is configured by positioning the rolling member in the substantial center of the void and then filling the void with a visco-elastic body until the visco-elastic body abuts against the rolling member. A movement detection device is constructed by annexing an amplifying circuit, a transmitting circuit, a differentiating circuit, and so on to the first movement detection sensor and second movement detection sensor.

Abstract: To provide a micro-lens substrate wherein a higher contrast ratio can be obtained when used in a liquid crystal panel and the like. A micro-lens substrate 1A includes a first substrate 2 with concaves for microlenses having a plurality of first concaves 31 and first aligment marks 71 formed on a first glass substrate 29, a second substrate 8 with concaves for microlenses having a plurality of second concaves 32 and second aligment marks 72 formed on a second glass substrate 89, a resin layer 9, microlenses 4 consisting of doulbe convex lenses formed of a resin filled in between the first and second concaves 31 and 32, and spacers 5.

Abstract: To provide a micro-lens substrate wherein a higher contrast ratio can be obtained when used in a liquid crystal panel and the like. A micro-lens substrate 1A includes a first substrate 2 with concaves for microlenses having a plurality of first concaves 31 and first aligment marks 71 formed on a first glass substrate 29, a second substrate 8 with concaves for microlenses having a plurality of second concaves 32 and second aligment marks 72 formed on a second glass substrate 89, a resin layer 9, microlenses 4 consisting of doulbe convex lenses formed of a resin filled in between the first and second concaves 31 and 32, and spacers 5.

Abstract: To provide a micro-lens substrate wherein a higher contrast ratio can be obtained when used in a liquid crystal panel and the like. A micro-lens substrate 1A includes a first substrate 2 with concaves for microlenses having a plurality of first concaves 31 and first aligment marks 71 formed on a first glass substrate 29, a second substrate 8 with concaves for microlenses having a plurality of second concaves 32 and second aligment marks 72 formed on a second glass substrate 89, a resin layer 9, microlenses 4 consisting of double convex lenses formed of a resin filled in between the first and second concaves 31 and 32, and spacers 5.

Abstract: An optical modulator holder (4402) has an optical modulator holding unit (4405) having a substantially rectangular U-shaped cross-section and made of heat-conductive material, a plate-like member (4406) made of heat-conductive material, and an optical modulator cooling unit (4407) constituted by a hollow member which is capable of enclosing cooling fluid inside and is made of heat-conductive material. Of the optical modulator holding unit (4405) and the plate-like member (4406), peripheries of openings (4405A1, 4406A) each contact heat-transferably a liquid crystal panel (441). The liquid crystal panel (441) is held inside the rectangular U-shape of the optical modulator holding unit (4405). The optical modulator cooling unit (4407) is formed like a ring whose inner side surface heat-transferably contacts the liquid crystal panel (441), and has an inlet port (4407D) and outlet port (4407E).

Abstract: An optical device (44) includes three optical modulators, three optical modulator holders (447), a plurality of fluid circulating members (440), a cross dichroic prism (444), a fluid branching section (446), a fluid feed-in section (449) and a fluid pressurizing/feeding section (445). The three optical modulator holders (447) are fitted respectively to the three light-incident surfaces of the cross dichroic prism (444) through three supporting members (448). The fluid feed-in section (449) is fitted to the top surface of the cross dichroic prism (444). The fluid branching section (446) and the fluid pressurizing/feeding section (445) are laid one on the other and fitted to the lower surface of the cross dichroic prism (444).