Delta Electronics, Inc.

Meng-Sheng Chang

Hui-Hsiung Wang

Keh-Su Chang

Ching-Chao Chen

Chien-Fu Tseng

Wei-Chien Ma

An optical fiber protection system includes an optical fiber, a light source, a protection circuit, a sensor, and a controller. The light source is configured to transmit a signal to the optical fiber. The protection circuit extends along a length direction of the optical fiber. The sensor is electrically connected to the protection circuit. The controller is electrically connected to the sensor and the light source.

Optical fiber protection system

A projector protection method includes: multiple temperature sensors detect temperatures of multiple areas in a projector to obtain multiple temperature parameters respectively; a processor lowers an output power of a laser source when any temperature parameter corresponding to one of areas falls into corresponding one of multiple first temperature intervals and multiple fans in the projector are set to a maximum speed; and the processor turns off the laser source when any temperature parameter corresponding to one of areas falls into corresponding one of multiple second temperature intervals. The second temperature interval and the first temperature interval corresponding to the same temperature parameter are different from each other.

Projector with temperature sensor and projector protection method

A rotatable-type liquid-cooled heat sink and a disposition method for the same are provided. The liquid-cooled heat sink is disposed in a three-dimensional space and includes a pump, a liquid storage tank, a liquid-cooled head, a cooling module, and a plurality of pipes. The pipes communicatively couple the pump, the liquid storage tank, the liquid-cooled head, and the cooling module. Any of the liquid storage tank, the liquid-cooled head, the cooling module, and the pipes exceeds the pump in any of an X axis, a Y axis, a Z axis of a three-dimensional space.

Rotatable-type liquid-cooled heat sink and disposition method for the same

A digital micro-mirror unit is arranged on a circuit board. A digital micro-mirror device mask surroundingly covers the digital micro-mirror unit. A thermo-insulation element is arranged between the digital micro-mirror unit and the digital micro-mirror device mask. The digital micro-mirror unit is thermally insulated against the digital micro-mirror device mask through the thermos-insulation element. A thermoelectric cooler (TEC) is thermally connected to the digital micro-mirror unit. A thermo-conductive body is attached on the hot side of the TEC. Therefore the digital micro-mirror unit can meet temperature requirements of safety standards and avoid reducing its service life.

Digital micro-mirror device with a heat dissipation structure

A color wheel rotation speed detecting module is disclosed and includes a color wheel, a motor, a rotation speed detector and a processor. The color wheel includes a first segment and at least one second segment. The motor drives the color wheel to rotate. The rotation speed detector includes an emitter and a receiver. The emitter outputs a light signal to the first segment or the second segment of the color wheel when the color wheel is rotated. When the receiver receives the light signal reflected from the second segment, the receiver outputs a detecting signal correspondingly. When the light signal passes through the first segment and the receiver fails to receive the light signal, the receiver interrupts the output of the detecting signal. The processor receives the detecting signal from the receiver, and obtains the rotating speed of the color wheel according to the detecting signal varied with time.

Color wheel rotation speed detecting module

A fan control method for a projection apparatus is provided. The method includes the following steps. When the lamp is switched from a working state to a power-off state, the fan device is enabled. When a temperature of the lamp is reduced to a first predetermined temperature, the fan device is disabled. When the temperature of the lamp is reduced to be lower than a second predetermined temperature, the fan device is enabled again. When the temperature of the lamp is reduced to a re-ignition temperature, the fan device is disabled.

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Taoyuan, Taiwan

Meng-Sheng Chang