Delta Electronics, Inc.

Hui-Hsiung Wang

Meng-Sheng Chang

Yu-Hsuan Sha

Keh-Su Chang

Ching-Chao Chen

Chi-Ming Yang

Wei-Chien Ma

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

An optical module is provided. The optical module includes a substrate, an optical element, a cover plate, and a heat-dissipating device. The optical element is disposed on the substrate, wherein the optical element has a first side and a second side opposite the first side. The cover plate is disposed on the second side of the optical element, and extends over the substrate. In addition, the substrate is disposed between the heat-dissipating device and the optical element.

Optical module

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

An optical excitation device for exciting a laser light source includes a wavelength converter and a moving element. The laser light source emits a first light beam. The wavelength converter includes a wheel, a motor connected to the wheel, and a wavelength converting layer disposed on a light receiving surface of the wheel for converting the first light beam with the first wavelength into a second light beam with a second wavelength. The moving element is connected to the wavelength converter for moving the wavelength converter relative to the laser light source. There is a first reaction area between the laser light source and the wavelength converter when only the motor is operated, there is a second reaction area between the laser light source and the wavelength converter when both the motor and the moving element are operated, and the second reaction area is greater than the first reaction area.

Optical excitation device, light source module, and projector using the same

A phosphor wheel heat-dissipating module for a laser projection system is provided. The phosphor wheel heat-dissipating module includes a phosphor wheel, a plurality of air vents and an impeller. At least one phosphor agent is coated on an outer-ring portion of a first surface of the phosphor wheel. The air vents run through the phosphor wheel. The impeller is disposed on a second surface of the phosphor wheel, and includes an inlet and a first outlet. A laser beam is projected on the outer-ring portion of the phosphor wheel. When the phosphor wheel is rotated at a high rotating speed, an airflow is inhaled into the impeller through the inlet. A first portion of the airflow is blown out through the first outlet, and a second portion of the airflow is transferred to the first surface of the phosphor wheel through the air vents.

Growing community of inventors

Taoyuan, Taiwan

Hui-Hsiung Wang