Abstract: A light source module includes a first light source, a second light source, a third light source, and a first heat sink. The first heat sink includes a first base and a number of first fins. A bottom surface of the first base is attached to the first light source and the second light source. The first fins perpendicularly extend from a top surface of the first base away from the first light source and the second light source. Each first fin includes a first fin portion adjacent to the first light source and a second fin portion adjacent to the second light source, and defines a first slot for increasing the thermal resistance between the first fin portion and the second fin portion.

Abstract: The invention discloses a projector including a light-source device, a guiding passage, and a fan. The light-source device includes a light-source lamp for emitting light. The guiding passage has an outlet and an inlet. There is a block disposed in the vicinity of the outlet. The outlet of the guiding passage is connected to the light-source device, and the inlet of the guiding passage is connected to the fan. The fan blows an air flow into the guiding passage. When the air flow passes through the block disposed in the vicinity of the outlet, the air flow will be divided into a first air flow and a second air flow. Afterward, the first air flow cools a first portion of the light-source device, and the second air flow cools a second portion of the light-source device. Accordingly, temperature of the light-source lamp can be stably maintained.

Abstract: A light-source module includes a red light source, a blue light source, a green light source, a first heat sink, and a second heat sink. The first heat sink is attached to the green light source for dissipating heat generated from the green light source. The second heat sink is attached to the red light source and the blue light source for dissipating heat generated from the red light source and the blue light source. The first heat sink is separated from the second heat sink.

Abstract: A projector includes a first exhaust fan, a second exhaust fan, a casing, an optical engine, a circuitry system, and a projection lens module. The casing includes a front wall, a rear wall opposite to the front wall, a first sidewall, and a second sidewall opposite to the first sidewall. The first sidewall defines a first air inlet adjacent to the front wall and a second air inlet adjacent to the rear wall. The second sidewall defines a first and second air outlet aligned with the first and second air inlet respectively. The first and second exhaust fans are arranged corresponding to the first and second air outlet respectively. The projection lens module and the circuitry system are positioned in the casing between the first air inlet and the first air outlet. The optical engine is positioned in the casing between the second air inlet and the second air outlet.

Abstract: A lens module includes a seat, a lens holder and a thermal dissipation structure. The seat includes a base plate and two sidewalls perpendicularly formed on a surface of the base plate. The lens holder is mounted on the seat between the two sidewalls. The thermal dissipation structure is mounted on the seat and thermally conducts with the lens holder for cooling the lens holder.

Abstract: A method for controlling fan speed is disclosed. Firstly, a number of temperature ranges are defined. Each temperature range is associated with a corresponding fan speed. Each two adjacent temperature ranges overlap. The temperature of an electronic system is measured and is compared with the defined temperature ranges to determine whether it enters into a new range. If the measured temperature exceeds any one of the limits of a temperature range associated with the current fan speed, it enters into a new temperature range. The fan speed is adjusted to which is associated with the new entered temperature range. The overlap of each two adjacent temperature ranges covers the fluctuation of the temperature of the electronic system caused solely by the adjustment of fan speed caused by the traversing of the measured temperature between the two adjacent temperature ranges.

Abstract: An electronic device includes a heat dissipation system and an operating system. The heat dissipation system includes a housing, a first heat dissipation module received in the housing, heat pipes extending from the first heat dissipation module through the housing. The operating system includes a dust-proof housing, a heat source and a heat dissipation device. The heat source is received in the dust-proof housing and generates heat. The cooling module is adhered to an outer surface of the dust-proof housing to be cooled and attaches the heat pipes to the first heat dissipation module. The outer surface of the dust-proof housing is adjacent to the housing. The heat pipes transfer heat from the operating system into the first heat dissipation module.

Abstract: A projector includes a casing, an optical engine, and a heat dissipating module. The casing includes a first sidewall, a front wall defining a hole, a second sidewall, and a rear wall connected in sequence. The optical engine includes a lens module substantially aligned with the hole defined by the front wall, a DMD, and an illuminator module. The illuminator module is arranged at a side of the lens module away from the second sidewall, and includes a housing having a side surface away from the lens module and at least one light source installed on the side surface. The heat dissipating module includes a first heat sink attached to the at least one light source, a blower, and an exhaust fan. The blower is for blowing air towards the first heat sink from an air inlet.

Abstract: A heat-dissipating structure of a housing is disclosed. The housing defines an opening that is embedded with the heat-dissipating structure. The heat-dissipating structure includes a number of metal slats, a number of connection members, and a supporting frame. The metal slats are spaced and angled to form air channels and fixed to each other via the connection members. The combination of the metal slats and connection members are supported by the supporting frame.

Abstract: A projector includes a housing, a projection lens, a receiving member, an optical engine, a light source module, a heat sink, and a fan. The housing includes a bottom wall and four sidewalls, the bottom wall and the four sidewalls together define a receiving space. One of the sidewalls a number of first vents, the other three sidewalls define a number of second vents. The projection lens is located at an intersecting corner of the sidewalls. The receiving member includes a first receiving portion and a second receiving portion. The optical engine is received in the second receiving portion. The light source module is received in the first receiving portion. The heat sink is located at an intersecting corner of the sidewalls. The fan is located at an intersecting corner of the sidewalls.

Abstract: A projector includes a light source, a color wheel, and a Digital Mirror Device. The color wheel is configured for providing rapid color changes in light emitted from the light source. The Digital Mirror Device is configured for forming an optical image according to image information by using light emitted from the light source. The projector includes a first airflow channel and a second airflow channel. The first airflow channel is configured for cooling the light source and the color wheel. The second airflow channel is configured for cooling the Digital Mirror Device. The first airflow channel and the second airflow channel are independent to each other. A method for cooling a projector using zone cooling is also provided.

Abstract: A lamp housing for a projector is for accommodating at least a lamp, and a heat-dissipating fan disposed at one side of the lamp housing. The lamp housing includes a housing body, and a baffle plate. In this case, the housing body has a first opening, and the wind blown by the heat-dissipating fan flows from the first opening into the housing body. The baffle plate is disposed between the housing body and the lamp. The baffle plate and the direction of the wind blown by the heat-dissipating fan form an included angle.

Abstract: An electronic apparatus includes a casing and an adjustable foot unit, which is disposed on the casing. The adjustable foot unit includes multiple protrusions of different lengths. When the electronic apparatus is disposed on a supporting surface, one of the multiple protrusions is selected to contact the supporting surface so that a space between the casing and the supporting surface is determined by the length of the selected protrusion.

Abstract: The invention discloses a projector including an optical system, a guiding passage, and two fans. The optical system includes three panels. The guiding passage has three outlets and two inlets. Each outlet of the guiding passage is located opposite to each panel. Each inlet of the guiding passage is located opposite to each fan. Each of the fans directs an air flow into the guiding passage. Thereby, the air flow effectively cools each panel of the optical system.

Abstract: The invention discloses a projector including a light-source device, a guiding passage, and a fan. The light-source device includes a light-source lamp for emitting light. The guiding passage has an outlet and an inlet. There is a block disposed in the vicinity of the outlet. The outlet of the guiding passage is connected to the light-source device, and the inlet of the guiding passage is connected to the fan. The fan blows an air flow into the guiding passage. When the air flow passes through the block disposed in the vicinity of the outlet, the air flow will be divided into a first air flow and a second air flow. Afterward, the first air flow cools a first portion of the light-source device, and the second air flow cools a second portion of the light-source device. Accordingly, temperature of the light-source lamp can be stably maintained.

Abstract: An optical inspection device is provided herein to achieve the accuracy and convenience of inspecting optical glasses and planar optical objects. The optical inspection device mainly has the optical inspection lenses installed on the arms of a U-shape member that surrounds the object to be examined. Then, by moving the U-shaped member along orthogonal directions, the entire surface of the object could be examined accurately.

Abstract: A novel cleaning device for removing the particles and residual chemicals from the surfaces of optical objects is provided herein. The cleaning device mainly integrates a driving mechanism for spinning the object to be cleaned, and an advancing mechanism to lift the object in and out of the cleaning device. The driving mechanism has adjustment means for adjusting the level of the object so that the object could be rotated at very high speed but with superior stability. The advancing mechanism reduces manual intervention in the cleaning process and thereby reduces the possibility of contamination to the object after it is cleaned.

Abstract: A color wheel includes a motor, a color filter, and a fan blade assembly. In this case, the motor has a housing and a motor body, and the housing is set to a side of the motor body. The housing and the motor body rotate around a central axis. The color filter is set on the housing. The fan blade assembly has a plurality of blades and the fan blade assembly is set on the color filter.

Abstract: A liquid transportation device includes a working board, a working liquid, a liquid channel and a cover board, wherein the liquid channel is formed on a top surface of the working board, the covering board is fully covered the liquid channel, the liquid channel composed of a material substantially tending to the liquid, and the covering board is composed of a material substantially phobic to the liquid. The working liquid flows within the liquid channel in guidance of the deviation of surface tension between the liquid channel to the working liquid, and the covering board to the working liquid, so that the working liquid is transported within the liquid channel without any external power.

Abstract: A color wheel includes a motor, a color filter, and a fan blade assembly. In this case, the motor has a housing and a motor body, and the housing is set to a side of the motor body. The housing and the motor body rotate around a central axis. The color filter is set on the housing. The fan blade assembly has a plurality of blades and the fan blade assembly is set on the color filter.