Abstract: An optical path adjusting mechanism including a rotating base, an optical element, a coil, a first spring and a second spring is provided. The rotating base includes a first corner and a second corner opposite to the first corner. A first area and a second area are disposed along a line passing through the first corner and the second corner on the rotating base. The optical element is disposed on the rotating base. The coil is disposed around a periphery of the rotating base. One terminal of the first spring is connected to the first area of the rotating base. One terminal of the second spring is connected to the second area of the rotating base.

Abstract: An optical path adjusting mechanism including a rotating base, an optical element, a coil, a first spring and a second spring is provided. The rotating base includes a first corner and a second corner opposite to the first corner. A first area and a second area are disposed along a line passing through the first corner and the second corner on the rotating base. The optical element is disposed on the rotating base. The coil is disposed around a periphery of the rotating base. One terminal of the first spring is connected to the first area of the rotating base. One terminal of the second spring is connected to the second area of the rotating base.

Abstract: An optical path adjusting mechanism including a rotating base, an optical element, a coil, a first spring and a second spring is provided. A first area and a second area are diagonally disposed on the rotating base. The optical element is disposed in the rotating base. The coil is disposed around a periphery of the rotating base. One terminal of the first spring is connected to the first area of the rotating base. One terminal of the second spring is connected to the second area of the rotating base.

Abstract: An optical path adjusting mechanism including a rotating base, an optical element, a coil, a first spring and a second spring is provided. A first area and a second area are diagonally disposed on the rotating base. The optical element is disposed in the rotating base. The coil is disposed around a periphery of the rotating base. One terminal of the first spring is connected to the first area of the rotating base. One terminal of the second spring is connected to the second area of the rotating base.

Abstract: A projector including a light source, a light valve, a projection lens and a displacement module is provided. The light source generates an illumination light. The light valve converts the illumination light into a multi-pixel area image light. The projection lens is disposed in a transmission path of the multi-pixel area image light. The image displacement module includes a carrier, an optical element, a frame and a base. The carrier, the frame and the base are substantially coplanar with each other, and the multi-pixel area image light provided is configured to be moved by the optical element and being moved along a third direction in response to the spinning of the carrier, and the first direction is different from the second direction. Furthermore, a three-dimensional printing apparatus is also provided.

Abstract: A projector including a light source, a light valve, a projection lens and a displacement module is provided. The light source generates an illumination light. The light valve converts the illumination light into a multi-pixel area image light. The projection lens is disposed in a transmission path of the multi-pixel area image light. The image displacement module includes a carrier, an optical element, a frame and a base. The carrier, the frame and the base are substantially coplanar with each other, and the multi-pixel area image light provided is configured to be moved by the optical element and being moved along a third direction in response to the spinning of the carrier, and the first direction is different from the second direction. Furthermore, a three-dimensional printing apparatus is also provided.

Abstract: An image displacement module is adapted for an optical apparatus to switch image positions of a plurality of plane image. The image displacement module includes a carrying base and a rotating base. The carrying base is adapted to control the rotating base to vibrate back forth within an angle, such that the imaging positions of the plane image on the horizontal direction are moved by a first distance and the imaging positions of the plane image on the vertical direction are moved by a second distance at the same time. Alternatively, the carrying base is adapted to control the rotating base to rotate relative to two axes of a reference plane, such that the plane image are moved by a distance along one of a plurality of movement directions.

Abstract: An image displacement module is adapted for an optical apparatus to switch image positions of a plurality of plane image. The image displacement module includes a carrying base and a rotating base. The carrying base is adapted to control the rotating base to vibrate back forth within an angle, such that the imaging positions of the plane image on the horizontal direction are moved by a first distance and the imaging positions of the plane image on the vertical direction are moved by a second distance at the same time. Alternatively, the carrying base is adapted to control the rotating base to rotate relative to two axes of a reference plane, such that the plane image are moved by a distance along one of a plurality of movement directions.

Abstract: A cooling module includes a casing with a thermal-transmittance wall having an interior surface and an exterior surface, a coolant inlet, a vapor outlet, and a converting component with a plurality of orifices and dividing an interior of the casing into a coolant chamber and a vaporization chamber. A liquid coolant is ejected through the plurality of orifices to form plumes toward the interior surface of the thermal-transmittance wall and exchange heat with the thermal-transmittance wall resulting in coolant vapor. In a cooling system, a vapor conduit then carries the vapor to a condenser, and a coolant conduit returns the condensed coolant to the cooling module. The cooling system is used to cool a lamp device.

Abstract: A lamp device includes a lamp housing, a light emitting component serving as a heat source and a cooling system. The cooling system includes a liquid coolant, a cooling module, a vapor conduit, a coolant conduit, and a condenser. The cooling module includes a casing and a converting component. The casing has a thermal-transmittance wall having an interior surface and an exterior surface, a coolant inlet and a vapor outlet. The converting component divides an interior of the casing into a coolant chamber and a vaporization chamber. The converting component is formed with a plurality of orifices for permitting the liquid coolant in the coolant chamber to be ejected therethrough to form plumes of the liquid coolant that travel toward the interior surface of the thermal-transmittance wall and that exchange heat with the thermal-transmittance wall to result in coolant vapor flowing out of the vaporization chamber via the vapor outlet.

Abstract: A heat dissipation system includes a cooling device, a condenser, a vapor conveying duct and a cooling liquid conveying duct. The cooling device includes a housing, and an orifice plate dividing an inner space of the housing into a liquid supply chamber and an evaporation chamber proximate to the heat source, and formed with multiple micro orifices each having a diameter ranging from 5 to 1000 micrometers. The condenser includes a fluid inlet, a condensing chamber and a fluid outlet. The vapor conveying duct connects a vapor outlet of the housing and the fluid inlet of the condenser. The cooling liquid conveying duct connects a cooling liquid inlet of the housing and a fluid outlet of the condenser.

Abstract: A projection display system comprises an illumination device, a prism assembly, a projection lens and a reflective light valve. The prism assembly has a first light incident surface, a first light emitting surface and a second light emitting surface. The first light emitting surface is an optical curved surface. An illumination beam is incident on the light valve after it enters the prism assembly from the first light incident surface. A modulated beam is generated after it is processed through the light valve. Finally, the modulated beam is projected into the projection lens through the prism assembly. Because a surface of the prism assembly is set to be an optical curved surface to replace a lens in the projection lens or the illumination device, a back focal length of the system is shortened and the projection lens or the illumination device is simplified.

Abstract: A digital light processing (DLP) projection apparatus including an illumination system, a digital micro-mirror device (DMD) and an imaging system is provided. The DMD having a common plane and micro mirrors disposed on the common plane is disposed on a transmission path of the illumination beam to convert an illumination beam from the illumination system into an imaging beam into a screen. The imaging system includes a projection lens disposed on a transmission path of the imaging beam and a total internal reflection (TIR) prism disposed between the DMD and the projection lens. The projection lens has an optical axis, which is not parallel to a normal vector of the common plane and a chief beam of the imaging beam. At least one of the normal vectors of the surfaces of the TIR prism opposite to the projection lens and the DMD is not parallel to the optical axis.

Abstract: The optical system of a projection display apparatus. The projection display apparatus includes a light source, a prism, a light valve, and a projection lens. A light beam emitted from the light source impinges into the prism and passes through the first surface of the prism directly to illuminate the light valve which is placed near the first surface and parallels the first surface. By the reflection of the light valve, the light beam impinges into the first surface again, and illuminates a total internal reflection surface with an incidental angle large than the critical total reflection angle, so as to reflect the light beam out of the second surface of the prism and impinge to projection lens to form an image. Therefore, the optical system can increase the transmission and decrease the number of components, and reduce its overall volume.

Abstract: A projection display system comprises an illumination device, a prism assembly, a projection lens and a reflective light valve. The prism assembly has a first light incident surface, a first light emitting surface and a second light emitting surface. The first light emitting surface is an optical curved surface. An illumination beam is incident on the light valve after it enters the prism assembly from the first light incident surface. A modulated beam is generated after it is processed through the light valve. Finally, the modulated beam is projected into the projection lens through the prism assembly. Because a surface of the prism assembly is set to be an optical curved surface to replace a lens in the projection lens or the illumination device, a back focal length of the system is shortened and the projection lens or the illumination device is simplified.

Abstract: An optical projection apparatus includes an illumination system, a projection lens unit, a reflective light valve, a first beam breaker and a second beam breaker. A light beam is provided by the illumination system. The projection lens unit and the reflective light valve are disposed on the transmission path of the light beam, and the reflective light valve is disposed between the illumination system and the projection lens unit. The first beam breaker and the second beam breaker are used to cut into the transmission path of the light beam from different directions to block a part of the light beam, and part of the light beam passes through the first beam breaker and the second beam breaker. The darker image projected by the optical projection apparatus has higher contrast and better uniformity.

Abstract: An optical system disposes a total reflection lens between a light valve and a projection lens. When a white light beam, emitting from a light source, passes through a color-generating device, the color of the light beam is sequentially converted into red, green, and blue primaries, and uniformed by an integrator. Then, the light beam impinges into the total reflection lens and is reflected to the light valve. The light valve reflects the light beam into a projection lens to be projected on a screen. Therefore, this invention increases the projection efficiency, and reduces the bulk and components of the optical system.

Abstract: An optical system disposes a total reflection lens between a light valve and a projection lens. When a white light beam, emitting from a light source, passes through a color-generating device, the color of the light beam is sequentially converted into red, green, and blue primaries, and uniformed by an integrator. Then, the light beam impinges into the total reflection lens and is reflected to the light valve. The light valve reflects the light beam into a projection lens to be projected on a screen. Therefore, this invention increases the projection efficiency, and reduces the bulk and components of the optical system.

Abstract: The optical system of a projection display apparatus comprises a light source, a prism, a light valve, and a projection lens. Wherein a light beam emitting from the light source impinges into the prism, and passes through the first surface of the prism directly to illuminate the light valve which is placed near the first surface and parallels the first surface. By the reflection of the light valve, the light beam impinges into the first surface again, and illuminates a total internal reflection surface with an incidental angle large than the critical total reflection angle, so as to reflect the light beam out of the second surface of the prism and impinge to projection lens to form an image. Therefore, the optical system can increase the transmission and decrease the components, and the volume of it will be more compact.

Abstract: A shading device of LCD projecting plate has a pair of shading board being capable of being adjusted to shade the rest projecting areas which are uncovered by the plate and to project the drawing or letters on the optical glass to a wall or a screen clearly whenever used with any projectors.