Abstract: A device includes an interposer, which includes a substrate having a top surface. An interconnect structure is formed over the top surface of the substrate, wherein the interconnect structure includes at least one dielectric layer, and metal features in the at least one dielectric layer. A plurality of through-substrate vias (TSVs) is in the substrate and electrically coupled to the interconnect structure. A first die is over and bonded onto the interposer. A second die is bonded onto the interposer, wherein the second die is under the interconnect structure.

Abstract: A projection device of the invention includes a housing, a light engine disposed in the housing, a lens disposed on a lateral side of the housing, and a light direction regulating mechanism disposed on the lateral side and in front of the lens. The light direction regulating mechanism is able to determine propagation of the light in a selected direction after the light passes through the lens.

Abstract: A pico projector of the invention includes an illuminating module, an imaging module, and a lens-focusing module. The illuminating module is configured to emit light. The imaging module is configured to add picture messages into the light to generate an image and project the image. The lens-focusing module is configured to regulate a focal length of the imaging module.

Abstract: A projection device of the invention includes a housing, a light engine disposed in the housing, a lens disposed on a lateral side of the housing, and a light direction regulating mechanism disposed on the lateral side and in front of the lens. The light direction regulating mechanism is able to determine propagation of the light in a selected direction after the light passes through the lens.

Abstract: An electronic device includes a lens assembly, a lens focusing rod, a power switch and a lens protective cover. When the lens protective cover is located in the first position, the lens assembly is shielded by the lens protective cover, the power switch is turned off, and the lens protective cover is separated from the lens focusing rod. When the lens protective cover is located in the second position, the power switch is turned on, and the lens protective cover is contacted with the lens focusing rod. When the lens protective cover is moved between the second position and the third position, the power switch is turned on, and the lens assembly is driven by the lens protective cover through the lens focusing rod for focusing operation.

Abstract: An electronic device includes a lens assembly, a lens focusing rod, a power switch and a lens protective cover. When the lens protective cover is located in the first position, the lens assembly is shielded by the lens protective cover, the power switch is turned off, and the lens protective cover is separated from the lens focusing rod. When the lens protective cover is located in the second position, the power switch is turned on, and the lens protective cover is contacted with the lens focusing rod. When the lens protective cover is moved between the second position and the third position, the power switch is turned on, and the lens assembly is driven by the lens protective cover through the lens focusing rod for focusing operation.

Abstract: An automatic focus system of a projector includes a projecting module, an image catching module, a memory, a micro processor, and a focusing module. The projecting module has an image light source to provide image light, and a projecting lens to project the image light on a screen. The image catching module senses an image on the screen. The microprocessor calculates the sensed image to have a definition value of the image and save the definition value in the memory. The focusing module may move the projecting lens is moved along an optical axis under a control of microprocessor. The microprocessor compares the definition values to control the focusing module to move the cam to a position where the projector may project a clear image on the screen.