Abstract: A tool-free hard disk bracket includes a base having abase body with a guide groove, and an engaging member connected to the base body. A frame includes a first side arm movably engaging with the engaging member. A handgrip is rotatably connected to one end of the base body. An operating unit includes an operating member releasably engaging with the handgrip and having a rotating shaft portion inserted rotatably and movably into the guide groove. The operating member is operated to rotate and release engagement with the handgrip, and is further operated to move along the guide groove toward the engaging member to push the engaging member to pivot and release engagement with the first side arm.

Abstract: A tool-free hard disk bracket includes a base having abase body with a guide groove, and an engaging member connected to the base body. A frame includes a first side arm movably engaging with the engaging member. A handgrip is rotatably connected to one end of the base body. An operating unit includes an operating member releasably engaging with the handgrip and having a rotating shaft portion inserted rotatably and movably into the guide groove. The operating member is operated to rotate and release engagement with the handgrip, and is further operated to move along the guide groove toward the engaging member to push the engaging member to pivot and release engagement with the first side arm.

Abstract: An optical engine is provided, including an imaging module, a driver module and a connecting unit. The imaging module includes an imaging housing with an imaging space and an imaging unit installed in the imaging space. The imaging housing is made of a conductive material. The driver module includes a driver housing with a driver space and a driver circuit board installed in the driver space. The connecting unit includes at least one of the cables is electrically connected to the imaging unit and the driver circuit board and at least a protruding module protruding from the imaging housing (or the driver housing) to contact with the driver housing (or the imaging housing). The cable is installed in the protruding module made of a conductive material.

Abstract: A light-filtering module includes a light-source module, a dichroic mirror and a first image unit. The light-source module outputs a light beam. The dichroic mirror divides the light beam into a first colored light and a dual colored light. The first image unit provides the first colored light with image information. The light-filtering module includes a light-filtering unit and a driving unit. The light-filtering unit is located between the dichroic mirror and the first image unit is located at a light path of the first colored light. The driving unit includes a coupling element coupled to the light-filtering unit and a driving element utilized to drive the coupling element. The driving element drives the light-filtering unit, switching between a first status and a second status by the coupling element. A wide-wavelength spectrum and a narrow-wavelength spectrum are provided when the light-filtering unit is in the first and second statuses, respectively.

Abstract: A light emitting system is disclosed, including a light generator, a complex lens and an activating unit. The light generator provides a light beam emitted in a first direction in parallel to an optic axis. The complex lens, disposed on a path of the light beam, includes a plurality of micro structures for refracting the light beam. The activating unit includes an activating member coupled to the complex lens. The activating member activates the complex lens with an activation frequency to reciprocally move in a second direction alternate to the first direction. By the disposition of the complex lens, the energy of the light beam is uniformly distributed. Additionally, speckle produced by the light beam is reciprocally moved within an area by the activating unit, creating a photogene reaction, to successfully eliminate existence of the speckle.

Abstract: An optical engine is provided, including an imaging module, a driver module and a connecting unit. The imaging module includes an imaging housing with an imaging space and an imaging unit installed in the imaging space. The imaging housing is made of a conductive material. The driver module includes a driver housing with a driver space and a driver circuit board installed in the driver space. The connecting unit includes at least one of the cables is electrically connected to the imaging unit and the driver circuit board and at least a protruding module protruding from the imaging housing (or the driver housing) to contact with the driver housing (or the imaging housing). The cable is installed in the protruding module made of a conductive material.

Abstract: A light-filtering module includes a light-source module, a dichroic mirror and a first image unit. The light-source module outputs a light beam. The dichroic mirror divides the light beam into a first colored light and a dual colored light. The first image unit provides the first colored light with image information. The light-filtering module includes a light-filtering unit and a driving unit. The light-filtering unit located between the dichroic mirror and the first image unit is located at a light path of the first colored light. The driving unit includes a coupling element coupled to the light-filtering unit and a driving element utilized to drive the coupling element. The driving element drives the light-filtering unit, switching between a first status and a second status by the coupling element, and a wide-wavelength spectrum and a narrow-wavelength spectrum are provided when the light-filtering unit is in the first and second statuses, respectively.

Abstract: A light emitting system is disclosed, including a light generator, a complex lens and an activating unit. The light generator provides a light beam emitted in a first direction in parallel to an optic axis. The complex lens, disposed on a path of the light beam, includes a plurality of micro structures for refracting the light beam. The activating unit includes an activating member coupled to the complex lens. The activating member activates the complex lens with an activation frequency to reciprocally move in a second direction alternate to the first direction. By the disposition of the complex lens, the energy of the light beam is uniformly distributed. Additionally, speckle produced by the light beam is reciprocally moved within an area by the activating unit, creating a photogene reaction, to successfully eliminate existence of the speckle.