Abstract: A fabricating apparatus for a light tunnel is provided, which comprises a core rod, a fixing block and a moving block. The light tunnel comprises a plurality of reflecting sheets, and each reflecting sheet leans on both a plurality of first bumps of the fixing block and a plurality of second bumps of the moving block to define a first inner profile and a second inner profile of the light tunnel, respectively. Thereby, the fabricating apparatus defines the inner scope of the light tunnel, and the inner scope of the light tunnel can be easily and stably controlled. Furthermore, a fabricating method for fabricating the light tunnel is also provided.

Abstract: A light tunnel for use in an optical projection system, comprising: a plurality of reflecting plates, each said reflecting plate being disposed between and connected to the other two said reflecting plates, so that a light passage with a hollow structure is defined by said plurality of reflecting plates. At least one of said reflecting plates has a first surface in an inclined structure, said reflecting plate having said first surface is disposed between and obliquely connected to the other two said reflecting plates for forming said light passage having a non-rectangular cross section, and said first surface of said reflecting plate is abutted against an adjoined reflecting plate to form a junction with no gap between said first surface of said reflecting plate and said adjoined reflecting plate.

Abstract: A head-up projection system is disclosed. The head-up projection system comprises a mounting member and a portable projector. The mounting member has a receptacle, and the mounting member is mounted on a roof of a vehicle. The portable projector is detachably installed in the receptacle of the mounting member and configured to connect with a mobile communication and computing device with a navigation function for displaying a navigation information image in the vehicle from the mobile communication and computing device.

Abstract: A head-up projection system is disclosed. The head-up projection system comprises a mounting member and a portable projector. The mounting member has a receptacle, and the mounting member is mounted on a roof of a vehicle. The portable projector is detachably installed in the receptacle of the mounting member and configured to connect with a mobile communication and computing device with a navigation function for displaying a navigation information image in the vehicle from the mobile communication and computing device.

Abstract: A lens assembly is provided. The lens assembly comprises a lens and a bearing seat. The bearing seat has a bearing surface for bearing the lens, while the bearing surface is adapted to adhere to the lens so that the lens is fixed on the bearing seat.

Abstract: A light tunnel for use in an optical projection system, comprising: a plurality of reflecting plates, each said reflecting plate being disposed between and connected to the other two said reflecting plates, so that a light passage with a hollow structure is defined by said plurality of reflecting plates. At least one of said reflecting plates has a first surface in an inclined structure, said reflecting plate having said first surface is disposed between and obliquely connected to the other two said reflecting plates for forming said light passage having a non-rectangular cross section, and said first surface of said reflecting plate is abutted against an adjoined reflecting plate to form a junction with no gap between said first surface of said reflecting plate and said adjoined reflecting plate.

Abstract: An aperture adjusting device is disclosed. The aperture adjusting device includes a support frame, a gear ring, at least one blade, and a connector. The support frame includes an aperture, and a guiding slot. The gear ring is rotatably disposed on a first side of the support frame. The blade is swingably disposed on a second side of the support frame, and used to partially cover the aperture. The connector is fixed to the gear ring, and passes through the guiding slot to connect with the blade. The gear ring is adapted to rotate to make the connector move along the guiding slot to drive the blade to swing.

Abstract: A fabricating apparatus for a light tunnel is provided, which comprises a core rod, a fixing block and a moving block. The light tunnel comprises a plurality of reflecting sheets, and each reflecting sheet leans on both a plurality of first bumps of the fixing block and a plurality of second bumps of the moving block to define a first inner profile and a second inner profile of the light tunnel, respectively. Thereby, the fabricating apparatus defines the inner scope of the light tunnel, and the inner scope of the light tunnel can be easily and stably controlled. Furthermore, a fabricating method for fabricating the light tunnel is also provided.

Abstract: A lens assembly is provided. The lens assembly comprises a lens and a bearing seat. The bearing seat has a bearing surface for bearing the lens, while the bearing surface is adapted to adhere to the lens so that the lens is fixed on the bearing seat.

Abstract: An aperture adjusting device is disclosed. The aperture adjusting device includes a support frame, a gear ring, at least one blade, and a connector. The support frame includes an aperture, and a guiding slot. The gear ring is rotatably disposed on a first side of the support frame. The blade is swingably disposed on a second side of the support frame, and used to partially cover the aperture. The connector is fixed to the gear ring, and passes through the guiding slot to connect with the blade. The gear ring is adapted to rotate to make the connector move along the guiding slot to drive the blade to swing.