Abstract: An adhesive composition is provided. The adhesive composition includes 3˜10 parts by weight of polyvinylidene fluoride (PVDF), wherein the polyvinylidene fluoride includes two polyvinylidene fluorides with different weight average molecular weights ranging from 20000 to 3000000, and at least one of the polyvinylidene fluorides has a carboxyl group; 0.1-0.5 parts by weight of polyvinyl butyral (PVB); and 0.1-3 parts by weight of a conductive powder.

Abstract: An adhesive composition is provided. The adhesive composition includes 3˜10 parts by weight of polyvinylidene fluoride (PVDF), wherein the polyvinylidene fluoride includes two polyvinylidene fluorides with different weight average molecular weights ranging from 20000 to 3000000, and at least one of the polyvinylidene fluorides has a carboxyl group; 0.1-0.5 parts by weight of polyvinyl butyral (PVB); and 0.1-3 parts by weight of a conductive powder.

Abstract: A color wheel module for use in a projection apparatus is disclosed. The projection apparatus comprises an optical engine, which comprises a chassis and an electrical socket. The electrical socket is disposed on the chassis. The color wheel module comprises a color wheel, a housing module and a connecting device. The connecting device comprises a fastening device and an electrical connector. The color wheel and the electrical connector are disposed on the housing module, wherein the electric connector is adapted to electrically connect to, and detach from, the electrical socket when the housing module is fastened onto the chassis through the fastening device.

Abstract: A carrier apparatus for use with an optical engine of a projection device is disclosed. The carrier apparatus includes a main frame and a support frame which is removably disclosed on the main frame. An adjustable mechanism includes a push device and an adjustable device. The push device is disposed onto an end portion of the support frame, while the adjustable device is disposed onto the push device. Operating the adjustable device can locally change the height of the support frame with respect to the main frame, thereby precisely positioning the optical engine in a suitable manner so that the image projected on the screen can be uniform without distortion.

Abstract: A color wheel module and an optical engine comprising the same are disclosed. The optical engine comprises a frame and a color wheel module, wherein the color wheel module comprises a color wheel, a connecting device, and a supporting chassis. The color wheel connects to the supporting chassis. The supporting chassis comprises a first fixing base and a second fixing base, wherein the connecting device connects the first fixing base and the second fixing base to the frame. In view of the center of the color wheel, the first fixing base is disposed opposite to or at an angle with the second fixing base.

Abstract: A light tunnel apparatus of an optical engine and a projection system comprising the light tunnel apparatus are provided. The projection system comprises an optical engine which includes a body and a light tunnel apparatus. The light tunnel apparatus comprises a light tunnel, a housing, a frame, and a positioning device. The light tunnel has a central axis. The housing is connected to the body while the frame is connected to the housing, and the light tunnel is disposed in the frame. The positioning device, disposed between the frame and the housing, provides at least a thrust substantially perpendicular to the central axis, whereby the thrust allows the frame to be restricted to move along an axial direction substantially parallel to the central axis.

Abstract: A lamp assembly of a projection apparatus which has a function of adjusting the position of the lamp device is disclosed. The lamp assembly includes an outer housing, a lamp module, a transversely adjustable device and a vertically adjustable device. The lamp module is detachably disposed in the outer housing with the transversely and vertically adjustable devices disposed on the outer housing. When the lamp module is located within the outer housing, the lamp module can be adjusted by operating the transversely and vertically adjustable devices.

Abstract: An imaging system for an optical engine of projection apparatus comprises a body, a prism device, a digital micromirror assembly, a projection lens assembly, and an illumination system. A first slide mechanism disposed between the prism device and the body enables the prism device and the body to move transversely, relative to each other, to form an adjustable distance between the projection lens assembly and the prism device. A second slide mechanism disposed between the digital micromirror assembly and the prism device enables the digital micromirror assembly and the prism device to move transversely, relative to each other, to form an adjustable relative position between an effective optical processing area of the digital micromirror assembly and the bottom of the prism device. Users or technicians may adjust the relative movement between the assemblies conveniently using the springs of a fastening device to fasten the prism device to the body.

Abstract: A light tunnel apparatus of an optical engine and a projection system comprising the light tunnel apparatus are provided. The projection system comprises an optical engine which includes a body and a light tunnel apparatus. The light tunnel apparatus comprises a light tunnel, a housing, a frame, and a positioning device. The light tunnel has a central axis. The housing is connected to the body while the frame is connected to the housing, and the light tunnel is disposed in the frame. The positioning device, disposed between the frame and the housing, provides at least a thrust substantially perpendicular to the central axis, whereby the thrust allows the frame to be restricted to move along an axial direction substantially parallel to the central axis.

Abstract: A color wheel module for use in a projection apparatus is disclosed. The projection apparatus comprises an optical engine, which comprises a chassis and an electrical socket. The electrical socket is disposed on the chassis. The color wheel module comprises a color wheel, a housing module and a connecting device. The connecting device comprises a fastening device and an electrical connector. The color wheel and the electrical connector are disposed on the housing module, wherein the electric connector is adapted to electrically connect to, and detach from, the electrical socket when the housing module is fastened onto the chassis through the fastening device.

Abstract: A color wheel module and an optical engine comprising the same are disclosed. The optical engine comprises a frame and a color wheel module, wherein the color wheel module comprises a color wheel, a connecting device, and a supporting chassis. The color wheel connects to the supporting chassis. The supporting chassis comprises a first fixing base and a second fixing base, wherein the connecting device connects the first fixing base and the second fixing base to the frame. In view of the center of the color wheel, the first fixing base is disposed opposite to or at an angle with the second fixing base.

Abstract: A carrier apparatus for use with an optical engine of a projection device is disclosed. The carrier apparatus includes a main frame and a support frame which is removably disclosed on the main frame. An adjustable mechanism includes a push device and an adjustable device. The push device is disposed onto an end portion of the support frame, while the adjustable device is disposed onto the push device. Operating the adjustable device can locally change the height of the support frame with respect to the main frame, thereby precisely positioning the optical engine in a suitable manner so that the image projected on the screen can be uniform without distortion.

Abstract: A lamp assembly of a projection apparatus which has a function of adjusting the position of the lamp device is disclosed. The lamp assembly includes an outer housing, a lamp module, a transversely adjustable device and a vertically adjustable device. The lamp module is detachably disposed in the outer housing with the transversely and vertically adjustable devices disposed on the outer housing. When the lamp module is located within the outer housing, the lamp module can be adjusted by operating the transversely and vertically adjustable devices.

Abstract: An imaging system for an optical engine of projection apparatus comprises a body, a prism device, a digital micromirror assembly, a projection lens assembly, and an illumination system. A first slide mechanism disposed between the prism device and the body enables the prism device and the body to move transversely, relative to each other, to form an adjustable distance between the projection lens assembly and the prism device. A second slide mechanism disposed between the digital micromirror assembly and the prism device enables the digital micromirror assembly and the prism device to move transversely, relative to each other, to form an adjustable relative position between an effective optical processing area of the digital micromirror assembly and the bottom of the prism device. Users or technicians may adjust the relative movement between the assemblies conveniently using the springs of a fastening device to fasten the prism device to the body.

Abstract: An adjustment mechanism for a mirror of a projector is provided. The adjustment mechanism includes a supporting portion for supporting the mirror and an adjusting device. The supporting portion includes a first plate having a surface in contact with the mirror, a second plate connected with the top edge of the first plate and a resilience sheet disposed between the first plate and a housing of the projector, wherein the adjusting device passes through a hole of the second plate to be in contact with the housing and capable of being adjusted for rotating the mirror.

Abstract: An optical lens module adjustable in two dimensions, to adjust an optical axis aligned with a projection light beam. An inside lens holder lens is used to support the optical lens module. The optical lens has an optical axis. A frame is installed inside of an enclosure of a projector in which the optical lens module is installed. There is a tolerance window between the frame and the enclosure of the projector to allow the inside lens holder to move within the tolerance window. The inside lens holder and the lens can move up and down inside of the frame. According to the adjustment in two different directions, the optical path of the projection can be adjusted identical to the projection light beam.

Abstract: An adjustment mechanism for a mirror of a projector is provided. The adjustment mechanism includes a supporting portion for supporting the mirror and an adjusting device. The supporting portion includes a first plate having a surface in contact with the mirror, a second plate connected with the top edge of the first plate and a resilience sheet disposed between the first plate and a housing of the projector, wherein the adjusting device passes through a hole of the second plate to be in contact with the housing and capable of being adjusted for rotating the mirror.

Abstract: A fastening device for projector lamp. The fastening device includes a lamp, a lamp casing and a strip-shaped spring that fastens the lamp onto the lamp casing. The lamp casing has a first sidewall, a second sidewall, a bottom wall and an upper connective structure, together they encloses a central space. The first sidewall has a first opening and the second sidewall has a hook groove. There is a second opening between the second sidewall and the bottom wall. The spring has a first end and a second end. A central portion of the strip-shaped spring can be latched by the hook groove. The first end of the spring is fixed by the first opening on the first sidewall. The second end of the spring has an internal recess structure. The second end of the spring passes through the second opening and fastens onto a recess groove on the lamp. The deform stress produced by passing the spring through the first opening, the hook groove and the recess groove is capable fixing the lamp relative to the lamp casing.