Abstract: A projection apparatus includes an illumination system, a projection module and at least a filter. The illumination system is for generating an illumination light beam. The projection module is for receiving the illumination light beam from the illumination system and projecting an image according to the illumination light beam. The filter is disposed in the illumination system and located on a light path defined by the illumination light beam. The filter comprises a first filtering part and a second filtering part. A minimum wavelength of a wavelength range of transmitted light of the second filtering part is larger than a minimum wavelength of a wavelength range of transmitted light of the first filtering part, or a maximum wavelength of a wavelength range of transmitted light of the second filtering part is smaller than a maximum wavelength of a wavelength range of transmitted light of the first filtering part.

Abstract: A total internal reflection prism of a projection apparatus including a first prism, a second prism and a total-reflection-inhibiting layer is provided. The first prism has a first surface, a second surface and a third surface. The second prism has a light incident surface and a light-emitting surface opposite to the first surface. A gap exists between the first surface and the light-emitting surface. The total-reflection-inhibiting layer is connected between a part of the light-emitting surface and a part of the first surface. By setting the total-reflection-inhibiting layer, the probability of total reflection of an illumination beam transmitted inside the total internal reflection prism is reduced. Therefore, the efficiency of utilizing the illumination beam is increased and the brightness of an image is promoted.

Abstract: The present invention provides a correcting apparatus for correcting images projected from a projection system. The correcting apparatus includes a correcting module and a projection lens. The correcting module shields a light signal for producing a corrected light signal. The projection lens receives the corrected light signal for producing an image light signal. The correcting module is disposed on a first outer circumference at one end of the projection lens.

Abstract: A projection system has an illumination apparatus, a converging lens array, an imaging apparatus, and a projection lens. The illumination apparatus has a light source, a light collecting element, and a rod integrator. The light collecting element has a frustum shape, and connects to the rod integrator at an end with a smaller surface area. Another end of the light collecting element with a larger surface area faces the light source. The light beam from the light source enters the light collecting element and is reflected by the light collecting element into the rod integrator. The rod integrator homogenizes the light beam and reflects the light beam to the imaging apparatus, which transforms the light beam into an image beam and displays an image to a surface through the projection lens.

Abstract: The invention provides a three-dimensional image projecting apparatus. The three-dimensional image projecting apparatus comprises a light signal generator, a filter device, a focusing device and a reflecting device. The light signal generator is used for generating a projection light signal. The filter device filters the projection light signal for generating a set of polarized light signal. The focusing device receives the set of polarized light signal for generating a set of focusing light signal. The reflecting device receives the set of focusing light signal for generating a set of reflected light signal.

Abstract: An illumination system includes a first reflective element, a first lamp, a second lamp and a second reflective element. The second lamp is disposed on a second axis, the first reflective element and the first lamp are disposed at opposite sides of the second axis and on a first axis intersecting the second axis. The first lamp and the second lamp have a first light emitting section, a second light emitting section and emit a first light beam, a second light beam respectively. The second reflective element is located in front of a part of the first light emitting section and the second light emitting section. The first and second light beams are reflected by at least one of the first and second lamps and the first and second reflective elements, and then are combined with each other and transmit in a direction away from the second lamp.

Abstract: A projection apparatus includes a light source module, a first color wheel, a second color wheel and a control unit. The light source module provides an illuminating light beam. The first and the second color wheels are disposed on an optical path of the illuminating light beam. The first and the second color wheels respectively have a first white segment and a second white segment with unequal areas. The control unit is electrically coupled to the first and the second color wheels. In a first mode, the control unit controls the first white segment to stop on the optical path and controls the second color wheel to rotate. In a second mode, the control unit controls the second white segment to stop on the optical path and controls the first color wheel to rotate.

Abstract: An optical projection device including an illumination system, a reflective light valve and a projection lens is provided. The adjustable reflection sheet is disposed behind the adjustable rod integrator along the light transmission path of the light beam. In addition, the reflective light valve is disposed behind the adjustable reflection sheet along the light transmission path of the light beam. The adjustable rod integrator can shift the light transmission path of the light beam so as to be incident to the reflective light valve. Moreover, the projection lens is disposed behind the reflective light valve along the light transmission path of the light beam. The adjustable reflection sheet can shift the light transmission path of the light beam so as to pass through the stopper of the projection lens.

Abstract: A projection apparatus having a single reflective light valve is provided. The projection apparatus includes a non-telecentric illumination system, a movable projection lens and a reflective light valve. The non-telecentric illumination system includes a light source and a lens. The light source is suitable for providing a light beam and the lens is disposed on the transmission path of the light beam. The movable projection lens is disposed behind the lens on the transmission path of the light beam for projecting an image. An image projected from the projection apparatus has an offset between 100%˜150%. The reflective light valve is disposed between the lens and the movable projection lens on the transmission path of the light beam. The reflective light valve has rows of horizontally arranged pixels.

Abstract: An illumination system including an optical element, a primary light source, an auxiliary light source, and a light guide element is provided. The primary light source and the auxiliary light source are disposed adjacent to the light incident end of the optical element. The primary light source provides a primary light beam, and the auxiliary light source provides an auxiliary light beam. The duration for the primary light source to reach the maximum light-emitting luminance is longer than that of the auxiliary light source. The light guide element is shifted in or away from the transmission path of the primary light beam, so that the illumination system provides an illumination light beam with an appropriate luminance. An optical projection apparatus having the above-described illumination system capable of promptly displaying images upon turning on is provided.

Abstract: A projection device having single light valve has a light source, a projection lens, an imaging unit and a beam breaker. Moreover, the imaging unit has a color production device and a valve. When the beam provided by light source propagates to the color production device, the color production device converts the beam into several different color beams in an order. Thereafter, the beams propagate to the beam breaker, and the beam breaker breaks the beam propagating through within a definite time according to the states of imaging unit. Afterwards, the beams that are not broken are converted into images by the light valve in order, and projected on a screen by projection lens. The beam breaker module can enable the projection device having single light to have several situation modes, and maintain the imaging contrast.

Abstract: An image projection system includes a light source device for providing unified light, a light modulator for receiving and modulating the unified light, and a projection device for receiving and projecting the modulated light onto a screen. The light source device includes a light-emitting unit capable of generating source light, and a light-uniform unit that has a light entrance side disposed to receive the source light, and a light exit side disposed to permit the unified light to exit the light-uniform unit. The light exit side includes an active area and an overfill area surrounding the active area. The light source device further includes a reflecting unit disposed to cover the overfill area such that the unified light at the overfill area that impinges the reflecting unit is reflected back toward the light-uniform unit and the light-emitting unit.

Abstract: An illumination system for a projector includes a light source, a light valve and a movable lens set between the light source and the light valve. The movable lens set has lenses whose relative positions are alterable manually or automatically depending on different input source thereby to adjust the illumination area of the illumination system on the light valve so that the light source can converge light projection on the active area of the light valve without wasting the light source. And the optical structure of the illumination system does not have to be redesigned or changed for different resolution of light valve. Production cost of the illumination system of the projectors can be reduced.

Abstract: An optical projection apparatus including an illumination system, a reflective light valve, an imaging system, and a reflective component is provided. The illumination system is suitable for providing a light beam and the reflective light valve is disposed on a transmission path of the light beam. The reflective light valve is used for converting the light beam into an image. In addition, the imaging system is disposed on the transmission path of the image. The reflective component is disposed both between the reflective light valve and the imaging system and between the reflective light valve and the illumination system, and disposed on the transmission path of the light beam and the image. The reflective component is used for reflecting the light beam onto the reflective light valve, and then reflecting the image produced by the reflective light valve into the imaging system.

Abstract: An optical projection device including an illumination system, a reflective light valve and a projection lens is provided. The adjustable reflection sheet is disposed behind the adjustable rod integrator along the light transmission path of the light beam. In addition, the reflective light valve is disposed behind the adjustable reflection sheet along the light transmission path of the light beam. The adjustable rod integrator can shift the light transmission path of the light beam so as to be incident to the reflective light valve. Moreover, the projection lens is disposed behind the reflective light valve along the light transmission path of the light beam. The adjustable reflection sheet can shift the light transmission path of the light beam so as to pass through the stopper of the projection lens.

Abstract: A projection apparatus comprising a light valve disposed in a housing having an opening is provided. The opening is sealed by a transparent plate to separate inside and outside of the housing. A lens and a light source providing a light beam are disposed outside of housing. The light beam is guided by the lens and passes through the transparent plate to the light valve, thus a modulated light is formed on the light valve. The projection lens is used to guide the modulated light to project an image on a screen. A focus of the projection lens is adjustable to make the image on the screen clear and precise.

Abstract: A projection device having single light valve has a light source, a projection lens, an imaging unit and a beam breaker. Moreover, the imaging unit has a color production device and a valve. When the beam provided by light source propagates to the color production device, the color production device converts the beam into several different color beams in an order. Thereafter, the beams propagate to the beam breaker, and the beam breaker breaks the beam propagating through within a definite time according to the states of imaging unit. Afterwards, the beams that are not broken are converted into images by the light valve in order, and projected on a screen by projection lens. The beam breaker module can enable the projection device having single light to have several situation modes, and maintain the imaging contrast.

Abstract: A single reflective light valve projection device comprising a non-telecentric lighting system, a projection lens and a reflective light valve is provided. The non-telecentric lighting system comprises a light source and a lens. The light source provides a light beam. The lens is disposed in the transmission path of the light beam. The projection lens is disposed behind the lens and in the transmission path of the light beam. The reflective light valve is disposed between the lens of the non-telecentric lighting system and the projection lens and in the transmission path of the light beam. The reflective light valve comprises many horizontally aligned rows of pixels. A line joining the center of the projection lens to the center of the lens forms an angle smaller than ?/4 with respect to a horizontal line to provide side projection in the horizontal direction.

Abstract: The present invention provides a correcting apparatus for correcting images projected from a projection system. The correcting apparatus includes a correcting module and a projection lens. The correcting module shields a light signal for producing a corrected light signal. The projection lens receives the corrected light signal for producing an image light signal. The correcting module is disposed on a first outer circumference at one end of the projection lens.

Abstract: The invention provides a three-dimensional image projecting apparatus. The three-dimensional image projecting apparatus comprises a light signal generator, a filter device, a focusing device and a reflecting device. The light signal generator is used for generating a projection light signal. The filter device filters the projection light signal for generating a set of polarized light signal. The focusing device receives the set of polarized light signal for generating a set of focusing light signal. The reflecting device receives the set of focusing light signal for generating a set of reflected light signal.