Abstract: A projection display device (100) capable of providing a virtual keyboard function to the user, using a light source of a pico projector, is discussed. According to an embodiment, the projection display device includes a light source unit (110) configured to emit lights; a light combining unit (120) configured to generate a leakage light from the lights emitted by the light source (110) unit and to selectively combine the lights from the light source unit (110); an image projection unit (130) configured to project an image using the combined light from the light combining unit (120); and a virtual input unit (140) configured to project an input unit image (150) using the leakage light from the light combining unit (120).

Abstract: A projection display device (100) capable of providing a virtual keyboard function to the user, using a light source of a pico projector, is discussed. According to an embodiment, the projection display device includes a light source unit (110) configured to emit lights; a light combining unit (120) configured to generate a leakage light from the lights emitted by the light source (110) unit and to selectively combine the lights from the light source unit (110); an image projection unit (130) configured to project an image using the combined light from the light combining unit (120); and a virtual input unit (140) configured to project an input unit image (150) using the leakage light from the light combining unit (120).

Abstract: A projection display device (100) capable of providing a virtual keyboard function to the user, using a light source of a pico projector, is discussed. According to an embodiment, the projection display device includes a light source unit (110) configured to emit lights; a light combining unit (120) configured to generate a leakage light from the lights emitted by the light source (110) unit and to selectively combine the lights from the light source unit (110); an image projection unit (130) configured to project an image using the combined light from the light combining unit (120); and a virtual input unit (140) configured to project an input unit image (150) using the leakage light from the light combining unit (120).

Abstract: A projection display device (100) capable of providing a virtual keyboard function to the user, using a light source of a pico projector, is discussed. According to an embodiment, the projection display device includes a light source unit (110) configured to emit lights; a light combining unit (120) configured to generate a leakage light from the lights emitted by the light source (110) unit and to selectively combine the lights from the light source unit (110); an image projection unit (130) configured to project an image using the combined light from the light combining unit (120); and a virtual input unit (140) configured to project an input unit image (150) using the leakage light from the light combining unit (120).

Abstract: A projection system is disclosed. An object of the present invention is to provide a projection system that is able to present brighter images efficiently. A projection system includes a plurality of light sources generating lights, a light source composition part comprising a plurality of protrusions facing the light sources, respectively, to compose the lights incident from the light sources, and an optical system emitting the light outside from the light source composition part.

Abstract: Provided is a smart cup having a sound player which is driven by sensors controlled by a micro-controller, to thus control the output of the sound player and extend function and use of a general cup to thereby give help to a daily life of users who use the smart cup. The smart cup includes: a main body of a cup; a play module case; and a silicon coupling portion. The play module detects whether a temperature change occurs in the cup or water-soluble liquid is contained in the cup, to thereby reproduce a built-in sound and includes: a cup material selection button unit; a power switch; a temperature sensor which measures temperature of the cup; an electrostatic capacity proximity sensor which measures a change of an electrostatic capacity; an electrostatic capacity analysis integrated circuit which detects sensitivity of the electrostatic capacity proximity sensor, a detection distance, a changed electrostatic capacity; and a micro-controller which determines whether or not sound will be reproduced.

Abstract: A concept of improving a resolution by using human's visual characteristics is provided. A display device includes an image forming unit forming an image by using an emitted light and an inputted image signal, a projection unit projecting the image formed by the image forming unit onto a screen, and a movable displacement plate displacing the image displayed on the screen. As a result, a viewer can view the image at an improved resolution.

Abstract: A reflective lighting optical system minimizes a back focusing distance and a depth of the system, and improves a lighting efficiency by disposing a wire grid type PBS (Polarized Beam Splitter) at an oblique angle with respect to a short side of an imager.

Abstract: A reflective illuminating optical system on silicon, more particularly, to an illuminating optical system is provided, in which R, G, and B signals reflected from a LCoS panel (Liquid Crystal on Silicon panel) in a projection system do not pass through wire grid type PBSs (Polarized Beam Splitters) but are reflected by the wire grid type PBSs (Polarized Beam Splitters) so that astigmatism is suppressed and illuminating efficiency is improved.

Abstract: An integrator of an optical device using a color drum is disclosed. The integrator includes an opening receiving a light generated from a lamp, an optical path part reflecting and passing forward the light received at the opening, a mirror part refracting and totally reflecting the light passed through the optical path part and changing a direction of the light being transmitted, a polarization plate transmitting light rays having a constant polarization direction, among the reflected light, and reflecting remaining light rays having other polarization directions, and a wave plate changing a phase of the light reflected from the polarization plate.

Abstract: An integrator and a display apparatus using the same simplify the structure of an optical system and minimize optical loss. The integrator homogenizes, polarizes and recaptures incident lights. The optical loss can be reduced by using a color drum and a color wheel engaged with the integrator. In order to minimize the optical loss, a polarization conversion device where a color bar filter or color switch is directly adhered to an integrator is used. The polarization conversion device can be applied to a projector for embodying small images into large ones.

Abstract: Illumination system in a liquid crystal projector for improving an optical efficiency of a fly eye lens, including a light source, a first fly eye lens having first lens cells each with a first center point, and second lens cells each with a second center point disposed in outer parts of the first lens cells, for receiving beams of lights from the light source in correspondence to the first center points of the first lens cells and the second center points of the second lens cells, respectively, and a second fly eye lens having a plurality of lens cells for refracting the beams from the first fly eye lens into parallel beams.

Abstract: There is provided a projection display apparatus using a polarization beam splitter having two splitting surfaces, which can simplify its structure and reduce its cost. The projection display apparatus includes the polarization beam splitter that has a first splitting surface for transmitting or reflecting a red light and a second splitting surface for transmitting or reflecting a green light and a blue light. A polarization state converter that is provided in the polarization beam splitter converts the polarization states of the green and blue lights and applies the converted green and blue lights to the polarization beam splitter.

Abstract: A reflective illuminating optical system on silicon, more particularly, to an illuminating optical system is provided, in which R, G, and B signals reflected from a LCoS panel (Liquid Crystal on Silicon panel) in a projection system do not pass through wire grid type PBSs (Polarized Beam Splitters) but are reflected by the wire grid type PBSs (Polarized Beam Splitters) so that astigmatism is suppressed and illuminating efficiency is improved.

Abstract: An integrator and a display apparatus using the same simplify the structure of an optical system and minimize optical loss. The integrator homogenizes, polarizes and recaptures incident lights. The optical loss can be reduced by using a color drum and a color wheel engaged with the integrator. In order to minimize the optical loss, a polarization conversion device where a color bar filter or color switch is directly adhered to an integrator is used. The polarization conversion device can be applied to a projector for embodying small images into large ones.

Abstract: There is provided a projection display apparatus using a polarization beam splitter having two splitting surfaces, which can simplify its structure and reduce its cost. The projection display apparatus includes the polarization beam splitter that has a first splitting surface for transmitting or reflecting a red light and a second splitting surface for transmitting or reflecting a green light and a blue light. A polarization state converter that is provided in the polarization beam splitter converts the polarization states of the green and blue lights and applies the converted green and blue lights to the polarization beam splitter.

Abstract: Illumination system in a liquid crystal projector for improving an optical efficiency of a fly eye lens, including a light source, a first fly eye lens having first lens cells each with a first center point, and second lens cells each with a second center point disposed in outer parts of the first lens cells, for receiving beams of lights from the light source in correspondence to the first center points of the first lens cells and the second center points of the second lens cells, respectively, and a second fly eye lens having a plurality of lens cells for refracting the beams from the first fly eye lens into parallel beams.