Abstract: The present invention relates to a TFT panel type fingerprint recognition sensor comprising: a total reflection unit for totally reflecting light emitted from a light source; a photodiode for detecting light reflected through the total reflection unit; and a TFT panel for processing voltage output from the photodiode so as to perform imaging.

Abstract: The present invention relates to a TFT panel type fingerprint recognition sensor comprising: a total reflection unit for totally reflecting light emitted from a light source; a photodiode for detecting light reflected through the total reflection unit; and a TFT panel for processing voltage output from the photodiode so as to perform imaging.

Abstract: Disclosed is an image intensifier camera capable of rotating an image imaged therein. An image intensifier camera in accordance with the present invention includes an image inverse prism provided between a front lens group and an aperture stop in a fluoroscopic image imaging optical system, and an image pickup device in the intensifier camera of the present invention contains an electric circuit for converting a mirror image back to an original image therein. In accordance with the present invention, the image imaged in the image pickup device may be rotated by a rotatable image inverse prism, so that the image intensifier camera of the present invention has a simple structure, a small volume, high image resolution, and high stability of image quality.

Abstract: Disclosed is an image intensifier camera capable of rotating an image imaged therein. An image intensifier camera in accordance with the present invention includes an image inverse prism provided between a front lens group and an aperture stop in a fluoroscopic image imaging optical system, and an image pickup device in the intensifier camera of the present invention contains an electric circuit for converting a mirror image back to an original image therein. In accordance with the present invention, the image imaged in the image pickup device may be rotated by a rotatable image inverse prism, so that the image intensifier camera of the present invention has a simple structure, a small volume, high image resolution, and high stability of image quality.

Abstract: A projector with a detachable liquid crystal panel. A lamp emits a certain amount of focused source light rays. A reflector reflects the focused source rays of the lamp into uniform spread light rays. A planar reflector reflects the spread light rays of the reflector into planar light rays. A Fresnel lens focuses the planar light rays of the planar reflector. A detachable LCD panel section rotatingly transmits the incident focused light rays from the Fresnel lens in accordance with a picture data to be displayed. An image-forming optical system for forming images from the incident light rays incoming from the LCD panel section. A small LCD panel is detachably formed in an LCD projector. Thus, if the surrounding illumination is bright, pictures can be viewed by attaching the LCD panel to an LCD TV. If the pictures are to be watched through a large screen, the LCD panel is attached to the LCD projector so as to magnify the pictures.

Abstract: A system for compensating for color deviation in image light of an object obtained by an image capturing and reproducing apparatus, which comprises a color temperature measuring circuit for detecting the color temperature of the light rays around the object, a color coordinate operation circuit for processing the color data generated by the color temperature measuring circuit so as to obtain color coordinates, a control circuit for obtaining a color deviation compensation value, based on the color coordinates to produce a color deviation compensation signal, and a color compensation circuit for supplying color deviation compensated image light to the image capturing and reproducing apparatus responsive to the color deviation compensation signal.

Abstract: A projection optical system for a liquid crystal projector having a plurality of lenses and projecting an image from liquid crystal display devices onto a screen including a front lens portion having a meniscus lens, a first concave lens, a convex lens and a second concave lens sequentially arranged from the furthermost of an image plane. A rear lens portion is also provided having two plano-convex lenses positioned between the front lens portion and image plane (display screen), with the flat surfaces thereof facing the image plane. The projection optical system for a liquid crystal projector having a compact size and capable of projecting focused images on the screen by adjusting the distance between the front and rear lens portions.

Abstract: A single panel type liquid crystal display projector includes a flat LCD panel oriented perpendicularly to a first optical axis, lighting means having an illumination source surrounded by a parabolic reflecting mirror for irradiating parallel light onto a rear side of the flat LCD panel, and an optical lens system for focusing, wherein the optical lens system is provided with a retrofocusing optical lens system which is located between the lighting means and the flat LCD panel, a flat reflecting mirror installed so as to be inclined with respect to the first optical axis at a predetermined angle of inclination, spaced apart by a predetermined distance from the LCD panel along the first optical axis so as to reflect light traveling along the first optical axis onto a second optical axis, and a focusing lens system composed of multiple lens groups arranged on the second optical axis and spaced apart by a predetermined distance from the intersection of the flat reflecting mirror and the first optical axis.

Abstract: An overhead projector that irradiates light onto an object or a sheet of paper, focuses the light reflected therefrom with a focusing lens, isolates ultraviolet or infrared rays having a specific wavelength among the focused light via a filter, forms an image by irradiating the isolated light onto an image former, and projects the image onto a projection screen by irradiating visible light onto the image former whereby the image is enlarged and projected via a projection lens to thereby obtain a more clear image.