Abstract: Example implementations relate to one or more than one sealing assembly to seal an aperture, coupling two chambers, the aperture being arranged to accommodate a printhead carriage; the assembly comprising: at least a pair of curtains capable of being disposed in a sealing relationship with the aperture; the at least a pair of curtains being capable of being positioned one either side of the printhead carriage, and spooling and unspooling mechanisms comprising a pair of spools onto which the pair of curtains can be spooled and unspooled in response to movement of the printhead carriage to maintain the sealing relationship with the aperture.

Abstract: A transparent display system and a display method thereof are disclosed. The transparent display system includes a transparent display panel, a projecting apparatus and a control device. The transparent display panel includes a viewing side and a rear side opposite to the viewing side and is configured to display image information on the viewing side; the projecting apparatus is configured to project image information on the rear side of the transparent display panel; and the control device is configured to control synchronization between a display operation of the transparent display panel and a projection display operation of the projecting apparatus.

Abstract: An image display apparatus and method constantly maintain a desired image formation state on a retina. The apparatus includes a laser light source for emitting laser light, a focus position adjustment section for adjusting a focus position of the laser light, and a scanning section for scanning an area by using the adjusted laser light as scanning light. The apparatus also includes a light deflection section for leading the scanning light to a user's cornea, a light detection section having an optically conjugate relation with the cornea surface through the light deflection section, for detecting a part the scanning light reflected on the cornea surface and generating a detection signal, and a control section. The control section controls the focus position adjustment section to adjust the focus position of the laser light such that the detection signal agrees with an initial setting signal.

Abstract: A projection-type display apparatus includes an illumination optical system (1) including a light source, a reflection-type light valve (2) having an image forming area on a to-be-illuminated surface illuminated by the illumination optical system (1), and a projection optical system (3) that projects an image formed on the image forming area of the reflection-type light valve (2). The projection optical system (1) is shiftable in a direction approximately perpendicular to a projection optical axis. An F-number of the projection optical system (3) is smaller than an F-number of the illumination optical system (1). Between the projection optical system (3) and the reflection-type light valve (2), an opening defining member (12) that defines an incident side opening of the projection optical system (3) is provided, which is not moved by the shifting of the projection optical system (3).

Abstract: The present invention is embodied in a system and method for projecting a liquid crystal display (LCD) of a personal data assistant or mobile telephone. In general, the present invention enables users of PDAs and/or mobile telephones to enlarge the view of textual and graphical images. Namely, the present invention is embodied in a system and method that projects the LCD display screen of LCD displaying devices, such as PDAs and/or mobile telephones, onto a larger surface, for example, the back of car or airplane seat. This allows Internet information, including World Wide Web (WWW) pages or online demos with text and images to be enlarged. Also, enlargement of text and images by the projection arrangement of the present invention allows easier reading for people that have difficulty seeing small text/numerical characters and images.

Abstract: The projector has an essentially afocal projection system, in particular for the reproduction of three-dimensional images. This system has a system of convex lenses (1) on the side of the object and a Fresnel lens (2) on the side of the image. The lenses are larger than the transverse dimension of the object to be reproduced. By providing a double reflection (3, 4), this projection system is able to generate, in addition to the reproduction of two-dimensional images, a three-dimensional image of a real, three-dimensional object, "positioned in space" and whose sides are correctly aligned for the benefit of an observer. Preferably, a plane mirror (3) is used for this purpose as well as a beam splitter (4) that is inclined by about 45.degree. with respect to the main axis (5) of the system of convex lenses (1).

Abstract: A reflecting illumination type projecting device includes a projecting lens having an optical axis intersecting an object to be tested, a light source portion for illuminating the object through the projecting lens, a screen onto which an image of the object is projected by light reflected on the object through the projecting lens, and an optical path separating element disposed in the vicinity of an exit pupil, the element being formed with a total reflecting mirror portion for reflecting either the illuminating light or the reflected light and with a transmitting portion for transmitting the remaining light, thereby to make the illuminating light incident to the projecting lens and to guide the reflected light toward the screen.

Abstract: A reflecting illumination type projecting device includes a projecting lens having an optical axis intersecting an object to be tested, a light source portion for illuminating the object through the projecting lens, a screen onto which an image of the object is projected by light reflected on the object through the projecting lens, and an optical path separating element disposed in the vicinity of an exit pupil, the element being formed with a total reflecting mirror portion for reflecting either the illuminating light or the reflected light and with a transmitting portion for transmitting the remaining light, thereby to make the illuminating light incident to the projecting lens and to guide the reflected light toward the screen.

Abstract: A projecting apparatus having a first projecting system for projecting an object to be projected to form an intermediate image, and a second projecting system for projecting the intermediate image formed by the first projecting system onto a screen. The first projecting system is adapted to distort the image of the object, and the second projecting system is adapted to correct the distorted image to project an enlarged image analogous to the object onto the screen.

Abstract: An opaque projector includes a light source, a stage through which the light radiating from the light source passes and on which an object is placed, a projection mirror for reflecting light reflected by the object, and a projector lens for gathering the light reflected by the projection mirror to form an image of the object on an image projecting surface located outside of the projector. A reflection mirror for reflecting the light from the light source to illuminate the object is provided on each of the two sides of the projection mirror. The light source is disposed in front of the projeciton mirror and on the inner sides of the reflection mirrors.

Abstract: A projection system comprising from the image end a screen, a lens in which a core portion including the lens axis accomplishes a convergence function and in which a peripheral portion including a lens edge thereof accomplishes the divergence function, a convex lens element, a concave lens element and a CRT having a face glass whose inner surface is coated with a phosphor and is so curved to form a fourth lens element with a curvature center within a core portion including the lens axis is disposed on the screen side of the projection system, the curvature radius of each part of the core portion of the fourth lens increasing thereof in accordance with increments of the semi-aperture distance of each part from the lens axis.

Abstract: In the particular embodiments described in the specification, a transparency projector includes a transparent sheet having one surface formed with a field of corner reflectors in which corresponding surfaces of each of the corner reflectors are deviated from orthogonality. A transparency adjacent to the retrodirectional reflector sheet is illuminated by a light source adjacent to a projection lens and light reflected from the retrodirectional reflector sheet back through the transparency forms images of the light source at positions on each side of the light source which are within the aperture of the projection lens. A transparency having three-dimensional ink spots which form dioptric lenticules can be projected by the transparency projection system without degradation of color.

Abstract: An optical viewing device enabling visually handicapped persons to read ordinary textual material in full color, the device comprising a stage for holding the material and an X-Y positioner used to move the textual material on the stage; lights beneath the stage for illuminating the material; an objective to form a real image; a prism or mirrors for reflecting the imaging rays from the objective through 90 degrees and for reinverting the rays; two mirrors to reflect the rays to an approximately vertical, directional, controlled brightness rear projection screen, so that the imaging rays successively passing from the objective to the reflecting/reinverting prism or mirrors and the two mirrors form a real, erect enlarged image on the screen.

Abstract: An epi-illumination type projection device for forming a projected image of an object comprises a body having a screen, first and second projection lens means alternately mounted at a predetermined location on the body to form different projected images on the screen, and an illuminating system having a light source and a main condenser lens provided in the body to supply an illuminating light to the object through the projection lens means when each of the projection lens means is positioned at said predetermined location. Each of the first and second projection lens means has an engaging surface engaged with the body at said predetermined location, a beam splitter disposed obliquely with respect to the optical axis of the projection lens means, a convergent lens group provided on that side of the beam splitter which is adjacent to the object, and an auxiliary condenser lens provided laterally of the beam splitter.