Abstract: An interference projection system for use with lithography using quasi-coherent sources, which has a non-diffractive beam splitting module and a non-diffractive module to cause interference of two or more beams, the modules combining to form interfering beams having the same orientation on a target surface. Two etalons are used to split a beam, to form two beams of the same orientation, strength and polarization. One or more pairs of mirrors cause the beam to interfere.

Abstract: A transparent document securing device, using in a flatbed scanner, includes a securing frame. The securing frame comprises at least a securing cell, wherein the securing cell further includes a concave, a cover and a clip mechanism. The concave includes at least a first opening and an open slot. The cover includes at least a second opening. The securing device employs the cover to mount a transparent document in a concave. A user is therefore be able to place the securing device along with the transparent document in the document glass of a scanning system. By a predetermined mode, the scanning system is able to directly scan the transparent document; no need to preview the scanned image to adjust the scanning area. Thus, the time for scanning is saved. Further the fixed depth of the concave is utilized to proved a precise focus of the scanning system. The quality of the scanned image is therefore improved.

Abstract: An image display apparatus includes: a color separation optical system having a color separation optical member for reflecting a color light component in a specific wavelength range of the converging light and transmitting color light components in the other wavelength ranges. An optical axis of light incident on the color separation optical member forms an angle smaller than 45 degrees with a normal to a light incident surface of the color separation optical member.

Abstract: A compact real-image projection apparatus is used for a portable device (140). An optical projector (110) emits light that is capable of forming an image. A collapsible screen (120) has a collapsed surface area no larger than substantially the surface area of a side of the portable device and an expanded surface area capable of receiving the light emitted from the optical projector (110). A retractable connecting member (150) is coupled between the screen (120) and the optical projector (110) and has at least a stowed position and an extended position. The extended position is configured to hold the screen (120) and the optical projector (110) relative to one another such that the light emitted from the optical projector forms a real image on the screen.

Abstract: A rear screen projection system uses a single monochrome liquid crystal display (LCD) panel for displaying full color images. In one embodiment, an apparatus for projecting an image includes an illumination source generating polarized light beams in three different primary colors, a monochrome liquid crystal display panel including a two-dimensional array of addressable pixels, the array of addressable pixels is divided into multiple image areas, and a projection lens assembly for aligning and projecting the images generated by the multiple image areas of the liquid crystal display panel to form a full color image. In one embodiment, the illumination source includes a light source emitting randomly polarized white light, a polarizing element coupled to receive the randomly polarized white light and generate a polarized white light beam, and color separating elements for separating the polarized white light beam into the polarized light beams in three different primary colors.

Abstract: A presentation imaging system used for imaging machine readable information on an object is provided. The system includes a proximity sensor and an imaging device coupled to a processor. The sensor senses the presence of an object within a field of view. A light source projects a structured beam at a first intensity to define an imaging area generally co-extensive with the field of view. Upon detection of the object, the processor signals the light source to project the beam at a second, higher intensity for imaging.

Abstract: In a projection display provided with an optical unit, a power source unit, an external case to store the optical unit and the power source unit, a suction opening (75) is formed in one end part of the power source unit, a discharge opening (77) is formed in the other end part, and the suction opening (75) is arranged in the vicinity of an air inlet in the external case. Because the suction opening (75) and the discharge opening (77) are provided, the inside of the power source unit can be independently and efficiently cooled, and the optical unit and the power source unit can be arranged closely to each other.

Abstract: A rear-projection display system comprises a light engine, a beam-splitter that receives light from the light engine, a projection lens that receives an image from the beam-splitter, a rear-projection screen, and a mirror that receives the image from the projection lens and reflects it onto the screen. The beam-splitter has a reflecting element, receives an image, and reflects the image off the reflecting element at an angle of incidence that is substantially unequal to 45 degrees.

Abstract: A projecting display system includes a light source (101) which produces light which is spatially modulated by a number of spatial light modulators (105, 107). A splitting means (103) is provided in the light path between the light source (101) and the spatial light modulators (105 and 107) such that the overall luminous flux produceable by the system is not determined by the maximum luminous flux which each spatial light modulators (105, 107) can accommodate.

Abstract: A compact, lightweight, low cost image display device with high image quality and improved brightness are attained by a combination of a color separating means and color separating/combining means and color combinations means and two reflecting means and polarizing plate to change the polarization direction of the light and a polarized beam splitter on the optical axis of reflective liquid crystal display element.

Abstract: The present invention provides for an electronic image projection device having integrated computer capabilities built into the projector such that the data producing the projected image can be produced and retrieved without a separate, external, computing device. Alternatively, the present invention provides an electronic image projection device having the ability to removably mount a computing device (e.g. a laptop computer) in a manner that does not require numerous external cable connections or technical expertise.

Abstract: Provision of a projector used for a planetarium which is capable of reducing electrical power consumption and size. The projector comprises a light source 1 constituted by an array of a plurality of light emitting diodes L for emitting illumination light. The emitted illumination light passes through a condenser lens 2 to impinge onto a original projection plate 3 provided with a light-permeable pattern P, and then a transmitted image is projected through a projection lens onto a dome screen.

Abstract: A projection type image display apparatus makes illumination light from a light source section incident on a rectangular reflection type liquid crystal display device by way of a polarization beam splitter, optically modulates the illumination light in the reflection type liquid crystal display device, and projects thus modulated light through a projection lens by way of the polarization beam splitter. A plane including the optical axis of illumination light incident on the polarization beam splitter and the optical axis of illumination light emitted from the polarization beam splitter toward the projection lens is substantially parallel to a direction in which a shorter side of the reflection type liquid crystal display device extends.

Abstract: A method and system for projecting an image. An image projection system may include a sensor configured to detect the presence of an observer within a proximity of a medium, e.g., screen, window. In response to the sensor detecting the presence of an observer within a proximity of the medium, one or more portions of the medium may be switched from a transparent state to a substantially translucent state. At a substantially concurrent time as switching the one or more portions of the medium to a substantially translucent state, an image may be projected onto such portion(s). Hence, an image may be displayed in response to detecting an observer within the proximity of the medium.

Abstract: A method and apparatus for generating a display is provided. In the disclosed system, each color required by the display is generated by incoherently combining the beams of tens or hundreds of individual lasers. In order to achieve a full color display, three independent IBC systems are used to generate the required three colors (e.g., red, green and blue). The output from each IBC system is modulated and the three beams are combined to form a single, modulated output beam that is directed to a display scanner.

Abstract: A reflection type image forming optical system and a projector are compact with wide view angle, in expensive and having uniform illumination intensity. The reflection type image forming optical system includes a first reflection mirror having a rotation symmetric aspheric shape concave reflection surface directed to an image forming surface arranged an image forming element thereon, a second reflection mirror having a rotation symmetric aspheric shape convex reflection surface directed toward a flux of light from the first reflection mirror, a third reflection mirror having a rotation symmetric aspheric shape concave reflection surface directed toward a flux of light from the second reflection mirror and a fourth reflection mirror having a rotation symmetric aspheric shape convex reflection surface directed toward a flux of light from the third reflection mirror. The first, second, third and fourth reflection mirrors form a telecentric optical system.

Abstract: A real image projection system comprising two or more optical surfaces of revolution, with at least one comprising an aspheric surface of revolution. The aspheric surface of revolution is of a design to reduce natural aberrations inherent in imaging using surface of revolutions of the conic family of curves.

Abstract: An analyzing-synthesizing optical system has the structure in which for each of the three primary colors of R, G, and B, there are provided a light valve for modulating incident light and a polarization beam splitter for guiding specific polarized light to this light valve and extracting only modulated light coming from the light valve to output it, wherein these light valves and polarization beam splitters are fixed as integrated with a synthesizing optical system comprising a cross dichroic prism and wherein optical path lengths of optical paths of the respective colors are adjusted to be almost equal to each other. A projection image display apparatus comprises the analyzing-synthesizing optical unit.

Abstract: A merchandise display case and system are provided, comprising a frame housing an image projector, a mirror and a rear-display panel on which the merchandise is supported and displayed, to provide a view that is a combination of the merchandise and an image emanating from below or behind the merchandise. The emanating image and the selected placement and positioning of the merchandise on the emanating image can be coordinated physically and thematically to create a unique visual experience. The system is interactive, operative in default and interactive modes and includes various video image sources which may be selected by a customer who provides user input signals to a microcontroller subsystem which controls the plurality of video image sources and other components to be responsive to the customer.

Abstract: The present invention provides for a compact integrated front projection display system. The system comprises a frame having first and second portions and a foldable arm having first and second ends. The second end of the arm is connected to the first portion of the frame. The arm is moveable between a storage position and a projection position. The system also includes a retractable projection screen disposed on the second portion of the frame and a projection head mounted on the first end of the moveable arm.