Abstract: An optical imaging apparatus includes an optical probe and an apparatus main body which controls and drives the optical probe via a connecting cable. The optical probe includes a low-coherence light source, a half mirror (light separating means), an XY reflecting mirror scan (horizontal scanning means), an objective optical system, a reflecting mirror, a modulating mirror (reference light reflecting means), and a photo detector (optical detecting means). In the optical probe, the modulating mirror and the objective optical system, as optical path length interlockingly adjusting means, are integrally arranged to an optical path length interlockingly adjusting base, together with a reflecting-side lens. The optical probe has an advancing and regressing driving unit which advances and regresses the optical path length interlockingly adjusting base in the optical axis direction (Z direction).

Abstract: An image display apparatus including a liquid crystal display panel (LCD) constituting an image display plane composed of a plurality of pixels arranged with a pixel pitch, a LCD driver circuit which receives an input image signal S1 and displays an image on a substantially whole image display plane of the LCD as well as a part of the image on a selected region C of the image display plane by selectively shifting image display positions of the image with respect to inherent positions on said image display plane in a given direction by an integer multiple or an inverse of an integer multiple of the pixel pitch of the LCD, and a pixel shift driver circuit which effectively and selectively shifts, in synchronism with the operation of said LCD driver circuit, said image display plane in a direction opposite to said given direction in which said image display position shifting is carried out.

Abstract: A stereoscopic image display apparatus having right and left display elements for displaying inputted stereoscopic image signals, right and left displaying optical systems for leading images displayed on the right and left image elements, a setting information element for outputting setting information signals on stereoscopic image display, based on the stereoscopic vision information signals about the inputted imaging distance in synchronization with the stereoscopic image signals, and a control element for controlling image position displayed on the right and left image display elements to at least optical axes of the right and left display optical systems, based on the setting information signals.

Abstract: An image display apparatus for use in head-mounted image display apparatus is disclosed. The apparatus comprises an image display element having a plurality of pixels arrayed in matrix, for displaying images by scanning these pixels with image signals; a pixel shifting means provided so as to divide these image display elements into a plurality of regions in a direction orthogonal to the scanning direction of the image signal, for selectively shifting viewing positions of the displayed images in respective regions; and a control means for controlling shifting operation at the viewing positions of the displayed images in corresponding regions of the pixel shifting means, in synchronism with the scanning of the image display elements.

Abstract: An optical angle detection apparatus includes a light source section, a sensor section disposed separately from the light source section through a space, a timing controller, and a calculation processing section. The light source section includes a plurality of LEDs and a plurality of first polarizing plates whose polarizing directions differ from each other by 45.degree. in correspondence with the LEDs. The sensor section includes a lens and a two-dimensional PSD. The timing controller sequentially and periodically turns on the plurality of LEDs.

Abstract: In a method of manufacturing a multilayer printed wiring board including an internal wiring circuit formed on a board, an insulating resin layer formed on the internal wiring circuit, a blind hole formed in the insulating resin layer and communicating with the internal wiring circuit, and a conductive portion formed on an inner wall of the blind hole and connected to the internal wiring circuit, the blind hole is formed by using a short-pulse CO.sub.2 laser.

Abstract: An image display apparatus designed so that the observer can view the image of an image display device without the need of manually adjusting the positional relationship between the observer's eyeball and a bundle of rays from the image display device which is to be projected into the eyeball. A positional relationship detecting section (46) observes the pupil of an observer's eyeball (44) and its vicinities, and detects where a bundle of rays from an LCD (42) is being projected. If it is detected that the ray bundle is not coincident with the pupil, motors (52a and 52b) are driven to move a first support (50a) and a second support (50b), which support the LCD (42), a backlight (43), and an ocular lens (45), so that the ray bundle passes through the pupil.

Abstract: A liquid crystal display apparatus designed so that the viewing angle dependence is minimized without causing the displayed image to become unsharp. The liquid crystal display apparatus has a display surface (16) for displaying an image by a plurality of pixels, and a backlight (11) disposed at a side of the apparatus which is reverse to the display surface (16) to allow an approximately parallel light beam, which is approximately normal to the display surface (16), to enter each pixel of the display surface. A microlens array (20) is disposed at the viewing side of the display surface (16), and a diffusing element (21) is disposed in the vicinity of a surface conjugate with the display surface (16) which is formed by the microlens array (20).

Abstract: In an image display apparatus of a head-mounted type including right-eye image display LCD for displaying a right-eye image, left-eye image display LCD for displaying a left-eye image, right-eye optical system for projecting the right-eye image onto a right-eye of a user, left-eye optical system for projecting the left-eye image onto a left-eye of the user, a polarity of each of the image signals supplied to the right-eye and left-eye image display LCDs is reversed such that each of pixels of these LCDs is driven in an alternating current mode so that the fluctuation in the intensity of the displayed images and the deterioration of the LCDs can be mitigated.

Abstract: A display apparatus, which can be mounted on the head portion of a man, includes a two-dimensional display unit for displaying an image. A projection optical system projects the image displayed on the two-dimensional display unit onto the retina of the eyeball of a user. A shutter is arranged in front of the eyeball of the user. A detector detects at least a forward inclination of motions of the head portion of the user. A control unit controls the shutter in accordance with the output from the detector to switch the shutter between a light transmission state and a light shielding state. A housing incorporates and holds the two-dimensional display unit, the projection optical system, the shutter, and the detector to be mountable on the head portion of the user.

Abstract: An image display device of eye projection type for use in a head-mounted display is disclosed. The image display device comprises an image display means for displaying a video image, and a projection optical system for projecting an image displayed on the image display means onto eyes of a viewer; said image display means including a plurality of liquid crystal display elements juxtaposed on the same optical axis as an optical axis of the projection optical system and an illuminating means arranged behind the plural liquid crystal elements and for generating substantially collimated luminous flux.

Abstract: An adhesive comprising (a) solid epoxy resin having a molecular weight of 5000 or more, (b) a polyfunctional epoxy resin having at least three epoxy groups, (c) an intramolecular epoxy modified polybutadiene having at least three epoxy groups, (d) a cationic photoinitiator, and (e) a tin compound in special weight ratios, is effective for producing multiple wire wiring boards having good heat resistance, solvent resistance wherein the adhesive layer has no voids and prevents shift of insulated encapsulated wires.

Abstract: A head-mounted see-through display which enables an outside image and an electronic image to be selectively observed by making a liquid crystal shutter transparent or opaque. To eliminate the problem that during the observation of the electronic image the outside image is undesirably seen through the peripheral region of the electronic image, display light from a two-dimensional display device (11) is first transmitted by a half-mirror (12), and the transmitted light is reflected by a concave mirror (13). Then, the reflected light is reflected by the half-mirror (12) so as to be led to the observer's eye as an enlarged image. To prevent the outside light from entering the eye through the half-mirror (12) during the observation of the electronic image, a negative or positive type TN or STN liquid crystal shutter (10) is disposed in front of the half-mirror (12).

Abstract: An adhesive comprising (a) solid epoxy resin having a molecular weight of 5000 or more, (b) a polyfunctional epoxy resin having at least three epoxy groups, (c) an intramolecular epoxy modified polybutadiene having at least three epoxy groups, (d) a cationic photoinitiator, and (e) a tin compound in special weight ratios, is effective for producing multiple wire wiring boards having good heat resistance, solvent resistance wherein the adhesive layer has no voids and prevents shift of insulated encapsulated wires.

Abstract: A head-mounted image display apparatus which is capable of selectively displaying images of normal and wide sizes efficiently by utilizing approximately all the pixels of a display device without the need of removing an optical system and which provides a bright image at high resolution and is easy to handle. The head-mounted image display apparatus has an image display device (2) for displaying an image, and a projection optical system for projecting the image displayed on the image display device (2) onto an observer's eye. The projection optical system includes an anamorphic optical system which is composed of an anamorphic lens (3) and a cylindrical lens (4), for example. The anamorphic optical system is rotatable about the optical axis. Accordingly, it is possible to selectively observe two images of the normal and wide sizes by rotating the anamorphic optical system about the optical axis through 90.degree. in either direction.

Abstract: An adhesive comprising (a) solid epoxy resin having a molecular weight of 5000 or more, (b) a polyfunctional epoxy resin having at least three epoxy groups, (c) an intramolecular epoxy-modified polybutadiene having at least three epoxy groups, (d) a cationic photoinitiator, and (e) a tin compound in special weight ratios, is effective for producing multiple-wire wiring boards having good heat resistance, solvent resistance and wherein the adhesive layer has no voids and prevents shift of insulated encapsulated wires.

Abstract: A coaxial conductor interconnection wiring board characterized by having at least one inner wall metallized conductive hole for connecting a conductive shield of coaxial conductor to a ground layer, or having connection metal layers for connecting ground layers or connecting the conductive shield to a ground layer, and an inner wall metallized conductive hole for connecting a central signal conductor of coaxial conductor to other circuits, is excellent in preventing crosstalk noise and shielding effect.

Abstract: A coaxial conductor interconnection wiring board includes at least one coaxial conductor and at least one conductive hole having an inner wall covered with a metal film connected to a central signal conductor of the coaxial conductor. The conductive shield of the coaxial conductor is connected to the ground layer by connection metal layers. A conductor insulating layer surrounds the metallized conductor hole and the connection metal layers surround a part of the additional conductor insulating layer. Thus, the conductive hole, insulating layer, and connection metal layers function as a coaxial conductor.

Abstract: By using a composite film comprising an additive layer and an insulating layer containing an epoxy resin and a synthetic rubber as major components, printed wiring boards having a higher circuit density and higher reliability can be produced simply and effectively.

Abstract: An adhesive composition for producing printed wiring boards comprising (A) acrylonitrile-butadiene rubber having carboxyl groups in the molecule and containing 20 ppm or less of metal ionic impurities, (B) an alkyl phenol resin, (C) an epoxy resin, (D) a catalyst for electroless plating, and (E) a coupling agent having an ethylene or vinyl group, is useful in a so-called additive process.