Abstract: An arm mechanism includes a first arm, which is hollow, a second arm, and a connection portion for mutually rotatably connecting the first arm and the second arm. A connection portion 15 includes a rotary shaft extending in a direction perpendicular to an axial direction of a first arm 11 and a second arm 12, a friction portion for generating a frictional force against rotation of the rotary shaft, and a biasing member which is housed in the first arm, has an end portion facing away from the rotary shaft and connected to the first arm, has an end portion facing the rotary shaft and connected to the second arm via a connection member, and generates a contraction force which is increased with an increase in angle between an axis of the second arm and an axis of the first arm by rotation of the rotary shaft.

Abstract: An arm mechanism includes a first arm, which is hollow, a second arm, and a connection portion for mutually rotatably connecting the first arm and the second arm. A connection portion 15 includes a rotary shaft extending in a direction perpendicular to an axial direction of a first arm 11 and a second arm 12, a friction portion for generating a frictional force against rotation of the rotary shaft, and a biasing member which is housed in the first arm, has an end portion facing away from the rotary shaft and connected to the first arm, has an end portion facing the rotary shaft and connected to the second arm via a connection member, and generates a contraction force which is increased with an increase in angle between an axis of the second arm and an axis of the first arm by rotation of the rotary shaft.

Abstract: There is provided a shutter device which is used in a camera having two image-capturing optical systems and enables a significant reduction in the number of components. Two shutter openings are formed in a shutter base. Shutter blades and a diaphragm plate are provided forward of the shutter base. When a cam pin is reciprocally moved from the position of a start point to an intermediate position or from the intermediate position to the position of an end point, the shutter blades open and close a shutter one or more times. When the cam pin is located at any position along the way from the start position to the intermediate position, the diaphragm plate is moved to a location where small diaphragm openings correspond to the shutter openings. When the cam pin is located at any position along the way from the intermediate position to the position of the endpoint, the diaphragm plate is moved to a location where open diaphragm openings correspond to the shutter openings.

Abstract: The number of drive motors in a digital camera having multiple imaging optical systems is curtailed. The digital camera has a first imaging optical system and a second imaging optical system. The first imaging optical system has a zoom lens group and a focus lens. The second imaging optical system has another zoom lens group and another focus lens. The focus lens groups are actuated commonly by a focusing drive motor. The former focus lens group is moved by a gear G3 and an outer peripheral gear of a lens guide ring. The latter focus lens group is moved by a feed screw.

Abstract: There is provided a shutter device which is used in a camera having two image-capturing optical systems and enables a significant reduction in the number of components. Two shutter openings are formed in a shutter base. Shutter blades and a diaphragm plate are provided forward of the shutter base. When a cam pin is reciprocally moved from the position of a start point to an intermediate position or from the intermediate position to the position of an end point, the shutter blades open and close a shutter one or more times. When the cam pin is located at any position along the way from the start position to the intermediate position, the diaphragm plate is moved to a location where small diaphragm openings correspond to the shutter openings. When the cam pin is located at any position along the way from the intermediate position to the position of the endpoint, the diaphragm plate is moved to a location where open diaphragm openings correspond to the shutter openings.

Abstract: The number of drive motors in a digital camera having multiple imaging optical systems is curtailed. The digital camera has a first imaging optical system and a second imaging optical system. The first imaging optical system has a zoom lens group and a focus lens. The second imaging optical system has another zoom lens group and another focus lens. The focus lens groups are actuated commonly by a focusing drive motor. The former focus lens group is moved by a gear G3 and an outer peripheral gear of a lens guide ring. The latter focus lens group is moved by a feed screw.

Abstract: A method for making a printed wiring board reduced in weight by reducing the size and the thickness of a substrate in its entirety. The printed wiring board includes a rigid substrate 2, comprised of a core material 11 at least one side of which carries a land 23, and flexible substrates 3, 4, 5, and 6 comprised of core materials 33, 36 on at least one surface of which a bump 32 for electrical connection to the land 38 is formed protuberantly. The rigid substrate 2 and the flexible substrates 3 to 6 are molded as one with each other, with the interposition of an adhesive in-between, so that the land and the bump face each other.

Abstract: A binocular device includes two observation optical systems, an additional optical system, and a viewfinder for the additional optical system. An image-capturing unit is movable between a first image-plane position of one of the observation optical systems and an image-plane position of the additional optical system by shifting a lens-switching lever. A switch of the image-capturing unit can be turned on and off by a camera switch lever. For an observation mode using the observation optical system, the image-capturing unit is set at the image-plane position of the additional optical system. For an image-capturing mode using the observation optical system, the image-capturing unit is set at the first image-plane position such that the switch of the image-capturing unit is turned on. For image-capturing using the additional optical system, the image-capturing unit is set at the image-plane position of the additional optical system such that the switch of the image-capturing unit is turned on.

Abstract: A binocular device includes two observation optical systems, an additional optical system, and a viewfinder for the additional optical system. An image-capturing unit is movable between a first image-plane position of one of the observation optical systems and an image-plane position of the additional optical system by shifting a lens-switching lever. A switch of the image-capturing unit can be turned on and off by a camera switch lever. For an observation mode using the observation optical system, the image-capturing unit is set at the image-plane position of the additional optical system. For an image-capturing mode using the observation optical system, the image-capturing unit is set at the first image-plane position such that the switch of the image-capturing unit is turned on. For image-capturing using the additional optical system, the image-capturing unit is set at the image-plane position of the additional optical system such that the switch of the image-capturing unit is turned on.

Abstract: A multi-layer printed wiring board is manufactured by forming a wiring pattern and a component mounting portion on a first substrate. An insulating spacer, formed with a first opening, is stacked over the first substrate with the first opening in registration with the component mounting portion. A second substrate is stacked over the spacer and the resulting assembly is bonded together. A second opening, continuing to the first opening, is formed in the second substrate, exposing the component mounting portion to the outside. An LSI is mounted on the component mounting portion, the first and second openings are filled with a synthetic resin mass, and then a third substrate is stacked over the second substrate to enclose the openings.

Abstract: A printed wiring board reduced in weight by reducing the size and the thickness of a substrate in its entirety. The printed wiring board includes a rigid substrate 2, comprised of a core material 11 at least one side of which carries a land 23, and flexible substrates 3, 4, 5 and 6 comprised of core materials 33, 36 on at least one surface of which a bump 32 for electrical connection to the land 38 is formed protuberantly. The rigid substrate 2 and the flexible substrates 3 to 6 are molded as one with each other, with the interposition of an adhesive in-between, so that the land and the bump face each other.

Abstract: A printed wiring board reduced in weight by reducing the size and the thickness of a substrate in its entirety. The printed wiring board includes a rigid substrate 2, comprised of a core material 11 at least one side of which carries a land 23, and flexible substrates 3, 4, 5 and 6 comprised of core materials 33, 36 on at least one surface of which a bump 32 for electrical connection to the land 38 is formed protuberantly. The rigid substrate 2 and the flexible substrates 3 to 6 are molded as one with each other, with the interposition of an adhesive in-between, so that the land and the bump face each other.

Abstract: A printed wiring board reduced in weight by reducing the size and the thickness of a substrate in its entirety. The printed wiring board includes a rigid substrate 2, comprised of a core material 11 at least one side of which carries a land 23, and flexible substrates 3, 4, 5 and 6 comprised of core materials 33, 36 on at least one surface of which a bump 32 for electrical connection to the land 38 is formed protuberantly. The rigid substrate 2 and the flexible substrates 3 to 6 are molded as one with each other, with the interposition of an adhesive in-between, so that the land and the bump face each other.

Abstract: A printed wiring board, in which an LSI is enclosed, is to be manufactured efficiently. To this end, a wiring pattern 17 is formed on a first substrate 11, and a component mounting portion 18 is formed in the first substrate 11. An insulating spacer 25 then is formed, in which there is formed a first opening 29 in registration with the component mounting portion 18 of the first substrate 11 for accommodating an LSI 39. A second substrate 19 is stacked on the spacer 25. The component units, thus stacked, are bonded together. A second opening 36 communicating with and continuing to the first opening 29 is formed in the second substrate 19 to expose the component mounting portion 18 to outside. The LSI 39 is mounted on the component mounting portion 18, exposed to outside, and synthetic resin 40 is charged in the first and second openings 29, 36. A third substrate 41 then is mounted for stopping the second opening 36.

Abstract: A photopolymerizable composition suitable as a solder resist and capable of forming a resist film having characteristics in no way inferior to those of the conventional heat-curable type or organic solvent developed type solder resist, with the use of water or a dilute aqueous solution which is completely innocuous and higher in safety than the aqueous alkaline solution, and a method for producing a cured coated film pattern using the photopolymerizable composition.

Abstract: A camera viewfinder optical system is interlockingly connected with a rotatable cam ring used to zoom a camera lens barrel system unit forwardly in an optical axial direction thus eliminating a bulky cam portion on the outer surface of the cam ring so a more compact zoom lens barrel unit is possible.

Abstract: The viewfinder of a camera include one or more lens elements that zoom in coordination with the camera's taking lens, and normal/panoramic masking plates that pivot about horizontal axis in coordination, with moving masking plates for the camera's back frame opening or with signaling elements. Since the panoramic masking plates are not in the image plane, the aperture in a provided aperture plate is a horizontal slit opening, which provides a great depth of focus, to maintain image sharpness, when the masking plates are in the panoramic position.

Abstract: A printed circuit board having a through-hole in a land is disclosed. A solder resist of a photo-curable solder resist is formed on the substrate surface of the printed circuit board and the through-hole is stopped with the same photo-curable solder resist as the solder resist layer. If a land on which a chip component is mounted co-exists with a land on which a discrete component is mounted, only the through-hole in the land on which the chip component is mounted is selectively stopped with the photo-curable solder resist. The solder resist layer and the photo-curable solder resist stopping the through-hole are formed by selective light exposure from both the front and reverse surfaces of the substrate.

Abstract: A lens barrel unit for a zoom lens camera which is more compact in the axial optical direction in the retracted state because the lens group moving means and linear movement guiding means are juxtaposed along the optical axis. The lens barrel unit also has a reduced outer diameter due to a reduction in the need for a separate outer helicoid portion of the moving means and elimination of guiding grooves on the inside of the fixed barrel unit.

Abstract: An apparatus for preventing the driver of a vehicle from being blinded by the glare of light by selectively moving a light-shielding plate in two-dimensions along an inside surface of the windshield to provide a light-shielding region. The light-shielding plate is controllably moved by hand or by motor. More preferably, the apparatus further includes a microcomputer for obtaining the crossing point between light coming into the eye of the driver and the windshield plate, and a mechanism or circuit for moving the light-shielding plate to a shielding position defined by the microcomputer.