摘要:
A color image reading apparatus includes a multiple-line sensor in which a plurality of one-dimensional sensor arrays are arranged on a single substrate, a projection optical system for projecting a subject on the sensor, and a color separator disposed in an optical path between the projection optical system and the sensor, for color-separating light from the subject into a plurality of color beams. The color separator includes a volume hologram and an optical interference film.
摘要:
A photo-crosslinkable resin composition comprises (a) a polymer having an electron-donating group in a monomer unit, (b) a halogen compound, (c) an onium salt and (d) at least one sensitizer selected from the group consisting of coumarin derivatives, rhodanine derivatives, thioxanthene derivatives and unsaturated cyclopentanone compounds. The composition can be used as a hologram recording medium.
摘要:
A camera includes a motor, a first planetary gear which revolves on the basis of an output rotation of the motor, a second planetary gear which revolves on the basis of the output rotation of the motor, a first camera operating mechanism which engages with the first planetary gear by the revolution of the planetary gear caused by a rotation of the motor in a first direction, a second camera operating mechanism which engages with the second planetary gear by the revolution of the second planetary gear caused by the rotation of the motor in the first direction, and a selector for selectively preventing the revolution of either of the first and second planetary gears. The selector selectively permits the operation of either of the first and second camera operating mechanisms during the rotation of the motor in the first direction.
摘要:
An alarm signalling electronic timepiece including an alarm signalling circuit which generates alarm signal at a preset hour, and a sound circuit which generates signalling sound by the alarm signal. This timepiece includes a timer counter which can memorize and subtract preset time and which can supply the alarm signal to the sound circuit after the set time elapses from the start of down count from a a time start circuit which holds the time memorized in said timer counter until the alarm signal from the alarm signalling circuit changes and which starts counting in said timer counter when the alarm signal changes, and external switches which externally switch over to work or cancel said time start circuit, whereby plural and different alarm signalling hours can be set with more simplicity.
摘要:
A clock adjustment switch system for a clock having a display panel, such as an optoelectronic or liquid crystal display panel, and a transparent cover fit over the display panel. Transparent touch-switches for adjusting the timekeeping or other function of the clock are provided on the transparent cover and luminous indicator means are provided at corresponding positions on the display panel. The time switches are made operative and the luminous indicator means are lit only when the clock adjustment function has been made operative by another switch provided on the transparent cover.
摘要:
An immersion optical system that condenses light from a light source toward a first surface includes a lens having a concave lens surface closest to the first surface, a liquid being filled in a space between the concave lens surface and the first surface, wherein a conditional equation d>L/[2×tan {arcsin(NA/ni)}] is met, where d is a distance between a first point and a second point when the distance becomes maximum between the first point on the concave lens surface and the second point on the first surface in a direction substantially orthogonal to the first surface, L/2 is a maximum distance from the second point to an edge of an irradiation area of the light on a first surface, NA is a numerical aperture of the immersion optical system, and ni is a refractive index of the liquid.
摘要:
The present invention relates to a stereoscopic image displaying method and stereoscopic image displaying apparatus for interchangeably displaying a stereoscopic image and a two-dimensional image or for displaying a mixed stereoscopic image and two-dimensional image. In accordance with the present invention, light from a surface illuminant is passed through a mask substrate in which a mask pattern comprised of a plurality of apertures is formed. The light then is guided through a cylindrical lens array and a light directivity control element of polymer distributed liquid crystal having a stripe pattern, and thereafter the light irradiates a transmissive display device for displaying a stripe image having a parallax, or a two-dimensional, image. Control region stripes of the light directivity control element are brought into a non-scattering state when the stripe image is displayed on the display device. Control region stripes of the light directivity control element are brought into a scattering state when the two-dimensional image is displayed on the display device.
摘要:
The present invention relates to an image displaying apparatus comprising an image displaying device for radiating light to display an image, a first optical system for forming the image on a primary image plane, which has a magnification-changing portion for changing an image magnification of the image and a second optical system for guiding light from the primary image plane to the pupil of an observer in order to enable the observer to observe an enlarged, virtual image of the image formed on the primary image plane.
摘要:
A stereoscopic image display apparatus for causing an observer to observe a stereoscopic image, includes a light source for illuminating, with a surface illuminant, a mask substrate on which a mask pattern including aperture portions and shielding portions arranged in a checkerboard pattern is formed, a vertical cylindrical lens array including vertical cylindrical lenses each having a generatrix in a vertical direction, and a transmission type display device for displaying an image on scanning lines. Right stripe pixels and left stripe pixels are alternately arranged in a predetermined order to form one image, thereby displaying a horizontal stripe image on a display surface of the display device, and light beams emitted from the light source, to which directivity is given by the vertical cylindrical lens array, irradiate the horizontal stripe image. The light beams are separately condensed on at least two regions to make the observer to see the horizontal stripe image as a stereoscopic image, and a horizontal width of a pair of an aperture portion and a shielding portion arranged on the mask pattern in a horizontal direction is set to be not less than twice a horizontal pixel size of the display device.
摘要:
An optical information recording/reproducing apparatus is disclosed. In the apparatus, a light beam polarized in a predetermined direction is irradiated onto an opto-magnetic recording medium to which a pre-determined magnetic field is applied. The light beam from the recording medium is condensed by the optical device and the condenced light beam is detected by the two-division detector. The two-division detector has a division line extending in a direction perpendicular to tracks on the recording medium. According to the apparatus, crosstalks and jitters can be eliminated and reproduction with high reliability can be realized.