摘要:
A spatial light modulator which includes a light modulation layer which is interposed between two photoconductive layers and laminated to both layers; the two photo conductive layers have charge images written thereon, respectively, by illumination of a writing light carrying optical information; the illumination direction of the writing light to the photoconductive layers are different from each other; and the two photoconductive layers permit the reading light to pass therethrough. When illuminated by a reading light via either of the first or second photoconductive layers, the light modulation layer optically modulates the reading light in accordance with the first and second charge images, under the presence of a voltage applied to the modulator. Thus it reads read out the first information and second information. The first and second photoconductive layers permit the reading light to pass therethrough.
摘要:
An apparatus for processing information carried by an electro-magnetic radiation beam. The apparatus includes a charge holding member for storing a charge latent image, a generator for generating an electro-magnetic radiation beam which is a superimposition of a plurality of electro-magnetic radiation beams with different wavelength ranges, a filter for separating the superimposed beam into the plurality of electro-magnetic radiation beams and a photo-conductive member provided adjacent to the charge latent image holding member and having an impedance which varies according to the intensity of each of the plurality of beams separated by the filter. Charge latent images corresponding to each of the plurality of beams are thus recorded on the charge latent image holding member. The charge latent images thus recorded on the charge latent image holding member are reproduced by means of a photo-modulation member provided instead of a photo-conductive member.
摘要:
An efficiency polarization converter of few optical components for converting a randomly polarized light into a single beam of linearly polarized light, comprises a first optical device receiving the random light and projecting two linearly polarized lights one projected in a first direction, another to a second optical device which changes the polarization plane thereof, the polarization changes light being directed by a third optical device to the first direction, thereby the two linearly polarized light are combined and aligned to have a common polarization to become the single beam linearly polarized light projected in the first direction. Typical first optical device is a polarization beam splitter, a typical second optical device is a quarterwave plate with a mirror, a halfwave plate or a Fresnel rhomb with a mirror, or a photomodulation material interposed between biased electrodes with a mirror, a typical third optical device is a polarization beam splitter, a prism or a mirror. The first and third optical devices may be combined to a 3-prism structure. The polarization converter may be used with liquid crystal light modulators to utilize image display systems.
摘要:
There are provided a method of modulating a photo-modulation layer correspondingly with an electric field applied thereto by applying an alternating electric field to a semiconductor layer disposed adjacent to the photo-modulation layer to vary a thickness of a depletion layer thereof responsive to the alternating electric field and applying the electric field to the photo-modulation layer while the alternating electric field is applied to the semiconductor layer and varying the thickness of the depletion layer, and a system for reproducing a charge latent image recorded in a recording medium which has at least a charge hold layer holding the charge latent image comprising a photo-modulation layer disposed adjacent to the recording medium so as to be subjected to an electric field generated by the charge latent image held on the charge hold layer, a semiconductor layer disposed adjacent to the photo-modulation layer, the semiconductor layer having a depletion layer which has a capacitance variable in response to an applied varying electric field, means for applying the varying electric field to the semiconductor layer for varying the capacitance of the depletion layer thus subjecting the electric field generated by the charge latent image being applied to the photo-modulation layer and means for projecting a reading light passing through the photo-modulation layer and for detecting modulation of the reading light passed therethrough.
摘要:
There is provided a photoelectric conversion device for an electro-magnetic radiation beam incident thereto, into a charge pattern, the electro-magnetic radiation beam carrying information intended to be recorded. The device has electrodes, a photo-conductive layer member laminated to the electrodes having maximum thickness and a surface defining the maximum thickness between the electrodes, and a gap defined between the surface and a recording member disposed to face the surface of the photo-conductive layer member. There is further provided an apparatus for recording a charge latent image without losing the high resolution. The apparatus has a photoelectric conversion device having an electrode and a photo-conductive layer member on which the charge latent image is generated by projecting an optical image carrying information signals to the photo-conductive layer member, and a recording member having an electrode and a charge holding layer member facing the photo-conductive layer member to form a gap therebetween. A predetermined voltage is applied between the electrodes of the photoelectric conversion device and the recording member to transfer the charge latent image to the charge holding member by spark discharge.
摘要:
The medical handpiece of the present invention includes a cutting tool having a flexible shank and a cutting bur, a plastically deformable tubular casing for the cutting tool, a handpiece body detachably holding the cutting tool, bearing members disposed in the casing, an inner intervening member for receiving the shank, and an outer intervening member arranged around the inner intervening member. The inner and outer intervening members are composed of a plurality of segments, and each segment is arranged between or on distal or proximal side of the bearing members. Each segment of the outer intervening member is further composed of a plurality of sub-segments. Annular members having the outer diameter that is larger than that of the outer intervening member are arranged between the sub-segments of the outer intervening member. The present handpiece provides improved operationality since shaking is hardly generated even when the casing is flexed.
摘要:
A projection type display apparatus includes: a reflective polarizing plate for each color light which transmits each of R light, G light and B light therethrough, allows each transmitted light to enter a corresponding reflective liquid crystal panel for each color light, and reflects image light of each color which has been subjected to light modulation in accordance with an image signal of each corresponding color light by the reflective liquid crystal panel for each color light; an absorption type polarizing plate for R and G lights and a reflection type polarizing plate for B light, each of which removes an unnecessary polarized component from the image light of each color reflected by the reflective polarizing plate for each color light; a color combination optical system which subjects the image light of each color transmitted through the transmission type polarizing plate for each color light to color combination.
摘要:
The present invention includes a reflection portion which light-modulates three primary color lights by three rectangular reflective liquid crystal light modulators, then color-combine the light-modulated lights and reflects the resultant light; and a projection lens which projects the reflected color-combined light onto a plane mirror. The three reflective light modulators are arranged in such a manner that their long side directions coincide with a perpendicular direction, and two of the three reflective light modulators are arranged in such a manner that their short side directions become parallel with a projecting direction of image light from a color separation/combination optical system.
摘要:
A projection display apparatus that is lightweight and provides bright, high quality images is provided. The projection display apparatus comprising a color separation and synthesis optical system 4, that performs color synthesis, generating an image, after separating light of the three primary colors of determined polarities into the respective three colors, and modulating those three color lights in relation to respective image signals therefor, and a projection lens 106. The color separation and synthesis optical system 4 comprises polarized light separating means 8, 9, 11 and 16 disposed in respective diagonal directions therein and reflecting spatial light modulating elements 12, 13 and 14 disposed to perform light modulation coordinated to an image signal for each respective color, for light separated according to polarization by the four polarized light separating means 8, 9, 11. Three spatial light modulating elements 12, 13 and 14 are disposed on the outer side of the polarized light separating means 9, 11 and 16, other than the polarized light separating means 8, that is disposed on that side of incident light, at least two from among the four polarized light separating means 8, 9, 11 and 16 are wire grid polarized light separating plates and an astigmatism correcting lens 21 is provided between the polarized light separating means 16 disposed on that side at which projection is performed and at least one of the spatial light modulating elements.
摘要:
The present invention relates to dental apparatus including a fluid reservoir having a connection part, and a fluid reservoir receptor section having a reception part. The connection part includes a cylindrical member, a shaft member slidably arranged through the cylindrical member, and having a channel, a fluid passage defined between the channel and the cylindrical member, and an air passage formed in the cylindrical member for taking external air in. The openings of the fluid and air passages are openable by sliding the shaft member. The reception part includes a passage, a valve in the opening of the passage for taking external air in, and a releaser member for sliding the shaft member to open the openings of the fluid and air passages when the fluid reservoir is installed on the fluid reservoir receptor section.