摘要:
An image pickup apparatus having a simple configuration and being capable of performing switching between an image pickup mode based on a light field photography technique and a normal high-resolution image pickup mode is provided. The image pickup apparatus includes an image pickup lens 11, a microlens array section 12 where light passing through the image pickup lens 11 enters, and an image pickup device 13 sensing light emitted from the microlens array section 12, and the focal length of each of microlenses constituting the microlens array section 12 is variable in response to an applied voltage.
摘要:
An optical system and pick-up device having an optical magnification suitable for three different optical disc formats and a light emitting means for emitting a laser beam having a wavelength corresponding to each disc in the optical system of the optical pickup for recording and/or reproducing an information signal to the optical discs. The optical pickup device has a first light emitting unit for emitting a laser beam having a first wavelength or a second wavelength, a second light emitting unit for emitting a laser beam having a third wavelength, a first collimator lens for transmitting the laser beams having the first or second wavelengths, a second collimator lens for transmitting the laser beam having the third wavelength, a first objective lens for transmitting the laser beams having the first or third wavelengths, and a second objective lens for transmitting the laser beam having the second wavelength.
摘要:
Lubricant, which is shown by the following formula: CF3—(OCF2CF2)m—(OCF2)n—OCF3 [Chem. 1] and contains PFPE whose average molecular weight is 11000 or more, and PTFE particles of which the average diameter of primary particles is 1 μm or less, is disposed on at least one of the first raceway of the first bearing ring, the second raceway of the second bearing ring, the surfaces of the rolling elements, and the surfaces of the respective pockets of the cage which face the rolling elements, in a ratio of 9 to 16 g per 1 m2 with respect to a total area obtained by adding up the area of the first raceway, the area of the second raceway, the area of the surfaces of the rolling elements, and the area of the surfaces of the respective pockets of the cage which face the rolling elements.
摘要:
An optical pickup includes a first optical system for collecting first laser light emitted from a first laser light source onto a first disk, and guiding reflected light from the first disk to a photoreceptor; a second optical system for collecting second laser light emitted from a second laser light source onto a second disk, and guiding reflected light from the second disk to a photoreceptor; a second objective lens for collecting the second laser light onto the second disk and receiving the reflected light from the second disk, the second objective lens being movable in a radial direction passing through the center of the second disk, and a first objective lens for collecting the first laser light onto the first disk and receiving the reflected light from the first disk, the first objective lens being disposed offset from the radial direction and adjacently to the second objective lens.
摘要:
A biometrics authentication system capable of achieving high precision and high safety is provided. A biometrics authentication system includes: a light source applying light to a living organism; a microlens array section condensing light from the living organism, and including a plurality of microlenses each having a different refractive power; an image pickup device obtaining image pickup data on a plurality of layers of the living organism on the basis of light condensed by the microlens array section; and an authentication section performing authentication of the living organism on the basis of image pickup data on the plurality of layers of the living organism.
摘要:
In a solder paste which is a mixture of a flux and low melting point metal particles, low melting point metal fine particles manufactured by a conventional method or apparatus therefor include particles having widely varying particle diameters. Accordingly, the solder paste could not completely fill the minute holes in a mask for application to minute solder portions by printing, or mask removability was poor. According to the present invention, a mixture of a heat resistant continuous phase liquid and coarse metal particles in molten state is passed through a porous membrane to form the coarse low melting point metal particles into fine particles with a predetermined diameter. An apparatus according to the present invention comprise a porous membrane between a heating and dispersing mechanism and a cooling mechanism, and a pressure vessel connected to the heating and dispersing mechanism for applying a high pressure to the heating and dispersing mechanism.
摘要:
In order to improve photoelectric conversion properties of a silicon-based thin-film photoelectric converter to which a conductive SiOx layer is inserted to obtain an optical confinement effect, the silicon-based thin-film photoelectric converter according to the present invention includes an i-type photoelectric conversion layer of hydrogenated amorphous silicon or an alloy thereof, an i-type buffer layer made of hydrogenated amorphous silicon, and an n-type Si1-xOx layer (x is 0.25-0.6) stacked successively, wherein the buffer layer has a higher hydrogen concentration at its interface with and as compared with the photoelectric conversion layer and has a thickness of at least 5 nm and at most 50 nm. Accordingly, generation of silicon crystal phase parts and reduction of resistivity are promoted in the n-type Si1-xOx layer, contact resistance at the interface is reduced, and FF of the photoelectric converter is improved, so that the photoelectric converter achieves improved properties.
摘要:
A hard coating superior in wear resistance and in oxidation resistance and also a hard coating superior in high-temperature anti-friction performance and oxidation resistance over the conventional coating film are provided. One of the typical hard coating excellent in wear resistance and oxidation resistance, which comprises a composition represented by the formula: (Ala,Mb,Cr1-a-b)(C1-eNe) (where M represents W and/or Mo, a, b and e that represent atomic ratios of Al, M and N, respectively, satisfy the following relations): 0.25≦a≦0.65, 0.05≦b≦0.35, and 0.5≦e≦1.
摘要:
An optical pickup housing an optical system including a collimator lens for converting laser light incident on the collimator lens into an approximately parallel light beam, and an objective lens for receiving the laser light converted into the approximately parallel light beam and focusing the laser light onto a recording medium, the optical pickup having a light source configured to emit a plurality of laser beams of different wavelengths; a magnification conversion element arranged between the collimator lens and the objective lens; a bypass optical path configured to bypass the magnification conversion element; and optical path selection unit configured to select, according to a wavelength of each of the plurality of laser beams, whether each of the plurality of laser beams is to pass through an optical path passing through the magnification conversion element or through the bypass optical path.
摘要:
An objective lens device includes: a first objective lens having a first numerical aperture, which can condense light into a disc-shaped first optical recording medium including a first cover layer of first thickness; a second objective lens having a second numerical aperture which is smaller than the first numerical aperture, which can condense light into a disc-shaped second optical recording medium including a second cover layer of second thickness which is thicker than the first thickness; a third objective lens having a third numerical aperture which is smaller than the second numerical aperture, which can condense light into a disc-shaped third optical recording medium including a third cover layer of third thickness which is thicker than the second thickness; and a lens holder configured to integrally hold the first, second, and third objective lenses.