摘要:
An object is to provide a biological sample observation system wherein light damage to the biological sample is decreased, and observation can be performed accurately and quickly over a long period of time. A biological sample observation system which continuously obtains information on a biological sample that is cultured inside of a culturing container has: an imaging section which observes mutually different regions that are previously selected, among regions to be observed including the biological sample, through an object lens for observing the biological sample in the culturing container through a part of the culturing container; an autofocus section which detects the focusing of the object lens with respect to a predetermined region among the regions to be observed; and a focusing drive control section which controls the focusing of the object lens when the biological sample is observed using the imaging section, based on the detection result of the focusing previously performed by the autofocus section. After the focus detection is performed by the autofocus section, without being intervened by the focus detection using the autofocus section, and the different regions are continuously observed by the imaging section, with the focusing controlled by the focusing drive control section.
摘要:
A cell culture detection apparatus includes a culture vessel that houses cells together with a culture liquid, a culturing device that cultures the cells under predetermined culturing conditions, a detection device that detects a feature of the cells among the cells being cultured, and a light blocking device that blocks the culture vessel from environmental light when the feature is not detected.
摘要:
An optical pick-up apparatus for reproducing information recorded on a magneto-optical record medium including a semiconductor laser emitting a linearly polarized laser beam, and a polarizing film provided between a glass prism and a uniaxial birefringent crystal prism. The laser beam emitted by the semiconductor laser is made incident upon the polarizing film via the glass prism and is reflected thereby. The apparatus further includes an objective lens projecting the laser beam reflected by the polarizing film onto the magneto-optical record medium as a fine spot and converging a return laser beam reflected by the record medium toward the polarizing film. The return beam transmitted through the polarizing film is refracted by the uniaxial birefringent crystal prism and is divided into ordinary light and extraordinary light, which are received by a first photodetector to produce a reproduced information signal. The return beam reflected by the polarizing film is made incident upon a hologram and is diffracted thereby into .+-.1-order beams which are received by a second photodetector to produce a focusing error signal and a tracking error signal.
摘要:
An object of the present invention is to provide a method for introducing a physiologically active substance such as a gene into a cell, which introduces a physiologically active substance such as any given gene into any given cell in a view under a microscope, while significantly reducing invasiveness to the cell, and a device used for the above method. The present invention provides a method for introducing a physiologically active substance into a cell, which comprises: allowing a physiologically active substance to attach around a needle having a diameter of 500 nm or less, provided that it is able to be inserted into a cell; and inserting the above-described needle into the cell; and a microinjection device for carrying out the aforementioned method.
摘要:
An optical pick-up head for reading writing information from on a magneto-optical record medium including a semiconductor laser, a multi-image plane parallel plate for separating an incident light beam emitted by the semiconductor laser from a return light beam reflected by the optical record medium and dividing the return beam transmitted through and refracted by the multi-image plane parallel plate into a plurality of return light beams, and a signal detecting photodetector receiving a plurality of return light beams, wherein the multi-image plane parallel plate is formed by first and second prisms made of birefringent material and is arranged such that major and minor axes of astigmatism introduced by the plane parallel plate are inclined by 45.degree. with respect to an information track. An optic axis of the first prism is set such that the return beam is separated into ordinary and extraordinary light beams having identical intensities and an optic axis of the second prism is rotated with respect to the optic axis of the first prism. The optical elements are positioned and mounted on a mounting substrate having guide walls formed by a photolithography.
摘要:
An ultrasonic piezoelectric transducer and an ultrasonic actuator for performing enhanced elliptical vibration comprise a first laminated piezoelectric element having a first fixed end, a resonator mounted to the opposite end of the first laminated piezoelectric element, a second laminated piezoelectric element having one end thereof fixedly mounted to the resonator in a direction other than a vibrating direction of the first laminated piezoelectric element, and a load mass fixedly mounted to the opposite end of the second laminated piezoelectric element. This structure permits the enhanced elliptical vibration of the transducer to have a large, controllable amplitude.
摘要:
An optical pick-up head for reading writing information from on a magneto-optical record medium including a semiconductor laser, a multi-image plane parallel plate for separating an incident light beam emitted by the semiconductor laser from a return light beam reflected by the optical record medium and dividing the return beam transmitted through and refracted by the multi-image plane parallel plate into a plurality of return light beams, and a signal detecting photodetector receiving a plurality of return light beams, wherein the multi-image plane parallel plate is formed by first and second prisms made of birefringent material and is arranged such that major and minor axes of astigmatism introduced by the plane parallel plate are inclined by 45.degree. with respect to an information track. An optic axis of the first prism is set such that the return beam is separated into ordinary and extraordinary light beams having identical intensities and an optic axis of the second prism is rotated with respect to the optic axis of the first prism. The optical elements are positioned and mounted on a mounting substrate having guide walls formed by a photolithography.
摘要:
An ultrasonic motor comprising an elastic body, at least two laminated piezoelectric bodies clamped by a portion of the elastic body, an ultrasonic oscillator for exciting simultaneously a plurality of shrunk and retreated oscillation modes on the elastic body, to generate ultrasonic elliptic oscillation, and an element to be driven urged against a portion of the ultrasonic oscillator and movable with respect to the ultrasonic oscillator.
摘要:
An ultrasonic motor characterized by comprising:an ultrasonic oscillator for generating ultrasonic oscillation on a specific surface;a movable body pressure-bonded to a specific surface of the ultrasonic oscillator for moving the movable body by the ultrasonic oscillator in a given direction by ultrasonic oscillation; anda sliding element provided on one of a contact surface of the ultrasonic oscillator and a contact surface of the movable body and having a porous oxide coating in which hydrators are formed to substantially fill small holes in the oxide coating.
摘要:
An optical pick-up head for reading writing information from on a magneto-optical record medium including a semiconductor laser, a multi-image plane parallel plate for separating an incident light beam emitted by the semiconductor laser from a return light beam reflected by the optical record medium and dividing the return beam transmitted through and refracted by the multi-image plane parallel plate into a plurality of return light beams, and a signal detecting photodetector receiving a plurality of return light beams, wherein the multi-image plane parallel plate is formed by first and second prisms made of birefringent material and is arranged such that major and minor axes of astigmatism introduced by the plane parallel plate are inclined by 45.degree. with respect to an information track. An optic axis of the first prism is set such that the return beam is separated into ordinary and extraordinary light beams having identical intensities and an optic axis of the second prism is rotated with respect to the optic axis of the first prism. The optical elements are positioned and mounted on a mounting substrate having guide walls formed by a photolithography.