摘要:
An object of the present invention is to provide an image projector capable of projecting a high-quality image while realizing small size. In the image projector, a light flux is deflected two-dimensionally by turning a reflector for reflecting a light flux emitted from a light source around a second axis almost orthogonal to a first axis as a center by resonant drive while turning the reflector around the first axis as a center by non-resonant drive. Shape of one or more optical surfaces of a projection optical system for projecting an image onto a projection plane by guiding light onto the projection plane includes a shape for performing a correction for maintaining scanning speed of the light flux along one scan direction on the projection plane almost constant and a shape for performing a correction for suppressing a distortion in an image along the other scan direction almost orthogonal to the one scan direction on the projection plane. By controlling turn of the reflector, at least one of a correction for maintaining scanning speed of the light flux along the other scan direction on the projection plane almost constant and a correction for suppressing a distortion in an image along the one scan direction on the projection plane is performed.
摘要:
Disclosed is a near field light generating device comprising a first medium layer which transmits light from a light source. This near field light generating device generates near field light by using light irradiating a plasmon probe through the first medium. This near field light generating device is characterized in that a second medium layer having a refractive index lower than that of the first medium layer is formed between the first medium layer and the plasmon probe.
摘要:
A two-dimensional image is displayed on a screen (SC) by scanning the screen (SC) two-dimensionally with light beams from a laser light source (1) that are deflected to orthogonally-intersecting first and second scanning directions by means of a mirror (10) in a deflection apparatus (3). The deflection apparatus (3) is arranged to incline obliquely in the second scanning direction (e.g. vertical direction) lower in a scanning speed than the first scanning direction (e.g. horizontal direction), and performs an oblique projection onto the screen (SC). Assuming a direction in which the incidence angle of a light beam deflected by the deflection apparatus (3) and entering the screen (SC) increases in the second scanning direction is positive side, the light beam from the laser light source (1) impinges on the deflection apparatus (3) from the negative side in the second scanning direction, and the normal to the mirror (10) in the deflection apparatus (3) in a state where the center of the screen is displayed inclines to the negative side in the second scanning direction with respect to the normal to the screen (SC).
摘要:
A recorder has a recording head which uses light for information recording to a recording medium. The recording head has a slider and an optical waveguide. The slider moves relative to the recording medium while floating thereon. The optical waveguide is provided in the slider and has a refractive index difference of 20% or more between a core and a cladding.
摘要:
An optical element that condenses light emitted from a light source has: an entrance surface where the light enters; an exit surface from which the light entering inside via the entrance surface; and a reflection surface that directs, to the exit surface by total reflection, part of the light entering the inside via the entrance surface. The reflection surface has an axis of symmetry of sixfold or higher-order-fold rotation. The optical element fulfills conditional formula: 0.3
摘要:
An optical head having: a graded index lens which receives incident light radiated from a linear optical guide at one end surface of the graded index lens and transmits the incident light from the other end surface of the graded index lens, the graded index lens is adapted to form a light spot at a position that is away from the other end surface from which the incident light is transmitted; a light path deflection section which deflects light transmitted from the graded index lens, the light path deflection section is arranged between the other end surface from which the incident light is transmitted and the position where the light spot is formed; and a slider which floats on a recording medium while moving relative to the recording medium, wherein at least the graded index lens and the light path deflection section are installed on the slider.
摘要:
A recorder has a recording head which uses light for information recording to a recording medium. The recording head has a slider and an optical waveguide. The slider moves relative to the recording medium while floating thereon. The optical waveguide is provided in the slider and has a refractive index difference of 20% or more between a core and a cladding.
摘要:
An antitumor agent comprising as an active ingredient a DNase, and novel DNases are disclosed. The novel DNases are derived from human stomach cancer cell line MKN-28 or human cervical cancer cell line HeLa, and do not act on normal cells but specifically act on cancer cells.
摘要:
To obtain an optical element for generating near-field light which can accurately detect positions of a plurality of minute structures formed on a metallic thin film provided to a condensing surface, and a method of adjusting an optical spot position of the optical element. The metallic thin film is formed on the condensing surface of the optical element that condenses incident light so as to generate near-field light smaller than an condensing spot B near a condensing point, and a plurality of openings (minute structure) for generating the near-field light are formed into a matrix matter on the metallic thin film, and position detecting structures are formed on positions that partitions the openings is formed. Scanning in X and Y directions is carried out by a light beam, and its reflected light is detected so that the positions of the openings are detected.
摘要:
An image taking apparatus has a solid-state image-sensing device, a shutter for shutting off the light incident on the solid-state image-sensing device, and a zoom optical system. The optical aperture stop of the zoom optical system and the shutter are located both on the optical axis but at different positions. During zooming, while the optical aperture stop moves along the optical axis, the shutter is kept stationary. The zoom optical system has an optical member having an optical power disposed on the image-plane side of the shutter.