摘要:
A silane-coupling-agent-treated silica having a sulfur-deviation range of 50 to 200%, comprising 100 parts by mass of silica surface-treated with 1 to 50 parts by mass of a silane coupling agent represented by the following general formula (1): Y3-Si-Z-S—CO—R (wherein Y is an acetoxy group or an alkoxy group with 1 to 6 carbon atoms, Z is an alkylene group with 1 to 8 carbon atoms, and R is a hydrocarbon group with 1 to 18 carbon atoms) is disclosed. Furthermore, a vibration-damping and vibration-isolating rubber composition comprising 100 parts by mass of a raw rubber material having C—C bonds in the main chain and 1 to 200 parts of the aforementioned silane-coupling-agent-treated silica is claimed.
摘要:
A semiconductor memory device includes a memory cell array divided into a plurality of areas, a common data bus connected to an input/output circuit, a plurality of individual data buses connected to different areas of the memory cell array through different paths respectively, and a bidirectional buffer connected to the common data bus and the individual data buses. In the semiconductor memory device, the bidirectional buffers data transmitted bidirectionally between the common data bus and a selected one of the individual data buses.
摘要:
An illumination light application structure provided for irradiating an observation object with illumination light in an observation optical apparatus provided with an objective optical system inside a lens barrel whose top is configured into a slender shape, includes a wavelength converting element located in the proximity of a position of an entrance pupil of the objective optical system; a light source emitting light whose wavelength is converted by the wavelength converting element; and an irradiation device irradiating the wavelength converting element with the light emitted from the light source through the objective optical system.
摘要:
An optical diffusion film comprises a plurality of diffraction grating cells formed on a substrate, each cell comprising a plurality of curved gratings disposed in parallel with each other and containing the same profile. Such film can be manufactured by embossing, using an original plate formed by etching a photosensitive material by means of an electronic beam exposure system to produce gratings. When such a film is provided with a reflection layer and exposed to light coming obliquely from above, highly bright and diffracted light is emitted in a predetermined direction.
摘要:
An observation apparatus is disclosed that includes two projection devices, a display panel, and a retaining and supporting member. The two projection devices are each provided with an aperture, and are positioned and oriented so that images are projected onto the display panel through the apertures. The display panel either includes a pupil-forming optical system that is formed of an image-forming element having positive optical power that is integral to the display panel or is sufficiently nearby it such that conjugate positions of the projection apertures are formed at pupil positions for observation. The retaining and supporting member is provided with a retaining mechanism that enables the display panel to be detachably attached to the supporting member.
摘要:
The circuit breaker of this invention comprises a pair of stationary contactors 2, 3 which are respectively provided with stationary contacts 2a, 3a, a movable contactor 4 which includes a pair of movable contacts 4a and which is capable of bridging both the stationary contactors, a switching mechanism section 10 which operates when an overcurrent has flowed through the stationary contactors, a crossbar 5 which separates the movable contactor from the stationary contactors upon the operation of the switching mechanism section, a contact pressure spring 7 which is engaged with the crossbar at one end and with substantially the central part of the movable contactor at the other end and which urges the movable contactor toward the stationary contactors, and arc extinction chambers 8 which are respectively disposed near both the end parts of the movable contactor and which extinguish an arc struck at the separation of the movable contactor from the stationary contactors.
摘要:
In order to provide a dual-surface lens sheet in which a color shift is reduced and positions of unit lenses on a front surface and a back surface are easily aligned even if the unit lenses are disposed in fine pitch when used for a rear projection screen which is used for a display device using a plurality of projector as light sources, a half-column-cylindrical-convex-lens is used in a lens sheet having lens sections on front surface and a back surface such that pitch ratio for disposing the unit lenses on the front surface and the back surface is in a range of 1:2 to 1:30 and disposition directions of the lens sections are uniform.
摘要:
A lens array sheet, a transparent screen using the same, and a rear-projection display device are provided in which it is possible to control a perspective angle for the image in both a horizontal direction and a vertical direction without causing a problem in that a gain (brightness) of a light is reduced by an optical absorption and an S/N ratio is reduced by an increased white dispersion.A first lens array 18 and a second lens array 20 which are formed by disposing a plurality of half-cylindrical lenses 17, 19 in parallel on a common plain (a surface of a base member layer 13a) such that longitudinal directions of the cylindrical lenses 17, 19 should be orthogonal to each other. Unified lens array layer 13b and a shading layer 16 in which a section through which a light does not transmit is formed on a focal plain of the lens array layer 13b form a lens array sheet. Furthermore, fresnel lens are combined so as to form a transparent screen.
摘要:
A three-dimensional observation apparatus is provided which includes an optical reflection member which reflects a light beam and converges the light beam after the reflection, and image projectors for right and left eyes which project a medical image for the right and left eyes on the optical reflection member and forms an exit pupil for the right and left eyes at a position apart from the optical reflection member by a predetermined distance. The apparatus also includes a holding member which keeps a positional relationship of the image projector for the right eye to the optical reflection member and a positional relationship of the image projector for the left eye to the optical reflection member.
摘要:
In order to provide a micro-lens sheet in which unit lenses are disposed in highly accurate pitch so as to control the light diffusing characteristics of the light emission direction not only in a horizontal direction but also over 360 degrees by using the lens function of one piece of lens sheet, a micro-lens sheet has a micro-lens array section in which unit lenses are disposed in approximate matrix in a second dimensional manner on at least one surface of a base board, and the micro-lens array section is formed on only one surface of the base board, the micro-lens array section includes the unit lens having an aspherical shape, and disposition pitch of neighboring unit lenses is 200 μm or shorter.