摘要:
A light of measurement emitted from a semiconductor laser (1) is incident to a beam splitter formed by a prism (4). The light of measurement transmits into an incident surface (3) having a positive power so as to be emitted to a reflecting surface (5c) of measurement. A light reflected there is returned by a beam splitting surface (4a) so as to be reflected by a concave reflecting surface (6). The reflected light is returned so as to be condensed and focused on a light receiving surface (8) of sensor in a light measuring device (7). A position of a spot of light which is received is measured so as to measure the deflection angle of a rotating mirror (5). By doing this, it is possible to form a compact device even if the length of the optical path is long. As a result, it is possible to broaden the deflection angle measuring range.
摘要:
A cylindrical shell main body constituting a muffler main body is formed of two layers of an inner shell and an outer shell and has a cylindrical shape with a cross section that is not a perfect circle but is defined by alternated small arc portions and large arc portions similarly to an oval, or the like. The outer shell of the shell main body has, in each of their small arc portions, four radially projecting beads continuously extending in a circumferential direction along the small arc portions and being a predetermined distance apart from one another in an axial direction, thereby allowing an upper and lower gaps between the inner shell and the outer shell in the respective large arc portions of the shell main body to communicate with each other through passages formed by the beads.
摘要:
The present invention relates to an optical beam detection device for detecting deviation in the optical axis of light beams from a reference optical axis, the optical beam detection device provided with a converging member for converging the light beams; a light receiving surface that is disposed near the position where light beams that have an optical axis that coincides with the reference optical axis are converged by the converging member; an optical path deflector for deflecting light beams that have an optical axis that deviates from the reference optical axis, after they have passed through the converging member; and a light detecting element for detecting the light beams that have been deflected by the optical path deflector.
摘要:
This invention relates to a new composition containing the effective dosage of an aqueous extract of red vine leaves (1) and a diuretic (2) for preventing or alleviating the discomfort associated with mild-to-moderate chronic venous insufficiency of the legs. The compositions according to this invention may also contain pharmaceutically or dietetically acceptable additives.
摘要:
Provided is a semiconductor device including a semiconductor substrate which includes a first semiconductor layer of a first conductivity and a pair of second semiconductor layers disposed on the first semiconductor layer and spaced apart from each other to form a trench therebetween, wherein the second semiconductor layer includes a first impurity-diffused region of the first conductivity extending from a lower surface toward an upper surface of the second semiconductor layer, and a second impurity-diffused region of a second conductivity which extends from the lower surface toward the upper surface and is adjacent to the first impurity-diffused region, an insulating layer covering a sidewall of the trench, and a cap layer which is in contact with the semiconductor substrate and covers an opening of the trench to form an enclosed space in the trench, a material of the cap layer being almost the same as that of the semiconductor substrate.
摘要:
A cemented optical element is disposed on a test sample and a laser light which is emitted from a laser light source section is incident into a prismatic plane so as to separate the laser light into a reflected light on the separating plane and a transmitted light on the separating plane on a light path separating plane. The reflected light on the separating plane passes through a prismatic plane so as to be condensed on a light receiving plane. The transmitted light on the separating plane is reflected on a reflecting plane having power so as to be condensed. Spots are formed on the light receiving planes which came through the prismatic plane. Sensitiveness for measuring angles can be changed while changing the length of the light path and the power.
摘要:
A semiconductor light emitting device is disclosed, which comprises a substrate, and a multi-layer semiconductor film formed on the substrate, the multi-layer semiconductor film including a plurality of semiconductor layers overlaid on the substrate, the semiconductor layers having a light emission layer for emitting a light, wherein the light is picked up at a first side of the multi-layer semiconductor film, which is a side opposite to the substrate, wherein a pattern having a light pickup surface is formed on a light emitting portion of the multi-layer semiconductor film, the light pickup surface is in a (111) plane or a plane in the vicinity of the (111) plane, and an unevenness is formed on the light pickup surface.
摘要:
The present invention is an optical apparatus, e.g. an image display apparatus, which enables observation of a clear image at a wide field angle with substantially no reduction in the brightness of the observation image, and which is extremely small in size and light in weight and hence unlikely to cause the observer to be fatigued. The optical apparatus has an image display device (6), and an ocular optical system (7) for leading an image of the image display device (6) to an observer's eyeball (1). The ocular optical system (7) includes, in order from the image side, a third surface (5) which forms an entrance surface, a first surface (3) which forms both a reflecting surface and an exit surface, and a second surface (4) which forms a reflecting surface. The first to third surfaces (3 to 5) are integrally formed with a medium put therebetween which has a refractive index larger than 1. A bundle of light rays emitted from the image display device (6) enters the ocular optical system (7) while being refracted by the third surface (5) and is internally reflected by the first surface (3) and reflected by the second surface (4). Then, the ray bundle is incident on the first surface (3) again and refracted thereby so as to be projected into the observer's eyeball with the observer's iris position or eyeball rolling center as the exit pupil (1).
摘要:
A photographic film cassette manufacturing apparatus, has a perforator for providing a long film with perforations and a cutter for cutting the long film into individual filmstrips to be contained in the film cassette driven synchronously with transport of the long film. A magnetic recording head for recording data on a magnetic recording layer of the long film is driven in synchronism with the perforator and the cutter. The long film is transported in a first direction before being cut into the individual filmstrips. In cooperation with the cutting, a trailing end of the individual filmstrip in the first direction is moved in a direction which is reverse to the first direction to secure the trailing end to the spool. A cassette shell consisting of a pair of shell halves is temporarily assembled by mating the shell halves together while containing a spool inside the shell halves, and thereafter opened to an extent that confining elements still confine the position of flanges of the spool. The trailing end of the filmstrip is inserted into the opened cassette shell and secured to the spool.
摘要:
An image display apparatus which enables observation of a clear image at a wide field angle with substantially no reduction in the brightness of the observation image, and which is extremely small in size and light in weight. The image display apparatus has an image display device (7) and an ocular optical system (8) for projecting the image of the image display device (7) and leading the projected image to an observer's eyeball (1). The ocular optical system (8) has at least three optical surfaces, and a space formed by these surfaces is filled with a medium having a refractive index larger than 1. The three optical surfaces are defined as a first surface (3), a second surface (4), and a third surface (5), respectively, in the order in which light rays pass in backward ray tracing from the observer's eyeball (1) to the image display device (7). The optical surfaces are disposed such that light rays from the observer's eyeball (1) pass through the first surface (3) and are reflected by the second surface (4) and further reflected by the third surface (5), which is a reflecting surface having positive power, and the light rays reflected by the third surface (5) are reflected by the first surface (3) and pass through the second surface (4) to reach the image display device (7).