Abstract: A light measuring apparatus includes a light source configured to emit light to a sample, and a light guide optics system configured to guide light generated as a result of applying the emitted light to the sample, to a photodetector, wherein the light guide optics system is provided in a lightproof unit, and includes optical elements for guiding the generated light to the photodetector, a positioning part for adjusting a position of at least one of the optical elements, and a position detecting part for detecting a position of at least one of the optical elements by an optical method, and the light measuring apparatus comprises a position adjusting part which adjusts the positions of the optical elements by controlling the positioning part and position detecting part, and a light emission control unit which controls operations of starting and stopping light emission of the position detecting part.

Abstract: A light measuring apparatus includes a light source configured to emit light to a sample, and a light guide optics system configured to guide light generated as a result of applying the emitted light to the sample, to a photodetector, wherein the light guide optics system is provided in a lightproof unit, and includes optical elements for guiding the generated light to the photodetector, a positioning part for adjusting a position of at least one of the optical elements, and a position detecting part for detecting a position of at least one of the optical elements by an optical method, and the light measuring apparatus comprises a position adjusting part which adjusts the positions of the optical elements by controlling the positioning part and position detecting part, and a light emission control unit which controls operations of starting and stopping light emission of the position detecting part.

Abstract: A surface treatment method capable of performing a thick layer machining of 300 to 500 ?m which is high in hardness, excellent in heat resistance and antibiotic operation on a surface of any kind of aluminum material is provided. The method is characterized by performing an anodic oxidation treatment by using a bath liquid involving an aqueous solution containing 250 gr/l to 350 gr/l of sulfuric acid and 15 gr/l to 25 gr/l of nickel sulfate under the conditions of (a) bath liquid temperature: ?10° C. to +25° C.; (b) voltage: DC 100 V to 200 V; and (c) current density: 0.5 A/dm2 to 20 A/dm2. To the above-described bath liquid, a low polymerization acrylic resin composition may further be added in the range of from 280 gr/l to 320 gr/l.

Abstract: There is provided a light measurement apparatus includes a light source, a container which includes a sample tank, a lens which condenses light from a sample accommodated in the sample tank or from the container which are exited by a exciting light from the light source, a photodetector which detects light from the sample accommodated in the sample tank or from the container, wherein the light passes through the lens, a position detecting unit which detects a position of the sample tank based on a detection output from the photodetector, and a position adjusting unit which sets the container or the lens based on a detection output from the position detecting unit.