摘要:
An optical module including a temperature measurement module and an optical part having a temperature dependency. The module includes a temperature control part mounted directly or indirectly on the optical part and the temperature measurement part for controlling a temperature of the optical part and the measurement part by thermal contact. An adjustment system is also provided for adjusting a difference of the temperature of the optical part and the measurement part by controlling the heat flow into/out of the optical part or the measurement part.
摘要:
An optical module including a temperature measurement module and an optical part having a temperature dependency. The module includes a temperature control part mounted directly or indirectly on the optical part and the temperature measurement part for controlling a temperature of the optical part and the measurement part by thermal contact. An adjustment system is also provided for adjusting a difference of the temperature of the optical part and the measurement part by controlling the heat flow into/out of the optical part or the measurement part.
摘要:
An optical filter is provided on a first thermo-module whose temperature is controlled to be constant, via a base. Accordingly, a wavelength discrimination characteristic of the optical filter and an optical isolator can be stabilized, thereby realizing more accurate wavelength locking. Further, a second thermo-module is provided on the first thermo-module whose temperature is controlled to be constant. Accordingly, the temperature control range of the second thermo-module can be expanded, and hence the wavelength variable range of a semiconductor laser device provided on the second thermo-module via a base and a submount can be expanded.
摘要:
A temperature adjustment device has a first thermoelectric cooling module, a second thermoelectric cooling module on which the first thermoelectric cooling module is provided, and a heat generating element which is provided on the first thermoelectric cooling module and a temperature thereof is adjusted, where assuming that a substrate area of the first thermoelectric cooling module on which the heat generating element is provided is S1(mm2) and that an amount of generated heat of the heat generating element is Qd(mW), the relationship of 20≦Qd/S1≦200 is met.
摘要翻译:温度调节装置具有第一热电冷却模块,设置有第一热电冷却模块的第二热电冷却模块和设置在第一热电冷却模块上的发热元件及其温度,其中假设 设置有发热元件的第一热电冷却组件的基板面积为S1(mm 2),发热元件的发热量为Qd(mW),关系为20 <= QD / S1 <= 200 IS MET
摘要:
An optical module of the present invention can stabilize e.g. the temperature of a wavelength monitor portion so that the oscillating wavelength of a laser diode is stabilized. The laser diode and the wavelength monitor portion for monitoring the wavelength of the laser diode are included in a package, and are mounted onto a thermo module. The wavelength monitor portion comprise at least an optical filter positioned to receive and filter at least a component of the laser beam and a light receiving device to receive the filtered light through the optical filter and monitor a wavelength of the laser beam. A heat shield member for reducing heat transmission from the package to the wavelength monitor portion is arranged in at least one portion of a peripheral area of the wavelength monitor portion.
摘要:
A Peltier module comprising: thermoelectric elements in which plural p-type and n-type thermoelectric elements are alternately arranged, metal electrodes placed in both ends of the thermoelectric elements in order to connect the thermoelectric elements in series, and metal substrates on at least a part of which surfaces an insulating thin film is formed, the metal substrates being oppositely placed so as to be connected to the metal electrodes and sandwich the metal electrodes and the thermoelectric elements.
摘要:
A superconducting wire is formed by twisting a bundle of a plurality of superconducting material filaments in which one material filament is arranged in a central portion of the filament bundle and a plurality of other material filaments arranged outside the central material filament so as to surround the central one. The filament bundle is twisted in that the central material filament is substituted with another one of outer material filaments one by one in order periodically during a twisting process along an axial direction of the filament bundle. A super-conducting cable is formed by twisting a bundle of a plurality of superconducting material wires with each other about a core member arranged at a central portion of the bundle and each of the superconducting material wire is essentially composed of the material filaments of the characters described above, wherein substituting positions of the central material filaments and outer material filaments in the respective superconducting material wires are shifted with each other along an axial direction of the material wire bundle.
摘要:
It is an object to provide a cooling device with an increased leeward cooling capacity without increasing the number of heat radiation fins to be installed and the amount of cooling air.The cooling device comprises a heat-receiving block thermally connected to a heat-generating element and heat radiation fin groups having a plurality of fins thermally connected to the heat-receiving block. A flow of cooling air is set in the direction parallel to the heat-receiving block. The plurality of heat radiation fin groups are arranged in tandem along the flow direction of the cooling air. Of the plurality of the heat radiation fin groups, the fin pitch of the heat radiation fin group arranged on the windward side of the cooling air is larger than the fin pitch of the heat radiation fin group arranged on the leeward side of the cooling air.
摘要:
Provided are coating composition containing an organic polymer particle (A) composed of an organic polymer having a hydroxyl group and a cationic group in a molecule, the weight average particle size of which being 10 to 35 μm, and a base resin (B), wherein the content of the organic polymer particle (A) is 0.5 to 5.0% by weight in the solid content of the coating composition, and a method of producing the same, and a coating film and underwater structure using the coating composition. The base resin (B) has a group represented by the following general formula (1): —COO-M-OCO-A (1) (wherein, M represents a divalent or higher valent metal, and A represents an organic acid residue of monobasic acid) or a group represented by the following general formula (2): —COO—Si(R1R2R3) (2) (wherein, R1, R2 and R3, which may be the same or different, represent an isopropyl group or an n-butyl group) in a side chain, or has a cross-linking structure represented by the following general formula (3): —COO-M-OCO— (3) (wherein, M represents the same meaning as described above).
摘要翻译:本发明提供含有分子中具有羟基和阳离子性基团的有机聚合物(重量平均粒径为10〜35μm)和基础树脂(B)的有机聚合物粒子(A)的涂料组合物, 其中,所述有机聚合物粒子(A)的含量为所述涂料组合物的固体成分中的0.5〜5.0重量%,其制造方法,以及使用所述涂料组合物的涂膜和水下结构体。 基础树脂(B)具有以下通式(1)表示的基团:-COO-M-OCO-A(1)(其中,M表示二价以上的金属,A表示有机酸残基 一元酸)或由以下通式(2)表示的基团:-COO-Si(R 1 R 2 R 3)(2)(其中,R 1,R 2和R 3可以相同或不同,表示异丙基或n (3)表示的交联结构:-COO-M-OCO-(3)(其中,M表示与上述相同的含义)。
摘要:
A medical tubing having rigidity, flexibility, transparency and heat resistance and, additionally, acceptable flexural modulus and tensile strength and further having no stickiness between surfaces of the tubing is provided. The medical tubing is composed of a resin composition containing a low-density ethylene/&agr;-olefin copolymer having a density of 0.860-0.900 g/cm3 polymerized with a metallocene catalyst and a styrene/ethylene-butylene/olefin block copolymer.