49results about How to "Increase reflective surface" patented technology

High-precision observation is made possible while allowing contact between a distal end of an objective lens and an optical element without damaging the distal end of the objective lens and the optical element even when attaching to and detaching from the distal end of the objective lens. Provided is an objective lens adapter including a fixed member that is fixed to a lens tube of an objective lens, a distal-end member including an optical element that is made to be placed in contact with the distal-end surface of the objective lens, and an elastic member that is disposed between the distal-end member and the fixed member and that urges the optical element in a direction that causes the optical element to contact the distal-end surface of the objective lens.

High-precision observation is made possible while allowing contact between a distal end of an objective lens and an optical element without damaging the distal end of the objective lens and the optical element even when attaching to and detaching from the distal end of the objective lens. Provided is an objective lens adapter including a fixed member that is fixed to a lens tube of an objective lens, a distal-end member including an optical element that is made to be placed in contact with the distal-end surface of the objective lens, and an elastic member that is disposed between the distal-end member and the fixed member and that urges the optical element in a direction that causes the optical element to contact the distal-end surface of the objective lens.

The invention relates to a heat-preserving rigid melamine foam with a low water absorption rate and a preparation method thereof, belonging to the technical field of polymer materials. The density of the low water absorption thermal insulation rigid melamine foam is less than 53kg / m 3 , The water absorption rate is as low as 6.7%, the thermal conductivity is as low as 0.034W / m·K, the closed cell rate is 80%, the compressive strength is 300kPa, and the limiting oxygen index is as high as 35%. In the preparation process of the present invention, small molecules of short-chain hydrophobic alcohols and solid fillers are added; side groups of the molecular chains of the melamine resin prepolymer modified by small molecules of short-chain hydrophobic alcohols are introduced into "hanging" short-chain hydrophobic alkyl groups, Effectively improve the hydrophobicity of the resin, and at the same time, the increase of the "hanging" short chain content with better flexibility can improve the toughness of the resin and reduce the foam pulverization rate; in the preparation stage of the modified hydrophobic melamine prepolymer foaming liquid, solid fillers are added as The nucleating agent can adjust the cell structure, and can effectively reduce the free energy barrier of the growth of the cell nuclei to promote the heterogeneous nucleation, and prepare the low water absorption thermal insulation rigid melamine foam with small cell size and uniform distribution.

The invention relates to a method of manufacturing a photovoltaic module comprising the following steps: a) assembling a front end part (10) comprising a front cover element and a photovoltaic cell, b) assembling a back end part (12) comprising a back reflector, a junction box and a back cover element, and c) connecting the assembled front end part (10) with the assembled back end part (12). Further, the invention relates to an assembled back end part (12) and to an interlayer foil (14).