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

A flame imitation manufacturing device of a fireplace relates to a flame imitation manufacturing device for simulating the burning state in a fireplace in the field of household appliances. Said device comprises a housing, a cross flow fan and a light source mounted on a base plate of the housing, a simulated fire chamber mounted on a back plate of the housing, ribbons mounted on the back plate of the housing by means of upper and lower strip bars and above the cross flow fan, and a light-transmitting glass plate mounted on the housing and in front of said ribbons. This invention, characterized in that said cross flow fan is a swinging one, is advantageous in that supplying wind non-directively by utilizing the swinging of said fan improves the flying state of ribbons so as to make the image state of burning flames more vivid, greatly enhances the authenticity of flames and lowers the cost thereof, and thus is adaptable to various flame imitation electrical-heated fireplaces and electrical appliances.

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.

An inflatable solar energy collector. The device uses two elongated and pressure-stabilized air chambers with a trough-shaped reflecting surface in between. The curvature of the reflecting surface is adjusted by adjusting the differential pressure between the two air chambers. The device can be configured to provide a focal point outside the air chambers or inside the air chambers. For the version using the external focal point an external energy receiver is appropriately positioned. For the version using the internal focal point, the receiver is mounted inside one of the air chambers.

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 compound water-based electromagnetic shielding coating, which is composed of conducting layer coating and insulating layer coating, weight proportions of each component of conducting layer coating are that emulsion 30-60 parts, conductive filler 40-50 parts, film forming additive 1-5 parts, thickening agent 0.5-1 parts, thixotropic agent 1-2 parts and pure water 10-15 parts. The weight proportions of insulating layer coating are that emulsion 90-95 parts, film forming additive 2-8 parts, thickening agent 0.5-1 parts and pure water 5-10 parts. The architectural emulsion is at least one of pure acrylate copolymer emulsion, styrene-acrylate copolymer emulsion and vinyl acetate- acrylate copolymer emulsion. The grain diameter of conducting nickel powder is micro grade, which has excellent oxidation resistance, and is combined with polymer emulsion, and electrical surface resistivity is greatly lowered. The shielding coating is coated on the inner surface of architecture according to the conducting / insulating / conducting mode, coating layer with the functions of conducting and electromagnetic shielding can be formed, the capabilities of resisting external electromagnetic interference and electromagnetic pollution can be effectively improved.

The invention provides a gradient refractive index medium lens and a gradient refractive index medium lens antenna, wherein a refractive index distribution of a semi-cylindrical gradient refractive index medium lens meets a formula disclosed in the specification, and a refractive index distribution of a hemispheric gradient refractive index medium lens meets a formula disclosed in the specification. According to the principle of optical transformation, the refractive index of the semi-cylindrical or hemispheric gradient refractive index medium lens is obtained by adopting conformal transformation calculation and is greater than 1. The semi-cylindrical or hemispheric gradient refractive index medium lens has the advantages of regular distribution, convenience for realization, and wide working band, can not only be used for imaging singly but also be used in the fields of communication and radar by increasing a reflecting surface, and is cooperated with other devices to form an antenna system. According to the gradient reflective index medium lens antenna provided by the invention, the semi-cylindrical or hemispheric gradient refractive index medium lens is used as a main body, thereby having the advantages of good directionality.

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).