5results about How to "Reduce temperature sensitivity" patented technology

The invention relates to the technical field of martensitic steel, in particular to a 04Cr13Ni5Mo stainless steel plate rolling and temperature control process, which comprises the following steps: heating a pretreated blank to 1190-1210 DEG C at a heating rate of more than 0 DEG C and less than or equal to 5 DEG C / min, and soaking for more than or equal to 2 hours; the rolling reduction rate of the blank is controlled to be 12%-15%, and compared with the reduction rate of the pass before final rolling, the reduction rate is reduced by 20%-25%; stacking slow cooling is larger than or equal to 550 DEG C, and the plate yield is increased by 30% or Through heat treatment processes of normalizing at 1040 DEG C + / -10 DEG C, preserving heat of a plate with the thickness of 85 mm for 4 hours, preserving heat of a plate with the thickness of 115 mm for 5 hours, tempering at 620 DEG C + / -10 DEG C, preserving heat of the plate with the thickness of 85 mm for 6 hours and preserving heat of the plate with the thickness of 115 mm for 8 hours, the yield ratio is stabilized at 0.8-0.85, and the uniformity of mechanical properties is improved by 25%. The stable yield ratio reduces the deformation amplitude of plates and workpieces by more than 40% during later processing, additional repair is not needed, and the production cost is reduced.

The invention discloses a wide-temperature long-wave infrared coaxial four-mirror optical lens for space tiny dark and weak target detection, and solves the problems that an existing optical lens for space tiny dark and weak targets is large in size, high in weight and poor in temperature adaptability. The first reflecting mirror, the second reflecting mirror, the third reflecting mirror and the fourth reflecting mirror are sequentially and coaxially arranged from a light incident end to a light emergent end; the reflecting surfaces of the first reflecting mirror and the second reflecting mirror are oppositely arranged, and the reflecting surfaces of the third reflecting mirror and the fourth reflecting mirror are oppositely arranged; light through holes are formed in the centers of the second reflector, the third reflector and the fourth reflector; the second reflector is used for receiving incident light and reflecting the incident light to the first reflector, and light beams reflected by the first reflector enter the fourth reflector through light through holes in the centers of the second reflector and the third reflector and are reflected to the third reflector for reflection. And the light beams reflected by the third reflector pass through a light through hole in the center of the fourth reflector and then are converged to a photosensitive receiving surface of an external detector.

This invention provides a composite microwave dielectric ceramic, its preparation method, and its application, belonging to the field of electronic ceramics technology. The composite microwave dielectric ceramic provided by this invention includes a main material, auxiliary materials, and sintering aids; the main material is Mg2SiO4; the auxiliary materials include composite perovskite ceramics and metal oxides; the composite perovskite ceramic is Ba... 0.5 Sr 0.5 TiO3; the metal in the metal oxide and / or metal carbonate includes one or more of Ba, Zn, Zr, and Mn. The composite microwave dielectric ceramic provided by this invention possesses low dielectric constant εr, low dielectric loss, and a near-zero resonant frequency temperature coefficient τf. Simultaneously satisfying the advantages of low loss DF, low dielectric constant εr, and near-zero resonant frequency temperature coefficient τf, it can meet the requirements of 5G microwave and millimeter-wave band communication products.

The invention discloses a thick-film resistor with high strain sensitivity and low temperature sensitivity and a preparation method thereof, and belongs to the technical field of functional materials, electronic elements and sensors. The preparation problem of the thick-film resistor with high strain sensitivity and low resistance temperature coefficient is solved. The preparation method comprises the following steps: weighing lead oxide, boron oxide and silicon dioxide, uniformly mixing, completely melting into molten glass, carrying out water quenching, and carrying out ball milling on the water-quenched glass slag to obtain lead borosilicate glass powder; weighing RuO powder and lead borosilicate glass powder, adding an organic carrier, mixing, adding into a three-roller grinder, and fully grinding to be fine and uniform, so as to obtain resistance paste; and coating a cleaned substrate with the resistance paste in a silk-screen printing manner, and in an air atmosphere, controlling the sintering peak temperature within the range of 750-950 DEG C and the heat preservation time of the sintering peak temperature within the range of 10-360 minutes to obtain the thick-film resistor with both high strain sensitivity and low temperature sensitivity.

This application provides a lens module and an electronic device. The lens module includes an imaging lens group, a light filter, and an image sensor, the imaging lens group includes a plurality of lenses whose optical axes mutually overlap, the plurality of lenses include a liquid lens, a plastic lens, and a functional optical element, the functional optical element is a functional lens and / or a diffractive optical element, and a refractive index temperature coefficient β of the functional lens meets: -9:optical-5≤β≤9×10-5. According to the lens module and the electronic device provided in embodiments of this application, the functional optical element is disposed in the imaging lens group including the liquid lens, so that a temperature effect problem of a lens module including a liquid lens in the conventional technology can be resolved.