2results about How to "Reduce coating" patented technology

A wide-temperature, high-precision optical acceleration sensing chip and acceleration sensor based on the principle of a microcavity interferometer are disclosed. The acceleration sensing chip includes a first substrate, a second substrate, and a third substrate. An optical fiber mounting base and a light-transmitting hole are formed on the first substrate. The chip is characterized by a single-mode optical fiber assembly fixed on the optical fiber mounting base. The end face of the single-mode optical fiber assembly is precision ground and perpendicular to the axis of the optical fiber core. The optical fiber mounting base is a stepped hole with a first stepped portion and a second stepped portion. The single-mode optical fiber assembly includes a glass sleeve disposed on the outer layer and a single-mode optical fiber disposed in the core. The first stepped portion, the second stepped portion, the end face of the glass sleeve, and the end face of the single-mode optical fiber are all perpendicular to the core axis of the single-mode optical fiber. The first stepped portion forms a first fit with the end face of the glass sleeve, and the second stepped portion forms a second fit with the end face of the single-mode optical fiber.

This utility model discloses a high-efficiency hollow fiber membrane drying device, relating to the field of hollow fiber membrane drying technology. The device includes a housing with supporting legs at the lower end. A mounting groove is provided on one side surface of the housing, and a drying assembly is installed inside the mounting groove. Multiple unwinding wheels are located at one end of the housing, and a winding wheel is located at the other end. A material trough is provided between the winding wheel and the unwinding wheel. The drying assembly includes a first drying chamber and a second drying chamber, with the second chamber located above the first chamber. Heating wires are installed on the inner walls of both the first and second drying chambers. This solution solves the problems of uneven coating on the surface of existing hollow fiber membranes, slow coating drying time, and excessive coating liquid seeping into the membrane pores, leading to increased gas mass transfer resistance and low efficiency per strand.