3 results about "Lead selenide" patented technology

This invention discloses a mid-infrared detection array based on gate modulation photoelectric gain. The mid-infrared detection array is constructed on a flexible insulating substrate and includes a plurality of pixel units arranged in a periodic array. From bottom to top, each pixel unit includes: a gate, an insulating layer, a source, an active layer, and a drain. The active layer includes a lead selenide thin film, a two-dimensional molybdenum disulfide layer, and a black phosphorus quantum dot layer sequentially covering the source. Both the source and drain are interdigitated and symmetrically staggered in planar projection. The mid-infrared detection array of this invention can achieve flexible switching between fast response and high gain modes to meet the detection requirements of both high-frequency transient and low-frequency slowly varying signals, while improving the detection sensitivity of mid-infrared signals, reducing noise and dark current, and reducing the power consumption of the device.

This utility model relates to the field of detector technology, and provides a lead selenide detector with an independent heat dissipation structure. It includes a detector body, with heat dissipation mechanisms fixed to the outer walls of both sides of the detector body. A mounting plate is fixed to the bottom of the detector body, and a support plate is fixed to the bottom of the mounting plate. Disassembly and assembly structures are fixed to both sides of the bottom of the support plate. Each disassembly and assembly structure includes disassembly and assembly seats fixed to both sides of the bottom of the support plate. Connecting blocks are engaged at the bottom of each disassembly and assembly seat, and fixing bolts are threaded to both sides inside each disassembly and assembly seat. This utility model, by providing a disassembly and assembly structure, allows for easy connection of the connecting blocks and disassembly and assembly seats with the help of the fixing bolts. This enables the probe to be installed and disassembled via the connecting blocks, thus achieving the function of easy probe installation and disassembly, and improving the convenience of the lead selenide detector in use.

This utility model relates to the field of lead selenide detector technology, specifically a lead selenide detector with adjustable focal length. It includes an instrument body and a base for mounting the instrument body. Two retainers are fixedly connected to the top of the base, and the instrument body is installed within the retainers. A movable plate is slidably mounted on the top of the base, and a placement frame is fixedly connected to the top of the movable plate away from the instrument body. A lens assembly is housed within the placement frame. This utility model features retainers, a movable plate, a placement frame, and a lens assembly. The lens assembly and the placement frame are connected by a plug-in joint, enabling the lens assembly to be detachable and replaceable. This allows for the replacement of lenses of different specifications according to different usage requirements, thereby adjusting the detector's focal length. Simultaneously, adjusting the distance between the lens body and the instrument body also changes the focal length of the instrument body. Furthermore, the retainers and placement frame provide a stable support structure for the instrument body and the lens assembly.