A plano concave lens is an optical lens with one concave surface and one plane surface. It has a negative focal length, and can be used for light projection, beam expansion, or to increase focal length of an optical system. Plano Concave Lens,Plano Concave Lenses,Lenses Optical,Microscopy Optics Changchun Realpoo Photoelectric Co., Ltd. , https://www.optics-realpoo.com
Plano-concave lenses diverge a collimated beam from a virtual focus and are commonly used in Galilean-type beam expanders. Given their negative focal length and negative spherical aberration, plano-concave lenses can be used to balance out aberrations of other lenses in the system. Realpoo Optics provides plano-concave lenses fabricated from N-BK7, N-SF11, UV-fused silica, calcium fluoride, and zinc selenide etc.
No leakage design diaphragm pump structural features
Leak-less Design Diaphragm Pumps Structural Features Leak-Free Design The diaphragm pump first distinguishes between a plain rotor pump and a reciprocating diaphragm pump with a planar peristaltic rigid support ring and an annular diaphragm. In addition, the existing diaphragm pump uses a sheet of diaphragm to separate the conveying medium and the working medium, and uses a reciprocating crank connecting rod mechanism, a three-valve mechanism, and an inlet and outlet valve groups; the diaphragm pump absorbs a hose pump and a flexible diaphragm pump And other features of the rotor pump, the rotary drive mechanism and diaphragm organic combination of the novel structure, with a diaphragm to separate the transmission medium and drive components, the transmission medium can not be leaked to the outside. The diaphragm pump is mainly composed of a pump body, an isolation mechanism, a rigid support ring, an annular diaphragm, a bearing sleeve, a bearing, a transmission shaft, a floating pressure ring and a pump cover; the end of the diaphragm is axially compressed by a bearing cap Fixed, and the pump cover, rigid support ring, the pump body to form a closed volume, when the drive shaft rotates, with the inlet and outlet isolation mechanism and the rigid support ring, the pump body to form liquid suction and drainage chamber to achieve a leak-free delivery medium the goal of. The main structural features of the diaphragm pump are as follows: (1) a flat peristaltic rigid support ring is arranged between the diaphragm and the pump body; (2) a floating pressure ring is built in the annular diaphragm; (3) the annular diaphragm separates the conveying medium and the lubricating medium; (4) annular diaphragm pump exclusive combination of import and export isolation mechanism; (5) without the end of the valve and import and export of valve groups; (6) a unique axial seal structure; (7) rigid support ring and the shaft between the bearings.