WHEC is a Sino-Japanese joint venture with 26-year experience of developing, manufacturing and selling contact image sensor(CIS), specializing in customization of CIS for machine vision system, AOI, surface inspection. ☆What is a Contact image sensor(CIS)? A CIS scanner is a compact line scan camera which is mounted directly above the object under inspection. It is the same type camera used in many fax or document scanners. The CIS consists of a row of silicon photodiodes, a graded index (GRIN) lens array and a light source. ☆What can a CIS do? Line scan, used in machine vision system for document processing, PCB inspection, web inspection, metal foil inspection, battery film inspection, cloth inspection, textile and apparel inspection, etc. ☆Why CIS? √More compact and simple to mount, only 5mm~20mm to scanning objects √Simple to adjust, resistant to vibration, no multi camera alignment problems √Constant picture angle over the total reading width √No distortion by the lens √Clearly sharper images ☆Why WHEC? √25-year experience of developing, manufacturing and selling CIS √Two R&D centers in Japan and one R&D center in China √Own factory with clean room, injection molding workshop and mechanic center √Only four-hour transportation to Qingdao Port √Independent overseas dept specially serve overseas customers √Certificated by ISO9001, ISO14001 and ISO10002