Incremental Encoder is commonly used, and Absolute Encoder is used if there are strict requirements on position and zero position. Servo system should be analyzed in detail, depending on the application situation. Commonly used incremental encoder for speed measurement, which can be used for infinite accumulation measurement; Absolute encoder is used for position measurement, and the position is unique (single or multiple turns). Finally, it depends on the application situation and the purpose and requirements to be realized. Incremental Linear Encoders,Linear Optical Encoder,Linear Position Encoder,Encoder Bearing Tester Yuheng Optics Co., Ltd.(Changchun) , https://www.yuhengcoder.com
LG E2350V is LG Electronics' 2010 strategic product, with a thickness of only 17.5 mm and a dynamic contrast ratio of 5000000:1. It is the world's thinnest and highest-defining LCD monitor. According to market practice, the environmental certification of general institutions. It can be obtained only by the manufacturer after the production according to the standard, but the U.S. UL SPC certification needs to be strictly tested by the third-party testing organization for the product, material, performance and production process.
LG E2350V successfully passed the evaluation of a series of projects such as the use of hazardous substances, high-efficiency performance, product life extension, packaging and convenience, and corporate environmental protection work and achievements. The purpose is to eliminate and reduce certain harmful substances that cause harm to the environment and humans. LG uses more than 90% of the materials used to manufacture E2350V to be recycled, and the products themselves can be recycled after use, effectively reducing the filling. The number of materials and display packaging recovery rate also reached 90%. In addition, LG E2350V uses mercury-free LED backlight technology, renewable conductors and wooden packaging, and other world-class environmental protection and resource conservation. Technology. The power consumption of the product is reduced to more than 40% of the same model during use, and equipped with smart plus technology, which can automatically adjust the brightness of the display according to the ambient light, which can protect the user's vision and energy saving.
"We are committed to environmental sustainability research, better catering to electronic product development trends and meeting consumer needs is our direction." LG's US president James said: "Achieving UL environmental certification is equivalent to obtaining An important position in the minds of consumers and distributors;"
It is understood that LG E2350V will be listed in China in January 2010, the price has not yet been determined.; I believe that the world's first UL-certified LED display, performance in image quality and environmental applications is worthy of Chinese consumption Expected. 
LG Electronics recently announced that its E2350V LED backlight LCD display has become the industry's first UL Environmentally Friendly Product (SPC) certification through the world's most credible product safety testing and certification organization.