Traditional Culture Encyclopedia - Photography and portraiture - What is an optical photographic instrument?
What is an optical photographic instrument?
Optical instruments are composed of single or multiple optical devices. Optical instruments are mainly divided into two categories: one is optical instruments that form real images, such as slide projectors and cameras; The other is optical instruments that form virtual images, such as telescopes, microscopes, magnifying glasses, etc. Optical instruments are very important in instrument industry, and they are indispensable tools for observation, testing, analysis, control, recording and transmission in industrial and agricultural production, resource exploration, space exploration, scientific experiments, national defense construction and social life. In particular, the function of modern optical instruments has become the extension and expansion of human brain function. With the increasing demand for downstream applications, the market scale of domestic optical instrument manufacturing industry has also shown a rapid expansion trend in recent years. By the end of 20 10, there were 395 enterprises above designated size in China's optical instrument manufacturing industry. In 20 10, 30,085,300 optical instruments were produced nationwide, up by 25.45% year-on-year, with an increase of 35.99 percentage points over the same period of last year. During the year, the sales revenue of the whole industry reached 5365438+67 million yuan, a year-on-year increase of 19.26%. In China optical instrument market, the entry and success of multinational companies has become an indisputable fact, and internationally renowned manufacturers have entered the China market one after another. Although some domestic enterprises have gradually emerged and occupied a leading position in the optical instrument manufacturing market, most of them have poor research and development capabilities, and high-end products are still at a technological disadvantage compared with their foreign counterparts.
Optical instrument is an instrument that can generate light waves and display images, or receive light waves and analyze and determine their optical properties. Optical instruments are very important in instrument industry, and they are indispensable tools for observation, testing, analysis, control, recording and transmission in industrial and agricultural production, resource exploration, space exploration, scientific experiments, national defense construction and social life. In particular, the function of modern optical instruments has become the extension and expansion of human brain function.
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