Suitable for aspheric lens polishing technology

Magnetorheological finishing (MRF) is a new kind of machining technology which combines the theories of electromagnetism, analytical chemistry and fluid dynamics, the“Polishing grinding head” is a“Flexible polishing die” with visco-plastic characteristic, which is formed by magnetorheological fluid rheology in gradient magnetic field.

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Characteristics of off-axis three-mirror optical system

Off-axis three-mirror optical system is an advanced optical design, through the combination of three mirrors, high-resolution and wide-field imaging.

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Target detection and recognition range of optical system

Sometimes when we get an optical system design request, we may see the following criteria: target detection distance: ≥12 km and target recognition distance: ≥5 km. How does this index correspond to the parameters of the optical system? This paper will introduce this problem.

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Polarization Measuring Instrument

In the previous several articles, we have made a systematic introduction to the commonly used polarized optical elements. According to different functions, polarized optical elements can be divided into polarizer, retarder, compensator and depolarizer four categories.

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The Mirror of the Universe: a statics analysis of the large-aperture mirror

In the boundless universe, there is a special kind of“Eye” is staring at the Earth and the stars. They are space telescopes, which help us to understand the universe and explore the unknown world.

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