“collimator”的概念、定义、翻译、参考文献-科学参考

collimator

Physics

1. Any device for producing a parallel beam of radiation. A common arrangement used for light consists of a convex achromatic lens fitted to one end of a tube with an adjustable slit at the other end, the slit being at the principal focus of the lens. Light rays entering the slit leave the lens as a parallel beam. Collimators for particle beams and other types of electromagnetic radiation utilize a system of slits or apertures.

2. A small fixed telescope attached to a large astronomical telescope to assist in lining up the large one onto the desired celestial body.

Astronomy

A device, usually a lens, for producing a parallel beam of light. In a spectroscope, the collimating lens collects light from the slit, which is at its focal point, and passes it as a parallel beam on to the full width of the prism or grating. Alternatively, a collimator may produce a parallel beam of light for testing an instrument. See also collimation.

单词	collimator
释义	collimator Physics 1. Any device for producing a parallel beam of radiation. A common arrangement used for light consists of a convex achromatic lens fitted to one end of a tube with an adjustable slit at the other end, the slit being at the principal focus of the lens. Light rays entering the slit leave the lens as a parallel beam. Collimators for particle beams and other types of electromagnetic radiation utilize a system of slits or apertures. 2. A small fixed telescope attached to a large astronomical telescope to assist in lining up the large one onto the desired celestial body. Astronomy A device, usually a lens, for producing a parallel beam of light. In a spectroscope, the collimating lens collects light from the slit, which is at its focal point, and passes it as a parallel beam on to the full width of the prism or grating. Alternatively, a collimator may produce a parallel beam of light for testing an instrument. See also collimation.
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