Holographic optical elements (HOE) can transform optical wave field.

全息光学元件能够完成光波场的转换。

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Selecting processing parameters is the key to increase polishing accuracy of optical elements.

提高光学零件研抛加工精度的关键是优选工艺参数。

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This paper would make a brief introduction about CAD design of optical elements for automotive lamps.

本文就用于汽车灯具光学元件CAD辅助设计做一些简单的介绍。

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CDM's imaging system, it passes first through conventional optical elements, and then through a lens moulded into a shape of a cubic-like function (ie, with a surface which, instead of being spherical, is relatively flat in the centre but has scalloped edges).

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Both include Balanced Optical SteadyShot, which moves the entire lens module (not just specific elements) for much more effective stabilization, especially when zoomed in.

ENGADGET: Sony Handycam PJ790V and PJ650V get brighter projectors with HDMI input, we go hands-on

"Theoretically if you construct the elements we've made at terahertz frequencies, make them even smaller and then scale them up to optical frequencies, you could have perfect lensing at those frequencies, " said co-author Dr Willie Padilla of the University of California, San Diego.

BBC: Last Updated: Monday, 8 March 2004, 09:03 GMT