aperture lens

基本解释

One large aperture lens (a Canon 50mm F1.8 is used here, but Nikon 50mm 1.8 will also do, and the superb Nikon 50mm 1.4 will work even better)
一支大孔径镜头（这里用的是一支佳能 50mm F1.8,但是如果使用尼康的 50mm F1.8效果也是一样的，一支上乘的尼康 50mm F1.4会产生更好的效果。）
It has a wide-aperture lens to capture as much light as possible, and the technology requires no clunky auto-focus mechanism. It adjusts exposure time automatically.
它的大光圈镜头可以摄入尽可能大的光量，所用技术并不需要笨重的自动对焦系统，曝光时间也是自动调节。
Intensity distribution of the partially coherent Bessel vortex beams focused by an aperture lens is investigated.
研究了部分相干贝塞尔涡旋光束通过光阑-透镜系统聚集后的光强分布。

The camera's iHS technology and the large-aperture lens work together to deliver high-sensitivity, low noise and blazing auto-focus performance that translates to the highest image quality of any Olympus compact camera.
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Combined with the COOLPIX P7700's powerful CMOS sensor, this bright, large-aperture NIKKOR lens provides reduced noise, beautiful background blurring, fast performance and high image quality whether shooting stills or Full HD video.
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Its newly designed, large-aperture, 4x optical zoom lens (with the maximum aperture of F2.0 at wide-angle end), high-sensitivity, back-illuminated 16 megapixel CMOS image sensor, and sensor-shift Shake Reduction system ensure sharp, high-quality, low-noise images.
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