aperture lens

基本解釋

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)
一支大孔徑鏡頭（這里用的是一支佳能 50mm F1.8,但是如果使用尼康的 50mm F1.8效果也是一樣的，一支上乘的尼康 50mm F1.4會產生更好的效果。）
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.
它的大光圈鏡頭可以攝入盡可能大的光量，所用技術并不需要笨重的自動對焦系統(tǒng)，曝光時間也是自動調節(jié)。
Intensity distribution of the partially coherent Bessel vortex beams focused by an aperture lens is investigated.
研究了部分相干貝塞爾渦旋光束通過光闌-透鏡系統(tǒng)聚集后的光強分布。

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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