1、

According to the theory of optical compensated zoom, author designed optical compensated step zoom lenses.

根据光学补偿变焦距理论,作者设计出光学补偿式步进变焦物镜。

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2、

Compared with fixed focus lenses, zoom lenses have variable magnification without adjusting their position so that they can image with different resolution and enhance effectively their target detection efficiency.

与定焦镜头相比,变焦镜头的放大倍率可变,无需调整光学系统的位置便可以不同分辨率对目标成像,能有效提高探测效率。

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3、

Concerning the Vignetting Coefficients in the Optimization Design of Zoom Lenses

关于变焦系统优化过程中渐晕系数问题的讨论

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4、

When using dedicated attachments in macro and wide-angle filters and lenses, you need to zoom out to avoid the "black circle" that will appear on the corners of your frame.

如果你用外置镜头比如微距或者广角,就不要用光学变焦,要不然会得到周围的暗角效果。

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5、

According to the comprehensive evaluation of the final optical system, this structure could achieve the requirements of large field zoom lens in the digital camera. All the lenses composing the zoom system are spherical lens, so the production cost could be reduced effectively.

评价结果表明,这种结构形式可以实现大视场要求的数码相机变焦距物镜设计,组成系统的全部镜片都为球面透镜,使加工变得容易,降低生产成本。

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6、

to pass off the trickery the married couple, both professional snappers, use macro lenses to zoom up close on the surface of the food

为了顺利完成他们的想法,这对专业摄影师夫妇使用了微距镜头在近食物表面进行拍摄

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