On the basis of thin-lens focal length measurement experiment, the imaging law of refraction-reflection system was further studied.

在薄透镜焦距测定实验的基础上，进一步讨论了折射反射系统成像的规律。

youdao

Generally I pay for the highest level of non-glare coatings and I usually pick the middle of the thin-lens options (my personal prescription rules out the thinnest, lightest lenses).

我一般选择最高级的防辐射镀膜镜片，并且挑选中薄的(我的个人验光处方上规定最薄最轻的镜片)。

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On account of four distortions such as signal lag, radial distortion, eccentric distortion and thin lens, etc. a precision distortion correction model is established.

新模型考虑了信号滞后、径向、偏心和薄透镜等四种畸变，建立了精确的畸变矫正模型。

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Both models maintain their slim profiles by incorporating an ultra-thin 4x optical zoom lens with folded optics.

ENGADGET: Panasonic announces Lumix GF2 pricing and availability, plenty of other models too

Despite the 22x zoom lens, the camera was very thin and light -- it should be able to tuck into a pocket just fine.

ENGADGET

So... hyperbole aside, the FX30 is thin and features a 3.6x LEICA DC VARIO-ELMARIT optical zoom lens, 7.2 megapixel CCD, Mega OIS optical image stabilization, Venus Engine III image-processing for shooting at ISO 1250, and a 2.5-inch 207k pixel LCD (the L74 throws down 230k pixels) with "Power LCD" to boost brightness by 40% (at the expense of battery life) when outdoors.

ENGADGET: Panasonic's DMC-FX30 wide-angle 7.2 megapixel shooter: not quite the world's slimmest