The problem is covering a rectangular sensor chip with a circle of light from the lens.

问题在于要用镜头上的光圈盖住传感器芯片。

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The design of the miniature visible light monochrome CCD camera using the chip of ICX259AL image sensor made in SONY was presented.

介绍了采用SONY的ICX259AL图像传感器芯片的小型可见光黑白CCD相机的设计。

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Introduced the application of humidity and brightness sensor in neon light controller system based on EM78P447SB micro-chip computer.

介绍了基于EM78P447SB单片机、集成湿度传感器、亮度传感器、钟控开关和自制光电耦合器制作的积木式霓虹灯控制系统。

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For cellphones equipped with cameras, the light-capturing sensor chip is a matrix of 1, 000-by-1, 000 pixels or more.

FORBES: Magazine Article

That might be about to change, though, as South Korea's state-owned Korea Electronics Technology Institute has announced a new image sensor chip that promises to take "vibrant photos" in extreme low-light conditions -- all the way down to 1 lux, which is the equivalent light output of a candle shining one meter away.

ENGADGET: South Korean image-sensing chip enables 1-lux photography