Name: Pinhole Camera: Construction
Uploaded: 2019-07-19
Duration: 3 min 18 s
Description: Pinhole cameras are image capturing boiled down to its absolute basics. Understand them, and you’ll know how any camera in the world captures light through a...

Question

Explain the construction and working of a pinhole camera with the help of an appropriate diagram.

Accepted Answer

A pinhole camera forms an image of an object as a result of rectilinear propagation of light.
Making a pinhole camera:
We need a piece of tracing paper, a thin needle, two tubes (about $30 cm$ long) and a piece of black chart paper. The width of the two tubes should be such that one fits into another and the two can slide one over the other, with no gap left between them.
Now, cover one end of the wider tube with a piece of black chart paper and make a small hole in its centre with the help of a needle or a pin as shown in the first figure. Cover one end of the smaller tube with a piece of tracing paper, as shown in the second figure. Carefully, slide the smaller tube into the wider tube, as shown in the third figure. The pinhole camera is ready to use.

A pinhole camera is a simple camera without a lens and with a single small aperture.

Working of a pinhole camera:
Light a candle and place it on a table. Hold the camera in front of the lighted candle so that the hole of the camera faces it. Look into the camera through its opposite end with one eye, keeping the other eye closed. You will be able to see an inverted image of the candle on the tracing paper which is working as the screen. You can slowly slide the inner tube in and out to make the picture more clear.

Explain the construction and working of a pinhole camera with the help of an appropriate diagram.

Important Questions on Light, Shadows and Reflections

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