The pinhole imaging manufacturing method is as follows:

1, the plastic film is covered on the paper cup mouth, and the rubber band is firmly fixed.

2. Pull it neatly and keep the plastic film flat.

3. The toothpick pokes a small hole in the bottom of the paper cup.

4. Put the candle in the tray and light it.

The hole in the bottom of the cup faces the candle.

6. Adjust the distance between the paper cup and the candle and keep it straight.

7, paper cup screen observation, see a clear image.