Image formation with lenses, pinholes and slits in an optical box

Abstract

Images formed by systems with small apertures, such as pinholes and slits, have very weak illumination. It is advisable an object with a high luminance and with considerable size to see these images. Besides, the device that performs the image must be solid and stable. In this work, a wooden box has been designed to obtain these images and to see them comfortably. In order to illuminate the object intensely, an LED ceiling light has been used. Images with slits and pinholes have been formed in the box. Geometrical relationships between the object and image sizes have been established and theoretical and experimental resolutions for different pinholes have also been compared. The device has also been used to form images with lenses and compare them with those formed by pinholes.