Lambda Scientific Pty Ltd products

Liquid crystal (LC) is an organic polymer compound that may flow like a liquid, but the molecules may be aligned in a crystal-like orientation. When LC molecules are aligned, the material becomes optically anisotropic. A LC screen is a spatial light modulator (SLM) based on the electro-optic modulation property of the LC material. This type of modulator is electronically addressable so that both input and output signals of the device can be computer-controlled. A LC-SLM can be used for optical signal processing, such as computed holography. It is suitable for optical experiment education in opto-electronic information, physics and other related areas.

According to the convolution theorem, the Fourier transform of the product of two functions equals the convolution of the two individual Fourier transforms of the two functions. On the contrary, the Fourier transform of the convolution of two functions is the product of the two individual Fourier transforms of the two functions. This experiment kit is designed to study the convolution theorem by optical means.

This experiment kit employs an optical correlation method for the spatial differentiation of an optical image, so that the image contour can be outlined with an enhanced contrast. Through this kit, students can get a better understanding of the principles of optical image differentiation, Fourier spatial light filtering, and 4f optical systems.