The LEOK-3 Optics Experiment Kit is developed for general physics education in universities and colleges. It provides a complete set of optical and mechanical components as well as light sources. Almost all optics experiments required in general physics education (e.g. geometrical, physical, and modern optics) can be constructed in sequence using these components. Through selecting and assembling corresponding components into the setups by students themselves, their experimental skills and problem solving ability can be greatly enhanced.
The instruction manual contains comprehensive materials including experiment setup, principle, procedures and required parts with photos. 
LEOK-3 can be used to construct a total of 26 different experiments which can be grouped in six categories:
Lens Measurements: Understanding and verifying lens equation and optical rays transform.
Optical Instruments: Understanding the working principle and operation method of common lab optical instruments.
Interference Phenomena: Understanding interference theory, observing various interference patterns generated by different sources, and grasping one precise measurement method based on optical interference. 
Diffraction Phenomena: Understanding diffraction effects, observing various diffraction patterns generated by different apertures. 
Analysis of Polarization: Understanding polarization and verifying types of polarized light.
Fourier Optics and Holography: Understanding principles of advanced optics and their applications.