Setup of measuring the refractive index of air

Setup of recording and reconstructing holograms

Setup of assembling a Littrow-type grating spectrometer

Setup of analyzing polarization status of light beams

Setup of determining the nodal locations & measuring the focal length of a lens-group

The LEOK-3 Optics Experiment Kit is developed for general physics education at 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 setups, students can enhance their experimental skills and problem solving ability. The instruction manual contains comprehensive materials including experiment setups, principles, procedures and required parts with photos. 

LEOK-3 shows a total of 26 experiment examples which are grouped in six categories:

Lens Measurements: Understand and verify lens equation and optical rays transformation.
Optical Instruments: Understand the principle and operation of common lab optical instruments.
Interference Phenomena: Understand interference theory, observe various interference patterns generated by different sources, and learn one precise measurement method based on optical interference. 
Diffraction Phenomena: Understand diffraction effects, observe diffraction patterns by different apertures. 
Analysis of Polarization: Understand polarization and verify types of polarized light.
Fourier Optics and Holography: Understand principles of advanced optics and their applications.

The list of the 26 experimental examples is as follows:

1. Measure lens focal length using auto-collimation

2. Measure lens focal length using displacement method

3. Measure the focal length of an eyepiece

4. Assemble a microscope

5. Assemble a telescope

6. Assemble a slide projector

7. Determine the nodal locations & focal length of a lens-group

8. Assemble an erect imaging telescope

9. Young's double-slit interference

10. Interference of Fresnel's biprism

11. Interference of double mirrors

12. Interference of a Lloyd's mirror

13. Interference-Newton's rings

14. Fraunhofer diffraction of a single slit

15. Fraunhofer diffraction of a circular aperture

16. Fresnel diffraction of a single slit

17. Fresnel diffraction of a circular aperture

18. Fresnel diffraction of a sharp edge

19. Analyze polarization status of light beams

20. Diffraction of a grating

21. Assemble a Littrow-type grating spectrometer

22. Record and reconstruct holograms

23. Fabricate a holographic grating

24. Abbe imaging and optical spatial filtering

25. Pseudo-color encoding, theta modulation and color composition

26. Assemble a Michelson interferometer and measure the refractive index of air