The LEOK-7 Laser Optical Demonstration Instrument is developed for light and optics education at universities and colleges. It provides a complete set of optical and mechanical components as well as light sources. A He-Ne laser beam diverges into a sector shape after passing through a cylindrical lens, and projects onto an viewing screen. By inserting proper optical components into the optical path, numerous geometric- and physical-optics experiments can be demonstrated. No darkroom is needed.
Below is a list of 64 experiment examples:
1.Straight line propagation of light ray
2.Independent propagation of light ray
3.Reflection law of light
4.Beam expansion by using positive and negative lenses
5.Beam expansion by using a cylindrical lens
6.Beam splitting by using a beam splitter
7.Beam splitting by using a grating
8.Light reflection from the interface of two media
9.Form real image from convergent rays by a flat mirror
10.Form virtual image from divergent rays by a flat mirror
11.Relation of angle change between reflected rays & mirror
12.Imaging property of dual flat mirrors
13.Disfuse reflection of light
14.Light refraction, refraction law and reversibility
15.Total reflection and critical angle
16.Applications of total reflection
17.Principle of periscope
18.Minimum defection angle & measuring refractive index
19.Measuring shift of light passing through a plate
20.Principle of fiber light guide
21.Measuring focal point & focal length of a concave mirror
22.Rays passing the spherical center of the concave mirror
23.Imaging of object distance larger than two focal length
24.Imaging of object distance between 1-2 focal length
25.Imaging of object locating on focal plane
26.Imaging of object locating within one focal length
27.Rays diverging of a convex mirror & measuring focal length
28.Rays passing the spherical center of the convex mirror
29.Imaging property of a convex mirror
30.Rays passing through the nodal point of a lens
31.Demo the focal point in object space of a lens
32.Measuring focal length of a convex lens
33.Imaging principle of a camera
34.Imaging principle of a -1x inverting system
35.Principle of a projector
36.Principle of a parallel beam tube
37.Imaging principle of a magnifier
38.Virtual image locating within focal length
39.Virtual image locating on focal plane
40.Virtual image locating at 2x focal length
41.Virtual image locating beyond 2x -focal length
42.Virtual image locating at infinite distance
43.Measuring focal length of a negative lens
44.Real object imaged through a prism
45.Principle of a Kepler telescope
46.Imaging of an object by Kepler telescope
47.Principle of a Galileo telescope
48.Imaging of an object by Galileo telescope
49.Principle of a microscope
50.Correction principle of a myopic eye
51.Correction principle of presbyopia
52.Young’s double-slit interference
53.Interference through a wedge
54.Diffraction of a single slit
55.Diffraction of double-slit
56.Diffraction of triple-slit
57.Diffraction of tetrad-slit
58.Diffraction of a grating
59.Diffraction of a circular aperture
60.Diffraction of a square aperture
61.Diffraction of a rectangular aperture
62.Diffraction of a triangular aperture
63.Generating and checking polarization
64.Newton’s ring