Schematic of instrument
1. Laser, 2. Beam expander 3. Beam splitter assembly, 4. Whiteboard 5. Dial disk, 6. Battery box
Principle of vision correction
Features
47 experimental demos
Cost effective solution
Detailed instructional manual
Easy alignment
Introduction
The LEOK-7 Laser Optical Demonstration Instrument is developed as a low-cost solution to lower class optical education at universities and colleges. It provides a complete set of optical and mechanical components as well as a light source.
A laser beam emitted from a diode laser is expanded by a cylindrical lens, and is further split into three equally intense beams by a beam splitter assembly. The position and direction of each beam can be adjusted independently from other beams as viewed on a white board. A rotational disk with angular scales is located at the center of the board with a hole in the disk center for mounting various optical components. By inserting various components into the optical path, numerous optics experiments can be demonstrated covering ray optics, imaging optics, and optical instruments. A list of 47 experimental demos can be conducted as follows: | |
1. Rectilinear propagation of light rays 2. Independent propagation of light rays 3. Law of light reflection 4. Beam expansion by a convex lens 5. Beam expansion by a cylindrical lens 6. Beam splitting by a beam splitter 7. Light reflection at a boundary of two media 8. Real image formed by convergent rays 9. Virtual image formed by divergent rays 10. Beam deflection by plane mirror 11. Imaging properties of a double mirror 12. Diffuse reflection of light 13. Law of light refraction 14. Total internal reflection of light 15. Applications of total internal reflection 16. Principle of periscope 17. Minimum deviation angle of prism 18. Displacement of rays through a parallel plate 19. Propagation of light through optical fiber 20. Convergence of light by concave mirror 21. Self-tracing of light by concave mirror 22. Imaging of concave mirror (object distance >2f') 23. Imaging of concave mirror (object distance f'~2f') 24. Imaging of concave mirror (object at focal plane) |
25. Imaging of concave mirror (distance < f') 26. Divergence of light by convex mirror 27. Self-tracing of light by convex mirror 28. Imaging of convex mirror 29. Rays passing nodal point of convex lens 30. Demonstrating focal point in object space 31. Light focusing by a convex lens 32. Principle of camera 33. Reversed imaging of unit magnification 34. Principle of projector 35. Principle of collimator 36. Principle of magnifier 37. Imaging of convex lens 38. Imaging of convex lens 39. Imaging of convex lens 40. Imaging of convex lens 41. Imaging of convex lens 42. Divergence of light by concave lens 43. Imaging of prism 44. Principle of Galilean telescope 45. Imaging of Galilean telescope 46. Principle of nearsighted vision correction 47. Principle of farsighted vision correction |
*Please click to view some sample pages of the instruction manual.
Part List
| Main unit | Incl a diode laser (powered by 3 AA batteries), beam expander, beam splitter, whiteboard, dial disk, etc. | |
Accessories | Right angle prism | Double plane mirror |
| Equilateral prism | Semi-cylindrical lens | |
| Concave-convex cylindrical mirror | Beam expander lens | |
| Diffuse reflector | Plastic optic fiber | |
| Plane parallel plate | Plane mirror | |
| Bi-convex cylindrical lens | Plano-concave cylindrical lens | |
| Galilean telescope | Periscope | |
| Plano-convex cylindrical lens | PDF manual | |
Schematic of instrument
1. Laser, 2. Beam expander 3. Beam splitter assembly, 4. Whiteboard 5. Dial disk, 6. Battery box
Principle of vision correction
