The main purpose of the optical tool disk is for various demonstrations of geometric optics. Its structure has a rectangular light screen, which is painted white to facilitate the display of the light path. There is a scale on the upper edge, each division is 8cm. It is surrounded by light-shielding panels and the interior is painted black. Chrome-plated metal rods are used to hang optical components. The circular light screen is painted white and has scales on the edges, with each division being 10 degrees. It can be hung on a metal rod and rotate freely, and can be removed when not in use. The spring is clamped on the circular light screen to hold the optical element. The shading inserts can be inserted into the six rectangular slits on the shading plate (except for the middle one) to change the number of light rays. When the red and blue color filters are inserted into the rectangular slit of the light shield, three red and blue light rays can be generated, and the center is still white light. There are six round holes on the reflector frame, which can be used to install reflectors. The reflector can reflect the light incident from the rectangular hole through the mirror surface. When the reflector is rotated, light can be directed to the light screen in various directions. The remaining optical components attached are: a scalene pentagonal glass brick; an isosceles right-angle prism; a semi-cylindrical glass brick; a large and small biconvex cylindrical lens (focal lengths are 16 and 8cm respectively); a biconcave A cylindrical lens with a focal length of 8cm; a concave cylindrical mirror with a focal length of 16cm; a plane mirror (with bakelite frame). Each optical element has a special frame or is fixed on the light screen using a spring clip on the circular disc.

Use a strong parallel light source to illuminate the rectangular slit of the optical tool plate. Adjust the position of the light screen appropriately to display seven clear parallel rays. By placing optical components and accessories (shading plates, color filters, etc.) according to the requirements of the experiment, you can do a variety of experiments. For example, if the laser beam passes through a beam expander lens with a short focal length (about 5~10mm) and is used as a parallel light source, the effect will be better.

The optical disk can be used for various experiments such as light reflection, refraction, mirror and lens imaging, etc.