Optical lever

Abstract

The invention discloses an optical lever. The optical lever comprises a rotating shaft, a reflecting mirror lining plate, a plane completely reflecting mirror, an adjusting screw nut, a pedestal, an optical lever front leg, an optical lever rear leg, a spring and a C-shaped support. The C-shaped support is fixed at the middle part of the pedestal, the optical lever front leg and the optical leverrear leg are respectively arranged at the two ends of the pedestal, the rotating shaft is arranged at one side of the upper end of the C-shaped support, the other side of the rotating shaft is connected with the reflecting mirror lining plate, and the reflecting mirror lining plate can rotate around the rotating shaft; the adjusting screw nut is arranged at the tail of one end, not connected withthe rotating shaft, of the reflecting mirror lining plate, the adjusting screw nut is connected with the C-shaped support by virtue of the spring, and inclination of the reflecting mirror lining platecoordinates with location and change by utilizing the adjusting screw nut and the spring; and the back (non-reflecting surface) of the plane completely reflecting mirror is pasted on the reflecting mirror lining plate by virtue of double sides bubble glue. The optical lever disclosed by the invention has the characteristics of imaging clearly, easily adjusting and being difficult to fall down andcan completely replace the old-fashioned optical lever to be used.

Description

technical field [0001] The invention relates to an optical lever, which is a device capable of amplifying and measuring small variables. It is often used to measure small deformations of metal materials, paper thickness, etc., and is also a classic experimental device in physics experiment teaching in colleges and universities. Background technique [0002] The optical lever is a device that can amplify and measure small variables. For example, the optical lever magnification method is used to measure the deformation of the metal wire when it is subjected to a certain tension. Force deforms the metal wire; the front leg of the light lever is placed on a fixed platform, the front leg is the fulcrum of the light lever, the rear leg is connected to the lower end of the metal wire, and the rear leg of the light lever will deform with the force of the metal wire When moving up and down, the light lever will rotate with the forefoot as the fulcrum, and the plane mirror on the leve...

AI Technical Summary

Problems solved by technology

However, the current optical lever has disadvantages. First, the plane reflector is easy to be clamped and deformed, which affects the flatness of the reflective surface, resulting in blurred scales seen from the telescope. Even adjusting the focal length of the telescope cannot solve the problem; second, The inclination of the plane reflector cannot be finely adjusted; third, the light lever is easy to fall forward and fall to the ground, causing the plane reflector to break

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