FGY-01 Spectrometer with optical glass graduated circle and vernier, possesses the following advantages: convenient to take reading, high precision, steady structure, light and convenient manipulation, long adjusting range and serve multi-purpose. It is suitable for laboratory experiment in institutions of higher education and for goniometric works in scientific research units and factories.

Application

1. Determination of prism angle and angles between specular surfaces;

2. Measurement of the angle of refraction of prisms;

3. Determination of the angle of minimum deviation and index of retraction of transparency;

4. Measurement of wavelength;

5. Determination of dispersion of prism.

Technical Data

Autocollimating Telescope:

1.        Objective, focal length      168mm

2.        Objective, effective apertureФ22mm

3.        Eyepiece, focal length  24.3mm

^4.          Magnification        7^x

Collimator:

1.        Objective, focal length      168mm

2.        Objective, effective apertureФ22mm

3.        Slit, adjusting range   0~2mm

Optical graduated circle:

1.        Graduated circle scale range    0~360

2.        Vernier scale reading  30"

Construction

   The central axle is a semi-rolling cylindrical axle system, with high precision and automatic centering. The graduated circle and vernier are mounted on the axle and rotate with it together (may also be coupled with the object stage). The telescope is coupled with the vernier and rotate with it together. Both the graduated circle and vernier are equipped with fine adjusting screws and locking device so as to achieve fine adjustment.

    The optical system is composed of Abbe type autocollimating telescope, variable slit collimator and graduated circle and vernier with illuminating telescope is normal to a reflecting mirror, the green cross will be oriented at a given distance from the central cross wire. Move the eyepiece to and fro so as to put the graticule in focus.