HOLOGRAPHIC DEVICE FOR MEASURING THE CURVATURE RADIUS OF SPHERICAL SURFACES Russian patent published in 2021 - IPC G01B11/255 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measuring equipment and can be used in optoelectronic instrumentation for measuring the radii of curvature of the spherical surfaces of optical parts. A holographic device for measuring the radii of curvature of spherical surfaces contains a control device with a monochromatic point light source, an autocollimator installed with the ability to move along the optical axis, an exemplary optical element installed along the path of the beams and made in the form of an axial reflective synthesized hologram, and the exemplary optical element is located coaxially with an autocollimator in the object holder, which is installed with the ability to move along the optical axis of the autocollimator and is mechanically connected to a linear displacement meter, and a sensitive probe. The device additionally contains a unit for adjusting the position of the best installation plane (BIP) of the exemplary optical element and the controlled optical part, installed on the object holder, while the sensitive probe is installed with the possibility of its output beyond the light diameter of the autocollimator, and the geometric axis of the unit for adjusting the position of the BIP coincides with the geometric axis sensitive probe and optical axis of the autocollimator.

EFFECT: use of the invention makes it possible to reduce the time for measuring the radius of curvature of the spherical surface of the controlled optical part.

5 cl, 8 dwg