FIELD: measuring equipment.
SUBSTANCE: invention relates to optical measuring systems. Device for measuring the radius of curvature of a concave optical spherical surface with spaced branches comprises a point source, an optical system of a measuring part, which includes a beam splitter and a wave front sensor. Device includes an additional beam-splitting element, by means of which the point source is carried outside the optical system of the measuring part, is located in front of the measuring part of the device and is aligned with the focus of the nozzle of the device. Additional beam-splitting element is located between the nozzle focus and the measured optical part and moves relative to the curvature center of the measured part together with the measuring part of the device.
EFFECT: reduced error of measurement of radii of curvatures of concave optical parts.
1 cl, 1 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD AND DEVICE FOR DIFFERENTIAL DETERMINATION OF THE RADIUS OF CURVATURE OF LARGE-SIZED OPTICAL PARTS USING THE WAVEFRONT SENSOR | 2017 |
|
RU2667323C1 |
| DEVICE AND METHOD OF DETERMINING CURVATURE RADIUS OF LARGE-SIZED OPTICAL PARTS ON BASIS OF WAVEFRONT SENSOR | 2016 |
|
RU2623702C1 |
| INTERFEROMETER FOR CONTROLLING THE SHAPE OF CONVEX HYPERBOLIC MIRRORS | 2017 |
|
RU2649240C1 |
| 0 |
|
SU373519A1 | |
| INTERFERROMETER FOR CHECKING SPHERICAL SURFACES | 0 |
|
SU953451A2 |
| DIFFRACTION INTERFEROMETER | 2003 |
|
RU2240503C1 |
| INTERFEROMETER FOR CONTROL OF THE FORM OF DIFFERENT SURFACES OF LARGE-SIZED OPTICAL PARTS | 2017 |
|
RU2663547C1 |
| INTERFEROMETER FOR CONTROLLING CONCAVE ASPHERIC SURFACES | 0 |
|
SU1728650A1 |
| METHOD AND DEVICE FOR INTERFEROMETRIC MEASURING OF SHAPE DEVIATION OF OPTICAL SURFACES | 2002 |
|
RU2263279C2 |
| METHOD OF RESTORING THE SHAPE OF THE ASPHERICAL SURFACE OF AN OPTICAL PART BASED ON THE PARAMETERS OF THE REFLECTED WAVEFRONT, OBTAINED BY INSTRUMENTS WITH WAVEFRONT SENSORS (WFS) | 2019 |
|
RU2715434C1 |
