A new technique to measure the radius of a concave mirror is proposed, in which the radius is calculated from the difference of the two interferograms obtained before and after shifting the sample perpendicular to or along the optical axis. By comparison of these two shifting directions, it is...
We describe the accurate measurement of the radius of curvature of a concave mirror in a Fabry-Perot interferometer with a finesse of 78,100. The radius of curvature of the concave mirror is determined by measuring the free spectral range and the transverse-mode range with the frequency response...
The radius of curvature of a concave (make-up) mirror is 120 cm. How far must a person's face be located in front of the mirror so that her image is upright and four times the real size? What is the equation for displacement a...
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We propose a differential interferometer to measure the radius of a concave mirror, in which two phase distributions of the interferograms are measured before and after shifting the concave mirror perpendicular to or along the optical axis, and the radius is calculated from the difference of these ...
The optical mirror system comprises a concave mirror (2) with relatively large curvature radius (R), a convex mirror (1) with relatively small radius, which coaxially faces the concave mirror, and an aperture (S) which defines an object point (O) and an image point (I) at a given ...