Wavefront sensor, and lens meter and active optical reflecting telescope using the same
First Claim
1. A wavefront sensor comprising:
- a plurality of lenses disposed in the same plane; and
an area sensor which receives a bundle of rays of light collected through each of said lenses as a luminous point, wherein the wavefront sensor measures wavefront shape of a light beam incident to said lenses based on the position of the luminous points on said area sensor, characterized by each of said lenses;
comprises a plurality of concentric areas with different focal length and said area sensor is located substantially halfway between a first position in which a plane wave forms an image after passing through one of said concentric areas with a minimum focal length, and a second position in which the plane wave forms an image after passing through another area with a maximum focal length.
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Abstract
A wavefront sensor includes a plurality of lenses disposed in the same plane, and an area sensor that receives a bundle of rays of light collected through each of the lenses as a luminous point. Each of the lenses comprises a plurality of concentric areas with different focal lengths, and the area sensor is located substantially halfway between a first position in which a plane wave forms an image after passing through one of the concentric areas with a minimum focal length, and a second position in which the plane wave fronts an image after passing through another area with a medium focal length. With the wavefront sensor thus arranged, the measurement can be always achieved with high accuracy without involving noticeable blurring of luminous points on the area sensor regardless of the wavefront shape of a light beam indent to the lenses.
37 Citations
30 Claims
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1. A wavefront sensor comprising:
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a plurality of lenses disposed in the same plane; and
an area sensor which receives a bundle of rays of light collected through each of said lenses as a luminous point, wherein the wavefront sensor measures wavefront shape of a light beam incident to said lenses based on the position of the luminous points on said area sensor, characterized by each of said lenses;
comprises a plurality of concentric areas with different focal length and said area sensor is located substantially halfway between a first position in which a plane wave forms an image after passing through one of said concentric areas with a minimum focal length, and a second position in which the plane wave forms an image after passing through another area with a maximum focal length.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification