Position measurement system
First Claim
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1. A position measurement system comprising:
- a light source;
an optical lens system which transmits light from the light source and forms an area of light concentration due to its spherical aberration;
a light receiving device which detects the area of light concentration as formed by the optical lens system; and
a calculator which measures a position of the light source according to detected information on the area of light concentration as detected by the light receiving device.
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Abstract
A position measurement system optically measures a position of an object in a simple manner at low cost. The position measurement system includes: a light source; an optical lens with a large spherical aberration which transmits light from the light source and forms a light ring due to its spherical aberration; a light receiving device (CCD sensor) which detects the light ring as formed by the optical lens; and a calculator which measures a position of the light source according to detected information on the light ring as detected by the CCD sensor. An optical mirror with a large spherical aberration may be used instead of the optical lens.
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Citations
20 Claims
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1. A position measurement system comprising:
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a light source; an optical lens system which transmits light from the light source and forms an area of light concentration due to its spherical aberration; a light receiving device which detects the area of light concentration as formed by the optical lens system; and a calculator which measures a position of the light source according to detected information on the area of light concentration as detected by the light receiving device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17)
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11. A position measurement system comprising:
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a light source; an optical mirror system which reflects light from the light source and forms an area of light concentration due to its spherical aberration; a light receiving device which detects the area of light concentration as formed by the optical mirror system; and a calculator which measures a position of the light source according to detected information on the area of light concentration as detected by the light receiving device. - View Dependent Claims (12, 13)
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18. A position determining system comprising:
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a light source for emitting a light; an optical system having a spherical aberration wherein the spherical aberration forms a concentrated area of the light; a detector that detects an information corresponding to the concentrated area; and a calculator that determines a position of the light source based on the information. - View Dependent Claims (19, 20)
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Specification