Missing lens detection system and method
First Claim
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1. An apparatus for detecting the presence or position of an ophthalmic product in a container, comprising:
- a) source of electromagnetic energy located relative to the container to direct electromagnetic energy at the container;
b) a non-imaging detector disposed relative to the container and the source to detect electromagnetic energy from the source which passes through or is reflected by the product and the container; and
c) means for indicating the presence or position of the product in the container responsive to fluorescence, absorption or reflection of the electromagnetic energy by the product.
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Abstract
A system for determining the presence and optionally the position of an ophthalmic product such as a contact lens in a container.
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Citations
24 Claims
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1. An apparatus for detecting the presence or position of an ophthalmic product in a container, comprising:
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a) source of electromagnetic energy located relative to the container to direct electromagnetic energy at the container;
b) a non-imaging detector disposed relative to the container and the source to detect electromagnetic energy from the source which passes through or is reflected by the product and the container; and
c) means for indicating the presence or position of the product in the container responsive to fluorescence, absorption or reflection of the electromagnetic energy by the product. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for detecting the presence or position of an ophthalmic product in a container, the product including a media which fluoresces, absorbs or reflects electromagnetic energy of a frequency in a specified range, the method comprising:
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(a) directing electromagnetic energy of a frequency in the specified range at the product and the container;
(b) detecting, without imaging, the electromagnetic energy which passes through or is reflected by the product and the container; and
(c) processing the detected electromagnetic energy to determine the presence or position of the product in the container. - View Dependent Claims (20, 21)
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22. A method for detecting the presence or position of an ophthalmic product in a container, the product including a media which fluoresces, absorbs or reflects the electromagnetic energy of a frequency in a specified range, the method comprising:
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(a) directing electromagnetic energy at the product and the container;
(b) detecting, without imaging, the absence of or reduction in electromagnetic energy of a frequency in a specified range which passes through or is reflected by the product and the container; and
(c) processing the detected electromagnetic energy to determine the presence or position of the product in the container. - View Dependent Claims (23, 24)
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Specification