Claims
- 1. A method of inspecting an ophthalmic lens comprising:
- capturing an image of the lens for at least one electromagnetic frequency,
- dividing the image into a group of pixels,
- assigning a position value and an image intensity value to each pixel,
- comparing position values and image intensity values between pixels,
- identifying sets of pixels corresponding to features of said lens,
- comparing the relationship among pixels in a set to predetermined relationships to ascertain if a lens is acceptable.
- 2. The method of claim 1 wherein said comparison between pixels is performed along a path traversing the lens edge.
- 3. The method of claim 1 wherein said identification of features comprises collecting pixels sharing a feature characteristic to form a set.
- 4. The method of claim 1 wherein said comparison is among a set of pixels comprising the lens edge.
- 5. The method of claim 1 wherein said comparison is among a set of pixels comprising a portion of the lens interior.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a divisional of application Ser. No. 08/757,334, U.S. Pat. No. 5,805,276, filed Nov. 27, 1996, which is a continuation of Ser. No. 08/622,022, filed Mar. 27, 1996, abandoned which is a continuation of Ser. No. 08/506,595, filed Jul. 25, 1995, abandoned, which is a continuation of Ser. No. 08/374,407, filed Jan. 17, 1995, abandoned which is a continuation of Ser. No. 07/994,564, filed Dec. 21, 1992 abandoned, and claims a priority date thereof. This application claims the benefit of the filing date of the original parent application, i.e., Ser. No. 07/994,564 filed on Dec. 21, 1992.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
5717781 |
Ebel et al. |
Feb 1998 |
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Foreign Referenced Citations (1)
Number |
Date |
Country |
2057832 |
Jun 1992 |
CAX |
Divisions (1)
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Number |
Date |
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Parent |
757334 |
Nov 1996 |
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Continuations (4)
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622022 |
Mar 1996 |
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Parent |
506595 |
Jul 1995 |
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Parent |
374407 |
Jan 1995 |
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994564 |
Dec 1992 |
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