Abstract: An apparatus and associated method for measuring both transmitted optical distortion and other minimal visible defects in the surface of a glass sheet. The disclosed apparatus includes a glass stand which receives a glass sheet for mounting between a background screen which includes a pre defined contrasting pattern and a digital camera which captures an image of the pattern transmitted through the glass sheet. The digital image is downloaded to a computer that is suitably programmed to analyze the image data to determine (1) optical distortion indicia including the magnification and lens power in the observed image of the pattern transmitted through the glass sheet and (2) small visible optical or obstructive defects on the glass sheet.
| # | Name | Date |
|---|---|---|
| 1 | 2480-CHENP-2013.pdf | 2013-04-01 |
| 2 | Specification.pdf | 2013-04-02 |
| 3 | id00000017203084.pdf | 2013-04-02 |
| 4 | Form 5.pdf | 2013-04-02 |
| 5 | Form 3.pdf | 2013-04-02 |
| 6 | Drawings.pdf | 2013-04-02 |
| 7 | 2480-CHENP-2013 CORRESPONDENCE OTHERS 21-06-2013.pdf | 2013-06-21 |
| 8 | 2480-CHENP-2013 FORM-13 21-06-2013.pdf | 2013-06-21 |
| 9 | 2480-CHENP-2013 FORM-1 21-06-2013.pdf | 2013-06-21 |
| 10 | 2480-CHENP-2013 POWER OF ATTORNEY 07-11-2014.pdf | 2014-11-07 |
| 11 | 2480-CHENP-2013 CORRESPONDENCE OTHERS 07-11-2014.pdf | 2014-11-07 |
| 12 | 2480-CHENP-2013-FER.pdf | 2019-07-11 |
| 13 | 2480-CHENP-2013-AbandonedLetter.pdf | 2020-01-24 |
| 1 | tpo_26-06-2019.pdf |