Method of adjusting brightness of illuminator in processing apparatus
US11140335B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2021 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Jan 7, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of adjusting the brightness of an illuminator in a processing apparatus includes, by a first processing apparatus, storing a sample image obtained by photographing a workpiece with a brightness specified by a first control value, together with the first control value, copying the sample image, the first control value and a processing condition to a second processing apparatus, by the second processing apparatus, storing a plurality of comparative images obtained by photographing the workpiece with brightnesses specified by a plurality of different control values, identifying a control value at a time of photographing a comparative image having a minimum difference in brightness from the sample image as a second control value, by comparing the sample image with the plurality of comparative images, and setting a difference between the first and second control values as a correction value of the control value of the second processing apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.