Lens parameter measurement using optical sectioning
文献类型：专利
| 作者 | ROSS DENWOOD F. III |
| 发表日期 | 1998-10-28 |
| 专利号 | EP0766063A3 |
| 著作权人 | JOHNSON & JOHNSON VISION CARE, INC. |
| 国家 | 欧洲专利局 |
| 文献子类 | 发明申请 |
| 其他题名 | Lens parameter measurement using optical sectioning |
| 英文摘要 | An arrangement for measuring desired parameters of a contact lens by optical sectioning which comprises a support fixture on which a contact lens is positioned. The support fixture includes a container in which a pedestal is positioned, and the container is filled with a saline solution. The contact lens is placed on the pedestal completely immersed in the saline solution. A line of light is generated and directed by imaging and shaping optical elements over the edge of the container and through a selected diameter of the contact lens. An imaging camera detects and image of the light scattered at the surfaces of the contact lens at the selected diameter, which is captured by a frame grabber and is digitally stored for subsequent image processing and determination of the desired parameters of the contact lens. The analysis provides at least four basic parameters of the contact lens including the diameter (D), front radius of curvature (FC), back radius of curvature (BC), and center thickness (CT), and can also provide the lenticular curve radius, the peripheral curve radius, the sagittal height, aspherical forms and deviations of the several measured curvatures, and the power of the lens. |
| 公开日期 | 1998-10-28 |
| 申请日期 | 1996-09-27 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/62443]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | JOHNSON & JOHNSON VISION CARE, INC. |
| 推荐引用方式 GB/T 7714 | ROSS DENWOOD F. III. Lens parameter measurement using optical sectioning. EP0766063A3. 1998-10-28. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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