| 摘要 |
<p>The present invention describes means for providing line of sight and/or magnification from a lens to a working area without having to hold or use separate devices or arms of the instrument in order to achieve focus on the working area. Additionally, several mechanical solutions are presented to the problem of maintaining the line of sight of a lens on the working area as it is moved. A basic concept of the inventions is the use of tilting the magnifying lens at different angles at different distances to achieve an automatic line of sight. The invention has application to many surgical, consumer, and industrial devices.</p> |
