Optoelectric alignment apparatus

US6661951B1 · kind B1 · utility

Inventors

• Thomas H. Blair · San Jose, US
• Diana Chen · Gilbert, US
• Phillip J. Edwards · San Jose, US
• Siegfried Fleischer · Santa Clara, US
• Bradley Scot Levin · San Jose, US
• Oliver W. Northrup · Mountain View, US
• Michael M. O'Toole · San Jose, US
• Joseph John Vandenberg · Walnut, US
• Brett M. Zaborsky · Newark, US

Key dates

• Filing date: Sep 12, 2001
• Grant date: Dec 9, 2003
• Expiry date: Oct 9, 2021

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/4224
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Optical alignment apparatus includes a first element mounting a first lens and a light source and a second element mounting a second lens and a light receiving structure. The first lens is placed a first distance from the light source and is constructed to collimate light received from the light source. The first and second elements are mounted relative to each other to position the second lens a third distance from the first lens and to receive the collimated light from the first lens. The second lens is positioned a second distance from the light receiving structure to focus the collimated light on the light receiving structure. The first and second lens are constructed so that the first and second distances are dependent upon each other and the third distance is independent of the first and second distances.