| US 7,343,069 B2 | ||
| Optical element and system using the same | ||
| Alan D. Kathman, Charlotte, N.C. (US); Charles S. Koehler, Charlotte, N.C. (US); William H. Welch, Charlotte, N.C. (US); Eric G. Johnson, Winter Park, Fla. (US); and Robert D. Tekolste, Charlotte, N.C. (US) | ||
| Assigned to Tessera North America, Inc., Charlotte, N.C. (US) | ||
| Filed on May 18, 2007, as Appl. No. 11/802,044. | ||
| Application 11/802044 is a continuation of application No. 10/320525, filed on Dec. 17, 2002, granted, now 7,221,823. | ||
| Application 10/320525 is a continuation of application No. 09/614184, filed on Jul. 11, 2000, granted, now 6,496,621. | ||
| Application 09/614184 is a continuation in part of application No. 09/329996, filed on Jun. 11, 1999, granted, now 6,530,697. | ||
| Claims priority of provisional application 60/101367, filed on Sep. 22, 1998. | ||
| Prior Publication US 2007/0223094 A1, Sep. 27, 2007 | ||
| Int. Cl. G02B 6/42 (2006.01) | ||
| U.S. Cl. 385—39 [385/33; 385/51] | 20 Claims |
| 1. An optical element, comprising:
a first diffractive structure having a radially symmetric amplitude function; and
a second diffractive structure having a phase function.
|