The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 08, 2005

Filed:

Mar. 18, 2003
Applicants:

Sang Jin Cho, Daedeok-ku, KR;

Chang Hee Lee, Yusong-ku, KR;

Young Jin Kim, Yusong-ku, KR;

Jeong Soo Lee, Yusong-ku, KR;

Young Hyun Choi, Yusong-ku, KR;

Kwang Pyo Hong, Yusong-ku, KR;

Inventors:

Sang Jin Cho, Daedeok-ku, KR;

Chang Hee Lee, Yusong-ku, KR;

Young Jin Kim, Yusong-ku, KR;

Jeong Soo Lee, Yusong-ku, KR;

Young Hyun Choi, Yusong-ku, KR;

Kwang Pyo Hong, Yusong-ku, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B005/10 ;
U.S. Cl.
CPC ...
Abstract

Disclosed herein is an apparatus for generating a parallel beam with a high flux. The apparatus of the present invention includes a light source, a first mirror and a second mirror. The light source is positioned at a first focal point of a first ellipse. The first mirror is positioned on the first ellipse to reflect a beam emitted by the light source, and concavely shaped to conform to a section of the first ellipse. The second mirror is positioned across a path of the beam reflected by the first mirror, and convexly shaped to conform to a section of a second ellipse so that an angle formed by two tangent lines passing through each pair of incident points of neighboring rays incident upon the second mirror, respectively, is half of an angle formed by two tangent lines passing through each pair of incident points of neighboring rays incident upon the first mirror, respectively.


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