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.
Patent No.:
Date of Patent:
Oct. 05, 2004
Filed:
Nov. 27, 2002
Jong Geun Yoon, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
Disclosed is an optical projection system having a simple structure by scrolling a light of each wavelength efficiently on a panel by preventing a color shift by adjusting a width of a color band on a color drum surface properly. The present invention includes the color drum outputting an incident light through a predetermined number of color bands on a drum plane to display wherein a light outputted from an end of a light projecting plane outputting the incident light has an incident angle equal to or smaller than 30° on the color band. Therefore, the present invention minimizes the influence of the color shift, provides an incident light in the scroll optical system effectively using the simple and inexpensive color drum, and prevents the degradation of image.