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. 09, 2012
Filed:
Mar. 29, 2010
Hee-joong Lee, Gyeonggi-do, KR;
Young-hun Lee, Chungcheongman-do, KR;
Sung-hoon Hwang, Seoul, KR;
Seung-ki Hong, Gyeonggi-do, KR;
Hee-Joong Lee, Gyeonggi-do, KR;
Young-Hun Lee, Chungcheongman-do, KR;
Sung-Hoon Hwang, Seoul, KR;
Seung-Ki Hong, Gyeonggi-do, KR;
Sekonix Co., Ltd., Gyeonggi-do, KR;
Abstract
There is provided a projection lens unit for a pico-projector which comprises a lens array, a color composition prism, a cover glass and an image panel, the projection lens unit characterized in that: the lens array includes 1to 6lenses sequentially arrayed from a screen on which an image is projected, the 1lens includes a stop side formed on a 1side of the 1lens, the stop side stops the passage of light, to perform the function of a diaphragm aperture, light passing from the 1lens to the 6lens travels in only one direction of the lens sides based on the diaphragm aperture, and parts of the lens sides through which the light does not pass are cut so that the whole height of the lens array is reduced.