Title:
HIGH-PRESSURE DISCHARGE LAMP, LIGHT SOURCE UNIT, AND PROJECTOR
Document Type and Number:
Japanese Patent JP2004063222
Kind Code:
A
Abstract:
To provide a high-pressure discharge lamp of high-power and long-life even if it's a short arc type.
Flat sections 22 with a width w1 parallel to a bulb axis (X axis) are formed almost in central sections of the cross-sectional outer outline of a luminous part 2. The shape of the cross-sectional inner outline of the luminous part 2 is formed so that linear sections 231 and linear sections 232 sandwich a y-axis in the center, make an angle, face each other, and almost form truncated chevron shapes, respectively, and the shape of the cross-section of the top and bottom inner walls become almost in a rhombus.
Inventors:
IKEDA MASARU
MINAMIBATA AKIRA
HORIUCHI MAKOTO
MINAMIBATA AKIRA
HORIUCHI MAKOTO
Application Number:
JP2002218866A
Publication Date:
February 26, 2004
Filing Date:
July 26, 2002
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G03B21/14; F21S2/00; H01J61/33; H01J61/88; F21Y101/00; (IPC1-7): H01J61/33; F21S2/00; G03B21/14; H01J61/88
Attorney, Agent or Firm:
Shiro Nakajima