LIGHT SOURCE APPARATUS, ITS MANUFACTURING METHOD AND APPARATUS, REFLECTOR FOCAL POINT LOCATING METHOD AND APPARATUS, FOCAL POINT LOCATING LIGHT SOURCE, DISCHARGE LAMP EMITTION POSITION LOCATING METHOD AND APPARATUS, AND DISCHARGE LAMP-REFLETOR POSITIONING METHOD AND APPARATUS

Title:

Document Type and Number:

WIPO Patent Application WO2002055925

Kind Code:

A3

Abstract:

The light emitted from a focal point locating light source (38) and reflected from a reflector (12) is projected onto a screen (341) and the projected image on the screen (341) is imaged by a focal point locating camera (35). With reference to the projected image, the focal point locating light source (38) is moved by means of a position adjusting system (37) so as to place the focal point locating light source (38) at the focal point of the reflector (12). The position of the placed focal position locating light source (38) is made the focal position of the reflector (12). Conventional measurement by means of a three-dimensional measurement instrument is unnecessary since the projected image on the screen (341) imaged by the focal point locating camera (35) is used so as to locate the focal point of the reflector (12), thereby improving the work efficiency.

Inventors:

IWADARE YOSHIJI (JP)
SHINOHARA KAZUTO (JP)
FUJISAWA SHOHEI (JP)

Application Number:

PCT/JP2002/000072

Publication Date:

November 07, 2002

Filing Date:

January 10, 2002

Export Citation:

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Assignee:

SEIKO EPSON CORP (JP)
IWADARE YOSHIJI (JP)
SHINOHARA KAZUTO (JP)
FUJISAWA SHOHEI (JP)

International Classes:

G02B27/00; G02B27/14; G03B21/20; F21Y101/00; (IPC1-7): F21S2/00; G03B21/00

Foreign References:

JP2000357405A	2000-12-26
JPH0587630A	1993-04-06
JPH03115827A	1991-05-16
JPS5648608A	1981-05-01
JP2000349003A	2000-12-15
JP2000299270A	2000-10-24
JP2000323287A	2000-11-24

Other References: