PORTABLE LIGHT SOURCE - HAMAMATSU PHOTONICS KK

Title:

PORTABLE LIGHT SOURCE

Document Type and Number:

WIPO Patent Application WO/2000/066944

Kind Code:

A1

Abstract:

A portable light source comprises a lamp (10) contained in a lamp box (42), which is housed in a case (41) to significantly reduce the influences of ambient temperature. In other words, the deuterium lamp (10), likely to be influenced by temperature, is enclosed in a double shield structure including the case (41) as well as the lamp box (42). It is known that ultraviolet irradiation of the air generates ozone. To prevent ultraviolet rays from penetrating the cooling air, an ultraviolet window (69) of the lamp box (42) is provided on an extension light guide (70). As a result, the generation of ozone is controlled in the areas where ultraviolet rays exist in the case (41), effectively preventing the fluctuation of output light due to the generation of ozone.

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Inventors:

SEI YUJIRO (JP)
ITO MASAKI (JP)

Application Number:

PCT/JP2000/002845

Publication Date:

November 09, 2000

Filing Date:

April 28, 2000

Export Citation:

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Assignee:

HAMAMATSU PHOTONICS KK (JP)
SEI YUJIRO (JP)
ITO MASAKI (JP)

International Classes:

F21V17/00; F21L13/00; F21L14/00; F21L14/02; F21V8/00; F21V29/00; F21V29/02; F21V29/15; G01J3/02; G01J3/10; G01N21/01; G02B6/00; H01J61/02; H01J61/04; H01J61/12; H01J61/52; (IPC1-7): F21L13/00; F21V29/00; F21V8/00; G01J3/10; G01N21/01

Foreign References:

JPH0927213A	1997-01-28
JPH08222186A	1996-08-30
JPH08329732A	1996-12-13
JPH02276927A	1990-11-13
JPH08329732A	1996-12-13
JPH08233659A	1996-09-13
JPH0927213A	1997-01-28
JPS57165811A	1982-10-13

Other References: