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Title:
LIGHT IRRADIATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2006/129570
Kind Code:
A1
Abstract:
There is provided a light irradiation device capable of adjusting enlargement/reduction of a light irradiation area and introducing almost all the light emitted from an LED element without loss to the light irradiation area. The light irradiation device includes an LED element (11) and an optical unit (2) passing the light from the LED element (11) and emitting it from an end surface (21). The light irradiation device further includes an element holding body (1A) for holding the LED element (11) at the end surface, and a position adjusting mechanism for adjusting the relative position of the optical unit (2) with respect to the LED element (11) along an optical axis C. The position adjusting mechanism relatively moves the optical unit (2) with respect to the LED element (11) between an approximate position (P1) where the element holding body (1A) is partially or entirely contained in a base indentation (25) and an apart position (P2) where the element holding body (1A) is substantially entirely out of the base indentation (25) and the end surface of the element holding body (1A) is substantially at the same height as the base surface (22) of the optical unit (2).

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Inventors:
YONEDA KENJI (JP)
SAITO MITSURU (JP)
Application Number:
PCT/JP2006/310565
Publication Date:
December 07, 2006
Filing Date:
May 26, 2006
Export Citation:
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Assignee:
CCS INC (JP)
YONEDA KENJI (JP)
SAITO MITSURU (JP)
International Classes:
F21S2/00; F21V14/00; F21Y101/02; H01L33/58; H01L33/60
Domestic Patent References:
WO2001098760A12001-12-27
Foreign References:
JP2005093622A2005-04-07
JPH0737401A1995-02-07
JPH0758362A1995-03-03
JP2003227974A2003-08-15
JP2002043629A2002-02-08
US2254962A1941-09-02
Other References:
See also references of EP 1890076A4
Attorney, Agent or Firm:
Nishimura, Ryuhei (267 Makieya-cho, Nijyo-agaru, Karasuma-dori, Nakagyo-k, Kyoto-city kyoto 57, JP)
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