Invention Grant
- Patent Title: Portable illumination device
- Patent Title (中): 便携式照明装置
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Application No.: US12279074Application Date: 2007-02-15
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Publication No.: US07692136B2Publication Date: 2010-04-06
- Inventor: Martin Hillebrand Blees , Ferry Barrois , Wilhelmus Frederik Laurens Maria Hoeben , Mikhail Sorokin , Ludo Haenen , Bennie Simpelaar , Nebojsa Fisekovic
- Applicant: Martin Hillebrand Blees , Ferry Barrois , Wilhelmus Frederik Laurens Maria Hoeben , Mikhail Sorokin , Ludo Haenen , Bennie Simpelaar , Nebojsa Fisekovic
- Applicant Address: NL Eindhoven
- Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee Address: NL Eindhoven
- Priority: EP06110151 20060220
- International Application: PCT/IB2007/050499 WO 20070215
- International Announcement: WO2007/096814 WO 20070830
- Main IPC: H01J3/14
- IPC: H01J3/14 ; G01J1/32 ; F21L4/02
Abstract:
A portable illumination device, for illuminating an object through a medium having an absorption coefficient, has a lighting unit including at least two differently colored light sources for emitting light having a color distribution and a control unit for adjusting the color distribution. The control unit is adapted to receive a distance estimate corresponding to the distance between the illumination device and the object, and adjust the color distribution depending on the distance estimate, such that light reflected from the object is perceived to have substantially correct color reproduction.
Public/Granted literature
- US20090014624A1 PORTABLE ILLUMINATION DEVICE Public/Granted day:2009-01-15
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