Illuminating device

Details Illuminating device Illuminating device

2011-04-12

2011-04-12

Patel, Vip (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S498000

Reexamination Certificate

active

07923928

ABSTRACT:
An illuminating device comprises one or more luminescent devices (1). The luminescent device comprises a semiconductor light emitting element (10) emitting a excitation light having an peak within a wavelength range from 350 nm to 430 nm, and a luminescent part (20) comprising a sealing member (22) and a phosphor (21) absorbing the light from the semiconductor light emitting element (10) and emitting a light with different emission spectrum. For the luminescent device (1), an excitation light contribution degree ΔE, an index quantitatively representing what extent of a visible component of the excitation light is involved in color mixing of a combined light of the luminescent device (1), is 0.005 or less, and a mean color rendering index Ra is 70 or more.

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patent: 2005/0179064 (2005-08-01), Nawashiro et al.
patent: 2006/0045832 (2006-03-01), Nagatomi et al.
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patent: 2006 63233 (2006-03-01), None
patent: 2006 93738 (2006-04-01), None

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