A light source device includes a light source unit emitting light of a first wavelength and a wavelength converting element converting light of the first wavelength into light of a second wavelength. An external mirror transmits light of the second wavelength toward an emission destination and reflects light of the first wavelength to resonate between the light source unit and the external mirror. A wavelength separating section transmits light converted from the first wavelength to the second wavelength while traveling from the external mirror to the light source unit and reflects light of the first wavelength in order to separate the different wavelength light. A turnback section reflects light of the second wavelength separated by the wavelength separating section toward the emission destination. In addition, the wavelength separating section reflects light of the first wavelength from the light source unit to travel toward the wavelength converting element.

Claims

21 · 1 independent · depth 4

21 granted claims

›1.independentA light source device, comprising:na light source unit emitting light of a first wavelength;a wavelength converting element converting the light of th…+20

›2.↳ 1The light source device according to claim 1, wherein the turnback section has an integrated structure.d2

›3.↳ 1The light source device according to claim 1, wherein the turnback section allows the light of the second wavelength emitting from the turnback sectio…d2

›4.↳ 1The light source device according to claim 1, wherein the turnback section allows the light of the second wavelength traveling from the turnback secti…d2

›5.↳ 1A projector comprising:nthe light source device according to claim 1; anda spatial light modulator modulating a light from the light source device on …d2

›6.↳ 1The light source device according to claim 1, wherein the light source unit is provided with a mirror layer, and the light of the first wavelength res…d2

›7.↳ 1The light source device according to claim 1, wherein the turnback section includes an optical element totally reflecting the light of the second wave…d2+2

›10.↳ 1The light source device according to claim 1, wherein the wavelength separating section serves as a first wavelength separating section reflecting a p…d2+2

›13.↳ 1The light source device according to claim 1, wherein the turnback section includes a first mirror serving as the wavelength separating section, a sec…d2+3

›17.↳ 1The light source device according to claim 1, wherein the turnback section allows the light of the second wavelength emitting from the turnback sectio…d2+4

Classifications

10 codes

IPC · International Patent Classification

Section F — Mechanical engineering; lighting; heating; weapons

F21V9/00
F21V33/00

USPC · US Patent Classification

362/293313/501313/493362/298362/305362/253362/84313/498

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Pendency

1.1 y

393 days filing → grant

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non-final + final

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no RCE

Examiner

Ismael Negron

art unit 2885 · TC 2800

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1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20110216105 A1	8 Sep 2011

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