JP5528469B2 - 照明手段及び同照明手段を少なくとも1つ有するプロジェクタ - Google Patents
照明手段及び同照明手段を少なくとも1つ有するプロジェクタ Download PDFInfo
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- H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
- H01S5/0087—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping for illuminating phosphorescent or fluorescent materials, e.g. using optical arrangements specifically adapted for guiding or shaping laser beams illuminating these materials
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- H01S5/00—Semiconductor lasers
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/32—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures
- H01S5/323—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser
- H01S5/32308—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser emitting light at a wavelength less than 900 nm
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- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
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- H04N9/3129—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen
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- H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
- H01S5/0071—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping for beam steering, e.g. using a mirror outside the cavity to change the beam direction
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- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
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- H01S5/00—Semiconductor lasers
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- H01S5/00—Semiconductor lasers
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- H01S5/4087—Array arrangements, e.g. constituted by discrete laser diodes or laser bar emitting more than one wavelength
- H01S5/4093—Red, green and blue [RGB] generated directly by laser action or by a combination of laser action with nonlinear frequency conversion
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- Semiconductor Lasers (AREA)
- Projection Apparatus (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Description
Claims (15)
- 照明手段(1)であって、
該照明手段(1)は、
360nm以上485nm以下の波長の一次放射(P)を放出するように形成された少なくとも1つの半導体レーザ(2)と、
熱伝導性の第1支持体(4)と、
少なくとも2つの相異なる変換手段(3)とを有しており、
前記変換手段(3)は前記半導体レーザ(2)に後置されており、前記一次放射(P)の少なくとも一部を、前記一次放射(P)とは異なるより大きな波長を有する二次放射(S)に変換するように形成されており、前記変換手段(3)は、前記第1支持体(4)に取り付けられており、
前記照明手段(1)から放出される放射(R)は最大で50μmの光学コヒーレンス長を有し、
前記一次放射(P)によって照射される、前記変換手段(3)のスポット(7)はそれぞれ最大で0.5mm 2 の面積を有しており、
前記変換手段(3)は、少なくとも107/μm3の濃度の色中心又は光点を有しており、当該色中心又は光点は前記変換手段内に統計的に分布しており、
前記個別の色中心又は光点から放出される二次放射(S)は、隣接する色中心又は光点から放射される二次放射(S)に対して固定的な又は決められた位相関係を有していないため、二次放射(S)は非コヒーレントな放射であり、
前記第1支持体(4)は、機械的に可動に支承されており、互いに異なる変換手段(3)が設けられた少なくとも2つの領域(41)を有しており、前記第1支持体(4)の運動により前記二次放射(S)の色度座標を定めることができ、
前記第1支持体(4)は、前記二次放射(S)の少なくとも一部に対しては透過性を有し、択一的又は付加的に前記一次放射(P)に対しては不透過性を有し、
少なくとも1つのピンホールアパーチャ(12)が前記変換手段(3)に後置されており、前記照明手段(1)を出るときの散乱放射が前記ピンホールアパーチャ(12)によって防止されるため、前記照明手段(1)から放出される放射は決められた空間領域内に放出され、
前記変換手段(3)はそれぞれ、最大で前記スポット(7)の平均直径(d)の3倍に相当する直径(D)を有する、前記第1支持体(4)の領域(41)にそれぞれ取り付けられており、
偏向ユニット(13)及び/又は結像ユニット(14)が、前記二次放射(S)のビーム路(9)内又はビーム路(9)上に存在する、
ことを特徴とする照明手段(1)。 - 前記変換手段(3)から出射するときの前記二次放射(S)の輝度は少なくとも部分的に少なくとも1kW/cm2である、請求項1記載の照明手段(1)。
- 前記第1支持体(4)は前記二次放射(S)の少なくとも一部に対しては透過性を有し、前記一次放射(P)に対しては不透過性である、請求項1又は2記載の照明手段(1)。
- 前記照明手段(1)は前記変換手段(3)に後置された少なくとも1つのコリメータ光学系(6)を含んでおり、当該コリメータ光学系(6)を通過した後の前記二次放射(S)の放射角は少なくとも部分的に最大で10°である、請求項1から3のいずれか1項記載の照明手段(1)。
- 前記第1支持体(4)は、前記二次放射(S)の色度座標を調節するために前記ビーム路(9)に対して垂直な方向にのみずらされている、請求項1から4までのいずれか1項記載の照明手段(1)。
- 少なくとも2つの半導体レーザ(2)が同一のスポット(7)を照射する、請求項1から5のいずれか1項記載の照明手段(1)。
- 前記複数の変換手段(3)は前記第1支持体(4)と第2支持体(5)との間にあり、それぞれ少なくとも間接的に前記支持体(4,5)に接触しており、前記一次放射(P)は前記支持体(4,5)の少なくとも一方を通過する、請求項1から6のいずれか1項記載の照明手段(1)。
- 前記複数の変換手段(3)が取り付けられている前記第1支持体(4)の主面(40)は少なくとも前記二次放射(S)に対しては反射性を有するか、又は反射コーティング(8)を備えており、前記ビーム路(9)は前記第1支持体(4)によって方向を変化させられる、請求項1から7のいずれか1項記載の照明手段(1)。
- 前記照明手段(1)は少なくとも3つの半導体レーザ(2)を含んでおり、前記半導体レーザ(2)の少なくとも2つの半導体レーザは、前記複数の変換手段(3)の少なくとも2つの異なるスポット(7)を照射し、前記照明手段(1)から放出される放射(R)は赤、緑及び青の光を含んでいる、請求項1から8のいずれか1項記載の照明手段(1)。
- 前記赤、緑及び青の光は互いに独立して生成可能であり、前記ビーム路(9)の少なくとも一部を一緒に通過する、請求項1から9のいずれか1項記載の照明手段(1)。
- 前記照明手段(1)は前記二次放射(S)のビーム路(9)上に配置された少なくとも1つの変調器(11)を含んでおり、当該変調器(11)は透過又は反射によって前記二次放射(S)の強度を調節するように形成されている、請求項1から10のいずれか1項記載の照明手段(1)。
- 前記照明手段(1)から放出される放射(R)の強度及び色度座標は少なくとも10MHzの周波数で変調可能である、請求項1から11のいずれか1項記載の照明手段(1)。
- 前記偏向ユニット(13)及び/又は前記結像ユニット(14)にはフィルタ(15)が後置されており、
前記フィルタ(15)は前記一次放射(P)に対して不透過である、
請求項1から12のいずれか1項記載の照明手段(1)。 - 前記第1支持体(4)は少なくとも40W/(m K)の熱伝導性を有しており、
前記変換手段(3)の層厚は、前記第1支持体(4)の主面(40)に対して垂直な方向において3μm以上300μm以下である、
請求項1から13のいずれか1項記載の照明手段(1)。 - 請求項1から14のいずれか1項記載の少なくとも1つの照明手段(1)と、少なくとも1つの偏向ユニット(13)及び少なくとも1つの結像ユニット(14)とを有することを特徴とするプロジェクタ(10)。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008063634.7 | 2008-12-18 | ||
DE102008063634.7A DE102008063634B4 (de) | 2008-12-18 | 2008-12-18 | Leuchtmittel und Projektor mit mindestens einem solchen Leuchtmittel |
PCT/DE2009/001448 WO2010069282A2 (de) | 2008-12-18 | 2009-10-19 | Leuchtmittel und projektor mit mindestens einem solchen leuchtmittel |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2012512508A JP2012512508A (ja) | 2012-05-31 |
JP2012512508A5 JP2012512508A5 (ja) | 2014-03-20 |
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WO2010069282A3 (de) | 2010-11-11 |
CN102246527B (zh) | 2014-03-12 |
US20120039072A1 (en) | 2012-02-16 |
KR101621118B1 (ko) | 2016-05-13 |
KR20160104738A (ko) | 2016-09-05 |
KR101731773B1 (ko) | 2017-04-28 |
KR20160047588A (ko) | 2016-05-02 |
EP2359605A2 (de) | 2011-08-24 |
KR20110102472A (ko) | 2011-09-16 |
EP2359605B1 (de) | 2013-01-02 |
CN102246527A (zh) | 2011-11-16 |
JP2012512508A (ja) | 2012-05-31 |
DE102008063634B4 (de) | 2021-03-11 |
KR101655728B1 (ko) | 2016-09-07 |
WO2010069282A2 (de) | 2010-06-24 |
DE102008063634A1 (de) | 2010-06-24 |
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