JP2012527020A - スペックル低減レーザ源を利用した画像プロジェクタ - Google Patents
スペックル低減レーザ源を利用した画像プロジェクタ Download PDFInfo
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- JP2012527020A JP2012527020A JP2012510996A JP2012510996A JP2012527020A JP 2012527020 A JP2012527020 A JP 2012527020A JP 2012510996 A JP2012510996 A JP 2012510996A JP 2012510996 A JP2012510996 A JP 2012510996A JP 2012527020 A JP2012527020 A JP 2012527020A
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- Prior art keywords
- laser
- light
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- image
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
- H01S3/108—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using non-linear optical devices, e.g. exhibiting Brillouin or Raman scattering
- H01S3/109—Frequency multiplication, e.g. harmonic generation
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
- G03B21/006—Projectors using an electronic spatial light modulator but not peculiar thereto using LCD's
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3161—Modulator illumination systems using laser light sources
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S2301/00—Functional characteristics
- H01S2301/02—ASE (amplified spontaneous emission), noise; Reduction thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0085—Modulating the output, i.e. the laser beam is modulated outside the laser cavity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08086—Multiple-wavelength emission
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/1022—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1611—Solid materials characterised by an active (lasing) ion rare earth neodymium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/17—Solid materials amorphous, e.g. glass
Abstract
Description
Claims (10)
- 画像を投影するための光デバイスであって、
レーザキャビティを備え、第1の光ビームを発生するように適応された第1のレーザと、
前記第1の光ビームを使用して照明されるように構成された空間光変調器(SLM)と
を備え、
前記SLMが画像を形成する複数の画素によって発生された空間パターンを使用して、受光された照明光を変調するように適応され、
前記第1の光ビームが前記レーザキャビティの複数のそれぞれ異なる空間モードに対応する複数のスペクトル線を備えたスペクトルを有し、
前記光デバイスが前記スペクトルを有する光を使用して前記画像を投影する、
光デバイス。 - 前記第1の光ビームが約2nmより大きいが約20nmより小さいスペクトル拡散を特徴とし、
前記スペクトルが光の赤色、緑色、または青色に対応する中央値波長を有するスペクトルのエンベロープを特徴とする、請求項1に記載の発明。 - 前記複数のスペクトル線が約100より多いスペクトル線を備える、請求項1に記載の発明。
- 前記第1のレーザが、前記レーザキャビティにおいてモード・ホッピングを能動的に誘導して、前記第1の光ビームの前記スペクトルにおいて時間的変化を生じさせるように適応されたコントローラをさらに備える、請求項1に記載の発明。
- 前記第1のレーザが前記レーザキャビティを光学的にポンプするように適応された光ポンプをさらに備え、
前記レーザキャビティが能動光素子および非線形光(NLO)素子を備え、
前記能動光素子が前記光ポンプによって供給された光を吸収し、発光帯域を形成する光を発するように適応され、
前記NLO素子が前記発光帯域のサブバンドに対応する周波数を倍増して、前記第1のレーザに前記第1の光ビームを発生させるように適応される、
請求項1に記載の発明。 - 前記NLO素子が前記周波数を二倍または三倍にするように適応され、
前記サブバンドが少なくとも約10nmのスペクトル幅を有し、
前記能動光素子が希土類イオンでドープされたガラス材料を備える、
請求項5に記載の発明。 - 前記第1のレーザが、前記光ポンプに前記第1の光ビームの前記スペクトルにおいて能動的に時間的変化を生じさせるように構成するように適応されたコントローラ回路をさらに備える、請求項5に記載の発明。
- 第2の光ビームを発生するように適応された第2のレーザと、
第3の光ビームを発生するように適応された第3のレーザと
をさらに備え、
前記SLMが前記第2の光ビームおよび前記第3の光ビームを使用して照明されるように構成され、
前記画像が多色であると感知されるようにするために、前記第1の光ビーム、前記第2の光ビーム、および前記第3の光ビームが、それぞれ、それぞれ異なる色の光を有し、
前記第2の光ビームおよび前記第3の光ビームの少なくとも1つが、約2nmより大きいが約20nmより小さいスペクトル拡散を特徴とする、
請求項1に記載の発明。 - 画像を投影する方法であって、
第1のレーザを用いて第1の光ビームを発生するステップと、
前記第1の光ビームを空間光変調器(SLM)を照明するように方向づけるステップと、
前記画像を形成する複数の画素によって発生された空間パターンを用いて前記SLMによって受光された照明光を変調するステップと
を備え、
前記第1のレーザがレーザキャビティを備え、
前記第1の光ビームが前記レーザキャビティの複数のそれぞれ異なる空間モードに対応する複数のスペクトル線を備えたスペクトルを有し、さらに、
前記スペクトルを有する光を使用して前記画像を投影するステップ
を備える方法。 - レーザであって、
レーザキャビティと、
前記レーザキャビティを光学的にポンプするように適応された光ポンプと
を備え、
前記レーザが広帯域スペクトルを特徴とする光ビームを発生するように適応され、
前記スペクトルが前記レーザキャビティの複数のそれぞれ異なる空間モードに対応する複数のスペクトル線を備える、
レーザ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/466,790 US8226241B2 (en) | 2009-05-15 | 2009-05-15 | Image projector employing a speckle-reducing laser source |
US12/466,790 | 2009-05-15 | ||
PCT/US2010/034631 WO2010132623A2 (en) | 2009-05-15 | 2010-05-13 | Image projector employing a speckle-reducing laser source |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2012527020A true JP2012527020A (ja) | 2012-11-01 |
Family
ID=43068242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012510996A Pending JP2012527020A (ja) | 2009-05-15 | 2010-05-13 | スペックル低減レーザ源を利用した画像プロジェクタ |
Country Status (7)
Country | Link |
---|---|
US (1) | US8226241B2 (ja) |
EP (1) | EP2430497A2 (ja) |
JP (1) | JP2012527020A (ja) |
KR (1) | KR20120008053A (ja) |
CN (1) | CN102422221A (ja) |
SG (1) | SG176049A1 (ja) |
WO (1) | WO2010132623A2 (ja) |
Cited By (1)
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TWM457188U (zh) * | 2012-11-16 | 2013-07-11 | Azurewave Technologies Inc | 用於增加光傳輸效率的投影裝置 |
US9343020B2 (en) * | 2013-08-05 | 2016-05-17 | Massachusetts Institute Of Technology | Methods and apparatus for visual display |
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Also Published As
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CN102422221A (zh) | 2012-04-18 |
KR20120008053A (ko) | 2012-01-25 |
SG176049A1 (en) | 2011-12-29 |
WO2010132623A3 (en) | 2011-04-14 |
US20100290009A1 (en) | 2010-11-18 |
WO2010132623A2 (en) | 2010-11-18 |
EP2430497A2 (en) | 2012-03-21 |
US8226241B2 (en) | 2012-07-24 |
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