JP7042903B2 - 櫛状シフト式スキューミラー - Google Patents
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/32—Holograms used as optical elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1814—Diffraction gratings structurally combined with one or more further optical elements, e.g. lenses, mirrors, prisms or other diffraction gratings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1814—Diffraction gratings structurally combined with one or more further optical elements, e.g. lenses, mirrors, prisms or other diffraction gratings
- G02B5/1819—Plural gratings positioned on the same surface, e.g. array of gratings
- G02B5/1823—Plural gratings positioned on the same surface, e.g. array of gratings in an overlapping or superposed manner
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1861—Reflection gratings characterised by their structure, e.g. step profile, contours of substrate or grooves, pitch variations, materials
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
- G03H1/2645—Multiplexing processes, e.g. aperture, shift, or wavefront multiplexing
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
- G03H1/28—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique superimposed holograms only
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
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- G02B2027/0174—Head mounted characterised by optical features holographic
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- G—PHYSICS
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- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
- G03H2001/2605—Arrangement of the sub-holograms, e.g. partial overlapping
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- Optics & Photonics (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
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Description
[0008]
ホログラム230は、記録されると、回折ビームを生成するためにプローブビームによって照明されてよい。本開示の目的のために、回折ビームはプローブビームの反射と考えることができ、入射光ビーム(例えば画像保持光)と称され得る。プローブビーム及びその反射ビームは、反射軸225によって角度的に二分される(つまり、反射軸に関するプローブビームの入射角は、反射軸に関する反射ビームの反射角と同一の大きさを有する)。回折処理は、記録処理のものに類似の、k空間における1組の数学的演算及び幾何学的演算によって表現され得る。弱い回折限界では、回折ビームの回折光分布は式(4)で与えられる。
回折角度応答は、入射角Δθiの小さな変化に応じた反射角Δθrの変化を表現する。対照的に、真のミラーは、次式で表現される角度応答を有する。
Claims (11)
- 格子媒体と、
前記格子媒体の第1の領域にあるホログラムの第1のセットであって、前記第1のセット内の前記ホログラムのそれぞれが、前記第1の領域を成す前記格子媒体の同じ物理体積内にあるように前記第1のセット内の他のホログラムのそれぞれに少なくとも部分的に重なり、前記第1のセット内の前記ホログラムのそれぞれが、k空間において、格子周波数の第1のセットからのそれぞれ異なる格子周波数及びそれぞれ異なる格子ベクトルを有する、ホログラムの第1のセットと、
前記格子媒体の第2の領域にあるホログラムの第2のセットであって、前記第2のセット内の前記ホログラムのそれぞれが、前記第2の領域を成す前記格子媒体の同じ物理体積内にあるように前記第2のセット内の他のホログラムのそれぞれに少なくとも部分的に重なり、前記第2のセット内の前記ホログラムのそれぞれが、前記k空間において、格子周波数の第2のセットからのそれぞれ異なる格子周波数及びそれぞれ異なる格子ベクトルを有する、ホログラムの第2のセットと、を備え、
ホログラムの前記第2のセット内の前記ホログラムの前記格子周波数は、前記k空間において、前記第1のセット内の前記格子周波数間の近接周波数ギャップ内にあり、
ホログラムの前記第2のセット内の前記ホログラムの前記格子ベクトル及びホログラムの前記第1のセット内のホログラムの前記格子ベクトルは、前記k空間において、同じ方向に向けられており、
ホログラムの前記第1のセットは、前記第1のセットに入射する前記光の所定の波長を角度付きで回折するように構成され、
ホログラムの前記第2のセットは、格子周波数の前記第1のセット内の前記格子周波数間の近接周波数ギャップに対応するホログラムの前記第1のセットを通過した前記光の波長を前記角度で回折するように構成された、光学デバイス。 - ホログラムの前記第1のセットは、第1の格子周波数を有する第1のホログラムと、前記第1の格子周波数から第1の近接周波数ギャップによって隔てられた第2の格子周波数を有する第2のホログラムと、を含む、請求項1に記載の光学デバイス。
- ホログラムの前記第2のセットは、第3の格子周波数を有する第3のホログラムと、前記第3の格子周波数から第2の近接周波数ギャップによって隔てられた第4の格子周波数を有する第4のホログラムと、を含む、請求項2に記載の光学デバイス。
- 前記第3の格子周波数は、前記第1の近接周波数ギャップ内にある、請求項3に記載の光学デバイス。
- 前記第2の格子周波数は、前記第2の近接周波数ギャップ内にある、請求項4に記載の光学デバイス。
- 前記第1のセット内の前記ホログラムのそれぞれは、所与の方向に光を回折させるように構成されており、前記第2のセット内の前記ホログラムのそれぞれは、前記所与の方向に光を回折させるように構成されている、請求項5に記載の光学デバイス。
- ホログラムの前記第1のセットの平均近接周波数ギャップが、4.0 sincピーク-sincヌルよりも大きい、請求項5に記載の光学デバイス。
- 前記格子媒体並びにホログラムの前記第1及び第2のセットを含む、出力カプラを更に備える、請求項1に記載の光学デバイス。
- 前記格子媒体並びにホログラムの前記第1及び第2のセットを含む、入力カプラを更に備える、請求項1に記載の光学デバイス。
- 前記光学デバイスは、クロスカプラ、入力カプラ、出力カプラ、ダイヤモンド拡張器、及びインターリーブカプラからなる群から選択される光学デバイスを備える、請求項1に記載の光学デバイス。
- 前記第1のセット内の前記ホログラムのそれぞれは、所与の角度から0.50度以内にある格子ベクトルを有し、前記光学デバイスは、前記格子媒体内の4つの対応する領域内にホログラムの4つのセットを更に含み、ホログラムの前記4つのセットのそれぞれは、前記近接周波数ギャップ内の格子周波数を有する、請求項1に記載の光学デバイス。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US201762568270P | 2017-10-04 | 2017-10-04 | |
US62/568,270 | 2017-10-04 | ||
PCT/US2018/053155 WO2019070504A1 (en) | 2017-10-04 | 2018-09-27 | OBLIQUE MIRRORS DECALED IN COMB |
Publications (2)
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JP2020536280A JP2020536280A (ja) | 2020-12-10 |
JP7042903B2 true JP7042903B2 (ja) | 2022-03-28 |
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US (1) | US11782273B2 (ja) |
EP (1) | EP3692400B1 (ja) |
JP (1) | JP7042903B2 (ja) |
KR (1) | KR102574653B1 (ja) |
CN (2) | CN114690305A (ja) |
WO (1) | WO2019070504A1 (ja) |
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