JP2014215300A - 物体の3次元構造を検出する装置 - Google Patents
物体の3次元構造を検出する装置 Download PDFInfo
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- JP2014215300A JP2014215300A JP2014090746A JP2014090746A JP2014215300A JP 2014215300 A JP2014215300 A JP 2014215300A JP 2014090746 A JP2014090746 A JP 2014090746A JP 2014090746 A JP2014090746 A JP 2014090746A JP 2014215300 A JP2014215300 A JP 2014215300A
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- Length Measuring Devices By Optical Means (AREA)
- Instruments For Measurement Of Length By Optical Means (AREA)
Abstract
【解決手段】 物体15の3次元構造を検出する装置1であって、第1のレーザーエミッタ2aと第2のレーザーエミッタ2bとを備え、光学素子4の少なくとも1つは、レーザーエミッタからのレーザー光線を参照光5と照射光6に分割するビームスプリッタであって、照射光6は物体15に入射し、物体15によって物体光21として反射し、参照光5に干渉し、干渉によって形成される干渉縞を記録する検出器12は、レーザーエミッタが、第1のレーザーエミッタ2aの照射光6と第2のレーザーエミッタ2bの照射光6が物体15に異なる入射角βで入射するように配置され、レーザーエミッタからのレーザー光線の2本の波長を測定する測定装置27を備え、干渉縞の記録に影響を及ぼす。
【選択図】図1a
Description
別の態様においては、深さ情報が、物点16、24、26ごとに測定される。深さ情報という用語は、本発明の背景において、物点16、24、26の深さにおける位置、即ち図1aにおけるレンズ14の光軸に沿った位置と解釈される。深さ情報は、物体15上の隆起部や陥凹部を識別する場合に用いられる。
2 レーザーエミッタ
2a 第1のレーザーエミッタ
2b 第2のレーザーエミッタ
3 エミッタチップ
4 光学素子
5 参照光
6 照射光
10 色分散鏡
12 検出器
14 色分散レンズ
15 物体
19 照射帯
21 物体光
27 測定装置
28 制御装置
29 調節装置
31 測定器
38 マイクロ光学アレイ
47 偏光子
48 ビームスプリッタ
50 ホログラム
51 偏光子
52 光学系
53 色分散レンズ
56 色分散レンズ
58 検出器
62 孔
66 白色光ポイントセンサー
75 層
α 基準入射角
β 入射角
Claims (16)
- 物体(15)の3次元構造を検出する装置であって、
第1の波長を有するレーザー光線を生成する第1のレーザーエミッタ(2a)と、第2の波長を有するレーザー光線を生成する第2のレーザーエミッタ(2b)とを備え、
前記第1の波長は前記第2の波長とは異なり、
光学素子(4、9、10、13、14、38、50、53、56)の少なくとも1つは、前記レーザーエミッタ(2、2a、2b)からの前記レーザー光線をそれぞれ参照光(5)と照射光(6)に分割するビームスプリッタ(4、48、50、54)であって、
前記照射光(6)は測定対象となる前記物体(15)に入射し、前記物体(15)によって物体光(21)として反射し、
前記参照光(5)に干渉し、干渉によって形成される干渉縞を記録する検出器(12)は、前記レーザーエミッタ(2、2a、2b)が、前記第1のレーザーエミッタ(2a)の前記照射光(6)と前記第2のレーザーエミッタ(2b)の前記照射光(6)が前記物体(15)に異なる入射角(β)で入射するように配置され、また前記装置(1)が、前記レーザーエミッタ(2、2a、2b)からの前記レーザー光線の2本の波長を測定する測定装置(27)を備え、前記干渉縞の記録に影響を及ぼすことによって特徴付けられる装置。 - 前記測定装置(27)が、前記レーザーエミッタ(2、2a、2b)からの前記レーザー光線の波長の時間効率性を測定し、制御装置(28)が、波長がほぼ一定な場合に前記検出器(12)を作動させ、前記干渉縞の記録を開始させることにより特徴付けられる請求項1に記載の装置。
- 前記装置(1)が、前記測定装置(27)の測定結果に応じて、前記送出されたレーザー光線の波長がほぼ一定となるように、前記レーザーエミッタ(2、2a、2b)を調節する調節装置(29)を備えることにより特徴付けられる請求項2に記載の装置。
- 前記測定装置(27)が、ファブリペロー干渉計として構成されることにより特徴付けられる請求項2又は3に記載の装置。
- 前記第1のレーザーエミッタ(2a)と前記第2のレーザーエミッタ(2b)が、共通のエミッタチップ(3)に間隔を置いて配置されることにより特徴付けられる請求項1〜4の何れか一項に記載の装置。
- 前記光学素子(4、9、10、13、54)の少なくとも1つが、前記参照光(5)を前記各々のレーザーエミッタ(2)の前記参照光(5)が異なる基準入射角(α)で前記検出器(12)に入光するように反射する構成になっていることにより特徴付けられる請求項1〜5の何れか一項に記載の装置。
- 前記光学素子の少なくとも1つが、前記照射光(6)を1つ以上の照射帯(19)として前記物体(15)に入射するように偏光させるホログラム(50)であることにより特徴付けられる請求項1〜6の何れか一項に記載の装置。
- マイクロ光学アレイ(38)が、前記レーザーエミッタ(2、2a、2b)の前記レーザー光線を前記参照光(5)と前記照射光(6)に分割し、両方の光(5、6)の群に異なる照射プロファイルを提供する前記ビームスプリッタ(48、50)を備えることにより特徴付けられる請求項1〜7の何れか一項に記載の装置。
- 前記マイクロ光学アレイ(38)が、前記レーザーエミッタ(2、2a、2b)の前記照射光(6)および/または前記参照光(5)を偏光させるために、少なくとも1つの偏光子(47、51)を備えることにより特徴付けられる請求項8に記載の装置。
- 前記マイクロ光学アレイが(38)が、少なくとも1つのホログラム(50)を備えることにより特徴付けられる請求項8に記載の装置。
- 前記光学素子の少なくとも1つが、色分散レンズ(14、53、56)として、または色分散鏡(10)として構成されることにより特徴付けられる請求項1〜10の何れか一項に記載の装置。
- 前記装置(1)が、2つのエミッタチップ(3)と2つの検出器(12、58)を備えており、前記1つのエミッタチップ(3)に配置される前記レーザーエミッタ(2、2a、2b)の前記レーザー光線が、前記1つの検出器(12)に入射し、前記別のエミッタチップ(3)に配置される前記レーザーエミッタ(2、2a、2b)の前記レーザー光線が、前記別の検出器(58)に入射することにより特徴付けられる請求項1〜11の何れか一項に記載の装置。
- 前記装置(1)が、前記物体(15)に配置される層(75)の前記厚さを測定するための測定器(31)を備えることにより特徴付けられる請求項1〜12の何れか一項に記載の装置。
- 前記測定器(31)が、周波数走査干渉分光法の原理に従って作動する白色光ポイントセンサー(66)を備えることにより特徴付けられる請求項13に記載の装置。
- 前記測定器(31)が、偏光解析法の原理に基づいて、前記物体(15)に配置された前記層(75)の厚さを測定するように構成されていることにより特徴付けられる請求項13に記載の装置。
- 前記装置(1)が、複数の光学素子(50、53、56、57、63)を有する光学系(52)を備え、前記光学系(52)が、患者の口腔内領域または孔(62)に挿入可能に構成されていることにより特徴付けられる請求項1〜15の何れか一項に記載の装置。
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