THREE-DIMENSIONAL SHAPE MEASUREMENT DEVICE

PROBLEM TO BE SOLVED: To enable a shape measurement of an object to be more accurately made in a three-dimensional shape measurement device capturing reflection light of slit light formed on an object at two viewpoints, using an optical cutting method.SOLUTION: A plurality of slit light segments (LS...

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Bibliographische Detailangaben
Hauptverfasser: NOZAWA SHOGO, TANIMOTO NAOYUKI, MIYASHITA TAKESHI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To enable a shape measurement of an object to be more accurately made in a three-dimensional shape measurement device capturing reflection light of slit light formed on an object at two viewpoints, using an optical cutting method.SOLUTION: A plurality of slit light segments (LSM, LSA and LSB) are taken out from slit light emitted by a light source part (20), the plurality of slit light segments are caused to be entered to an object, and thereby slit light is formed that irradiates the object. Herein, as to the slight light segment (LSM) at a central part in a longitudinal direction of the slit light emitted by the light source part, the slit light segment is caused to be directly entered to the object, and as to the slit light segments (LSA and LSB) corresponding to end parts in the longitudinal direction of the slit light, the slit light segments are caused to be reflected and caused to be entered into the object. Thus, a supplement by other slit light segments is performed to a dead angle portion of one slit light segment, or overlapping with the slit light segments themselves is performed to a portion running short of an amount of light. 【課題】光切断法を用い、対象物に形成されたスリット光の反射光を2視点で捉える3次元形状計測装置において、対象物の形状測定をより正確に行うことができるようにする。【解決手段】光源部(20)が発するスリット光から複数のスリット光セグメント(LSM,LSA,LSB)を取り出し、それらを対象物に入射させることで対象物に照射するスリット光を形成する。ここで、光源部が発するスリット光の長手方向の中央部のスリット光セグメント(LSM)については直接的に対象物に入射させるとともに、スリット光の長手方向の端部に相当するスリット光セグメント(LSA,LSB)についてはこれらを反射させて対象物に入射させる。これにより、一のスリット光セグメントの死角部位に対しては他のスリット光セグメントによる補完、また光量不足となる部位に対してはスリット光セグメント同士の重畳が行われる。【選択図】図3