| 摘要 |
A measuring device (10) is provided with a housing (100), a light blocking member (102), a light emitting means (120), a first optical detection means (140), a second optical detection means (142), and a light guide member (160). The housing (100) is provided with an opening (101). The light blocking member (102) is positioned in the opening (101), and passes at least first wavelength light. The light emitting means (120) is disposed in the housing (100), and outputs light including the first wavelength light. The first optical detection means (140) and the second optical detection means (142) are disposed in the housing (100), and detect the first wavelength light. The light guide member (160) is provided between the light emitting means (120) and the second optical detection means (142). The optical axis of the first optical detection means (140) and the optical axis of the light emitting means (120) pass through the opening (101), and intersect each other outside of the housing (100). |
