To provide a biological information measuring device capable of reducing noise attributed to a body motion.SOLUTION: A biological information measuring device includes: a housing that accommodates a light emitting part for emitting a coherent light and a light receiving part inside, and includes a lid part through which the coherent light passes； a light transmission layer located outside the lid part, through which the coherent light passes； and a light shielding film that prevents the coherent light from being reflected by the light transmission layer and reaching the light receiving part.SELECTED DRAWING: Figure 3【課題】体動に起因するノイズを低減することが可能な生体情報計測装置を提供すること。【解決手段】コヒーレント光を出射する発光部と受光部とを内部に収容し、前記コヒーレント光が透過する蓋部を有する筐体と、前記蓋部の外側に位置し前記コヒーレント光が透過する光透過層と、前記コヒーレント光が前記光透過層で反射して前記受光部へ到達すること防ぐ遮光膜と、を備える、生体情報計測装置を提供する。【選択図】図３
