Structural light projection device and manufacturing method thereof

The invention provides a structural light projection device and a manufacturing method thereof, and the structural light projection device is suitable for deep camera shooting and comprises the following parts of a light emitter having a projection area at an emitting side, wherein the projection area is used for emitting light; an optical diffractive element having a diffractive area used for diffracting the light emitted by the light emitter; and a support member that supports the optical diffractive element at the emitting side of the light emitter to make the projection area correspond tothe diffractive area, so that the light emitted by the projection area of the light emitter is directly diffracted by the diffractive area of the optical diffractive element. 一结构光投射装置及其制造方法。结构光投射装置，适用于深度摄像，包括：一光发射器，其中所述光发射器于一发射侧具有一投射区域，其中所述投射区域用于发射光；一光学衍射元件，其中所述光学衍射元件具有一衍射区域，用于衍射所述光发射器发射的光；以及一支撑件，其中所述支撑件支撑所述光学衍射元件于所述光发射器的发射侧，以使所述投射区域和所述衍射区域对应，从而所述光发射器的投射区域发射的光直接被所述光学衍射元件的衍射区域衍射。