Diffractive optical element and optical equipment

Abstract

The embodiment of the invention discloses a diffractive optical element and optical equipment, which are applied to the technical field of optical diffraction, and can solve the problem that the energy loss of diffractive optical signals is relatively large or the energy distribution between the diffractive optical signals is non-uniform when the diffractive optical element performs diffraction. The diffractive optical element comprises a substrate on which a plurality of rectangular setting areas are arranged in an array, and a plurality of optical microstructures, wherein the projection contours of the optical microstructures in the direction perpendicular to the substrate are located in the corresponding rectangular arrangement areas; each projection contour comprises a first boundary and a second boundary which are oppositely arranged along a first direction, and the distance between the first boundary and the second boundary along the first direction is gradually reduced and then gradually increased; and the first boundary and the second boundary satisfy an inverse proportional function formula.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of optical diffraction, and in particular, to a diffractive optical element and an optical device. Background technique [0002] At present, in the process of depth detection or three-dimensional detection through Time of Flight (TOF) or structured light, it is necessary to diffract the emitted light source signal through a diffractive optical element (DOE) to obtain multiple The beam diffracted light signal is calculated. When the existing diffractive optical element performs diffraction, there is a problem that the energy loss of the diffracted optical signal is large, or the energy distribution among the diffracted optical signals is not uniform. Contents of the invention [0003] Embodiments of the present invention provide a diffractive optical element and optical equipment, which are used to solve the problem of large energy loss of diffracted optical signals or uneven energy d...

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Problems solved by technology

[0003] Embodiments of the present invention provide a diffractive optical element and optical equipment, which are used to solve the problem of large energy loss of diffracted optical signals or uneven energy distribution between diffracted optical signals in the prior art when diffractive optical elements perform diffraction

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