Grating structure and processing method therefor, lens and head-mounted display device
AssigneeGoertek Optical Technology Co., Ltd.
InventorsWenqiang Zhang, Yi Rao
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Abstract
Disclosed are a grating structure and a processing method therefor, a lens, as well as a head mounted display. The grating structure includes a base and a plurality of grating portions provided on a surface of the base, the plurality of grating portions are arranged at intervals along an extension direction of the base, a surface of each of the grating portions are coated with an enhancement layer whose refractive index is greater than refractive index of the grating portions, and the enhancement layers coated on surfaces of at least two of the grating portions differs in thickness.
Claims14
A grating structure, comprising:
- a base, and
- a plurality of grating portions provided on a surface of the base, the plurality of grating portions being arranged at intervals along an extension direction of the base,
- wherein a surfaces of each of the plurality of grating portions comprises an enhancement layer whose refractive index is greater than a refractive index of the plurality of grating portions, such that the enhancement layers of a first of the plurality of granting portions is different in thickness than the enhancement layer for a second of the plurality of grating portions.
Dependencies are inferred from the claim text.