The minus filter works under the irradiation of major light, so the materials must have low absorption and high anti-energy threshold.
考虑到滤光片工作在强光辐照条件下，所以选用的材料必须具有低的吸收和高的抗能量阈值。
A filter including a base film, a plurality of light absorption units spaced apart from one another at regular intervals in the base film, and a focusing layer on the base film.
一种滤光器，包括基膜、在该基膜中彼此等间隔隔开的多个光吸收单元和在该基膜上的聚焦层。该聚焦层可以包括与该光吸收单元对准的多个长脊或微透镜。
A filter including a base film, a plurality of light absorption units spaced apart from one another at regular intervals in the base film, and a focusing layer on the base film.
一种滤光器，包括基膜、在该基膜中彼此等间隔隔开的多个光吸收单元和在该基膜上的聚焦层。该聚焦层可以包括与该光吸收单元对准的多个长脊或微透镜。
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