Method for control optical system in vehicle

Abstract

|ΔT1| ＞ |ΔT3|。 The present disclosure provides a method for controlling an optical system in a vehicle, which includes providing an optical structure with a top region, a middle region and a bottom region, defining a first light condition and a second light condition measured at different times, wherein the top region has a first light transmittance difference ΔT1 between the first light condition and the second light condition, and the middle region has a second light transmittance difference ΔT2 between the first light condition and the second light condition, the bottom region has a third light transmittance difference ΔT3 between the first light condition and the second light condition, wherein the following equation is satisfied: |ΔT1| ＞ |ΔT2| or |ΔT1| ＞ |ΔT3|.

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