公开(公告)号：US10442346B2

公开(公告)日：2019-10-15

申请号：US15824587

申请日：2017-11-28

Applicant: Young Optics Inc.

Inventor： Wei-Hung Tsai ,  Ya-Ling Hsu ,  Hung-Chi Su

IPC: B60Q1/32 ,  B60Q1/24 ,  F21S43/14 ,  F21S43/20

Abstract: A lamp device includes a light source, a slide and a projection lens assembly. The light source generates an illumination beam, and the slide is disposed in a light path of the illumination beam. The slide has a profile image layer and a gradient layer, and the profile image layer and the gradient layer are disposed on two opposite sides of the slide. The profile image layer converts the illumination beam into profile image light without gradients, and the gradient layer converts the illumination beam into gradient light. The projection lens assembly receives and projects the gradient light and the profile image light.