OPTICAL SYSTEM INCLUDING ANGLE CONTROL FILM

• Main Authors: YANG ZHAOHUI, AASTUEN, DAVID, J., W, ROEHRIG MARK A, WHEATLEY JOHN A, MOLLENHAUER, SERENA, L, ACHARYA BHARAT R
• Format: Patent
• Language: Chinese; English
• Published: 23.02.2024
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

An optical system includes a lens layer having a first major surface including a first microlens and a second microlens, and a first light absorbing layer. The light absorbing layer defines a first through opening and a second through opening, wherein the first microlens and the second microlens have a one-to-one correspondence relationship with the respective first through opening and second through opening. Each pair of the first microlens and the first through opening centered on the first optical axis forms a first angle with a normal line of the first light absorbing layer. A second angle different from the first angle is formed between each pair of the second microlens and the second through opening centered on the second optical axis and the normal of the first light absorbing layer. The light source emits light incident on one side of the first main surface. The emitted light includes a first light beam and a second light beam carrying respective first and second information and propagating substantia