MUMBAI, India, Oct. 31 -- Intellectual Property India has published a patent application (202414100843 A) filed by Zhejiang Sunny Optics Co. Ltd., Yuyao City, China, on Dec. 19, 2024, for 'visual optical system.'
Inventor(s) include Zhang, Xiaobin; Jin, Yinfang; and Zhao, Liefeng.
The application for the patent was published on Oct. 31, under issue no. 44/2025.
According to the abstract released by the Intellectual Property India: "Embodiments of the present disclosure disclose a visual optical system, including a first optical system and a second optical system, the first optical system sequentially includes: a first element group, a second element group and a third element group along a first optical axis from a near-eye side to a display side, the first element group including a first lens element, a reflective polarizing element and a quarter wave plate; the second element group including a second lens element; and the third element group including a third lens element; and the second optical system sequentially includes: a first lens having a refractive power, a second lens having a positive refractive power, a third lens having a positive refractive power and a fourth lens having a refractive power along a second optical axis from a first side to a second side; where, a distance TDm from a first side surface of the first element group to a second side surface of the third element group on the first optical axis and a distance TDe from a first surface of the first lens to a second surface of the fourth lens on the second optical axis satisfy: 5.0TDm/TDe15.0."
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