一種用於增強藍光光盤和中國高清光盤衍射效率的透鏡
- Summary
- The utility model relates to a lens used for improving the diffraction efficiency of a blue-ray disc and a China high definition disc, which comprises a first lens surface (1) and a second lens surface (2), wherein the first lens surface is a free curved surface, and the second lens surface is an aspheric surface; the first lens surface and the second lens surface are used for focusing incident light into a focal zone; and the focal zone comprises an information recording layer (31) focused on the blue-ray disc, and an information recording layer (41) focused on the China high definition disc. Due to a phase control structure, the diffraction efficiency of the lens corresponding to the blue-ray disc and the China high definition disc can be improved, the energy loss is reduced, and the stray light is improved.
- Supplementary Information
- Inventor: DU, Xue | LI, Rong-bin | LI, Li-hua | WANG, Wen-kui
Priority Number: CN202258325U
IPC Current: G11B00071372 | G11B00071353
Assignee Applicant: The Hong Kong University of Science and Technology
Title: Lens used for improving diffraction efficiency of blue-ray disc and China high definition disc | A kind of used for reinforcing blue-ray disc and the Chinese high definition CD diffraction efficiency
Usefulness: Lens used for improving diffraction efficiency of blue-ray disc and China high definition disc | A kind of used for reinforcing blue-ray disc and the Chinese high definition CD diffraction efficiency
Summary: Lens structure for reinforcing Blu-ray disk and high definition compact disk (CD).
Novelty: Lens structure for reinforcing high definition compact disk (CD), has free curved lens surface and aspheric lens surface that are provided to focus incident light to focusing area
- Industry
- Electronics
- Sub Category
- 3C/Gadgets
- Others
- LEE Wing Bun
TO Sandy
LI Lihua
WANG Wen Kui
- Country/Region
- Mainland China
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