Optical module and head-mounted display device

By reasonably allocating the positive and negative power of the lens in the optical module and setting a reasonable allocation ratio, the problem that optical modules in the prior art is difficult to achieve low distortion, low chromatic aberration, high definition and high reliability in augmented reality and virtual reality technologies, and a clear and efficient imaging effect is achieved.

CN119689717AActive Publication Date: 2025-03-25GOERTEK OPTICAL TECH CO LTD
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Patent Information

Application Number
CN202311243550.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-09-22
Publication Date
2025-03-25
Estimated Expiration
2043-09-22

AI Technical Summary

Technical Problem

The prior art is difficult to provide optical modules with low distortion, low chromatic aberration, high definition and high reliability in augmented and virtual reality technologies, especially in small sizes and specific use scenarios.

Method used

An optical module is designed, including a first lens group with positive optical power and a second lens group with negative optical power. By reasonably allocating the positive and negative optical power of the lens and setting a reasonable allocation ratio, distortion and chromatic aberration are reduced and chromatic aberration are achieved to achieve clear imaging.

Benefits of technology

Through reasonable power distribution and ratio settings, the distortion and chromatic aberration of the optical module is significantly reduced, and the imaging effect is achieved with high definition and high reliability, and is suitable for augmented reality and virtual reality technologies in small sizes and specific usage scenarios.

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Abstract

The embodiment of the invention provides an optical module and head-mounted display equipment. The optical module sequentially comprises a second lens group and a first lens group along the light transmission direction, the focal power of the first lens group is positive, and the focal power of the second lens group is negative; in the optical module, the sum of the focal power of all the positive lenses is phi positive, and the sum of the focal power of all the negative lenses is phi negative; the optical module satisfies the following conditions:-2.2 lt; phi positive / phi negative lt; and 1.9.
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