2results about How to "Small optical distortion" patented technology

This application relates to a display method, apparatus, and computer device. It involves acquiring an eye image of a user and extracting the user's biometric parameters from the image; obtaining the user's environmental depth information and current inertial measurement data, and determining the user's wearing posture parameters based on these data; inputting the biometric parameters and posture parameters into a preset optical distortion mapping model to determine the distortion compensation amount for correcting the user's vision in the current posture; correcting image frames in the original rendered image based on the distortion compensation amount to obtain the target display image, and then outputting the target display image to the display module of the target display device for display. This solves the dynamic adaptation problem, enables real-time correction of the display image, reduces optical distortion, and improves the user experience.

The application discloses a projection lens and a display system. The projection lens comprises a display device, a lens assembly and an aperture stop arranged in sequence along a preset direction. The lens assembly comprises a plurality of lenses arranged along the preset direction. Wherein, 6mm≤f≤10mm, 26°≤FOV≤40°, 3mm≤h≤6mm, 4mm≤R≤10mm, 9mm≤L≤15mm. f is the focal length of the lens assembly, FOV is the field of view of the lens assembly, h is the aperture of the aperture stop, R is the aperture of the lens assembly, and L is the distance between the display device and the aperture stop along the preset direction AA. By reasonably designing the parameters of the lens assembly and the aperture stop, and adjusting the distance between the lens assembly and the aperture stop, various aberrations of the projection lens can be effectively corrected, the projection lens has the advantages of high resolution and small optical distortion, and the requirements of high resolution and high-quality imaging of the AR display device can be met.