Method and apparatus for optimizing a lens of a virtual reality device, and computer readable storage medium

An apparatus for optimizing a lens of a virtual reality device comprising:

• a setter for setting an optimization objective and optimization variables for imaging with a lens;
• and
• an optimization processor for performing optimization processing on the imaging of an object point through the lens by the optimization variables, and obtaining a lens parameter value by which the imaging result is in accordance with the optimization objective, an image surface of the imaging of the object point through the lens being an image surface on which the astigmatism is less than a preset threshold,
• wherein the aberration comprises all of:
• field curvature, astigmatism, distortion, dispersion, spherical aberration and coma,
• wherein the optimization objective comprises:
• the aberration of the imaging of the object point through the lens meeting a first preset condition, comprising all of:
• the positions of meridional field curvature and sagittal field curvature of the imaging of the object point being close to each other, such that the astigmatism is less than a preset threshold,
• the distortion and dispersion of the imaging of the object point being less than a preset threshold within a preset field of vision, and
• the spherical aberration and the coma of the imaging of the object point on the image surface being less than a preset threshold,
• or,
• the aberration of the imaging of the object point through the lens meeting the first preset condition comprising:
• a weighted value of the field curvature, astigmatism, distortion, dispersion, spherical aberration and coma of the imaging of the object point through the lens being less than a preset aberration threshold,
• wherein light of the object point comprises red light, green light and blue light, and the optimization objective further comprises one or more of the following:
• the root-mean-square radius of the red light spot, the green light spot and the blue light spot of the imaging of the object point on the image surface being no larger than 148.320 μm which is the root-mean-square radius at the maximum field of view of 45°;
• and
• the geometric radius of the red light spot, the green light spot and the blue light spot of the imaging of the object point on the image surface being no larger than 302.664 μm which is the geometric radius at the maximum field of view of 45°.