Design method of projection type helmet objective lens capable of correcting eye optics system aberration

Abstract

The invention discloses a design method of a projection type helmet objective lens capable of correcting eye optics system aberration. The method is characterized in that in helmet objective lens design, a phase plate with identical aberration with the eye optics system of a helmet wearer and an ideal lens are used to replace the eye optics system of the helmet wearer, the aberration of the eye optics system of the helmet wearer is corrected, and the helmet wearer is allowed to obtain high-resolution and clear information image of the outside world on the retina through a helmet. In addition, the method solves the problem that the structural parameters of the eye optics system of the helmet wearer are hard to acquire.

Description

technical field [0001] The invention relates to the field of projection helmet objective lenses, in particular to a design method of a projection helmet objective lens for correcting eye optical system aberrations. Background technique [0002] The external information image presented on the projected helmet microdisplay enters the human eye after passing through the helmet objective lens, beam splitter and reflective screen, and is imaged on the retina of the human eye through the human eye optical system, so that the human eye can see the external information. Therefore, the external information image presented on the projection helmet microdisplay will pass through the helmet objective lens and the human eye optical system. First of all, if there is aberration in the objective lens optical system of the projection helmet, the imaging quality will be reduced, that is, the resolution of the image will be reduced, and the image will become blurred and unclear. Secondly, the...

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Problems solved by technology

[0003] Fan Haiying used the eye model to replace the human eye optical system, and designed a projection helmet objective lens based on the eye model, which corrected the aberration of the eye model, but the structural parameters of the eye model are the statistical average of many human eyes, not the helmet wearer. The structural parameters of the eye optical system, so the aberration of the eye model is not the aberration of the helmet wearer's eye optical system, and the helmet objective lens designed in this way does not really correct the aberration of the helmet wearer's eye optical system

In order to correct the aberration of the helmet wearer's eye optical system in the design of the projected helmet objective lens, the structural parameters of the helmet wearer's eye optical system must be obtained, but it is difficult to obtain the actual structural parameters of the human eye optical system. The relevant equipment for testing the structural parameters of the human eye lens can only be measured by the corneal topography of the human eye detected by the corneal topography instrument, and the length of each part of the eye axis detected by the BMF-200 ophthalmology A / B ultrasonic diagnostic instrument. The wavefront aberration of the eye optical system measured by the Mann-Shack wavefront sensor is the optimization target, and the optical design software is used to optimize the structural parameters of the living human eye lens, and the optimized wavefront aberration of the eye optical system is consistent with the measured The lens structure parameters are very difficult

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