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Simulation of an improved galilean telescope optical system for correction of moderate and high hyperopia
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DOI：10.1016/j.pdpdt.2026.105559.png)
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Abstract
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• An improved Galilean telescope optical system based on zero-diopter air lens diopter splitting is innovatively proposed for moderate and high hyperopia (+3.00 D ∼ +10.00 D) correction. • The system decomposes total hyperopic diopter into basic correction and residual telescopic diopter, realizing effective hyperopia correction merely via **low-power positive lenses**, eliminating the drawbacks of thick and heavy high-diopter traditional positive lenses. • The optimal magnification range of **1.2×–1.5×** achieves ultra-compact structure, wide field of view (>42°), negligible optical distortion (<1.4%) and high-resolution imaging with MTF maintained above 0.45 at 30 lp/mm. • Magnification over 2.0× causes sharp contraction of peripheral visual field and obvious rise of distortion, greatly reducing wearing comfort and practical application value. • Integrates **refractive error correction and retinal imaging magnification** innovatively, breaking the limitation of traditional Galilean telescopes only for temporary low-vision observation.
Keywords:
Galilean telescope
Optical system design
Moderate and high hyperopia
Refractive correction
Visual acuity
Optical magnification
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