| The eyes are the main organ to receive light and outside information, which physiological parameters will directly affect the exchange of information, and then the patient's life and work has been affected. The physiological changes of vascular in fundus are basic that disease examination, so fundus examination is important for clinical diagnosis and inspection. According to the requirements of clinical fundus examination, the portable and digital ophthalmoscope based on traditional direct ophthalmoscope and fundus camera was designed. Lighting System generates ring-liked illuminant by use of hollow reflector and it avoids corneal reflection and stray light. Imaging system was designed and optimized by ZEMAX, and was completed by sphere which increased performance-price ratio. The design of compensating mirror makes fundus images radiate in parallel. The system meet the requirements of micro-devices and digital processing, which complete fundus display, store and image processed. |
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