Alexander Reis;Werner Ganahl;Lukas Bohler;Frank Schaeffel
发明人:
Alexander Reis,Werner Ganahl,Lukas Bohler,Frank Schaeffel
申请号：
US16101344
公开号：
US10531794B1
申请日:
2018.08.10
申请国别(地区):
US
年份:
2020
代理人:
摘要：
The current invention is a Photorefractive Flash Device and System. It is a device that can be clipped to any portable computing device to illuminate the pupil in a way, that allows a proper pupillary reflex. On the backside of the device is a photoreceptor, on the frontside—；facing the persons eyes are LEDs, centered around an opening where the lens of the camera looks through. A smartphone-app triggers the flashlight of the camera. The photoreceptor of the device senses this flash and triggers the six LEDs to flash sequentially within 200 milliseconds. 200 milliseconds is the time, the pupil needs to react. By staying under this 200 milliseconds, it can achieve high-quality pictures of the pupillary reflection, before the pupil contracts.
