COMPENSATING FOR POLARIZATION CHANGES
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专利名称：COMPENSATING FOR POLARIZATION CHANGES
发明人：GRAMATIKOV, Boris,GUYTON, David
申请号：US2020/026840
申请日：20200406
公开号：WO2020/206414A1
公开日：
20201008
专利内容由知识产权出版社提供专利附图：
摘要：An optical apparatus uses polarized light to interrogate birefringence properties of the retina to detect the fixation condition of the eye by sensing characteristic birefringence patterns of the retinal structures. Optical components, as
well as optional additional components, interfere with the polarization measurements by introducing unwanted retardance which alters the polarization state of the light entering the eye and of the light reaching the detection system. Compensating retarders are provided to nullify the effect of unwanted retardance in the forward and return light paths so the polarization states of the light entering the eye and the light reaching the detection system are not contaminated by the effects of the unwanted retardance. Mueller matrices are used to mathematically calculate the parameters for the compensating retarders for the unwanted retardance. A variable retarder system may also be provided to compensate for the corneal birefringence of the eye via feedback control.
申请人：THE JOHNS HOPKINS UNIVERSITY
地址：3400 N. Charles Street Baltimore, Maryland 21218 US
国籍：US
代理人：RYAN, Louisa
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