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Sight line detector

阅读:795发布:2023-01-12

专利汇可以提供Sight line detector专利检索,专利查询,专利分析的服务。并且PURPOSE: To obtain the sight line of a patient under a satisfactory measurement environment by illuminating the eye ball of the patient with a luminous flux having a prescribed light quantity distribution from a nilluminating means.
CONSTITUTION: An eye ball 101 of the patient is illuminated by illuminating means 4a-4c, 6a-6c and 8, and image-forming positions on the prescribed surfaces of both images of a cornea reflected image (d) and iris 3 images (a) and (b) of the eye ball 101 based on a reflected light from a cornea 1 of the eye ball 101 of the illuminating means are detected by detecting means 7 and 9. At the time of obtaining the sight line of the patient by an arithmetic means 10 by utilizing output signals from the detecting means, for the illuminating means, respective elements are composed so that the light quantity distribution in the illumination area of the eye ball can be made into a prescribed distribution. As a result, without increasing the optical output of the light source too much and without permitting the patient to visually recognize the light source to be one part of the illuminating means, the sight line of the patient is obtained under the satisfactory measurement environment.
COPYRIGHT: (C)1990,JPO&Japio,下面是Sight line detector专利的具体信息内容。

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