PUPIL DETECTION LIGHT SOURCE DEVICE, PUPIL DETECTION DEVICE AND PUPIL DETECTION METHOD

摘要

A pupil detection light source device includes an aperture disposed to face a subject to allow light from a pupil of the subject to pass therethrough, an illumination light for obtaining a light pupil image toward the subject from the inside or the vicinity of the aperture when seen from the subject, and an illumination light for forming a reflection image with glasses obtained by canceling a reflection image with glasses of the light pupil image using an image difference toward the subject from the inside or the vicinity of the aperture when seen from the subject.

主权项

1. A pupil detection light source device which is used for detecting a pupil of a subject based on a light pupil image and a dark pupil image of the subject, and irradiates toward a face of the subject with illumination light for obtaining the light pupil image and the dark pupil image, the pupil detection light source device comprising:
an aperture disposed to face the subject to allow light from a pupil of the subject to pass therethrough, and provided in a camera; a first light source configured to irradiate toward a face of the subject with illumination light for obtaining the light pupil image by the camera from at least one of inside or vicinity of the aperture when seen from the subject; a second light source configured to irradiate toward the face of the subject with illumination light for forming a reflection image with glasses to an extent capable of canceling the reflection image with glasses of the subject in the light pupil image obtained by the camera by using an image difference, from a position which exists in at least one of the inside or the vicinity of the aperture when seen from the subject, and at which a distance from a center of the aperture is equal or large in comparison to a position of the first light source; and a third light source configured to irradiate toward the face of the subject with illumination light for obtaining the dark pupil image by the camera from a position spaced apart from the aperture when seen from the subject.