| 摘要 |
A binocular multiplexing device for a single-channel ophthalmological instrument for objective measurement of at least one vision parameter of a subject, the ophthalmological instrument including elements for generating a single light beam, elements for collecting a measurement beam by reflecting and/or refracting the light beam against the subject's eye and a sensor associated with the single measurement channel. The binocular multiplexing device includes optical separation first elements for receiving an image beam originating from a stimulus target and separating the image beam into a right and left ocular stimulation beam; optical switching elements for switching the single light beam selectively onto a right or left monocular light beam's optical path to form, after reflection and/or refraction by the eye in question, a right, respectively left, ocular measurement beam, and optical combination elements for superimposing the right, respectively left, ocular stimulation beam, and the right, respectively left, monocular light beam. |
| 主权项 |
1. A binocular multiplexing device (100) for an ophthalmological instrument (110) having a single channel for objective measurement of at least one visual parameter of a subject, said ophthalmological instrument comprising means for generating a single illuminating beam (15), means for collecting a measuring beam (55) generated by reflection and/or refraction of said illuminating beam from an eye of the subject, and a sensor associated with said single measuring channel, said binocular multiplexing device comprising:
first optical splitting means (4, 25) able to receive a stimulating image beam (14) issued from a stimulus test pattern and intended to stimulate accommodation by the subject, said first optical splitting means (4, 25) being able to split said stimulating image beam (14) into a right ocular stimulating beam (14a) and a left ocular stimulating beam (14a) so as to stimulate accommodation by the right eye (13) and left eye (12) of the subject simultaneously; second optical splitting means (5, 140, 24, 43, 44, 45, 46) able to receive said single illuminating beam (15) and to split said single illuminating beam (15) into a right monocular illuminating beam (15b) and a left monocular illuminating beam (15a), said right monocular illuminating beam (15b) and left monocular illuminating beam (15a) being intended to illuminate the right eye (13) and the left eye (12) of the subject, respectively, in order to form, after reflection and/or refraction from the eye (12, 13) in question, a right ocular measuring beam (55b) and a left ocular measuring beam (55a), respectively; optical switching means (5, 24, 43, 44, 45, 46) able to receive said right ocular measuring beam (55b) and said left ocular measuring beam (55a) and to steer in sequence said right ocular measuring beam (55b) and said left ocular measuring beam (55a) into said single measuring channel, respectively; first optical combining means (7, 29) able to superpose the right ocular stimulating beam (14b) and the right monocular illuminating beam (15b), and first optical means for directing the right ocular stimulating beam (14b) and the right monocular illuminating beam (15b) toward the right eye (13); and second optical combining means (6, 28) able to superpose the left ocular stimulating beam (14a) and the left monocular illuminating beam (15a), and second optical means for directing the left ocular stimulating beam (14a) and the left monocular illuminating beam (15a) toward the left eye (12). |
