| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ocular optical characteristic measuring apparatus capable of directly performing accurate measurement without the need of using a conversion function for converting a measured value obtained by using infrared light to a measured value obtained by using visible light and without giving so much glare to a subject even when the visible light is used. <P>SOLUTION: The ocular optical characteristic measuring apparatus comprises: a projection system 1 for selectively projecting the infrared light and the visible light to the fundus F of an eye to be examined and forming a first target image T and a second target image T by the infrared light at the fundus F of the eye to be examined; a preliminary measurement system 21A for receiving reflected light from the fundus F of the eye to be examined when the first target image T by the infrared light is projected to the fundus F of the eye to be examined and roughly detecting the refractivity of the eye 2 to be examined; focusing means 20 and 22 for roughly focusing the second target image T on the fundus of the eye to be examined on the basis of the detected refractivity; and a fine measurement system 21B for receiving a reflected luminous flux from the fundus F of the eye to be examined of the second target image T by the visible light projected in a roughly focused state onto the fundus of the eye to be examined by the focusing means 20 and 22 and measuring the ocular optical characteristics of the eye to be examined. <P>COPYRIGHT: (C)2007,JPO&INPIT |
