SCANNING LASER OPHTHALMOSCOPE

[Task] To satisfactorily obtain a front image of a fundus. [Means for Resolution] SLO 1 includes an irradiation optical system 10 including a light source 11, a scanning unit 16 for scanning a fundus Er with laser light emitted from the light source 11, and an objective lens system 17 that is dispos...

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1. Verfasser: MIZUNO, Katsuyasu
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:[Task] To satisfactorily obtain a front image of a fundus. [Means for Resolution] SLO 1 includes an irradiation optical system 10 including a light source 11, a scanning unit 16 for scanning a fundus Er with laser light emitted from the light source 11, and an objective lens system 17 that is disposed between a subject's eye E and the scanning unit 16 so as to form a pivot point P of the laser light guided from the scanning unit 16, and a light receiving optical system 20 that shares the objective lens system 17 with the irradiation optical system 10, and that has a light receiving element for receiving light from the fundus Er irradiated with the laser light. Here, the objective lens system 17 includes a first lens system 17a for bending the laser light toward the pivot point P and a second lens system 17b disposed between the first lens system 17a and the scanning unit 16. The second lens system 17b has a tilted lens disposed to be tilted to an optical axis L1, and a lens surface on the light source side in the tilted lens has a curvature radius larger than that of a lens surface on the light source side in the first lens system 17a.