Title:
SCANNING OPTICAL FUNDUS IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/132588
Kind Code:
A1
Abstract:
Provided is a scanning optical fundus imaging device enabling the acquisition of bright, favorable optical fundus images. A scanning optical fundus imaging device 100 is provided with: an objective lens system 60 having a front group Gr1 and a rear group Gr2 with an optical fundus conjugate plane EC as a boundary; and a first and a second scanning device 30, 50 that are a scan unit for two-dimensionally scanning projected light ML from a light source unit 10 over the optical fundus EB of an eye under test EY. Between the second scanning device 50 and a pupil plane PS of the eye under test EY, principal rays of respective projected light fluxes that have different scanning angles do not intersect over an optical axis AX2. The front group Gr1 is configured to include two positive lenses. The rear group Gr2 is configured to include at least one negative lens and at least one positive lens. At least one positive lens of the front group Gr1 has an aspheric shape.
Inventors:
SUZUKI TAKAYOSHI (JP)
KAKUTANI YOSHIHIRO (JP)
KAKUTANI YOSHIHIRO (JP)
Application Number:
PCT/JP2020/048796
Publication Date:
July 01, 2021
Filing Date:
December 25, 2020
Export Citation:
Assignee:
KOWA CO (JP)
International Classes:
G02B21/24; A61B3/10
Foreign References:
| JP2019526367A | 2019-09-19 |
Attorney, Agent or Firm:
FUKUDA, Mitsuhiro et al. (JP)
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