Claims
- 1. A stereoscopic eye fundus camera, comprising:
- illuminating optical means for applying a beam of light to the fundus of an eye which is to be tested through an objective lens;
- mark projecting optical means for projecting a mark onto said fundus; and
- stereoscopically photographing optical means, including first and second photographing optical systems, for simultaneously photographing, through said objective lens, said eye fundus and said mark which is projected onto the fundus by said mark projecting optical means.
- 2. The stereoscopic eye fundus camera according to claim 1, wherein said mark projecting optical means includes a movable spot diaphragm, and said first and second photographing optical systems each include a focusing lens for adjusting the focus thereof, said spot diaphragm being movable in accordance with adjustments of said focusing lens.
- 3. A stereoscopic eye fundus camera according to claim 2, wherein a diameter of a beam of light emitted from a spot of said spot diaphragm is predetermined to be smaller than that of a beam of illuminating light of said illuminating optical means at a point conjugate with the fundus.
- 4. A stereoscopic eye fundus camera, comprising:
- an illuminating optical system for applying a beam of light to the fundus of an eye which is to be tested through an objective lens;
- a mark projecting optical system for forming a mark image at a point conjugate with the fundus behind said objective lens; and
- a stereoscopically photographing optical system, including first and second photographing optical systems, for simultaneously photographing said mark image and the eye fundus through said first and second photographing optical systems.
- 5. The stereoscopic eye fundus camera according to claim 4, wherein said mark projecting optical system includes a movable spot diaphragm, and said first and second photographing optical systems each include a focusing lens for adjusting the focus thereof, said spot diaphragm being movable in accordance with adjustments of said focusing lens.
- 6. A stereoscopic eye fundus camera according to claim 5, wherein a diameter of a beam of light emitted from a spot of said spot diaphragm is predetermined to be smaller than that of a beam of illuminating light of said illuminating optical means at a point conjugate with the fundus.
Priority Claims (1)
Number |
Date |
Country |
Kind |
1-23155 |
Feb 1989 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 07/701,633, filed May 15, 1991, now abandoned, which is a continuation of Ser. No. 07/472,385, filed Jan. 31, 1990, now abandoned.
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4068932 |
Ohta et al. |
Jan 1978 |
|
4248505 |
Muchel et al. |
Feb 1981 |
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4396260 |
Takizawa et al. |
Aug 1983 |
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Continuations (2)
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Number |
Date |
Country |
Parent |
701633 |
May 1991 |
|
Parent |
472385 |
Jan 1990 |
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