Patent ID: 11896309
Assignee: SUZHOU INSTITUTE OF BIOMEDICAL ENGINEERING AND TECHNOLOGY, CHINESE ACADEMY OF SCIENCES
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A

Claim 3:
4. The common beam scanning retinal imaging system according to claim 3, characterized in that, the small field-of-view relay module includes a transmissive telescope comprising a first lens and a second lens and having a magnification greater than 1, or a reflective telescope comprising a first spherical reflector and a second spherical reflector and having a magnification greater than 1; the small field-of-view relay module further includes a first focusing mechanism disposed between the two lenses or spherical reflectors of the telescope, wherein the first focusing mechanism includes two orthogonal planar reflection mirrors and is configured to reciprocate along a central optical axis of the telescope to compensate for a refractive error of the human eye;
the large field-of-view relay module includes a transmissive telescope comprising a third lens and a fourth lens and having a magnification less than 1, or a reflective telescope comprising a third spherical reflector and a fourth spherical reflector and having a magnification less than 1; the large field-of-view relay module further includes a second focusing mechanism disposed between the two lenses or spherical reflectors of the telescope, wherein the second focusing mechanism includes two orthogonal planar reflection mirrors and is configured to reciprocate along a central optical axis of the telescope to compensate for a refractive error of the human eye.