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 5:
6. The common beam scanning retinal imaging system according to claim 5, characterized in that, the light source module includes at least two light sources, wherein the lights emitted from the at least two light sources are coupled by an optical-fiber coupler and go into a collimator to be collimated into a parallel light beam, or wherein the lights emitted from the at least two light sources are collimated by corresponding collimators respectively into parallel light beams which are then combined by a dichroic beam splitter to enter the optical path;
the light emitted by the light source module includes light with a wavelength Xi of 600 nm-850 nm and light with a wavelength λ2 of 900 nm-1000 nm, wherein the light with the wavelength λ1 is used for the small field-of-view high-resolution imaging, and the light with the wavelength λ2 is used for the large field-of-view low-resolution imaging;
the ring-shaped LED array includes at least three LED beads arranged along a ring at equal intervals, the hollow part of the ring-shaped LED array has a light-transmitting aperture no less than the diameter of the imaging light beam; the wavelength of the light emitted by the LED beads is λ3 which is greater than 1000 nm;
the LED array of the sight beacon module includes LED beads arranged in an equally spaced array and emitting light with a wavelength λ4 in a range of 380 nm-760 nm in the visible light band, and the difference between λ4 and either of λ1, λ2 is at least 50 nm.