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 7:
8. The common beam scanning retinal imaging system according to claim 5, characterized in that, the wavefront sensor in the adaptive optics module is selected from a microprism array Hartmann wavefront sensor, a microlens array Hartmann wavefront sensor, a quadrangular pyramid sensor and a curvature sensor; and the wavefront corrector is selected from a deformable reflection mirror, a liquid crystal spatial light modulator, a micromachined membrane deformable mirror, a micro-electromechanical deformable mirror, a double piezoelectric ceramic deformable mirror and a liquid deformable mirror;
the second dichroic beam splitter splits the imaging light beam reflected from the first beam splitter by reflecting 5% of the light to pass through the optical filter and enter the wavefront sensor for wavefront aberration measurement and transmitting the remaining 95% of the light to the fifth dichroic beam splitter;
the optical filter is a broadband filter whose transmission wavelength band satisfies the selected wavelength λ1 for the small field-of-view high-resolution imaging, or is a combination of multiple narrowband filters whose combined transmission wavelength band satisfies the selected wavelength λ1 for the small field-of-view high-resolution imaging; and wherein the imaging light beam with the selected wavelength λ2 for the large field-of-view low-resolution imaging is completely blocked by the optical filter and does not enter the wavefront sensor;
the wavefront aberration detected by the wavefront sensor is processed by the control module, and the obtained wavefront control voltage is outputted to the wavefront corrector, so as to correct the wavefront aberration.