Visible light and near-infrared light synthesis imaging lens assembly and system of endoscope

By designing the combination of adapters, spectral prisms, dimmers and photosensitive elements in the endoscope, the imaging quality problem caused by spectral differences in endoscope imaging is solved, and synchronous imaging of visible and near-infrared light is achieved, and the imaging quality is improved.

CN222622924UActive Publication Date: 2025-03-18BEIJING FANXING GUANGDIAN MEDICAL TREATMENT EQUIP
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Patent Information

Application Number
CN202421048905.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-14
Publication Date
2025-03-18
Estimated Expiration
2034-05-14

AI Technical Summary

Technical Problem

In endoscopic imaging, the spectrum of near-infrared light and visible light is different, resulting in inconsistent optical path difference and imaging size in the imaging optical path, affecting the imaging quality.

Method used

An endoscopic visible and near-infrared light synthesis imaging lens assembly is designed, including an adapter, a spectroscopic prism, a dimmer and a photosensitive element. The beam is divided into visible and near-infrared light through a spectroscopic prism, and the spot size and optical path of the beam are adjusted through the dimmer to synchronize imaging.

Benefits of technology

The imaging quality of the endoscope is improved. By adjusting the dimming device, the imaging sizes of visible light and near-infrared light are consistent, and the imaging is synchronized, reducing the optical path difference and improving the clarity of the imaging.

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Abstract

The embodiment of the utility model discloses an endoscope visible light and near-infrared light synthesis imaging lens assembly and system, relates to the field of medical endoscope images, and is convenient for improving the imaging quality of an endoscope. The lens assembly comprises an adapter, a beam splitter prism, a dimming piece and a photosensitive element. The adapter is configured to refract a light beam entering from the leading-in surface and then emit the light beam from the leading-out surface; the beam splitter prism comprises a first prism and a second prism, the beam splitter prism is configured to divide a light beam emitted by the lead-out surface into a first light beam and a second light beam, the first light beam is visible light, and the second light beam is near-infrared light; the dimming piece is arranged on a propagation path of the light beam emitted from the beam splitter prism, and the dimming piece is configured to adjust the spot size or the optical path of the light beam penetrating through the dimming piece; the first photosensitive element receives the first light beam to form a first image, and the second photosensitive element receives the second light beam to form a second image.
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