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An imaging device and imaging method for simultaneously acquiring visible light and near-infrared bands based on a single image sensor

An image sensor and imaging device technology, applied in the field of optical imaging, can solve the problems of affecting imaging effect, poor equipment integration and portability, etc., and achieve the effect of high sensitivity and accuracy

Active Publication Date: 2021-11-26
SOUTH CHINA NORMAL UNIVERSITY
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the simultaneous imaging process, dual-cameras, dual-CCD cameras, and triple-cameras are used to receive and process visible light and near-infrared signals. Dual-channel or three-channel methods are required, but the time or space misalignment may affect the imaging effect, and the equipment Poor integration and portability

Method used

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  • An imaging device and imaging method for simultaneously acquiring visible light and near-infrared bands based on a single image sensor
  • An imaging device and imaging method for simultaneously acquiring visible light and near-infrared bands based on a single image sensor
  • An imaging device and imaging method for simultaneously acquiring visible light and near-infrared bands based on a single image sensor

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Embodiment Construction

[0028] The present invention will be described in further detail below.

[0029] figure 2 It is a schematic diagram of an imaging device of the present invention based on a single image sensor that simultaneously acquires visible light and near-infrared bands. The imaging device of the present invention can be used for medical imaging. As shown in the figure, the imaging device includes a lens module, an image sensor, an image processing module, a display unit, and a control module.

[0030] The light source includes a visible light source and an excitation light source. When the light source illuminates the object to be measured, it emits visible light and excitation light at the same time. The object to be measured reflects visible light and emits a fluorescent excitation band after being excited by the excitation light. In this embodiment, the indocyanine green fluorescent reagent is taken as an example, and a 785 nm laser is selected as the excitation light source. The ...

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Abstract

The invention relates to an imaging device and an imaging method for simultaneously acquiring visible light and near-infrared bands based on a single image sensor. The color filter used for the image sensor in the imaging device includes a plurality of filter arrangement units. When the sampling density of green and near-infrared filters reaches 3 / 8, and the sampling density of blue and red filters reaches 1 / 8, the light sheet arrangement unit can simultaneously acquire physically reflected visible light and excited near-infrared light , to obtain accurate color data. The notch filter is arranged before the image sensor containing the color green film to further realize the imaging accuracy. The imaging device is applied in medical imaging and realizes high sensitivity to target tissues.

Description

technical field [0001] The invention relates to the field of optical imaging, in particular to an imaging device and an imaging method for simultaneously acquiring visible light and near-infrared bands based on a single image sensor. Background technique [0002] Indocyanine green (ICG) has been widely used as a near-infrared imaging agent in clinical treatment. However, near-infrared light cannot be seen by the human eye, and requires a special optical imaging system. Near-infrared fluorophores are used as contrast agents. When near-infrared light of one wavelength irradiates the surgical field of view, the surgical field of view emits near-infrared light of another wavelength. Ingesting this emitted near-infrared light allows precise determination of the position of the near-infrared fluorophore. In early diagnosis or surgery, visible light is used to irradiate. When the light reaches human tissues and operating instruments, the reflected light reaches the image sensor of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/372H04N9/04
CPCH04N25/71H04N25/11H04N25/134
Inventor 朱凝刘琼魏波郑晓明邵军汪洋
Owner SOUTH CHINA NORMAL UNIVERSITY