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Gazing type digital trandport driver interface (TDI) short wave infrared glimmering imager and imaging method

A short-wave infrared and low-light imaging technology, which is applied in TV, color TV, image communication, etc.

Active Publication Date: 2013-04-03
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

[0006] The various TDI methods in the past, whether the detector itself completes TDI or digital domain TDI, all belong to line-scanning TDI, so they can only be used for high-speed optical-mechanical scanning imaging, such as airborne and space-borne remote sensors

Method used

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  • Gazing type digital trandport driver interface (TDI) short wave infrared glimmering imager and imaging method
  • Gazing type digital trandport driver interface (TDI) short wave infrared glimmering imager and imaging method
  • Gazing type digital trandport driver interface (TDI) short wave infrared glimmering imager and imaging method

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Embodiment Construction

[0045] According to the present invention figure 1 Shown system block diagram, the present invention includes:

[0046] Short-wave infrared lens: use a small F-number lens to enhance the focus, and other parameters are selected according to the required resolution and observation distance. This embodiment adopts OB-SWIR200 / 2.4 of OPTEC Company of Italy, with a focal length of 200 mm and an F number of 2.4.

[0047] Short-wave infrared LED and driving circuit (2): Several supplementary lighting LED lights are placed around the lens, and the light-emitting direction is consistent with the observation direction of the lens. The number of LEDs can be flexibly increased or decreased according to the observation environment. The wavelength of the LED light used can cover various bands of short-wave infrared, and the information is relatively complete when observing the target. The drive circuit can be driven by a constant voltage or constant current source as required. This embod...

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Abstract

The invention discloses a gazing type digital trandport driver interface (TDI) short wave infrared glimmering imager and an imaging method. The imager comprises a short wave infrared camera lens, a short wave infrared light-emitting diode (LED) lamp, a detector assembly and a driving acquisition circuit, an image data buffer, a master control system with a digital whole-frame TDI module and a storing and displaying device. The digital whole-frame TDI module performs whole-frame time delay integral computation on image data output by a detector on a digital domain in real time. Night monitoring of a foundation platform is mostly simple and reliable gazing imaging, so that signal to noise ratio cannot be improved by adopting the existing alignment scanning TDI technology. The digital whole-frame TDI technology is suitable for gazing imaging, can achieve high TDI levels, remarkably improves glimmering imaging quality, and can flexibly adjust dynamic range of images. The gazing type digital TDI short wave infrared glimmering imager and the imaging method are suitable for night security and protection monitoring requiring certain concealment and vehicle-mounted or handheld night patrol application of dangerous areas.

Description

Technical field: [0001] The invention relates to an infrared imager, in particular to a staring digital TDI short-wave infrared low-light imager and an imaging method, which are applied to the fields of short-wave infrared imaging and low-light imaging in the field of photoelectric imaging. Background technique: [0002] Low-light imaging technology has a wide range of application requirements in security, industry, scientific research and other fields. The low-light imager uses moonlight, starlight and other night sky glow, as well as the instrument's own supplementary light, to collect and image the reflected light signal of the target. [0003] The working band of the short-wave infrared imager is generally 0.9μm~2.5μm. Its imaging principle is the same as that of the visible light imaging of the human eye. It captures the reflected light of the target, so it is closer to visual imaging than the infrared thermal imager that captures the thermal radiation imaging of the ta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/351H04N5/355H04N5/357G01J5/10
Inventor 郎均慰王跃明庄晓琼王晟玮鲍智康肖喜中陈杨
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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