"HEED-HARP" technology may be used for endoscopic cameras to greatly improve performance

Pioneer will venture into the medical device market, first of all to develop cameras for endoscopes. At the end of October 2012, Pioneer and Otsuka Pharmaceutical's medical device manufacturer, Otsuka Medical Equipment Co., reached a business cooperation agreement. The two parties will cooperate to develop an endoscope using the Pioneer camera. The goal is to launch the market through Otsuka Medical Devices in 2014.

The HARP camera board exhibited at the NHK Technical Research Exhibition in 2005

The biggest feature is "high sensitivity"

Pioneer intends to use "HEED-HARP" technology in the endoscope camera to achieve a significant difference from other companies' products (Figure 1). HEED-HARP combines the cold cathode type flat electron source "HEED" (high efficiency electron emission device) developed by the company and the ultra-high sensitivity avalanche rushing amorphous developed by the NHK Broadcast Technology Institute photoconductor).

HEED-HARP device plays a key role

As shown in Fig. 1 (b), when light enters from glass, an electron hole pair corresponding to the amount of light is generated inside the HARP film with a-Se (amorphous selenium) as the main component. The electron holes are avalanche amplified in the HARP film. The electron holes are neutralized by the electrons released by HEED, and an image can be formed by detecting the current flowing at this time. The technology has also been shown before at the "NHKNHK Technology Research Exhibition" and other occasions, and has received great attention.

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