A lighting fixture has been developed with a built-in PIR sensor which detects human body temperature and movements and switches on the light in response. The fixture has been given a significantly improved appearance by locating the detection unit of the sensor inside its globe to make the detection unit invisible when viewed from outside. Lighting fixtures with human body sensors are a logical response to the increasing demand for "energy saving, ease and convenience" and "safety and security", but there has also been a demand for improvements in design to allow concealment inside the fixture of the sensor's detection unit. The globe, made of polyethylene resin, has been newly developed to contain the detection unit. It allows through more than 40 % of the far infrared band (500 to 1500 nm in wavelength) emitted by the human body. A miniature multi-lens with far higher infrared light gathering power than the conventional version has been developed to secure the target range of detection. Also, the lens material has been given a specific color to filter out any visible to near infrared light emitted from the fluorescent lamp itself in the globe.
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