| 摘要 |
<p>PURPOSE: To provide a pyroelectric-type infrared detector which discriminates external disturbance and detects infrared rays highly reliably. CONSTITUTION: An infrared region detection part A to detect infrared-rays and a visual field region detection part B to detect visual light-rays are installed in one same package 8. While the infrared region detection part A has an infrared-ray transmissive window 11 through which at least light with wavelength near 10μm and a first pyroelectric body 21 set immediate under the infrared-ray transmissive window 11 and on the other hand, the visual field detection part B has a visual light transmissive window 12 to shield the light with wavelength at least 8μm and a second pyroelectric body 22 installed immediate under the visual light transmissive window 12.</p> |
