| 摘要 |
<p>PROBLEM TO BE SOLVED: To extend the wavelength range where image pickup is made available. SOLUTION: This image pickup unit is provided with a solid-state image pickup element 4 in a CCD structure constituted of a photosensor having sensitivity for a visible light and a camera lens 8 for converging the light from a subject to a light receiving face 6 of the solid-state image pickup element 4, and a supporting body 10 applied with fluorescent pigment is arranged between the solid-state image pickup element 4 and the camera lens 8. The supporting body 10 is constituted of a transparent glass plate, and the plate face is arranged so as to face the light receiving face 6 of the solid-state image pickup element 4, and organic fluorescent pigment for emitting visible light at the time of receiving an ultraviolet ray is applied to the surface, and a thin film 12 with the organic fluorescent pigment is formed. When an ultraviolet ray enters through the camera lens 8 to the thin film 12 with the organic fluorescent pigment, the thin film 12 with the organic fluorescent pigment generates visible light having strength corresponding to the strength of an ultraviolet ray. This visible light is made incident to the light receiving face 6 of the solid-state image pickup element 4, and photoelectric converted with sufficient sensitivity by the photosensor of the solid-state image pickup element 4. Therefore, image pickup is made available even in the ultraviolet ray range.</p> |
