Abstract: A temperature calibration device includes a thin-film thermocouple element having a pair of thin films made of dissimilar metals, connected to each other at a temperature measurement contact on one end side, and having a pair of external contacts at the other end, a pair of input terminals made of an electroconductive material and connectable to the pair of external contacts, a pair of output terminals made of an electroconductive material and connectable to a pair of conducting wires linked to a temperature display device calculating a temperature by using an input voltage and displaying the calculated temperature, computation circuit for calibrating a detected value of a voltage between the input terminals and computing a calibrated voltage, and voltage applicator for outputting the calibrated voltage between the output terminals. The calibrated voltage is output to the temperature display device.

Abstract: In the camera 10 having an ultraviolet light generating portion 16, the influence of the ultraviolet light upon an image to be taken is suppressed. A camera 10 for taking an image possesses an image-pickup portion 24 which takes an image of a subject; a hydrophilic filter 14 formed so that a hydrophilic surface is exposed on an outer surface of the camera, and transmitting a light entering from the subject to said image-pickup portion; and an ultraviolet light generating portion 16, which irradiates an ultraviolet light with the surface of the external surface of said camera on said hydrophilic filter from the edge portion of said hydrophilic filter. The hydrophilic filter 14 comprises a photocatalytic substance which decomposes organic substances adhered thereon depending on the ultraviolet light.

Abstract: In the camera 10 having an ultraviolet light generating portion 16, the influence of the ultraviolet light upon an image to be taken is suppressed. A camera 10 for taking an image possesses an image-pickup portion 24 which takes an image of a subject; a hydrophilic filter 14 formed so that a hydrophilic surface is exposed on an outer surface of the camera, and transmitting a light entering from the subject to said image-pickup portion; and an ultraviolet light generating portion 16, which irradiates an ultraviolet light with the surface of the external surface of said camera on said hydrophilic filter from the edge portion of said hydrophilic filter. The hydrophilic filter 14 comprises a photocatalytic substance which decomposes organic substances adhered thereon depending on the ultraviolet light.