| 摘要 |
PROBLEM TO BE SOLVED: To reduce the service life of a light source lamp from being deteriorated due to infrared rays. SOLUTION: In this display device, a lens array 200 is arranged on the optical path of light emitted from a light source part 100 so that the curved lens surface thereof becomes the incident surface of the light. Then, at least a filter FIR cutting off the infrared rays is formed at the curved lens surface of the array 200. Since the infrared rays IR emitted from the light source part 100 are radially reflected by the filter FIR, the certain amount of infrared rays made incident on the light source lamp 101 again is reduced. Thus, the damage, the deformation, the white misted state and the like of the lamp 101 caused by the temperature rise thereof can be reduced. |
