| 摘要 |
PURPOSE:To prevent a part other than a display part from being undesirably observed by constituting plural display parts of a photoluminescence element which projects visible light when infrared or ultraviolet light is emitted and providing a means for selectively projecting the infrared or ultraviolet light to the plural display parts. CONSTITUTION:The plural display parts 5a-5e are constituted of the photoluminescence element which projects the visible light when they are irradiated with the infrared or ultraviolet light, and the irradiation means (light emitter) 10 for selectively irradiating the plural display parts 5a-5e with the infrared or ultraviolet light is provided. When the plural display parts 5a-5e constituted of the photoluminescence element are selectively irradiated with the infrared or ultraviolet light by the means 10, they project the visible light, which is observed with an object image through finder optical systems 6 and 7. However, even when the irradiating light is conducted to an eyepiece 7 after the spot other than the display parts 5a-5e of a focusing plate 5 is irradiated with the light, the spot other than the display part is not undesirably observed because the irradiating light of the means 10 is not the visible light but the infrared or ultraviolet light. |
