| 摘要 |
Provided is a lighting device capable of reducing the probability that the brightness is not even. The lighting device (10) is provided with a light source (21) and a condenser (23), wherein the light source (21) is provided with a face-shaped light-emitting face (28), the condenser (23) is cylindrical, an incidence opening (36) for incidence of light from the light-emitting face (28) is formed in one end of the condenser (23), an emergence opening (37) for emergence of the light is formed in the other end of the condenser (23), the condenser (23) has a gap (44) disposed between one end of the condenser (23) and the light-emitting face (28), and the outer diameter of the light-emitting face (28) is larger than that of the incidence opening (36) when the lighting device is observed from the side where the emergence opening (37) is located. |
