SPOTLIGHT

摘要

PROBLEM TO BE SOLVED: To provide a spotlight capable of further enhancing light use efficiency and of restraining temperature rise of an appliance while having a light distribution characteristic similar to a conventional one.

SOLUTION: A lamp 4 disposed in a housing 1 is so disposed that the major axis passing the center of its light-emitting part 4a generally coincides with an optical axis Cx of a convergent lens 3 mounted at the front end of the housing 1. A direct light blocking plate 8 having an opening part 8a is installed on the front side of the lamp 4. An elliptic reflecting mirror 5 is installed by surrounding the light-emitting part 4a of the lamp 4. The reflecting mirror 5 is so disposed that its major axis generally coincides with the optical axis Cx. A first focus F1 on the lamp side within both focuses F1 and F2 is so set as to generally coincide with the position of the light-emitting part 4a of the lamp 4. The second focus F2 is so set as to generally coincide with the forming position of the opening part 8a of the blocking plate 8.

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