| 摘要 |
The frame (10) supports the lamp glass (14), with an optical field (16) and has a spherical rear wall (12), and the reflector (18) has three runners (27), which are displaceable on the rear wall in the manner of a ball journal bearing (27, 28). The passage point (29) of the reflector axis (22) through the optical field (16) and the spherical centre point of the ball journal bearing are identical. The spherical pivotability of the reflector (18) with respect to the optical field (16) makes it possible to set the reflective surface (21) of the reflector (18) in relation to the optical field (16) in a predetermined way, the identity of the passage point (29) impairing the specified optical effect only insignificantly even with maximum pivoting of the reflector (28). <IMAGE>
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