Light device having first and second optical systems arranged su

Details Light device having first and second optical systems arranged su Light device having first and second optical systems arranged su

1995-06-07

1996-12-17

Gromada, Denise

Illumination

Revolving

362 26, 362294, 362328, F21V 704

Patent

active

055845584

ABSTRACT:
A lighting device with two light pipes contains a light source with two optical systems arranged at right angles to each other and a common lamp. Behind the lamp, shifted by 9.degree., there are two reflector concave mirrors and, opposite each of them a condenser, which focuses the light arriving directly from the lamp and the light arriving from the reflector into one light pipe each. The full utilization of the light-pipe aperture requires a crowded construction, which is achieved by chamfered lateral edges of the condenser-lens mountings and the concave-mirror mountings, including cut-off lateral segments of the concave mirrors. Mirrors and lamp are contained in a replaceable module which module is inserted and fastened in the device housing, whereby the alignment of lamp and mirrors with the condensers (which are rigidly mounted in the housing) is automatically ensured. To both optical systems is assigned one light pipe each, which are operated simultaneously with a single lamp, whereby part of the irradiated energy of the lamp, which otherwise would have been uselessly radiated off is put to use, so that the output available through the light pipes is substantially doubled.

REFERENCES:
patent: 5099399 (1992-03-01), Miller et al.
patent: 5143435 (1992-09-01), Kikuchi
patent: 5207494 (1993-05-01), Jones
patent: 5436805 (1995-07-01), Hsu et al.
patent: 5452395 (1995-09-01), Schichman et al.

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