Центральный научно-исследовательский институт "Комета"
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FIELD: optical devices. SUBSTANCE: device has incandescent lamp proper with elliptical reflector whose light aperture of which is closed by concave glass-sphere segment with, center located in external focus of reflector. EFFECT: enlarged operating capabilities. 2 cl, 2 dwg
SU4900429/07A1991-01-081991-01-08Incandescent lamp for local illumination and heating
SU1774787A1
(en)
DEVICE FOR ADJUSTING THE POSITION OF THE FILAMENT OF A LAMP AND OPTICAL INSTRUMENT TO ADJUST THE POSITION OF THE FILAMENT OF A LAMP IN THE FOCUS OF A CONCAVE REFLECTOR, IN A LIGHT SIGNALING INSTALLATION