Light source device and video image displaying apparatus using the same
A light source device and optical axis technology, which is applied in the cooling/heating device of the lighting device, the parts of the lighting device, the electric light source, etc., and can solve the problem of reduced light collection efficiency, failure to reach the focus point, area, and reduction of collection efficiency, etc. problem, to achieve the effect of small imaging magnification, good small light spot, and improved light-gathering efficiency
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[0078] Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 16 . First, a light source device according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2 . FIG. 1 is a horizontal sectional view showing the basic structure of a light source device according to a first embodiment of the present invention, and FIG. 2 is a side sectional view of the light source device.
[0079] As shown in FIG. 1 , the light source device B according to the first embodiment of the present invention includes: an arc tube 20 as a light source; a reflector 30 for reflecting light emitted from the arc tube 20 ; and a condenser 40 .
[0080] The arc tube 20 forms the same structure as the aforementioned arc tube 1, which will be described in more detail below.
[0081] The arc tube 20 is a direct current lighting high-pressure mercury lamp with a diameter of about 10 (mm), and an anode electrode 21 and a cathode ele...
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