Direct heating cathode electron excitation fluorescent lamp working principle and its manufacture method
A technology of electronic excitation and manufacturing method, applied in the direction of lamp parts, etc., can solve the problems of high cost, poor spectral color rendering, low luminous efficiency, etc., and achieve the effect of high efficiency and high luminous flux
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[0048] The base metal direct-heating filament is made of nickel, which is covered with alkaline earth metals such as thorium, strontium, and calcium, or the direct-heating filament is made of tungsten, and its surface is coated with oxides of barium, strontium, and calcium as the main components.
[0049] The grid plate of the secondary electron emission material is made by using silver magnesium oxide or alkali halide layer such as potassium chloride.
[0050] Kovar metal material is used to make all the leads needed in the fluorescent lamp.
[0051] To use a getter, a small flake of getter is deposited in one corner of the lamp for all fluorescent lamps of manufacture and method as with electron tubes.
[0052] In Figure 3-1, the grid plate is die-cast into a long tubular shape, and in Figure 3-2, the grid plate is die-cast into a planar shape.
[0053] In Figure 4-1, soda glass is used to make the grid support, the front shape (1), the three-dimensional shape (2), the side...
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