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| | Patent 5347435: Linear lamp holographic trapped beam center high mounted stoplight |
 | | The selection of such parameters is described more fully in the pending application entitled "Trapped Beam Holographic Center High Mounted Stoplight," by R. Smith, A. Daiber, M. McDonald, and A. Au, filed Apr. 16, 1990, as application serial number 07/519,319, the entire contents of which are incorporated herein by this reference. |
 | | Thus, in the case of the CHMSL, where the playback illumination is incident from the top of the hologram 62, the density or frequency of the dots in the mask is highest adjacent the top of the hologram, and decreases to the lowest density adjacent the lower part of the hologram. |
 | | However, to produce a high voltage from the vehicle battery supply would typically require converting the battery voltage to an AC signal, applying the AC voltage to a transformer to transform the signal into a high voltage, and then rectify the resulting voltage to obtain the signal to be applied to the bulb. |
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