Optical: systems and elements – Single channel simultaneously to or from plural channels – By surface composed of lenticular elements
Reexamination Certificate
2006-10-03
2006-10-03
Spector, David N. (Department: 2873)
Optical: systems and elements
Single channel simultaneously to or from plural channels
By surface composed of lenticular elements
C313S110000, C313S111000, C345S083000
Reexamination Certificate
active
07116485
ABSTRACT:
The present invention discloses an apparatus of LED flat light signal display, which comprises at least one light emitting diode, a plurality of flat microlens and at least one microlens set. The light emitting diode acts as a light source for discharging light. The flat microlens comprises a plurality of concentric serrated rings for collimating and converging convergence received from the light source. The microlens set comprises at least one microlens unit with a specific geometric shape for receiving light transmitted from the flat microlens to produce a light spot identical to the specific geometric shape, and the micro unit has a lateral side on its external edge to be disposed next to another lateral side of another micro unit to define a geometric plane. The present invention can provide a maximum viewing area with a minimum quantity of LEDs while being applied in dot matrix LED signals or imaging devices, and also make the images produced by the device smoother to enhance the comfort of viewing.
REFERENCES:
patent: 6196691 (2001-03-01), Ochiai
patent: 6608614 (2003-08-01), Johnson
patent: 6700502 (2004-03-01), Pederson
patent: 6756893 (2004-06-01), Fernandez
patent: 6809470 (2004-10-01), Morley et al.
patent: 290159 (1985-01-01), None
Ming-Fong Chen
Po-Hung Yao
Yi-Ting Sun
Yu-Nan Pao
Spector David N.
Troxell Law Office PLLC
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