Curing light with ramped or pulsed leds
OwnerRobert Scottinventor
Life of this patent
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Abstract
An LED curing light having controlled spectral output. The LED curing light includes two or more LEDs that emit light at different wavelengths and means for selectively and independently controlling the output of each LED as a function of time so as to independently ramp and/or pulse one or more of the LEDs. The LED curing light can be programmed to mimic the light output of a conventional light source so as to, e.g., have a shifting Kelvin rating or warm the curable composition prior to curing it.
Claims26
An LED curing light having controlled spectral output, comprising:
- at least one LED light source configured to emit light having a first mean dominant wavelength;
- at least one other LED light source configured to emit light having a second mean dominant wavelength different from the first mean dominant wavelength;
- and
- selection means for selectively and independently controlling the output of each LED light source as a function of time so as to independently ramp and/or pulse the intensity of light emitted by the LED light sources as a function of time.
An LED curing light designed so as to at least partially mimic the behavior of a QTH curing light, comprising:
- at least one blue LED configured to emit blue light;
- at least one UV LED configured to emit UV light;
- and
- control circuitry configured so as to activate and fully illuminate the blue LED and so as to ramp the UV LED as a function of time so as to become fully illuminated after said blue LED is fully illuminated.
An LED curing light designed so as to at least partially mimic the behavior of a QTH curing light, comprising:
- at least one infrared LED configured to emit infrared light;
- at least one other LED light source configured to emit a different wavelength of light;
- and
- control circuitry configured so as to activate and illuminate said at least one infrared LED prior to illuminating at least one other of said LED light sources.
Dependencies are inferred from the claim text.