Phototherapy device thermal control apparatus and method
First Claim
1. A dermatologic hair-regrowth-inhibiting apparatus, comprising:
- a housing;
one or more diode laser bars;
an electrical circuit disposed within the housing, the electrical circuit comprising;
one or more batteries that energize the one or more diode laser bars to produce a light pulse;
a direct drive circuit such that during the light pulse the current flow through the one or more batteries is substantially equal to the sum of the current flow through the one or more diode laser bars; and
a closed-loop current control system comprising;
one or more control field effect transistors (FET'"'"'s) electrically coupled to the one or more batteries and the one or more diode laser bars, each FET having a gate;
a voltage supply coupled to the gate of each control FET'"'"'s; and
a controller configured to control the voltage supply to control a voltage applied at the gate of each control FET to thereby control a current flowing through the one or more diode laser bars.
3 Assignments
0 Petitions
Accused Products
Abstract
A cordless, hand-held dermatologic hair-regrowth-inhibiting apparatus may include: a self-contained housing configured for gripping by a person'"'"'s hand for cordless manipulation in a hair-regrowth-inhibiting procedure; a light source comprising one or more diode laser bars within the housing; a direct drive electrical circuit within the housing comprising one or more batteries for energizing the light source to produce output light pulses, wherein the electrical circuit does not include any storage capacitors that energize the light source by capacitor discharge; and a light path within the housing including an aperture through which the output light pulses are propagated out of the housing having properties sufficient for at least temporary hair-regrowth inhibition.
287 Citations
4 Claims
-
1. A dermatologic hair-regrowth-inhibiting apparatus, comprising:
-
a housing; one or more diode laser bars; an electrical circuit disposed within the housing, the electrical circuit comprising; one or more batteries that energize the one or more diode laser bars to produce a light pulse; a direct drive circuit such that during the light pulse the current flow through the one or more batteries is substantially equal to the sum of the current flow through the one or more diode laser bars; and a closed-loop current control system comprising; one or more control field effect transistors (FET'"'"'s) electrically coupled to the one or more batteries and the one or more diode laser bars, each FET having a gate; a voltage supply coupled to the gate of each control FET'"'"'s; and a controller configured to control the voltage supply to control a voltage applied at the gate of each control FET to thereby control a current flowing through the one or more diode laser bars. - View Dependent Claims (2, 3, 4)
-
Specification