Led variable light source
AssigneeThe Research Foundation of State University of New York
InventorsMohammad Haeri, Eduardo Solessio
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Abstract
An LED variable light source of this invention includes a super luminescent LED for generating a continuous light signal having a logarithmically controllable light intensity maintainable over a broad spectral range. The LED variable light source also includes a light lens for receiving and focusing the generated continuous light signal and a controller for controlling the light signal's intensity and frequency range via a driver interface, constructed and arranged to allow a user to input LED variable light source control inputs.
Claims23
A LED variable light source, comprising:
- a super luminescent LED for generating a light signal;
- a light lens for receiving and focusing the generated light signal;
- and a controller for controlling the light signal's intensity via a driver interface, constructed and arranged to allow a user to input LED variable light source control inputs;
- wherein the LED is driven by a pulsed signal, and the controller controls the intensity of the light signal generated by the LED by changing the duty cycle of the pulsed signal.
A visual stimulator for stimulating retinal responses, comprising:
- a LED variable light source for providing and moderating a continuous light signal to best suit an intended retinal examination;
- a controller for controlling the LED variable light source to moderate and direct the light signal into the retina;
- and a retinal response recorder for recording retinal responses to said moderated light signal;
- wherein the LED variable light source comprises:
- a light lens for focusing the generated light signal;
- a collimator for collimating the focused, attenuated light signal;
- a light guide for carrying the collimated, focused, attenuated light signal;
- and a diffuser for maintaining the coherence of the collimated, focused, attenuated light signal, wherein the controller controls the intensity of the light signal provided by the LED by changing the duty cycle of a pulsed signal driving the LED.
Dependencies are inferred from the claim text.