Dual panel photodynamic therapy lamp

Abstract

A photodynamic therapy lamp includes two lamp modules comprising an array of LEDs. Each of the lamp modules is movable between a first position in which an angle between the lamp modules is from 157 degrees to 180 degrees, and a second position in which the angle between the lamp modules is from 50 degrees to 70 degrees.

1 - 30 . (canceled) 
     
     
         31 . A photodynamic therapy lamp comprising two lamp modules, each of the lamp modules comprising a two-dimensional array of LEDs and the lamp modules being configured to be movable only between a first position and a second position, wherein in the first position the two lamp modules are oriented such that there is an angle of 157 to 180 degrees between the lamp modules, and in the second position the angle between the lamp modules is from 55 to 65 degrees. 
     
     
         32 . The lamp according to  claim 31 , wherein the angle in the first position is from 163 to 172 degrees. 
     
     
         33 . The lamp according to  claim 31 , wherein the angle in the second position is 60 degrees. 
     
     
         34 . The lamp according to  claim 31 , wherein the lamp modules are identical. 
     
     
         35 . The lamp according to  claim 31 , further comprising a movable base and a support arm movably connecting the two lamp modules with the base. 
     
     
         36 . The lamp according to  claim 35 , wherein the base includes a power source, control electronics, and a patient cooling unit. 
     
     
         37 . The lamp according to  claim 31 , wherein each lamp module comprises a housing having an optical window, within the housing there is provided the two-dimensional array of LEDs, a substrate on which the array of LEDs is mounted, a heat sink, a cooling unit configured to cool the array of LEDs and at least one driver module. 
     
     
         38 . The lamp according to  claim 31 , wherein each lamp module contains 144 LEDs or more. 
     
     
         39 . The lamp according to  claim 31 , wherein the array of LEDs is formed of individual LED array elements that are arranged in a regular pattern. 
     
     
         40 . The lamp according to  claim 31 , wherein an irradiance of the array of LEDs is from 30 to 150 mW/cm 2  when the lamp modules are positioned at a distance from 5 cm to 8 cm to a treatment surface on a patient. 
     
     
         41 . The lamp according to  claim 31 , wherein an irradiance of the array of LEDs is 68 mW/cm 2  when the lamp modules are positioned at a distance from 5 cm to 8 cm to a treatment surface on a patient. 
     
     
         42 . The lamp according to  claim 31 , wherein a light dose of the array of LEDs is from 1 to 99 J/cm 2  during a treatment time. 
     
     
         43 . The lamp according to  claim 31 , wherein, when in operation, each LED of the array of LEDs emits light at a nominal wavelength of 632 nm±5 nm. 
     
     
         44 . The lamp according to  claim 31 , wherein the LEDs include collimating lenses configured to collimate light. 
     
     
         45 . The lamp according to  claim 31 , wherein, when in operation, a luminous output of the LEDs is kept constant by controlling their temperature by a cooling unit. 
     
     
         46 . The lamp according to  claim 37 , wherein a current from the at least one driver module is variable and adapted in operation to meet delivery of a set light dose within a fixed illumination time. 
     
     
         47 . The lamp according to  claim 37 , further comprising a user interface having at least one input device and at least one output device. 
     
     
         48 . The lamp according to  claim 31 , wherein the lamp modules include locking elements configured to selectively lock the lamp modules in either the first position or the second position;
 further comprising a movable base and a support arm movably connecting the two lamp modules with the base, the base including a power source, control electronics, and a patient cooling unit;   wherein each lamp module comprises a housing having an optical window, within the housing there is provided the two-dimensional array of LEDs, a substrate on which the array of LEDs is mounted, a heat sink, a cooling unit configured to cool the array of LEDs and at least one driver module;   wherein the array of LEDs is formed of individual LED array elements that are arranged in a regular pattern;   wherein, when in operation, each LED of the array of LEDs emits light at a nominal wavelength of 632 nm±5 nm;   wherein the LEDs are collimated LEDs including lenses configured to collimate light;   wherein the lenses are arranged in an array of lenses that matches the array of LEDs;   wherein the number of LEDs in the array of LEDs and the number of lenses in the array of lenses is identical;   wherein a current from the at least one driver module is variable and adapted in operation to meet delivery of a set light dose within a fixed illumination time; and   further comprising a user interface having at least one input device and at least one output device.   
     
     
         49 . The lamp according to  claim 48 , wherein the angle in the second position is 60 degrees.