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 . A photodynamic therapy lamp, comprising two lamp modules each lamp module comprising a two-dimensional array of LEDs and each of the lamp modules being configured to be movable only within a range defined between a first position and a second position, the first position defining an angle between the lamp modules from 157 degrees to 180 degrees, and the second position defining the angle between the lamp modules from 50 degrees to 70 degrees. 
     
     
         2 . The lamp according to  claim 1 , wherein the angle in the first position is from 163 to 172 degrees. 
     
     
         3 . The lamp according to  claim 1 , wherein the angle in the first position is from 166.5 to 170.5 degrees. 
     
     
         4 . The lamp according to  claim 1 , wherein the angle in the first position is 168.5 degrees. 
     
     
         5 . The lamp according to  claim 1 , wherein the angle in the second position is from 55 to 65 degrees. 
     
     
         6 . The lamp according to  claim 1 , wherein the angle in the second position is from 58 to 62 degrees. 
     
     
         7 . The lamp according to  claim 1 , wherein the angle in the second position is 60 degrees. 
     
     
         8 . (canceled) 
     
     
         9 . The lamp according to  claim 1 , wherein the lamp modules are identical. 
     
     
         10 . (canceled) 
     
     
         11 . The lamp according to  claim 1 , further comprising a movable base and a support arm movably connecting the two lamp modules with the base. 
     
     
         12 . The lamp according to  claim 11 , wherein the base includes a power source, control electronics, and a patient cooling unit. 
     
     
         13 . The lamp according to  claim 1 , 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. 
     
     
         14 . The lamp according to  claim 1 , wherein each lamp module contains 144 LEDs or more. 
     
     
         15 . The lamp according to  claim 1 , wherein each lamp module contains from 240 to 320 LEDs. 
     
     
         16 . The lamp according to  claim 1 , wherein each lamp module contains 256 LEDs. 
     
     
         17 . The lamp according to  claim 1 , wherein the array of LEDs is formed of individual LED array elements that are arranged in a regular pattern. 
     
     
         18 . The lamp according to  claim 1 , 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 about 5 cm to about 8 cm to a treatment surface on a patient. 
     
     
         19 . The lamp according to  claim 1 , wherein an irradiance of the array of LEDs is 46 mW/cm 2  and 68 mW/cm 2  when the lamp modules are positioned at a distance from about 5 cm to about 8 cm to a treatment surface on a patient. 
     
     
         20 . The lamp according to  claim 1 , wherein a light dose of the array of LEDs is from about 1 to 99 J/cm 2  during a treatment time. 
     
     
         21 . The lamp according to  claim 1 , wherein a light dose of the array of LEDs is about 37 J/cm 2  during a treatment time. 
     
     
         22 . The lamp according to  claim 1 , wherein, when in operation, each LED of the array of LEDs emits light at a nominal wavelength of approximately 632 nm±5 nm. 
     
     
         23 . The lamp according to  claim 1 , wherein, when in operation, each LED of the array of LEDs emits light at a nominal wavelength of approximately 417 nm±5 nm. 
     
     
         24 . (canceled) 
     
     
         25 . The lamp according to  claim 1 , wherein the LEDs include collimating lenses configured to collimate light. 
     
     
         26 . The lamp according to  claim 25 , wherein the lenses are arranged in an array of lenses that matches the array of LEDs. 
     
     
         27 . The lamp according to  claim 26 , wherein the number of LEDs in the array of LEDs and the number of lenses in the array of lenses is identical. 
     
     
         28 . The lamp according to  claim 1 , wherein, when in operation, a luminous output of the LEDs is kept constant by controlling their temperature by a cooling unit. 
     
     
         29 . The lamp according to  claim 13 , 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. 
     
     
         30 . The lamp according to  claim 13 , further comprising a user interface having at least one input device and at least one output device. 
     
     
         31 . A photodynamic therapy lamp, comprising two lamp modules each lamp module comprising a two-dimensional array of LEDs and each of the lamp modules being configured to be movable only within a range defined between a first position and a second position, the first position defining an angle between the lamp modules from 157 degrees to 180 degrees, and the second position defining the angle between the lamp modules from 50 degrees to 70 degrees;
 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 approximately 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.   
     
     
         32 . A photodynamic therapy lamp, comprising two lamp modules supported on a common support arm, each lamp module comprising a two-dimensional array of LEDs, each of the lamp modules being configured to be movable only within a range defined between a first position and a second position, the first position defining an angle between the lamp modules from 157 degrees to 180 degrees, and the second position defining the angle between the lamp modules from 50 degrees to 70 degrees, and each of the lamp modules including locking elements configured to selectively lock the lamp modules in either the first position or the second position.