JP6543618B2 - LED-based solar simulator system and method of using the same - Google Patents

Description

  This application claims the benefit of US Provisional Application No. 61 / 884,043, entitled "LED Based Sunlight Simulator and Method of Use", filed Sep. 28, 2014. The content of the provisional application is incorporated by reference in its entirety.

  Solar light simulators are used in a wide variety of applications. For example, light sources capable of reproducing the spectral properties of the sun have been used in testing the weathering properties of various protective coatings, including tests of paints, dyes, wall coverings, waxes and the like. Furthermore, solar light simulators can be used for various medical research applications. For example, sunlight simulators are frequently used in skin cancer research, light biochemistry applications, phototoxicity, light allergy tests, and various other medical applications. Also, sunlight simulators are commonly used to determine various sun protection elements (hereinafter referred to as SPF) such as cosmetics, sunscreens, lotions, clothes and the like. Typically, the SPF test examines the erythematous reaction for when the sun protection material is applied to the skin of a mammal and when it is not applied.

  Currently, sunlight simulators generally include high intensity lamps that provide a light output that reproduces the spectral characteristics of the sun. While lamp-based solar simulator systems have been found to be somewhat useful in the past, a number of drawbacks have also been identified. For example, these systems often require the use of optical filter systems to selectively adjust the spectral output of the solar simulator to the desired wavelength range. These optical filter systems add to the cost and complexity of the solar simulator system. Furthermore, multiple light filter systems may be required to enable the solar simulator to output light radiation of various desired wavelength ranges. Recent environmental regulations also strictly limit or prohibit the use of certain materials used in the manufacture of colored glass filters. Therefore, it is difficult, if not impossible, to reproduce parts of the solar spectrum.

  From the above point of view, there is a need for a solar simulator system that can efficiently reproduce the solar spectrum. Furthermore, ideally, it is desirable that the sunlight simulator be able to selectively reproduce parts of the sunlight spectrum.

  The present application is directed to a novel LED-based solar light simulator system and its method of manufacture. In one embodiment, the present application discloses an LED-based solar simulator light source, wherein the LED-based solar simulator light source comprises at least one LED array formed by a group of LEDs of a plurality of LED assemblies; One field smoothing device, at least one diffractive element, and at least one optical element configured to adjust the broad spectrum light source output signal to direct the light source output signal to the work surface. Each LED group may be configured to output at least one light signal within an individual spectral range. Furthermore, the field smoothing device may be configured to attenuate or smooth at least one light characteristic of the plurality of outputs from the plurality of LED groups forming the LED array. Also, the diffractive element may be configured to receive and combine the light signals from the plurality of LED groups to produce a broad spectrum light source output signal. This allows multiple point light sources (i.e., individual LED light sources in each wavelength range) to be converted to a single, broad spectrum single light source.

  In another embodiment, the present application discloses an LED-based solar simulator system, wherein the LED-based solar simulator system comprises at least one LED-based light source having at least one LED array positioned therein Wherein the LED array is formed by LEDs of a plurality of LED assemblies, each LED group being configured to output at least one light signal within an individual spectral range, the plurality of LEDs being at a wavelength An LED-based light source for cooperatively outputting at least one light source output signal having a spectrum, and the light source output signal capable of communicating with the LED-based light source and selectively controlling an output of at least one LED group At least one configured to allow selective change of the wavelength spectrum of Including control device and, the.

  Other features and advantages of such novel LED-based solar simulator system embodiments as disclosed herein will be apparent in view of the following detailed description.

  Several embodiments of the novel LED-based solar simulator system are described in more detail using the attached drawings.

FIG. 1 shows a front perspective view of an embodiment of an LED-based solar simulator system comprising an LED light source and a controller.

FIG. 2 shows a rear perspective view of an embodiment of an LED light source for use in an LED-based solar simulator system.

FIG. 3 shows a rear elevation view of an embodiment of an LED light source for use in an LED based solar simulator system.

FIG. 4 shows a side view of one embodiment of an LED light source for use in a LED based solar light simulator system.

FIG. 5 shows a bottom view of an embodiment of an LED light source for use in an LED-based solar simulator system.

FIG. 6 shows a perspective view of the internal components of an embodiment of an LED light source for use in an LED-based solar simulator system.

FIG. 7 shows another perspective view of the internal components of one embodiment of an LED light source for use in an LED-based solar simulator system.

FIG. 8 shows a side perspective view of an LED array for use in one embodiment of an LED light source for use in an LED based solar light simulator system.

FIG. 9 shows a side perspective view of an LED assembly used to form an LED array for use in one embodiment of an LED light source for use in an LED based solar light simulator system.

FIG. 10 shows a side view of an LED array for use in one embodiment of an LED light source for use in an LED-based solar simulator system.

FIG. 11 shows another perspective view of the internal components of one embodiment of an LED light source for use in an LED-based solar simulator system.

FIG. 12 illustrates ray trajectories of light signals emitted by the LED array passing through one embodiment of the LED light source used in the LED based solar light simulator system.

FIG. 13 shows a perspective view of the internal components of the controller used in the LED based solar simulator system.

  The present application is directed to various embodiments of LED based solar light simulators. Unlike conventional lamp-based solar light simulators, the LED-based solar light simulator described herein provides a low power LED light source that is capable of reproducing the solar spectral output. Also, the LED-based solar simulator apparatus described herein allows the user to easily alter the spectral characteristics of the output signal as desired.

  FIG. 1 shows a perspective view of one embodiment of a LED based solar light simulator system. As shown, the LED-based solar simulator system 10 comprises at least one LED light source 12 and at least one control system or controller 14. In one embodiment, the LED light source 12 is connected to the controller 14 via at least one conduit (not shown). In another embodiment, the LED light source 12 may be connected to the controller 14 wirelessly. In another embodiment, the LED light source 12 may be connected to the controller 14 via a computer network. In one embodiment, at least one of the LED light source 12 and the controller 14 includes at least one processor or similar controller. Optionally, at least one of the LED light source 12 and the controller 14 may be capable of communicating with at least one external processor or computer (not shown). For example, the LED light source 12 and the controller 14 may be configured to be able to communicate with an external processor or computer (not shown) via at least one conduit and / or wirelessly. Furthermore, the controller 14 may be included inside the LED light source 12 or may be incorporated inside the LED light source 12.

  Referring again to FIG. 1, in the illustrated embodiment, a single LED light source 12 is illustrated with a corresponding single controller 14. Optionally, multiple LED light sources 12 may be configured to connect with a single controller 14. For example, the system may be configured to have any number of LED light sources 12 connected to any number of controllers 14.

  1-5 show various views of one embodiment of the LED light source 12 shown in FIG. As shown, the LED light source 12 includes at least one light source head housing 20 surrounding at least one light source head 50 (see FIG. 6). In one embodiment, light source head housing 20 is manufactured from at least one thermoplastic material. In another embodiment, the light source head housing 20 is made of at least one polymer material. In another embodiment, the light source head housing 20 is made of aluminum. Alternatively, the light source head housing 20 can be made of various materials including, but not limited to, polymers, metals, alloys, composites, and the like.

  Referring back to FIGS. 1 to 5, the light source head housing 20 is connected to at least one head support 22. In the illustrated embodiment, the head support 22 is coupled to at least one work surface 24 using at least one coupling bracket 28. Alternatively, the head support 22 and the work surface 24 may be integral. In another embodiment, the light source head housing 20 and / or the light source head 50 may be a standard light mount that couples at least one of the light source head housing 20 and the light source head 50 to the head support 22, the work surface 24, or both. It is configured to couple using hardware.

  In the illustrated embodiment, at least one coupling device 26 is used to couple the light source head 50 and / or the light source head housing 20 to the head support 22. In one embodiment, the head support 22 and the coupling device 26 are configured to allow the light source head housing 20 surrounding the light source head 50 to be movable on at least one side. For example, as shown in FIG. 4, the light source head housing 20 housing the light source head 50 may be configured to be adjustably positioned along at least one of the x and y axes. Furthermore, at least one of the head support 22 and the coupling device 26 may include any number of degrees of freedom along any number of planes and / or orientations of the light source head housing 20 that accommodates the light source head 50. Allow movement. In one embodiment, the head support 22 comprises a light support rod and the coupling device comprises a light rod clamp. Both are manufactured by Newport Corporation. Optionally, the head support 22 and the coupling device 26 can be fixed.

  As shown in FIG. 3, in one embodiment, one or more passageways 30 configured to receive one or more coupling elements or electrical connectors may be formed in the light source head housing 20. For example, at least one passage 30 configured to receive at least one conduit or cable may be formed on the light source head housing 20 so that the LED light source 12 controls the controller 14 and / or one or more external computers or processors. It can be connected to (not shown). Optionally, the light source head housing 20 can include a plurality of passages formed therein to allow the light source head 50 (see FIG. 6) to be coupled to a plurality of devices and / or controllers.

  With reference to FIGS. 2 and 4, light source head housing 20 may include any number of vents and / or fluid passages 32. In the illustrated embodiment, fluid passages 32 are formed on opposite sides of light source head housing 20 to allow for cooling of the components forming light source head 50. Optionally, any number, size and shape of fluid passages 32 can be formed anywhere on the light source head housing 20. In the illustrated embodiment, the fluid passage 32 is configured to allow the flow of air within the light source head housing 20. Optionally, the fluid passage 32 may be configured to allow various fluid flows within the light source head housing 20, including liquid cooling configurations. In another embodiment, light source head housing 20 is configured to include at least one cryogenic cooler for thermal conditioning of the components forming light source head 50.

  Figures 1, 5 and 6 show various views of the LED light source 12. As shown, the light source head 50 includes at least one head base plate 42 having any number of openings and / or orifices. In the illustrated embodiment, the head base plate 42 is configured to be removably coupled to the light source head housing 20. In another embodiment, head base plate 42 is configured to non-detachably couple to light source head housing 20. Referring again to FIGS. 5 and 6, the head base plate 42 can include at least one alignment or positioning aperture 36. In the illustrated embodiment, two alignment openings 36 are formed on the head base plate 42.

  As shown in FIGS. 1, 5 and 6, one or more alignment beams or signals 34 may be configured to be projected from the alignment aperture 36 onto the work surface 24. For example, one or more alignment devices 64 may be configured to project at least one alignment signal 34 from the alignment aperture 36 to the work surface 24. In the embodiment shown in FIG. 1, two intersecting alignment signals 34 are projected from the light source head 50 onto the work surface 24. Optionally, alignment signal 34 may project any number, shape, and / or size of alignment references onto the specimen, work surface 24 and / or both. Optionally, alignment aperture 36 may be used with one or more cameras, machine vision systems, etc.

  Referring again to FIGS. 1, 5 and 6, at least one projection aperture 38 is formed in the head base plate 42. In the illustrated embodiment, the projection aperture 38 may be sized to receive one or more lenses. Furthermore, the head base plate 42 may include fastening recesses 40 of any number and size. In one embodiment, the fastening recess 40 is configured to allow the components forming the light source head 50 to be rigidly coupled to the head base plate 42. In another embodiment, the fastening recess 40 is configured to allow one or more elements or devices to be coupled to the head base plate 42 near the work surface 24. Exemplary devices include, but are not limited to, cameras, detectors, filters, shutters, choppers, splitters, prisms, light sources, and the like.

  6-11 show various views of the internal components that form the light source head 50 described above. As shown in FIGS. 6, 7 and 11, the light source head 50 includes a head frame or frame 52 configured to support various components of the light source head 50. For example, head frame 52 may be coupled to head plate 42. Optionally, head frame 52 may be integral with head plate 42. In one embodiment, the head frame 52 is made of aluminum. In another embodiment, head frame 52 is manufactured from one or more alloys. Optionally, the head frame 52 and various partial systems forming the head frame 52 include, but are not limited to, steel, aluminum, titanium, alloys, composites, thermoplastics, polymers, elastomers, ceramic materials, etc. It can be manufactured from any of a variety of materials.

  Referring again to FIGS. 6-11, head frame 52 may include various frame support systems configured to support various sub-systems forming light source head 50. For example, head frame 52 includes at least one LED array support 54 configured to support one or more LED arrays 94, 96 at a desired location. FIG. 8 shows the first LED array 94 and at least one second LED array 96 coupled or supported to the LED array support 54 of the head frame 52. In another embodiment, the LED array support 54 is configured to support three or more LED arrays. In another embodiment, the LED array support 54 is configured to support four or more LED arrays. Optionally, the LED array support 54 may be configured to support a single LED array. One skilled in the art will recognize that the LED array support 54 can be configured to support any number and size of LED arrays. In the illustrated embodiment, the LED array support 54 is configured to support the LED arrays 94, 96 at a fixed location. Optionally, the LED array support 54 may be configured to movably support the LED arrays 94, 96. For example, the LED array support 54 may include one or more movable stages, gimbals, kinematics, etc., to allow the user to move the LED arrays 94, 96 along any number of planes relative to the head frame 52. It is acceptable to adjust the position.

  Referring again to FIGS. 6-11, head frame 52 may include one or more mirror or reflector supports 56. The mirror support 56 may be configured to support one or more mirrors at any position relative to the LED arrays 94, 96. FIG. 6 illustrates one embodiment of a mirror support 56 in which the first mirror 130 and the second mirror 132 are supported by one or more mirror supports 56. One skilled in the art will recognize that any number of mirrors may be supported by any number of mirror supports 56. In the illustrated embodiment of FIG. 6, at least one mirror mount 62 may be used to couple the mirrors 130, 132 to the mirror support 56. In one embodiment, the mirror mount 62 includes an adjustable mirror mount 62 configured to allow adjustment of multiple faces of at least one mirror coupled to the mirror mount 62. For example, in one embodiment, the mirror mount 62 includes a kinematic mirror mount to allow the user to accurately adjust the position and orientation of the mirror supported by the mirror mount 62. There is. Optionally, the mirror attachment 62 may be configured to position the mirrors 130, 132 in a fixed position. In the illustrated embodiment, the mirror support 56 is positioned proximate to the LED array support 54. One skilled in the art will recognize that the mirror support may be positioned distally away from the LED array support 54.

  As shown in FIGS. 6, 7 and 11, the head frame 52 may include one or more diffractive element supports 58. In the embodiments shown in FIGS. 6, 7 and 11, the diffractive element support 58 is configured to support at least one diffractive optical element at a desired location. In the illustrated embodiment, the diffractive optical element support 58 supports the first diffractive optical element 160 and the second diffractive optical element 164. In one embodiment, the diffractive optical elements 160, 164 comprise regular Echel grids. Optionally, any of a wide variety of reflective and / or transmissive diffractive optical elements can be utilized in the present system. Other exemplary diffractive optical elements include, but are not limited to, diffraction gratings, prisms, and the like. As shown, the diffractive optical element may be coupled to the diffractive element support 58 via one or more diffractive element mounts. In the illustrated embodiment, the first diffractive optical element 160 is coupled to the diffractive element support 58 via a first diffractive element mount 162. Similarly, the second diffractive optical element 164 is coupled to the diffractive element support 58 via a second diffractive element mount 166. In one embodiment, the diffractive element mounts 162, 166 are adjustable mounts configured to allow adjustment of multiple faces of at least one diffractive optical element coupled to the diffractive element mounts 162, 166. Have. For example, in one embodiment, the diffractive element mounts 162, 166 are kinematics that allow the user to accurately adjust the position and orientation of the diffractive optical elements 160, 164 supported by the diffractive element mounts 162, 166. Mounting portion. In the illustrated embodiment, the diffractive element support 58 is positioned distal to the LED array support 54 and the mirror support 56. One skilled in the art will recognize that the diffractive element support 58 may be positioned proximate to at least one of the LED array support 54 and the mirror support 56.

  As shown in FIGS. 6, 7 and 11, the head frame 52 further includes at least one optical set support 60. As shown, optical set support 60 is configured to support one or more optical elements in a desired position. In the illustrated embodiment, the optical set coupled to the optical set support 60 includes a number of optical elements configured to condition the optical signal prior to outputting the optical signal to the work surface 24 (FIG. 1). Through 4). For example, in the illustrated embodiment, the optical set includes a first lens 144 and a second lens 146. However, one skilled in the art will recognize that any number of lenses may be used in the present system.

  Referring again to FIGS. 6, 7 and 11, the first output mirror 140 and the second output mirror 142 may be included in the optical set. In one embodiment, the first and second mirrors 140, 142 comprise dichroic mirrors, and the first output mirror 140 is configured to reflect at least one light signal in a first wavelength range The second output mirror 142 is configured to reflect at least one light signal within the second wavelength range. Optionally, the first and second wavelength ranges may or may not be overlapping ranges. Also, one or more additional optical elements 148 may be included in the optical set (see FIG. 11). Exemplary additional optical elements include, but are not limited to, beam homogenizers, lenses, field smoothers, sensors, filters, wave plates, patterns, masks, templates, mirrors, and the like. Optionally, the additional optical element 148 can be positioned close to the projection aperture 38 formed in the head plate 42 of the light source head 50. In one embodiment, at least one adjustable optical mount may be utilized to couple at least one element of the optical set to the optical set support 60. Optionally, the optical elements forming the optical set may be coupled to the optical set support 60 at a fixed position.

  As shown in FIGS. 6, 7 and 11, at least one thermal control system 70 may be included in the light source head 50. As shown, in one embodiment, the thermal control system 70 may include at least one shroud 72 having one or more fans 74. In the illustrated embodiment, three fans 74 are included in the thermal control system 70. However, one skilled in the art will recognize that any number of fans may be used. Further, fan 74 and shroud 72 are configured to direct air across at least a portion of the at least one LED array supported by LED array support 52. This provides convective cooling to the LED arrays 94, 96 (see FIG. 8). At least one cooling passage 76 may be formed in the light source head 50. 6, 7 and 11 show various views of the light source head 50 in which at least one cooling passage is formed. Further, the cooling passage 76 may be in fluid communication with at least one vent 32 formed in the light source head housing 20 (see FIGS. 2 and 4). Also, the light source head 50 may include any of a variety of other thermal control devices. It includes, but is not limited to, chillers, piezo coolers, water cooling systems, etc. Optionally, the light source head 50 can be manufactured without the thermal control system 70. In other embodiments, thermal control system 70 may include at least one heating device. The heating device is configured to preheat or heat the LED array 94, 96 and / or the LED assembly 102 to a desired temperature. This reduces or eliminates the warm-up time of the device or wavelength drift associated with the thermal cycling of the LED array 94, 96 and / or the LED assembly 102 (see FIGS. 8-10).

  7 and 11 illustrate an embodiment of a light source head 50 having at least one mounting support bracket 80 coupled or communicable with the head frame 52, the head plate 42, or both. The mounting bracket 80 is configured to allow the light source head 50 to be rigidly coupled to the coupling device 26. Thus, the light source head 50 is allowed to be fixed to the head support 22 (see FIGS. 1 to 5). The mounting bracket 80 may include various mounting openings configured to receive one or more fasteners.

  FIGS. 8-10 illustrate various details of the LED array of the light source head 50. FIG. As shown, at least one LED array support body 90 supports a first LED array 94 and a second LED array 96. As mentioned above, any number of LED arrays may be utilized in the present system. Optionally, at least one cooling passage 76 may be formed in the LED array support body 90. The cooling passage 76 may be in fluid communication with the thermal control system 70 described above.

  Referring to FIGS. 8-10, at least one field smoothing device may be positioned proximate to at least one LED array. In the illustrated embodiment, a first field smoother 98 is positioned proximate to the first LED array 94. Similarly, a second field smoothing device 100 is positioned proximate to the second LED array 96. In one embodiment, the field smoothing device 98, 100 comprises a Fresnel lens or Fresnel body. However, one skilled in the art will recognize that any of a variety of field smoothing devices may be utilized. In one embodiment, the at least one field smoothing device 98, 100 comprises a Fresnel lens having a flat body. In another embodiment, the at least one field smoothing device 98, 100 comprises a Fresnel lens having an arcuate body. In another embodiment, the at least one field smoothing device 98, 100 comprises a holographic Fresnel lens. In another embodiment, the at least one field smoothing device 98, 100 comprises at least one fiber optic based Fresnel lens.

  As shown in FIGS. 8-10, the LED arrays 94, 96 may comprise one or more LED devices configured to output light signals having a wavelength of about 200 nm to about 2000 nm. In one embodiment, the LED array comprises a mixture of light emitting diode groups (hereinafter LED groups). Each LED group is configured to output a distinguishable wavelength range. For example, the first set of LEDs can be configured to output an optical signal having a wavelength of about 350 nm to about 400 nm. Meanwhile, the second LED group may be configured to output an optical signal having a wavelength of about 400 nm to about 450 nm. A group of n LEDs, each configured to output an optical signal within a distinguishable spectral range, may be configured to cooperatively output an optical signal having a spectral range of about 200 nm to about 2000 nm. As shown, each LED group comprises one or more LED assemblies 102 positioned on at least one printed circuit board or substrate 110. In one embodiment, each LED assembly 102 includes at least one LED device or LED die 112 having at least one total internal reflection lens 114 (hereinafter TIR lens) coupled thereto or positioned proximate thereto. Have. In the illustrated embodiment, the TIR lens 114 may include at least one TIR lens support 116 coupled to the circuit board 110. In the illustrated embodiment, the LED array uses LEDs, which are individual light sources. Optionally, laser light emitting diodes can be used in addition to or instead of LEDs.

  FIG. 10 shows a side perspective view of the first and second LED arrays 94, 96. As shown, at least one circuit board 110 of the LED array 94, 96 may be in communication with at least one PCB support 120. In one embodiment, the PCB support 120 is configured to support the circuit board 110 to enhance convective cooling of the LED array. The PCB support 120 may include one or more extensions configured to increase the surface area of the support 120 to improve heat exchange performance. The support 120 can be made of any of a variety of materials. Such materials include, but are not limited to, aluminum, copper, tungsten, metal alloys and the like.

  Referring again to FIGS. 1, 6, 7 and 11, at least one alignment device 64 may be positioned on the head plate 42 proximate to the at least one alignment opening 36 formed therein ( See Figure 5). In use, the alignment device 64 emits at least one alignment signal 34. The alignment signal 34 is emitted to the work surface 24 through the alignment aperture 36. In one embodiment, as shown in FIG. 1, two alignment devices 64 are each utilized to project the alignment signal 34 at an angle to the work surface 24. The angles of the two alignment signals 34 may be configured to allow repeatable positioning of the light source 12 at a desired height from the work surface 24. For example, the user may set the angle of alignment device 64 for the desired height (e.g., 12 inches). The alignment device 64 is then activated to provide two separate signals 34 to the work surface 24. Thereafter, the user repositions (i.e. raises and lowers) the light source 12 on the head support 22. This ensures that a single alignment signal 34 appears on the work surface 24 to ensure that the light source 12 is at the desired height from the work surface 24.

  FIG. 12 shows an optical signal traversing at least a portion of the light source head 50 (see FIG. 6). For example, as shown, the first LED array 94 emits at least one light signal 180 consisting of the outputs of the individual LED groups to the first mirror 130. Each of the LED groups has a distinguishable wavelength range. The first mirror 130 directs the light signal 180 to the first diffractive optical element 160. The diffractive element 160 is used to combine the distinguishable light signals from the individual LED groups formed on the first LED array 94 to produce a broad spectrum output signal. The output signal is directed through a lens 144 to a mirror 140 (eg, a dichroic mirror), which reflects the signal 180 through the optical element 148 (eg, a beam homogenizer and / or a lens) to the work surface 24. Do. Unlike conventional LED-based solar light simulators, the present system uses at least one diffractive element 160 to spectrally combine the distinguishable spectral outputs of individual LED groups to provide a broad spectral output to the work surface 24. Form.

FIG. 13 is a perspective view of control device 14 shown in FIG. As shown, the controller 14 includes a controller body 200 comprising at least one component housing 202 having at least one user interface 204 coupled thereto. The user interface 204 may include at least one user actuator, switch or information display. For example, in the illustrated embodiment, the user interface 204 includes a power button 206 and at least one information and / or alphanumeric display 208. However, one skilled in the art will recognize that any number of buttons, switches, displays, etc. may be included in controller 14. For example, in one embodiment, the information display 208 may be configured to display a number of kW / m ² . However, one skilled in the art will recognize that the information display 208 can be configured to display any of a variety of information. In another embodiment, the information display 208 comprises an LED display. Optionally, the information display 208 may comprise a touch screen device. In short, any of a variety of displays may be used with controller 204.

  Referring back to FIG. 13, controller 14 may include at least one spectrum control system 210. For example, in the illustrated embodiment, the spectrum control system 210 includes one or more distinguishable wavelength range power control actuators 212, distinguishable wavelength range power designators 214, and distinguishable wavelength range power indicators 216. For example, in one embodiment, the first wavelength range power control actuator 212A and the first wavelength range power indicator 216A cooperate with the wavelength range actuator 218 to provide the first and second LED arrays 94 of the light source head 50. , 96 may be configured to selectively change the output power / intensity of the corresponding LED wavelength group (see paragraph 0028 and FIGS. 7-10). This allows the user to selectively change the spectral characteristics of the output of the LED light source 12 (see FIG. 1).

  As shown in FIG. 13, the wavelength spectrum control system 210 may include one or more wavelength range actuators 218 and a wavelength range actuator controller 220. The wavelength range actuator 218 may be configured to cooperate with the wavelength range power control 212 and the wavelength range power indicator 216 to allow the user to adjust the power / intensity of the desired wavelength range. For example, in use, the user may activate the power control actuator 212A in the first wavelength range, thereby powering the output signal of the LED light source 12 within the wavelength range indicated by the power designator 214A in the first wavelength range. / Allows changes in strength. The user may then activate the wavelength range actuator 218 to increase or decrease the spectral characteristics of the output from the LED light source 12 (see FIG. 1) within the wavelength range indicated by the power designator 214A of the first wavelength range. The change in output power / intensity within the desired range is indicated by the power indicator 216A of the wavelength range corresponding to the power designator 214A of the first wavelength range. Once the desired spectrum is achieved, the user may activate the power control 212A of the first wavelength range to prevent further modification of the output wavelength spectrum.

  Referring again to FIG. 13, at least one wavelength range actuator controller 220 may be included in controller 14. In one embodiment, wavelength range actuator controller 220 may be configured to provide any of a variety of functions. In one embodiment, the wavelength range actuator controller 220 operates as a master controller of the wavelength range actuator 218 to allow or limit the capacity of the wavelength range actuator 218 to set the power / intensity settings of the controller 14. change. In another embodiment, wavelength range actuator control 220 may be configured to perform a scaling function for input from wavelength range actuator 218. For example, the wavelength range actuator 218 and the unpowered wavelength range actuator controller 220 may be configured to allow selective control of output power / intensity in units of 10 watts. Meanwhile, the wavelength range actuator 218 and the activated wavelength range actuator controller 220 may be configured to allow selective control of the output power / intensity in units of 100 watts. In another embodiment, the wavelength range actuator 218 and the wavelength range actuator controller 220 allow the user to scroll through various preloaded or stored wavelength spectra stored in a memory device located within the controller 14. To be acceptable.

  As shown in FIG. 13, controller 14 may optionally include one or more additional actuators, displays, and the like. For example, in the illustrated embodiment, controller 14 includes at least one intensity calibration actuator 222 and at least one spectral actuator 224. Similar to the wavelength range actuator controller 220 described above, the intensity calibration actuator 222 and the spectrum actuator 224 allow the user to adjust the spectrum and intensity of the output wavelength based on user input via the wavelength range actuator 218 Alternatively, it is possible to select from any number of output profiles preloaded or stored in the controller 14 of an external storage device (not shown) in communication with the controller 14.

  Referring again to FIG. 13, at least one control circuit and power supply are positioned within component housing 202 of controller body 200. In one embodiment, at least one microcontroller 228 and at least one power supply 230 are positioned therein. The microcontroller 228 receives and transfers input from the user through the various components that make up the user interface 204 and controls the operation of the LED light source accordingly. Similarly, microcontroller 228 receives data from the LED light source and transfers the data to the user. Additionally, microcontroller 228 may include at least one storage device internally to allow the user to store data therein. Further, microcontroller 228 may be configured to communicate with one or more external processors, computers, networks, memory devices, etc. via conduits, wirelessly, or both. In one embodiment, the power supply 230 is configured to provide power to the LED light source 12, at least one of the controller 14, or both. Alternatively, the power supply 230 may include an AC power source, a DC power source, an AD converter, and the like.

  As shown in FIG. 13, one or more LED array control boards 232 may be positioned within the component housing 202 of the controller body 200. The LED array control board 232 can communicate with the microcontroller 228 and at least one LED group formed on the LED arrays 94 and 96 (see FIGS. 8 to 10), and the user forms on the LED arrays 94 and 96. It is possible to control the output of the specific LED group to change the output wavelength spectrum. For example, in one embodiment, each LED control board 232 controls the output of a particular group of LEDs formed on the LED array 94, 96 to provide spectral characteristics of the output signal from the LED light source 12 (see FIG. 1), It includes one or more control circuits configured to change power, brightness, intensity, etc. In one embodiment, the LED control board 232 is provided to a particular group of LEDs formed on the LED arrays 94, 96 in response to at least one command provided from the microprocessor 228 to the LED control board 232. Change voltage or current. Optionally, any number of LED array control boards 232 may be included in component housing 202 of controller body 200. Additionally, at least one additional device 234 may be included within the component housing 202 of the controller body 200. For example, in one embodiment, the additional device includes a power supply. In another embodiment, the additional device includes a wireless communication device, whereby the controller 14 wirelessly to at least one of the LED light source 12, the external computer and / or the processor (not shown), or both. Allow to communicate. Additionally, additional device 234 may include storage that allows the user to store and / or access at least one data library for controller 14.

  The embodiments disclosed herein are illustrative of the principles of the present invention. Other modifications within the scope of the present invention may be employed. Accordingly, the devices disclosed herein are not limited to what has been particularly shown and described herein.

Claims (19)

A method of reproducing the spectrum of sunlight,
Providing at least one LED-based light source formed of at least one LED array comprising a plurality of LED assemblies of LEDs;
Activating at least one of the plurality of LED groups to output at least one output light signal within a respective wavelength range;
Combining the output light signals from the plurality of LED groups to generate at least one broad spectrum output signal using at least one diffractive element;
Selectively altering at least one characteristic of the broad spectrum output signal and directing the broad spectrum output signal to at least one work surface;
Illuminating the at least one work surface with at least two alignment light signals output by at least two alignment devices positioned on the LED-based light source and configured to intersect at an angle;
Adjusting the position of the LED-based light source until the LED-based light source is positioned at a desired height from the work surface and the alignment light signal intersects;
A method characterized in that it comprises. The method of claim 1, further comprising the step of selectively varying the power of the at least one output light signal output by the plurality of LED groups in each LED array. The method of claim 1, further comprising the step of selectively altering the intensity of the at least one output light signal output by the plurality of LED groups in each LED array. The method of claim 1, further comprising controlling the power of the at least one broad spectrum output signal by activating a power control actuator of at least one wavelength range. The method according to claim 1, further comprising controlling the intensity of the at least one broad spectrum output signal by activating a power control actuator in at least one wavelength range. The method of claim 1, further comprising controlling the at least one broad spectrum output signal with at least one wavelength spectrum control system. 7. The method of claim 6, further comprising displaying the power of the broad spectrum output signal on at least one wavelength power designator. Further comprising altering at least one characteristic of the at least one broad spectrum output signal using at least one microprocessor;
The microprocessor is in communication with at least one controller;
5. The method of claim 4, wherein the at least one controller is in communication with at least one of the LEDs of the plurality of LED assemblies. Further comprising altering at least one characteristic of the at least one broad spectrum output signal using at least one microprocessor;
The microprocessor is in communication with at least one controller;
6. The method of claim 5, wherein the at least one controller is in communication with at least one of the LEDs of the plurality of LED assemblies. A method of reproducing the spectral characteristics of the sun,
Providing at least one LED-based light source formed of at least one LED array comprising a plurality of LED assemblies of LEDs;
Starting up at least one of the plurality of LED groups to output at least one first output light signal within an individual wavelength range, while the plurality of LED groups cooperate to provide a wavelength spectrum Outputting at least one second output optical signal having;
At least one controller in communication with the at least one LED-based light source selectively controls the output of the at least one LED group, thereby selecting the wavelength spectrum of the at least one second output light signal Process to change
Illuminating at least one work surface with at least two alignment light signals output by at least two alignment devices positioned on the at least one LED-based light source and configured to intersect at an angle; ,
Adjusting the position of the at least one LED-based light source until the at least two LED-based light sources are located at a desired height from the at least one work surface such that the at least two alignment light signals intersect; Process,
A method characterized in that it comprises. 11. The method of claim 10, wherein the at least one controller communicates with the at least one LED-based light source via at least one conduit. The method of claim 10, wherein the at least one controller wirelessly communicates with the at least one LED-based light source. Intensity of said at least one first output light signal emitted from at least one LED group of at least one LED assembly of said at least one LED array by activating a power control actuator of at least one wavelength range Operating the at least one controller having at least one spectral control system by selectively changing
Identifying at least one wavelength of the at least one second output light signal emitted from the at least one LED group of the LED assembly by displaying the at least one wavelength on the at least one wavelength power designator; ,
Displaying the power of the at least one first output light signal emitted from the at least one LED group of the LED assembly on a power indicator of at least one wavelength range;
The method of claim 10, further comprising: The method of claim 13, further comprising displaying the output power of the at least one LED-based light source by at least one information display. Supplying power to the LEDs of the plurality of LED assemblies of the at least one controller and the at least one LED array by at least one power supply;
Controlling the at least one power supply by at least one microprocessor;
The LED group based on a command from the at least one microprocessor via a at least one LED array control board capable of communicating with a user at least one of the at least one power supply and the at least one LED group. Allowing to change at least one current signal supplied to the
The method of claim 10, further comprising: The method of claim 15, further comprising: allowing a user to change the current signal provided to the LEDs by the LED array control panel via at least one user interface. Method described. The method of claim 15, further comprising: allowing a user to communicate with the at least one microprocessor via at least one external processor. The method of claim 15, further comprising allowing a user to store data in one or more memory devices. Allowing the user to activate a power control actuator of at least one wavelength range, the at least one first output light signal emitted from at least one LED group of the LED assembly of the at least one LED array Providing at least one spectral control system in said at least one control device, allowing to selectively change the intensity of
Identifying the wavelength of the at least one first output light signal emitted from the at least one LED group of the LED assembly by the at least one wavelength power designator;
Of the at least one first output light signal emitted from the at least one LED group of the LED assembly to the power indicator of the at least one wavelength range within the at least one wavelength range specified by the wavelength power designator Displaying the output power;
A set of LEDs for the user to be selected by a power control actuator of the at least one wavelength range by activating the at least one wavelength range actuator within a wavelength range specified by the at least one wavelength power designator. Allowing to change the power of the at least one first output light signal emitted from the solid at least one LED group;
11. The method of claim 10, further comprising:

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