Illumination system

Abstract

A illumination system includes a light source, a thermal sensing module, and a processor. The light source has a light-emitting surface and is configured to emit an illuminating beam. The thermal sensing module has a lens module and a thermal sensing array. The lens module is disposed in front of the thermal sensing array. The processor is electrically connected to the light source and the thermal sensing module. When an object is imaged on the thermal sensing array by the lens module, the processor controls a brightness and a light pattern of the illumination beam according to a relative position between the object and the thermal sensing module.

Description

[Technical Field]

[0001] The present invention relates to an optical system, and more particularly to an illumination system. [Previous Technology]

[0002] Currently, most dimming control interfaces in market terminal products use traditional mechanical buttons, electronic switches, or capacitive touch buttons, which require manual pressing or touching. However, if hands are wet or dirty, operating the control interface may lead to detection errors or the risk of electric shock. [Summary of the Invention]

[0003] The present invention provides a lighting system that can provide better performance.

[0004] One embodiment of the present invention provides a lighting system including a light source, a thermal sensing module, and a processor. The light source has a light-emitting surface for emitting an illumination beam. The thermal sensing module includes a lens module and a thermal sensing array. The lens module is disposed in front of the thermal sensing array. The processor is electrically connected to the light source and the thermal sensing module. When an object is imaged onto the thermal sensing array via the lens module, the processor controls the brightness and light pattern of the illumination beam according to the relative position of the object and the thermal sensing module.

[0005] Based on the above, in a lighting system according to an embodiment of the present invention, a light source is used to emit an illumination beam. When an object is imaged onto a thermal sensing array by a lens module, the processor controls the brightness and light pattern of the illumination beam according to the relative position of the object and the thermal sensing module. Therefore, the lighting system can automatically adjust the brightness and light pattern of the light source according to the change in this relative position, and can define different brightness modes as needed. Compared with dimming designs using pressing or touching, the lighting system of the present invention offers better convenience and user experience, and avoids the dangers of detection errors or electric shock that may result from pressing or touching.

Implementation Method

[0006] FIG1A is a schematic diagram of a lighting system disposed on a substrate according to an embodiment of the present invention, showing a first side of the substrate. FIG1B is a schematic diagram of a lighting system disposed on a substrate according to an embodiment of the present invention, showing a second side of the substrate. FIG2 is a schematic diagram of a thermal sensing module in a lighting system according to an embodiment of the present invention. Referring to FIG1A, FIG1B and FIG2, an embodiment of the present invention provides a lighting system 10, which includes a light source 300, a thermal sensing module 200 and a processor 400. The light source 300 has a light-emitting surface 300S and is used to emit an illumination beam IL. The thermal sensing module 200 has a lens module 204 and a thermal sensing array 202. The lens module 204 is disposed in front of the thermal sensing array 202. The processor 400 is electrically connected to the light source 300 and the thermal sensing module 200. When an object U is imaged onto the thermal sensing array 202 via the lens module 204, the processor 400 controls the brightness and light pattern of the illumination beam IL according to the relative position of the object U and the thermal sensing module 200.

[0007] In detail, the light source 300, the thermal sensing module 200, and the processor 400 are adapted to be mounted (or externally attached) on a support member. The support member can be a substrate 100, a reflector, a display, or a video system, but the present invention does not limit the type or shape of the support member. For example, when the support member is a reflector, the lighting system 10 and the reflector can be integrated into a makeup mirror with a lighting function. When the support member is a display, the lighting system 10 can, for example, serve as a smart hanging light for the display. When the support member is a video system, the lighting system 10 and the video system can provide appropriate lighting or supplementary lighting based on the relative position of the user and the lighting system 10 when the user is live streaming. However, in another embodiment, the lighting system 10 may include the aforementioned support member.

[0008] Taking the lighting system 10 of Figures 1A and 1B as an example, which is disposed on the substrate 100, the substrate 100 may have holes or through holes, and the thermal sensing module 200 is embedded in the substrate 100, for example, in the holes or through holes. The light source 300 is disposed on the first side 100S1 of the substrate 100, and the processor 400 is disposed on the second side 100S2 of the substrate 100.

[0009] In this embodiment, the response frequency band of the thermal sensing array 202 can be long-wavelength infrared light, for example, the response frequency band of the thermal sensing array 202 is in the range of 8 μm to 14 μm. The lens module 204 includes, for example, an infrared pass lens. The infrared pass lens is made of a material that can pass through the response frequency band of the thermal sensing array 202, such as germanium, silicon, etc. In another embodiment, the infrared pass lens preferably allows wavelengths in the range of 8 μm to 14 μm to pass through, and filters other wavelength ranges, such as visible light, mid-wave infrared radiation, near-infrared light, etc., to reduce the interference caused by light in other wavelength ranges entering the system.

[0010] In this embodiment, the light source 300 can be a tungsten filament lamp, a light-emitting diode (LED) light source, a high-intensity discharge lamp (HID lamp), etc. The wavelength of the light source 300 can be visible light, but the present invention is not limited to this. Furthermore, the light source 300 must have adjustable output power and lumen output, and its driving method can be digital or analog.

[0011] In this embodiment, the light source 300 may be a single light source or composed of multiple light sources. For example, FIG1 illustrates that the light source 300 includes multiple sub-light sources 310, each sub-light source 310 having a sub-light-emitting surface 310S, and these sub-light-emitting surfaces 310S form a light-emitting surface 300S. The sub-light-emitting surface 310S may be a plane or an arbitrary curved surface. Furthermore, the placement position of the sub-light sources 310 can be determined according to design requirements, and the present invention is not limited to the placement position of the sub-light sources 310. For example, FIG1 illustrates that the sub-light sources 310 are symmetrically arranged at the left and right ends of the first side 100S1 of the substrate 100 with respect to the center of the substrate 100.

[0012] Please refer to FIG1B. For ease of illustration, FIG1B only shows the components related to the processor 400 in the lighting system 10 and omits the other components of the lighting system 10. In this embodiment, the lighting system 10 may also include a circuit board 40 disposed on the second side 100S2 of the substrate 100. The circuit board 40 may include a thermal sensing module 200 and a processor 400. The processor 400 may include, for example, a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a programmable controller, a programmable logic device (PLD), a graphics processing unit (GPU), or other similar devices or combinations thereof. The present invention is not limited to these devices. Furthermore, in one embodiment, the functions of the processor 400 may be implemented as multiple code snippets. These code snippets are stored in a memory unit and executed by the processor 400. Alternatively, in one embodiment, the functions of the processor 400 may be implemented as one or more circuits. This invention does not limit the implementation of the functions of the processor 400 in software or hardware.

[0013] Furthermore, in this embodiment, the processor 400 may include a microprocessor 410, a peripheral electronic circuit 420, a lamps dimming control interface, and a lamp control module. The microprocessor 410 receives signals output from the thermal sensing module 200, analyzes and judges the signals, and converts the analysis and judgment results into lamps dimming control signals. The lamps dimming control signals are output to the lamp control module via the lamps dimming control interface to control the brightness and light pattern of the illumination beam IL. The peripheral electronic circuit 420 may include external circuits and a carrier board required for the operation and driving of the thermal sensing array 202 and the microprocessor 410. Additionally, the lamps dimming control interface converts the lamps dimming control signals output by the microprocessor 410 into signals for driving the lamps, such as the Digital Addressable Lighting Interface (DALI) communication protocol.

[0014] Figures 3A to 3D are schematic diagrams of lighting systems according to other embodiments of the present invention, which are provided with different types of light sources. Please refer to Figure 3A first. In this embodiment, the lighting system 10A is similar to the lighting system 10 in Figure 1A. The main difference is that the sub-light source 310A in the light source 300A is disposed at the upper and lower ends of the substrate 100.

[0015] Please refer to Figure 3B. In this embodiment, the lighting system 10B is similar to the lighting system 10 in Figure 1A. The main difference is that the light source 300B includes four sub-light sources 310B, which are disposed at the top, bottom, left and right ends of the substrate 100.

[0016] Please refer to Figure 3C. In this embodiment, the lighting system 10C is similar to the lighting system 10 in Figure 1A. The main difference is that the shape of the sub-light source 310C of the light source 300C (which is circular) is different from the shape of the sub-light source 310 of the light source 300 in the lighting system 10 (which is rectangular).

[0017] Referring to FIG. 3D, in this embodiment, the lighting system 10D is similar to the lighting system 10 in FIG. 1A, the main difference being that the sub-light source 310D of the light source 300D can be disposed on the second side 100S2 of the substrate 100. The light source 300D emits an illumination beam IL in the direction opposite to the sensing direction of the thermal sensing module 200, so that the illumination beam IL produces an indirect illumination effect. The sensing direction of the aforementioned thermal sensing module 200 is suitable to be set to face the object U. However, in another embodiment, the substrate 100 may have light transmittance, so that a portion of the illumination beam IL emitted by the light source 300D mounted on the second side 100S2 of the substrate 100 can illuminate in the sensing direction of the thermal sensing module 200.

[0018] Figures 4A to 4C are schematic diagrams of lighting systems according to other embodiments of the present invention, which are provided with different types of thermal sensing modules. Please refer to Figure 4A first. In this embodiment, the lighting system 10E is similar to the lighting system 10 in Figure 1A. The main difference is that the thermal sensing module 200E is disposed at the lower end of the substrate 100.

[0019] Please refer to FIG4B. In this embodiment, the lighting system 10F is similar to the lighting system 10 in FIG1A. The main difference is that the thermal sensing module 200F includes multiple sub-thermal sensing modules 210F, and the sub-thermal sensing modules 210F are respectively disposed at the upper and lower ends of the substrate 100.

[0020] Please refer to FIG4C. In this embodiment, the lighting system 10G is similar to the lighting system 10 in FIG1A. The main difference is that the thermal sensing module 200G includes four sub-thermal sensing modules 210G, and the sub-thermal sensing modules 210G are respectively disposed at the four corners of the substrate 100.

[0021] FIG5 is a schematic diagram of a lighting system according to an embodiment of the present invention, in which the thermal sensing module includes only one thermal sensing pixel. Referring to FIG5, in this embodiment, the thermal sensing array 202 may include at least one thermal sensing pixel 212; or, the thermal sensing module 200 includes a plurality of sub-thermal sensing modules 210 (as shown in FIG4B and 4C), and the sub-thermal sensing array of each sub-thermal sensing module 210 includes at least one thermal sensing pixel 212. Wherein, as shown in FIG5, when the thermal sensing module 200 includes only one thermal sensing pixel 212, the signal sensed by the thermal sensing pixel 212 can be determined as the object U entering the illumination range of the lighting system 10.

[0022] Figures 6A to 6C are schematic diagrams showing changes in an object sensed by three thermal sensing pixels in a thermal sensing module of a lighting system according to an embodiment of the present invention. Referring to Figures 6A to 6C, in this embodiment, the number of thermal sensing pixels 212 is greater than or equal to 3, and at least three of the thermal sensing pixels 212 are arranged in a horizontal direction, wherein the horizontal direction can be defined as a direction parallel to the ground.

[0023] For example, Figure 6A illustrates that the number of thermal sensing pixels 212 that sense signals gradually increases, and the processor 400 can determine that the object U is gradually approaching the lighting system 10. Figure 6B illustrates that the number of thermal sensing pixels 212 that sense signals gradually increases from left to right, and the processor 400 can determine that the object U is moving from the left to the right of the lighting system 10. Similarly, Figure 6C illustrates that the number of thermal sensing pixels 212 that sense signals gradually increases from right to left, and the processor 400 can determine that the object U is moving from the right to the left of the lighting system 10. That is, when the thermal sensing module 200 includes only one thermal sensing pixel 212, the system can only determine whether the object U is in front of the lighting system 10. When the number of thermal sensing pixels 212 is greater than or equal to 3, the system can at least determine the distance or direction of the object U relative to the lighting system 10.

[0024] Figures 7A to 7C are schematic diagrams showing changes in an object sensed by thermal sensing pixels in a thermal sensing module of a lighting system according to an embodiment of the present invention. Referring to Figures 7A to 7C, similar to Figures 6A to 6C, Figure 7A can also be interpreted as the object U gradually approaching the lighting system 10, Figure 7B can also be interpreted as the object moving from left to right in the lighting system 10, and Figure 7C can also be interpreted as the object moving from right to left in the lighting system 10. Moreover, since the system has more thermal sensing pixels 212, the processor 400 can further determine the state and movement of the object U based on the pattern of the object U imaged on the thermal sensing array 202 and the changes in the pattern, so as to achieve a fine dimming effect and thus provide the user with a better experience.

[0025] However, in other embodiments, the thermal sensing module 200 may include multiple sub-thermal sensing modules 210, and each sub-thermal sensing module 210 may include at least one thermal sensing pixel 212, as shown in FIG4B or FIG4C. That is, when the viewing angle of the thermal sensing pixel 212 is large enough, the effect of FIG6A to FIG6C or FIG7A to FIG7C can be formed by pixel stitching. Since the higher the number of pixels of the sensing chip, the lower its chip yield, using more sub-thermal sensing modules 210 (but each sub-thermal sensing module 210 has fewer thermal sensing pixels 212) and using pixel stitching to generate the effect of multiple thermal sensing pixels 212 helps to reduce system cost.

[0026] Figures 8A and 8B are schematic diagrams showing that a thermal sensing pixel in the thermal sensing module of a lighting system according to an embodiment of the present invention senses an object entering the lighting range of the lighting system. Figures 11A and 11B are flowcharts showing how a lighting system according to an embodiment of the present invention adjusts the brightness and light pattern of an illumination beam. Referring to Figures 8A to 8B and Figure 11A, in this embodiment, the processor 400 is used to: determine that the object U has entered the lighting range of the lighting system 10 from the point when the thermal sensing module 200 has not sensed the object U until after sensing the object U (i.e., on the left side of Figure 8B), control the light source 300 to turn on, and set the brightness of the illumination beam IL to a first brightness. The first brightness can be set to a preset brightness or a minimum brightness. For example, the first brightness can be set to 10% brightness, but the present invention is not limited thereto.

[0027] Figures 9A and 9B are schematic diagrams of thermal sensing pixels in a thermal sensing module of an illumination system according to an embodiment of the present invention, showing how a processor determines whether an object is in a full-body or half-body state within the illumination range. Referring to Figures 9A to 9B and Figure 11B, in this embodiment, the processor 400 further adjusts the brightness of the illumination beam IL to a second brightness after determining that the object U is in a full-body state within the illumination range based on the pattern of the object U imaged on the thermal sensing array 202 (i.e., step S100 in Figure 11B). The second brightness is greater than or equal to the first brightness. For example, the second brightness may be set to 30% of the brightness, but the present invention is not limited thereto.

[0028] However, in another embodiment, the processor 400's determination that the object U is in a full-body state can also be equivalent to the thermal sensing module 200's state from never sensing the object U to sensing the object U. Therefore, the first brightness can be equal to the second brightness, as shown in FIG11B.

[0029] In this embodiment, the processor 400 is further configured to: after determining that the object U is in a half-body state within the illumination range based on the pattern (i.e., step S120 in FIG11B), the processor 400 adjusts the brightness of the illumination beam IL to a third brightness, wherein the third brightness is greater than the second brightness. For example, the third brightness may be set to 50% brightness, but the present invention is not limited thereto.

[0030] Figures 10A and 10B are schematic diagrams of thermal sensing pixels in a thermal sensing module of a lighting system according to an embodiment of the present invention, showing how a processor determines that an object is in a head state within the illumination range. Referring to Figures 10A to 10B and Figure 11B, in this embodiment, the processor 400 further adjusts the brightness of the illumination beam IL to a fourth brightness level after determining that the object U is in a head state within the illumination range based on the diagram (i.e., step S140 in Figure 11B). This fourth brightness level is greater than the third brightness level. For example, the fourth brightness level can be set to 90% brightness, but the present invention is not limited thereto.

[0031] In other words, Figures 8A to 10B sequentially illustrate how the object U gradually approaches the lighting system 10. In Figures 8A and 8B, the system determines that the object U has entered the lighting range, therefore turning on the light source 300 and adjusting the lighting beam IL to the lowest brightness. In Figures 9A and 9B, the system, for example, determines that the object U is in a state of tidying up clothing and grooming, therefore adjusting the lighting beam IL to a brightness other than the brightest. Next, in Figures 10A and 10B, the system determines that the object U is quite close to the lighting system 10, and judges from the outline of the image of the object U on the thermal sensing array 202 that it is in a head state, therefore the system, for example, determines that the object U is in a state of facial cleaning or makeup, and adjusts the lighting beam IL to a high brightness.

[0032] Figure 12 is another flowchart illustrating the adjustment of the brightness and light pattern of the illumination beam in an illumination system according to an embodiment of the present invention. For ease of explanation, the flowchart in Figure 11A is omitted in Figure 12. Referring to Figures 11A and 12, in this embodiment, the processor 400 further increases the brightness of the illumination beam IL after determining that the outline of the object U has increased based on the change in the pattern of the object U imaged on the thermal sensing array 202 (i.e., step S200). If the brightness has already reached the maximum brightness (which can be set to 90% brightness, but the present invention is not limited to this), the processor 400 does not adjust the brightness of the illumination beam IL.

[0033] In this embodiment, the processor 400 is further configured to: after determining that the outline of the object U has become smaller based on the change in the pattern of the object U imaged on the thermal sensing array 202 (i.e., step S220), the processor 400 reduces the brightness of the illumination beam IL. Wherein, if the brightness has already reached the minimum brightness, the processor 400 does not adjust the brightness of the illumination beam IL.

[0034] Figure 13 is another flowchart illustrating the adjustment of the brightness and light pattern of the illumination beam in an illumination system according to an embodiment of the present invention. For ease of explanation, the flowchart in Figure 11A is omitted in Figure 13. Referring to Figures 11A and 13, in this embodiment, the processor 400 is further configured to: determine the shape of the object U based on the pattern of the object U imaged on the thermal sensing array 202 (i.e., steps S300 to S320), and then adjust the brightness and light pattern of the illumination beam IL to a mode corresponding to the shape. For example, the shape of the object may include a full-body state, a half-body state, a head state, a side-face state, etc.

[0035] In addition, in one embodiment, the processor 400 can convert the signals sensed by the thermal sensing array 202 into temperature information. The processor 400 is further used to adjust the brightness and pattern of the illumination beam IL to correspond to the temperature information. For example, as shown in Figures 10A and 10B, based on the pattern of the object U imaged on the thermal sensing array 202, after the object U is determined to be in a head state, the system can locally adjust the brightness and pattern of the illumination beam IL according to the temperature of the object U. For example, if the temperature of the object U is higher at the forehead and lower at the chin, the system can reduce the brightness corresponding to the forehead and increase the brightness corresponding to the chin.

[0036] Furthermore, the number of objects U can be multiple, and the present invention is not limited to the number of detectable objects U. Therefore, the system can also generate corresponding brightness and light patterns for this situation.

[0037] In summary, in one embodiment of the present invention, the lighting system includes a light source, a thermal sensing module, and a processor. The light source is used to emit an illumination beam. The thermal sensing module has a lens module and a thermal sensing array. When an object is imaged onto the thermal sensing array by the lens module, the processor controls the brightness and light pattern of the illumination beam according to the relative position of the object and the thermal sensing module. Therefore, the lighting system can automatically adjust the brightness and light pattern of the light source according to the change in this relative position, and can define different brightness modes as needed. Compared with dimming designs using pressing or touching, the lighting system of the present invention offers better convenience and user experience, and avoids the danger of detection errors or electric shock that may result from pressing or touching. [Simplified Explanation of the Diagram]

[0038] FIG1A is a schematic diagram of a lighting system disposed on a substrate according to an embodiment of the present invention, showing a first side of the substrate. FIG1B is a schematic diagram of a lighting system disposed on a substrate according to an embodiment of the present invention, showing a second side of the substrate. FIG2 is a schematic diagram of a thermal sensing module in a lighting system according to an embodiment of the present invention. FIG3A to 3D are schematic diagrams of lighting systems according to other embodiments of the present invention, provided with different types of light sources. FIG4A to 4C are schematic diagrams of lighting systems according to other embodiments of the present invention, provided with different types of thermal sensing modules. FIG5 is a schematic diagram of a lighting system according to an embodiment of the present invention, where the thermal sensing module includes only one thermal sensing pixel. FIG6A to FIG6C are schematic diagrams of three thermal sensing pixels in the thermal sensing module of a lighting system according to an embodiment of the present invention sensing changes in an object. FIG7A to FIG7C are schematic diagrams of thermal sensing pixels in the thermal sensing module of a lighting system according to an embodiment of the present invention sensing changes in an object. FIG8A to FIG8B are schematic diagrams of thermal sensing pixels in the thermal sensing module of a lighting system according to an embodiment of the present invention sensing an object entering the illumination range of the lighting system. Figures 9A and 9B are schematic diagrams of thermal sensing pixels in a thermal sensing module of a lighting system according to an embodiment of the present invention, showing how the processor determines whether an object is in a full-body or half-body state within the illumination range. Figures 10A and 10B are schematic diagrams of thermal sensing pixels in a thermal sensing module of a lighting system according to an embodiment of the present invention, showing how the processor determines whether an object is in a head state within the illumination range. Figures 11A and 11B are flowcharts of adjusting the brightness and light pattern of an illumination beam in a lighting system according to an embodiment of the present invention. Figure 12 is another flowchart of adjusting the brightness and light pattern of an illumination beam in a lighting system according to an embodiment of the present invention. Figure 13 is yet another flowchart of adjusting the brightness and light pattern of an illumination beam in a lighting system according to an embodiment of the present invention.

Claims

1. A lighting system, comprising: A light source having a light-emitting surface for emitting a beam of illumination; A thermal sensing module includes a lens module and a thermal sensing array, wherein the lens module is disposed in front of the thermal sensing array; The system also includes a processor electrically connected to the light source and the thermal sensing module. When an object is imaged onto the thermal sensing array by the lens module, the processor controls the brightness and light pattern of the illumination beam based on the relative position of the object and the thermal sensing module. The processor is configured to: determine that the object has entered the illumination range of the lighting system from the point when the thermal sensing module has never detected the object until it has detected the object, control the light source to turn on, and set the brightness of the illumination beam to a first brightness.

2. The lighting system as claimed in claim 1, wherein the response frequency band of the thermal sensing array is in the range of 8 μm to 14 μm.

3. The lighting system as claimed in claim 1, wherein the light source includes a plurality of sub-light sources, each sub-light source having a sub-light-emitting surface, the sub-light-emitting surfaces forming the light-emitting surface.

4. The lighting system as claimed in claim 1, wherein the thermal sensing array includes at least one thermal sensing pixel.

5. The lighting system of claim 4, wherein the number of the at least one thermal sensing pixel is greater than or equal to 3, and at least three of the thermal sensing pixels are arranged in a horizontal direction.

6. The lighting system of claim 1, wherein the thermal sensing module includes a plurality of sub-thermal sensing modules, and the sub-thermal sensing array of each sub-thermal sensing module includes at least one thermal sensing pixel.

7. The lighting system as claimed in claim 1, wherein the lighting system is adapted to be mounted on a support, wherein the support is a substrate, a reflector, a display or a video system.

8. The lighting system as claimed in claim 7, further comprising the support member.

9. The lighting system of claim 1, wherein the processor is further configured to: after determining that the object is in a full-body state within the lighting range based on a pattern of the object imaged on the thermal sensing array, the processor adjusts the brightness of the lighting beam to a second brightness, wherein the second brightness is greater than or equal to the first brightness.

10. The lighting system of claim 9, wherein the processor is further configured to: after determining from the pattern that the object is in a half-body state within the lighting range, the processor adjusts the brightness of the lighting beam to a third brightness, wherein the third brightness is greater than the second brightness.

11. The lighting system of claim 10, wherein the processor is further configured to: after determining from the pattern that the object is in a head position within the lighting range, adjust the brightness of the lighting beam to a fourth brightness, wherein the fourth brightness is greater than the third brightness.

12. The lighting system of claim 1, wherein the processor is configured to: increase the brightness of the lighting beam after determining that the outline of the object has increased based on a change in the pattern of the object imaged on the thermal sensing array; and not adjust the brightness of the lighting beam if the brightness has already reached its maximum.

13. The lighting system of claim 1, wherein the processor is further configured to: reduce the brightness of the lighting beam after determining that the outline of the object has become smaller based on the change in the pattern of the object imaged on the thermal sensing array; and not adjust the brightness of the lighting beam if the brightness has already reached the minimum brightness.

14. The lighting system of claim 1, wherein the processor is configured to: determine the shape of the object based on the pattern of the object imaged on the thermal sensing array, and then adjust the brightness and the light pattern of the lighting beam to a mode corresponding to the shape.

15. The lighting system of claim 1, wherein the processor converts the signal sensed by the thermal sensing array into temperature information, the processor being used to: adjust the brightness and the light pattern of the lighting beam to a mode corresponding to the temperature information.

Images