A lighting system

Abstract

The present invention relates to the field of lighting technology, and in particular to a lighting system, comprising a light emitting unit, a light source substrate, a light guide rod, a light guide rod fixing assembly and an optical projection mechanism: the light emitting unit is arranged on the light source substrate, and can emit light of one or more wavelength bands, the light emitting unit is arranged in contact with the incident end of the light guide rod, and the light source substrate is fixedly connected to the light guide rod fixing assembly; the light guide rod fixing assembly is provided with an installation cavity for accommodating the light guide rod, the incident end and the exit end of the light guide rod can be exposed to the two ports of the installation cavity, and no stress is generated between the side edge of the light guide rod and the light guide rod fixing assembly; the optical projection mechanism comprises a converging lens, a focusing lens and a lens connector, and the lens connector is fixedly connected to the light guide rod fixing assembly. The incident surface of the converging lens faces the exit end of the light guide rod, and the incident surface of at least one focusing lens is used to receive light emitted by the exit surface of the converging lens. The present invention can effectively reduce the complexity of operation.

Description

Technical Field

[0001] The present invention relates to the field of lighting technology, and in particular to a lighting system. Background Art

[0002] The output light of the lighting system needs to meet certain light intensity, wavelength and uniformity conditions. An optical system is usually used to adjust the light emitted by the light-emitting unit. In particular, for lighting systems with multi-band light-emitting units, it is necessary to couple multiple bands of light by beam combining to obtain output light that meets the conditions. Currently, multiple groups of optical collimation systems composed of multiple prisms or dichroic mirrors are generally used to combine multi-band light. However, during the beam combining process, the light-emitting units of each band need to have consistent optical axes in the emission direction, which makes installation and adjustment very difficult and costly. Therefore, it is necessary to provide a lighting system with a simple beam combining method and low installation and adjustment difficulty to reduce production costs and operational complexity. Summary of the invention

[0003] The present invention provides a lighting system, characterized in that it comprises a light-emitting unit, a light source substrate, a light guide rod, a light guide rod fixing assembly and an optical projection mechanism:

[0004] The light emitting unit is arranged on the light source substrate, and can emit light of one or more wavelength bands. The light emitting unit is arranged in contact with the incident end of the light guide rod, and the light source substrate is fixedly connected to the light guide rod fixing assembly;

[0005] The light guide rod fixing assembly is provided with a mounting cavity for accommodating the light guide rod, the incident end and the output end of the light guide rod can be exposed to two ports of the mounting cavity, and no stress is generated between the side edges of the light guide rod and the light guide rod fixing assembly;

[0006] The optical projection mechanism includes a converging lens, at least one focusing lens and a lens connector, wherein the lens connector is fixedly connected to the light guide rod fixing assembly, the incident surface of the converging lens faces the exit end of the light guide rod, and the incident surface of the at least one focusing lens is used to receive the light emitted by the exit surface of the converging lens.

[0007] The lighting system provided by the present invention has the following technical effects: the present invention utilizes a light guide rod and an optical projection mechanism provided with a group of lens groups to achieve the adjustment of one band or multiple bands of light, the light adjustment method is simple and the installation and adjustment difficulty is small, and the operation complexity and production cost are effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0009] Figure 1 : A cross-sectional view of a lighting system provided by an embodiment of the present invention;

[0010] Figure 2 : A three-dimensional structural diagram of a lighting system provided by an embodiment of the present invention;

[0011] Figure 3 : An exploded view of some components of a lighting system provided by an embodiment of the present invention;

[0012] Figure 4 : A cross-sectional view of some components of a lighting system provided by an embodiment of the present invention;

[0013] Figure 5 : A three-dimensional diagram of a light guide rod fixing base provided by an embodiment of the present invention;

[0014] Figure 6 : A cross-sectional view of a light guide rod fixing base provided by an embodiment of the present invention;

[0015] Figure 7 : Figure 5 Enlarged view of the boxed area;

[0016] Figure 8 : A three-dimensional diagram of a light guide rod cover provided by an embodiment of the present invention;

[0017] Fig. 9 : A cross-sectional view of some components of another lighting system provided by an embodiment of the present invention;

[0018] Fig.10 : Fig. 9 An exploded diagram of some components of the lighting system;

[0019] Fig.11 : A three-dimensional diagram of a light guide rod mounting member provided by an embodiment of the present invention;

[0020] Fig.12 : A three-dimensional diagram of a light guide rod holder provided by an embodiment of the present invention;

[0021] Fig.13 : A structural block diagram of a lighting system control device provided by an embodiment of the present invention;

[0022] Fig.14 : A structural diagram of each lens in the optical projection mechanism provided by an embodiment of the present invention;

[0023] In the figure: 110-light-emitting unit, 120-light source substrate, 200-light guide rod, 310-mounting cavity, 320-light guide rod fixing base, 321-mounting groove, 322-converging lens connecting surface, 323-first mounting hole, 330-light guide rod cover, 331-second mounting hole, 340-air-avoiding groove, 350-light guide rod mounting member, 351-connecting part, 352-positioning pin, 353-light guide rod sleeve, 354-clamping sheet, 355-converging lens sink, 356-gap, 360-light guide rod seat, 361-positioning groove, 362-concentric positioning column, 363-sleeve cavity, 364-first end surface, 365- The second end face, 366-installation window, 367-installation hole, 370-light guide rod fastener, 380-airproof sink, 410-converging lens, 420-focusing lens, 430-converging lens connecting plate, 431-converging lens mounting through hole, 440-converging lens pressure ring, 450-focusing lens connecting plate, 451-guard, 460-sliding connector, 470-focusing lens pressure ring, 480-light output lens, 500-focusing structure, 610-heat sink, 620-fan, 700-box, 710-front cover, 711-light output interface, 720-side panel, 730-rear cover, 740-air inlet, 750-air outlet. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, device, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0026] The embodiments are described below with reference to the accompanying drawings, which do not limit the invention described in the claims in any way.

[0027] Please refer to Figure 1-13 The embodiment of the present disclosure provides a lighting system, including a light emitting unit 110, a light source substrate 120, a light guide rod 200, a light guide rod fixing assembly and an optical projection mechanism: the light emitting unit 110 is arranged on the light source substrate 120, and can emit light of one or more wavelength bands, the light emitting unit 110 is arranged in contact with the incident end of the light guide rod 200, the light source substrate 120 is fixedly connected to the light guide rod fixing assembly; the light guide rod fixing assembly is provided with an installation cavity 310 for accommodating the light guide rod 200, the light guide rod 200 is fixedly connected to the light guide rod fixing assembly, and the light guide rod fixing assembly is provided with an installation cavity 310 for accommodating the light guide rod 200. The incident end and the exit end of 00 can be exposed to the two ports of the mounting cavity 310, and no stress is generated between the side edges of the light guide rod 200 and the light guide rod fixing assembly; the optical projection mechanism includes a converging lens 410, at least one focusing lens 420 and a lens connector, and the lens connector is fixedly connected to the light guide rod fixing assembly, the incident surface of the converging lens 410 faces the exit end of the light guide rod 200, and the incident surface of the at least one focusing lens 420 is used to receive the light emitted by the exit surface of the converging lens 410.

[0028] In this way, the present invention utilizes the light guide rod 200 and an optical projection mechanism provided with a group of lens groups to achieve the adjustment of one band or multiple bands of light. The light adjustment method is simple and the adjustment difficulty is small, which effectively reduces the operation complexity and production cost.

[0029] In the disclosed embodiment, the light guide rod 200 has a prism and / or pyramid structure, and the mounting cavity 310 is arranged along the axial direction of the light guide rod 200 .

[0030] In the disclosed embodiment, the converging lens 410 and the light guide rod are coaxially arranged.

[0031] In the embodiment of the present disclosure, the exit surface of the converging lens 410 faces the incident surface of at least one focusing lens 420 .

[0032] In the embodiment of the present disclosure, the optical projection mechanism includes L focusing lenses 420, where L is a positive integer greater than or equal to 1, and the L focusing lenses 420 are used to adjust the light emitted by the converging lens 410 to preset light, and the preset light is light that meets the light output requirement of the lighting system.

[0033] In some embodiments, the converging lens 410 is coaxially disposed with at least one focusing lens 420 .

[0034] In some embodiments, L is equal to 1, that is, the optical projection mechanism includes a focusing lens 420, and the light guide rod 200, the converging lens 410 and the focusing lens 420 are coaxially arranged.

[0035] Based on some or all of the above embodiments, in an embodiment of the present disclosure, the optical projection mechanism further includes a light output lens 480 , and an incident surface of the light output lens 480 is used to receive output light from at least one focusing lens 420 .

[0036] In some embodiments, the light output lens 480 is used to output the light adjusted by all the focusing lenses, and can be disposed at the light output interface 711 of the lighting system.

[0037] Based on some or all of the above implementations, in the embodiments of the present disclosure, at least a portion of the light guide rod 200 is a prism and / or a prism structure.

[0038] In some embodiments, the light guide rod 200 may have a prism structure, and two bottom surfaces of the prism structure are the incident end surface and the emitting end surface of the light guide rod 200 .

[0039] In some other embodiments, the light guide rod 200 may have a prism structure, and two bottom surfaces of the prism structure are the incident end surface and the emitting end surface of the light guide rod 200 .

[0040] In other embodiments, the light guide rod 200 may have N prism structures with different bottom surface areas, wherein N is a positive integer greater than or equal to 2, and the N prism structures are connected end to end along their axial direction to form the light guide rod 200.

[0041] In other embodiments, the light guide rod 100 may have N prism structures with different bottom surface areas, wherein N is a positive integer greater than or equal to 2, and the N prism structures are connected end to end along their axial direction to form the light guide rod 200.

[0042] In other embodiments, the light guide rod 200 may have N1 prism structures with different bottom areas and N2 prism structures with different bottom areas, wherein N1 and N2 are positive integers greater than or equal to 1, and the prism structures and prism structures are connected end to end along their axial direction to form the light guide rod 200.

[0043] In practical applications, the lighting system can be applied to a microscope system, such as a fluorescence microscope system, etc., by multiple reflections of the emitted light of the light-emitting unit structure by the prism side of the light guide rod 200 and the adjustment of the optical projection mechanism, and finally emitting an output light with uniform intensity.

[0044] In some embodiments, please refer to Figure 3 or Fig.10 , the light guide rod 200 can be a straight quadrangular prism structure.

[0045] In the disclosed embodiment, the incident end and / or the exit end of the light guide rod 200 has a frosted surface. In some embodiments, one end of the light guide rod 200 has a frosted surface and the other end has a polished surface. The light guide rod 100 may be a solid or hollow structure.

[0046] In the embodiment of the present disclosure, the material of the light guide rod 200 may include but is not limited to glass or plastic. In one embodiment, the light guide rod 200 is made of quartz.

[0047] Based on some or all of the above embodiments, in the disclosed embodiment, when the light guide rod 200 is fixed in the installation cavity 310, the edges of the light guide rod 200 at the emission end do not contact the edges of the port of the installation cavity 310. In this way, no stress is generated between the light guide rod fixing assembly and the light guide rod during installation and use, thereby reducing the possibility of the edges of the light guide rod 200 being broken due to stress.

[0048] In some embodiments, please refer to Figure 4 and Fig. 9 A space-avoiding sink 380 is provided at the port of the mounting cavity 310 on the same side as the output end of the light guide rod 200, and the edges of the output end of the light guide rod 200 are located in the space-avoiding sink 380 to ensure that the edges of the output end of the light guide rod 200 do not contact the edges of the port of the mounting cavity 310.

[0049] In other embodiments, the side lengths of the port of the mounting through cavity 310 on the same side as the output end of the light guide rod 200 are greater than the side lengths of the corresponding output end of the light guide rod 200, so as to achieve that the edges of the output end of the light guide rod 200 do not contact the sides of the port of the mounting through cavity 310.

[0050] Based on some or all of the above embodiments, in the embodiment of the present disclosure, a converging lens connection surface 322 or a converging lens sink 355 is provided on the end surface of the light guide rod fixing assembly facing the converging lens 410, and the port of the installation through cavity 310 is located in the middle of the converging lens connection surface 322 or the converging lens sink 355. In this way, the converging lens 410 can be attached to the converging lens connection surface 322 or the converging lens sink 355, so that the light guide rod 200 and the converging lens 410 are coaxial.

[0051] In some embodiments, the converging lens 410 is a single-sided convex lens, the incident surface of which is a plane and is attached to the converging lens connecting surface 322 or the bottom surface of the converging lens sink 355 .

[0052] Based on some or all of the above embodiments, in the embodiment of the present disclosure, when the light guide rod 200 is accommodated in the installation cavity 310, the end surface of the light guide rod 200 at the exit end is flush with or slightly lower than the converging lens connection surface 322; or, the end surface of the light guide rod 200 at the exit end is flush with or slightly lower than the bottom surface of the converging lens sink 355. In this way, the light guide rod fixing assembly is used to protect the exit end of the light guide rod 200 and prevent it from being broken due to the stress between it and the converging lens 410.

[0053] Based on some or all of the above embodiments, please refer to 1 and 3. In the embodiment of the present disclosure, the lens connecting member includes a converging lens connecting plate 430 and a converging lens pressing ring 440. The converging lens connecting plate 430 is fixedly connected to the light guide rod fixing assembly. The converging lens connecting plate 430 is provided with a converging lens mounting through hole 431. The converging lens 410 is arranged in the converging lens mounting through hole 431. Through the converging lens pressing ring 440, the converging lens 410 can be fixed on the converging lens connecting surface 322 or the converging lens sink 355.

[0054] In some embodiments, the converging lens pressing ring 440 presses the converging lens 410 onto the converging lens connecting surface 322 or the converging lens sink 355 .

[0055] Based on some or all of the above embodiments, in an embodiment of the present disclosure, the lens connector includes at least one focusing lens connecting plate 450, and a focusing lens mounting through hole is provided on the focusing lens connecting plate 450, and the focusing lens 420 is arranged in the focusing lens mounting through hole.

[0056] In some embodiments, the lens connector further includes at least one focusing lens pressing ring 470 , through which the focusing lens 420 can be pressed tightly into the focusing lens mounting through hole.

[0057] In some embodiments, a rib 451 is provided at the focusing lens mounting hole, so that the inner diameter of the focusing lens mounting hole is smaller than the major diameter of the focusing lens 420 , and the incident surface of the focusing lens 420 can be mounted on the rib 451 .

[0058] Based on some or all of the above-mentioned embodiments, in the embodiment of the present disclosure, the converging lens connecting plate 430 is slidably connected to at least one focusing lens connecting plate 450, and by adjusting the relative position of the converging lens connecting plate 430 and at least one focusing lens connecting plate 450, the axial distance between the converging lens 410 and at least one focusing lens 420 can be changed to adjust the direction of the emitted light and / or the size of the emitted light spot.

[0059] For specific embodiments, please refer to Figure 1The lens connecting member also includes a sliding connecting member 460, through which the converging lens connecting plate 430 and at least one focusing lens connecting plate 450 are slidably connected.

[0060] In one embodiment, the sliding connector 460 can be a slide rail, which includes a sliding member and a guide rail. The converging lens connecting plate 430 and the at least one focusing lens connecting plate 450 are selectively provided with the sliding member, and the guide rail is also provided on the other. By moving the sliding member on the guide rail, the relative movement of the converging lens connecting plate 430 and the at least one focusing lens connecting plate 450 is achieved.

[0061] Based on some or all of the above-mentioned embodiments, in an embodiment of the present disclosure, the optical projection mechanism also includes a focusing structure 500, and the focusing structure 500 is connected to at least one focusing lens connecting plate 450. The focusing structure 500 can drive at least one focusing lens connecting plate 450 to move relative to the converging lens connecting plate 430, thereby changing the axial distance between the converging lens 410 and at least one focusing lens 420.

[0062] Based on some or all of the above implementations, in the embodiment of the present disclosure, the light guide rod fixing assembly is connected to the light source substrate 120 via a fixing connector.

[0063] Based on some or all of the above embodiments, in the disclosed embodiment, the light guide rod fixing assembly is provided with a plurality of concentric positioning posts 362 on either the end surface facing the light emitting unit 110 or the light source substrate 120, and the other is provided with concentric positioning holes matching the concentric positioning posts 362. In this way, the light emitting area of ​​the light emitting unit 110 is aligned with and / or concentrically arranged with the light guide rod 200.

[0064] Based on some or all of the above embodiments, in some embodiments, the light guide rod fixing assembly includes a light guide rod fixing base 320 and a light guide rod cover 330; the first connecting surface of the light guide rod fixing base 320 and / or the second connecting surface of the light guide rod cover 330 are provided with an installation groove 321 for placing the light guide rod 200, and after the first connecting surface and the second connecting surface are connected, the installation groove 321 forms an installation cavity 310 capable of accommodating the light guide rod 200.

[0065] Furthermore, in some embodiments, the installation groove 321 is selectively formed on the first connection surface and the second connection surface. After the first connection surface and the second connection surface are connected, the installation groove 321 forms the installation cavity 310.

[0066] Further, in some other embodiments, please refer to Figure 3The mounting groove 321 includes a first mounting groove and a second mounting groove, the first mounting groove is opened on the first connecting surface, and the second mounting groove is opened on the second connecting surface; after the first connecting surface and the second connecting surface are connected, the first mounting groove and the second mounting groove form the mounting cavity 310.

[0067] Furthermore, a clearance groove 340 is provided on the side wall of the installation cavity 310 at a position corresponding to the side edge of the light guide rod 200. When the light guide rod 200 is accommodated in the installation cavity 310, each side edge of the light guide rod 200 is located in the clearance groove 340 and does not contact the side wall of the installation cavity 310, so that no stress is generated between the side edge of the light guide rod 200 and the light guide rod fixing assembly. In this way, the possibility of the side edge of the light guide rod 200 being broken due to stress is reduced during installation and use.

[0068] Further, when the first connecting surface and the second connecting surface are connected, a converging lens connecting surface 322 is formed on one side of the light guide rod fixing base 320 and the light guide rod cover 330; or, on the side facing the converging lens 410, a first sink is provided on the light guide rod fixing base 320, and a second sink is provided on the light guide rod cover 330, and when the first connecting surface and the second connecting surface are connected, the first sink and the second sink form a converging lens sink.

[0069] Based on some or all of the above implementations, in other embodiments, please refer to Figure 10-12 The light guide rod fixing assembly includes a light guide rod mounting member 350 and a light guide rod seat 360. The light guide rod mounting member 350 is provided with a connecting portion 351 and a light guide rod sleeve 353 at opposite ends thereof. The mounting through cavity 310 passes through the connecting portion 351 and the light guide rod sleeve 353. The light guide rod seat 360 is provided with a sleeve through cavity 363 for inserting the light guide rod sleeve 353. When the light guide rod sleeve 353 is inserted into the sleeve through cavity 363, the connecting portion 351 is placed on a first end surface 364 of the light guide rod seat 360. A second end surface 365 of the light guide rod seat 360, which is opposite to the first end surface 364, is fixedly connected to the light source substrate 120.

[0070] Furthermore, the light guide rod fixing assembly further includes a light guide rod fastener 370 , and the light guide rod 200 can be fixed in the installation cavity 310 by sleeve-mounting the light guide rod fastener 370 on the outside of the light guide rod sleeve 353 .

[0071] For further information, please refer to Fig.11The light guide rod sleeve 353 includes a plurality of clamping pieces 354 arranged at intervals, and there is a gap 356 between adjacent clamping pieces 354. When the light guide rod 200 is fixed in the installation cavity 310, the clamping pieces 354 are in contact with the side of the light guide rod 200, and the side edges of the light guide rod 200 are exposed in the gap 356, so that no stress is generated between the side edges of the light guide rod 200 and the light guide rod fixing assembly. In this way, the possibility of the side edges of the light guide rod 200 being broken due to stress is reduced during installation and use.

[0072] Based on some or all of the above implementations, in some embodiments, please refer to Figure 1 The lighting system also includes a heat sink 610 and a fan 620. The light source substrate 120 is arranged on the heat absorption end of the heat sink 610. The heat absorption end of the heat sink 610 is also fixedly connected to the light guide rod fixing assembly. The fan 620 is arranged adjacent to the heat dissipation end of the heat sink 610.

[0073] Furthermore, in some embodiments, a light emitting unit mounting surface is provided on the heat absorbing end of the heat sink 610 for mounting the light source substrate 120 , and the light source substrate 120 is fixedly connected to the light emitting unit mounting surface.

[0074] Furthermore, in some embodiments, the heat sink 610 may be an aluminum fin heat sink 610 , a semiconductor heat sink 610 , or a copper tube heat sink 610 .

[0075] Based on some or all of the above implementations, in other embodiments, the lighting system further includes a water-cooling heat sink for cooling the light-emitting unit structure.

[0076] Based on some or all of the above embodiments, in an embodiment of the present disclosure, the lighting system also includes a box body 700, in which the light-emitting unit 110, the light source substrate 120, the light guide rod 200, the light guide rod fixing assembly and the optical projection mechanism are arranged, and the front cover 710 is provided with a light output interface 711 for emitting light regulated by the optical projection mechanism, and the output light of the optical projection mechanism can be irradiated to other structures through the light output interface 711.

[0077] Furthermore, in some embodiments, at least one focusing lens 420 is disposed close to the front cover 710 of the box 700. In other embodiments, the light output lens 480 of the optical projection mechanism is disposed close to the front cover 710 of the box 700.

[0078] Furthermore, in some embodiments, the light output interface 711 is used to connect to a microscope mount or other optical connectors to connect to a microscope system or other structures, such as a fluorescence microscope system.

[0079] Furthermore, in some embodiments, the light output interface 711, the optical projection mechanism, the light guide rod 200 and the light guide rod fixing assembly, the light emitting unit 110, the light source substrate 120, the heat sink 610 and the fan 620 are sequentially arranged from the front cover 710 to the rear cover 730 in the box body 700, and an air inlet 740 and an air outlet 750 are provided on the box body 700. A control circuit board is installed on the inner wall of the box body 700, and the control circuit board is arranged close to the air outlet 750 and away from the air inlet 740.

[0080] Based on some or all of the above implementations, in the embodiments of the present disclosure, the light-emitting unit 110 is an LED light source module, including LED chips of one or more light-emitting bands.

[0081] In some embodiments, part or all of the LED chips may be coated with phosphor or provided with phosphor sheets.

[0082] Based on some or all of the above-mentioned embodiments, in an embodiment of the present disclosure, the control device includes a constant voltage power supply module, at least one constant current control module and a main controller module, the output end of the constant voltage power supply module is electrically connected to the input end of the constant current control module and the main controller module, respectively, and the output end of the constant current control module is electrically connected to the input end of the LED chip.

[0083] Among them, the constant voltage power supply module is used to provide a stable voltage for the main controller module and the constant current control module; the constant current control module is used to convert the constant voltage output by the constant voltage power supply module into a constant current, and transmit the constant current to the LED chip.

[0084] Furthermore, the main controller module is used to send a switching signal and an analog voltage signal to the constant current control module, so that the constant current control module controls the opening and closing of the LED chip according to the switching signal, and performs stepless adjustment of the brightness of the LED chip according to the analog voltage signal.

[0085] The constant current control module can convert the constant voltage of the constant voltage power supply module into a current of a magnitude corresponding to the analog voltage signal, and output it to the LED chip on the same path to control the brightness of the LED chip.

[0086] Wherein, the LED chip line includes one or more LED chips.

[0087] In practical applications, the main controller module can independently control the on / off and brightness of each LED chip through the constant current control module. The main controller module can light up each LED chip simultaneously or in time-sharing mode, and can also light up the LED chips in different areas.

[0088] Furthermore, one constant current control module controls one LED chip correspondingly, and / or one constant current control module controls multiple LED chips correspondingly.

[0089] In some embodiments, one constant current control module controls one LED chip. In one implementation, the control device includes M constant current control modules, which control M LED chips, where M is a positive integer greater than or equal to 1.

[0090] In some embodiments, one constant current control module controls multiple LED chips. In one embodiment, the control device includes M constant current control modules, where M is a positive integer greater than or equal to 1. Each constant current control module controls multiple LED chips, and the main controller module can light up the corresponding multiple LED chips simultaneously or in time-sharing through each constant current control module, and can also light up the corresponding multiple LED chips in partitions.

[0091] Furthermore, each constant current control module can be switched by an electronic switch to connect different lines in time-sharing manner. One line can be provided with one LED chip, and / or one line can be provided with multiple LED chips at the same time.

[0092] In some embodiments, the control device includes M constant current control modules, where M is a positive integer greater than or equal to 1. Among them, the connection mode between at least one constant current control module and the LED chip is: one constant current control module corresponds to controlling one LED chip; the connection mode between at least one constant current control module and the LED chip is: one constant current control module corresponds to controlling multiple LED chips. Based on some or all of the above embodiments, in the embodiments of the present disclosure, the main controller module is provided with a brightness memory unit for storing the final analog voltage value of each constant current control module before closing. When one LED chip is turned on, the main controller module controls the brightness value of the LED chip according to the final analog voltage value.

[0093] Specifically, the main controller module reads the final analog voltage value, and converts the constant voltage of the constant voltage power supply module into a current corresponding to the final analog voltage value, so that the LED chip is lit at the brightness value before being turned off or powered off.

[0094] Based on some or all of the above-mentioned embodiments, in an embodiment of the present disclosure, the control device also includes a temperature monitoring circuit, which is used to output a temperature detection signal according to the collected temperature of the LED light-emitting unit module, and the main controller module can control the speed of the fan 620 according to the temperature detection signal, and / or the main controller module can also determine whether the temperature of the LED light-emitting unit module is greater than or equal to the power-off threshold according to the temperature detection signal, and if the judgment result is yes, send a shutdown signal to the constant current control module to shut down the LED light-emitting unit module.

[0095] Specifically, the higher the temperature of the LED light-emitting unit module is, the greater the rotation speed of the fan 620 is.

[0096] In some embodiments, the temperature detection signal can be a voltage or current signal. The higher the temperature of the LED module, the smaller the voltage or current signal. The main controller module receives the voltage or current signal, and after internal calculation processing, outputs a pulse width modulation (PWM) signal for controlling the speed of the fan 620.

[0097] In some embodiments, if the temperature of the LED light-emitting unit module is greater than or equal to the power-off threshold, the main controller module turns off all LED chips.

[0098] The lighting system provided by the present disclosure can adjust a band or multiple bands of light emitted by the light-emitting unit into an output light with uniform intensity by setting a light-emitting area, a light guide rod, a converging lens and at least one focusing lens of the light-emitting unit; and the distance between at least one focusing lens and the converging lens can be adjusted through the focusing structure to achieve adjustment of the output light direction and / or the size of the output light spot; in addition, the control device can control one LED chip individually or control multiple LED chips at the same time, steplessly adjust and memorize the brightness value of each LED chip, adjust the fan speed according to the temperature of the light-emitting unit structure, and provide power-off protection; the lighting system has a simple structure, is easy to install and adjust, and can meet different illumination brightness requirements.

[0099] Example 1

[0100] Please refer to Figure 1-8 and Fig.13 This embodiment provides a lighting system, which is provided with a box 700, which includes a front cover 710, a side cover 721, a top plate, a rear cover 730 and a bottom plate, and adjacent structures are fastened by screws. From back to front (the direction of the front cover 710 is the front, and the direction of the rear cover 730 is the rear), a fan 620, a heat sink 610, a light-emitting unit structure, a light-homogenizing mechanism, an optical projection mechanism and a focusing structure 500, and a light-emitting interface 711 are sequentially arranged in the box 700. In addition, a control circuit board is also arranged on the side cover 721 of the box 700.

[0101] The light emitting unit structure includes a light emitting unit 110 and a light source substrate 120, the light homogenizing mechanism includes a light guide rod 200 and a light guide rod fixing assembly, the optical collimation structure includes a converging lens 410, a focusing lens 420 and a lens connector, and the light guide rod 200, the converging lens 410 and a focusing lens 420 are coaxially arranged. In this embodiment, the converging lens 410 is a single-sided convex lens, and the focusing lens 420 is a double-sided convex lens.

[0102] For further information, please refer to Figure 2 , ventilation holes 750 are provided on the two side covers 721, and an air inlet 740 is provided on the back cover 730. When the fan 620 is in operation, ambient air is sucked in through the air inlet 740 and discharged through the ventilation holes 750. The control circuit board is away from the air inlet 740 and is arranged near the ventilation holes 750. In this way, the control circuit board is located on the air duct formed by the air flow. The fan 620 can improve the heat dissipation efficiency of the radiator 610 while also being able to cool the control circuit board.

[0103] The heat dissipation end of the heat sink 610 faces the fan 620. The end surface of the heat absorption end of the heat sink 610 is provided with a light-emitting unit mounting surface. The light source substrate 120 is mounted on the light-emitting unit mounting surface, which can be screwed, bonded or clamped. In this way, through the direct contact between the light-emitting unit structure and the heat sink 610, the thermal resistance between the light-emitting unit structure and the heat sink 610 can be reduced, and rapid heat dissipation and temperature reduction can be achieved.

[0104] The light-emitting unit 110 is fixedly connected to the light source substrate 120. In this embodiment, the light-emitting unit 110 is an LED light-emitting unit module, including LED chips of multiple light-emitting bands, the LED chips are coated with phosphors, the LED chips form a light-emitting area, and a cover is provided on the light-emitting area. In this embodiment, the LED light-emitting unit module has LED chips of four light-emitting bands. The LED light-emitting unit module is provided with multiple LED chips, and one LED chip includes at least one LED chip.

[0105] The light guide rod 200 is a quartz rod with a straight quadrangular prism structure, and its two end faces are respectively a frosted surface and a polished surface. The incident end is used to receive the light emitted by the light emitting unit 110 , and the output end is used to emit the light to the converging lens 410 .

[0106] The light guide rod fixing assembly includes a light guide rod fixing base 320 and a light guide rod cover plate 330; the light guide rod fixing base 320 is provided with a first connection surface, the light guide rod cover plate 330 is provided with a second connection surface for buckling on the first connection surface, and the first connection surface and the second connection surface are provided with a mounting groove 321 for placing the light guide rod 200, both ends of which penetrate the light guide rod fixing base 320 and the light guide rod cover plate 330, and the light guide rod 200 can be placed from the top surface of the mounting groove 321. When the second connection surface is buckled on the first connection surface, the mounting groove 321 forms a mounting through cavity 310 capable of accommodating the light guide rod 200, and the incident end of the light guide rod 200 can exceed the port of the mounting through cavity 310.

[0107] Furthermore, the light guide rod fixing base 320 and the light guide rod cover plate 330 are connected by snapping or by a fixed connector. In one embodiment, the light guide rod fixing base 320 is provided with a first mounting hole 323, and the light guide rod cover plate 330 is provided with a second mounting hole 331. After the first connecting surface and the second connecting surface are matched, the light guide rod fixing base 320 and the light guide rod cover plate 330 can be fixedly connected by setting a connector in the first mounting hole 323 and the second mounting hole 331.

[0108] Furthermore, the two opposite ends of the light guide rod fixing base 320 are fixedly connected to the heat sink 610 and the lens connector respectively. A light guide rod fixing base 320 is provided with a light emitting unit connection surface on the side facing the light emitting unit structure, which is on the same side as the incident end of the light guide rod 200. A concentric positioning column 362 is provided on the light source substrate 120, and a concentric positioning hole matching the concentric positioning column 362 is provided. After the concentric positioning column 362 is matched with the concentric positioning hole, the incident end of the light guide rod 200 can abut against the cover plate of the light emitting area, and the light guide rod 200 is concentric with the light emitting area of ​​the LED light emitting unit module. In addition, this side of the light guide rod fixing base 320 is fixedly connected to the end face of the heat sink 610.

[0109] Further, the side of the light guide rod fixing base 320 facing the converging lens 410 (the side of the light guide rod 200 exit end) has a first plane structure, and the side of the light guide rod cover plate 330 facing the converging lens 410 has a second plane structure. When the first connection surface and the second connection surface are buckled, the first plane structure and the second plane structure form a converging lens connection surface 322. The port of the installation through cavity 310 is located in the middle of the converging lens connection surface 322, so that the converging lens 410 and the light guide rod 200 can be coaxially arranged. The converging lens connection surface 322 protrudes from the large surface of the light guide rod fixing base 320 and the light guide rod cover plate 330, and is used to connect the incident surface of the converging lens 410.

[0110] Furthermore, the end face of the light guide rod 200 is flush with the converging lens connection surface 322, or slightly lower than the converging lens connection surface 322. After the incident surface of the converging lens 410 abuts against the converging lens connection surface 322, it contacts the end face of the light guide rod 200, or there is a small gap 356 between the end face of the light guide rod 200.

[0111] Furthermore, the mounting cavity 310 has a straight quadrangular prism structure that cooperates with the light guide rod 200, and its side walls are provided with air avoidance grooves 340 at positions corresponding to the side edges of the light guide rod 200. Specifically, they are arranged at the positions of the side edges of the mounting cavity 310. When the light guide rod 200 is placed in the mounting cavity 310, its side edges are located at the air avoidance grooves 340 and do not contact the side walls to avoid stress.

[0112] Furthermore, the light guide rod 200 exit end is matched with the port gap 356 of the installation cavity 310. In one embodiment, each side length of the port of the installation cavity 310 is greater than each side length of the corresponding light guide rod 200; in another embodiment, a space-avoiding sink 380 is provided at the port, so that the side wall and each edge of the port at this location avoid contact with the edges of each exit end of the light guide rod 200.

[0113] The lens connector includes a converging lens connecting plate 430, a converging lens pressing ring 440, a focusing lens connecting plate 450, a focusing lens pressing ring 470 and a sliding connector 460. The converging lens connecting plate 430 is fixedly connected to the side of the light guide rod fixing base 320 facing the converging lens 410. In this embodiment, the converging lens connecting plate 430 is a special-shaped plate. In one embodiment, it has a flat plate and a side plate bent along the flat plate. The flat plate of the converging lens connecting plate 430 is provided with a converging lens mounting through hole 431. The converging lens 410 is arranged in the converging lens mounting through hole 431. The protruding direction of the exit surface of the converging lens 410 is consistent with the extending direction of the side plate.

[0114] Furthermore, the converging lens pressing ring 440 is used to fix the converging lens 410 on the converging lens connecting surface 322. In this embodiment, the converging lens pressing ring 440 is annular, and its inner diameter is smaller than the major diameter of the converging lens 410, and can be screwed or clamped in the converging lens mounting through hole 431, so that the converging lens 410 abuts against the converging lens connecting surface 322 to limit the movement of the converging lens 410 in its axial direction. At this time, the converging lens mounting through hole 431 can limit the radial movement of the converging lens 410, so that the converging lens 410 is fixedly connected to the converging lens connecting plate 430.

[0115] Furthermore, a focusing lens connecting plate 450 is slidably connected to the converging lens connecting plate 430 via a sliding connector 460. In the present embodiment, the focusing lens connecting plate 450 has a similar structure to the converging lens connecting plate 430, and has a flat plate portion and a side plate bent along the flat plate. A focusing lens mounting through hole is provided on the flat plate of the focusing lens connecting plate 450, and the focusing lens 420 is disposed in the focusing lens mounting through hole, and the protruding direction of the exit surface of the focusing lens 420 is consistent with the extending direction of the side plate.

[0116] Further, the focus lens pressing ring 470 is used to fix the focus lens 420 in the focus lens mounting through hole, and a retaining edge 451 is provided at the focus lens mounting through hole, so that the inner diameter of the focus lens mounting through hole is smaller than the major diameter of the focus lens 420. In this embodiment, the focus lens pressing ring 470 is annular, and its inner diameter is smaller than the major diameter of the focus lens 420, and can be screwed or clamped in the focus lens mounting through hole, so that the incident surface of the focus lens 420 is mounted on the retaining edge 451 to limit the movement of the focus lens 420 in its axial direction. At this time, the focus lens mounting through hole can limit the radial movement of the focus lens 420, so that the focus lens 420 is fixedly connected to the focus lens connecting plate 450.

[0117] Furthermore, the focusing lens connecting plate 450 can be embedded in the space formed by the side plate and the flat plate of the converging lens connecting plate 430, and the two are slidably connected by a sliding connection member 460. The sliding connection member 460 is a slide rail, including a matching sliding member and a guide rail, the guide rail is arranged on the side plate at the bottom of the converging lens connecting plate 430, and the sliding member is arranged on the side plate at the bottom of the focusing lens connecting plate 450.

[0118] The focusing structure 500 is provided with a threaded portion and a handheld portion. The threaded portion passes through the side plate at the top of the converging lens connecting plate 430 and is screwed to the focusing lens connecting plate 450. The handheld portion is arranged outside the converging lens connecting plate 430. The side plate at the top of the converging lens connecting plate 430 is also provided with a groove, which is arranged along the axial direction of the focusing lens 420. The user can hold the handheld portion to make the threaded portion reciprocate in the groove, thereby driving the focusing lens connecting plate 450 to move, so that the sliding member reciprocates in the slide rail, and the focusing lens 420 moves relative to the converging lens 410 in the axial direction, thereby changing the axial distance between the converging lens 410 and the focusing lens 420 to adjust the size of the emitted light spot.

[0119] A light output interface 711 is provided in front of the focusing lens 420 , and the output light of the focusing lens 420 can pass through the light output interface 711 . The light output interface 711 is used to connect to a microscope holder or other optical connectors.

[0120] In this embodiment, please refer to Fig.13The lighting system also includes a control device, which includes a main controller module, a constant voltage power supply module and a multi-channel constant current control module. The output end of the constant voltage power supply module is electrically connected to the input end of the constant current control module and the main controller module respectively, providing a stable voltage for the main controller module and the constant current drive module. The output end of one constant current control module is electrically connected to the input end of one LED chip. The constant current control module is used to convert the constant voltage output by the constant voltage power supply module into a constant current, and transmit the constant current to the LED chip.

[0121] Furthermore, the main controller module is used to send two control signals to the constant current control module, namely a switching signal and an analog voltage signal, so that the constant current control module controls the opening and closing of the LED chip according to the switching signal, and outputs output currents of different sizes according to the analog voltage signal, so as to perform stepless adjustment on the brightness of the LED chip.

[0122] Specifically, the constant current control module includes a constant current control chip, which is provided with an enable pin. When the main controller module sends an enable signal, the electronic switch inside the constant current control chip is closed, and the constant current control chip works to light up the LED chip; when the main controller module sends a disable signal, the electronic switch inside the constant current control chip is opened, and the constant current control chip does not work to turn off the LED chip.

[0123] Specifically, the constant current control module is provided with a voltage pin, and the signal voltage on the voltage pin determines the output current of the constant current control module. When the analog voltage signal sent by the main controller module increases, the output current of the constant current control module increases, and vice versa, the output current of the constant current control module decreases, so as to achieve stepless adjustment of the brightness of the LED chip. Each constant current control module independently receives the control signal sent by the main controller module, so each LED chip can be independently switched on and off and steplessly dimmed.

[0124] Furthermore, the control device also includes a temperature monitoring circuit, which is used to output a temperature detection signal according to the collected temperature of the LED light-emitting unit module. The temperature detection signal can be a voltage signal. The higher the temperature, the lower the voltage signal. The main controller module detects the voltage signal, and after internal calculation processing, outputs a PWM pulse width modulation signal to control the speed of the fan 620. The higher the temperature of the LED light-emitting unit module, the greater the speed of the fan 620, and the fan can be adjusted steplessly.

[0125] At the same time, the main controller module can also determine whether the temperature of the LED light-emitting unit module is greater than or equal to the power-off threshold based on the temperature detection signal. If the judgment result is yes, the main controller module sends a shutdown signal to the constant current control module to shut down the LED light-emitting unit module.

[0126] Since the present invention uses a multi-channel constant current control module to control multiple channels of LED chips, and the LED chips on the module are of the same polarity, each channel of LED chips can be independently controlled to turn on and off, and steplessly dimmed. In addition, the current brightness value of each channel of LED chips can be memorized; the speed of the cooling fan can be adjusted in real time according to the real-time temperature of the LED light-emitting unit module to achieve the purpose of cooling on demand.

[0127] Furthermore, the main controller module can light up each LED chip simultaneously or in time through the constant current control module, and can also light up the LED chips in different areas. One constant current control module controls one LED chip, and / or one constant current control module controls multiple LED chips.

[0128] Example 2

[0129] Please refer to Figure 9-13 This embodiment provides a lighting system. The similarities with Embodiment 1 are not repeated here. The differences between the lighting system of this embodiment and Embodiment 1 are described as follows.

[0130] First, the light guide rod fixing assembly includes a light guide rod mounting member 350, a light guide rod seat 360 and a light guide rod fastener 370. The side profile of the light guide rod mounting member 350 is T-shaped, the upper part of the T-shaped portion is a connecting portion 351, and the lower part is a light guide rod sleeve 353. The installation cavity 310 passes through the connecting portion 351 and the light guide rod sleeve 353. The incident end of the light guide rod 200 is located on the side of the light guide rod sleeve 353, and the emitting end of the light guide rod 200 is located on the side of the connecting portion 351. The light guide rod fastener 370 can be sleeved on the outside of the light guide rod sleeve 353 to fix the light guide rod 200 in the installation cavity 310. In one embodiment, the light guide rod fastener 370 is screwed on the outside of the light guide rod sleeve 353.

[0131] The light guide rod seat 360 is provided with a sleeve cavity 363 for inserting the light guide rod sleeve 353. The major diameter of the connecting portion 351 is larger than the major diameter of the sleeve cavity 363. When the light guide rod sleeve 353 is inserted into the sleeve cavity 363, the connecting portion 351 is placed on the first end face 364 of the light guide rod seat 360. The second end face 365 of the light guide rod seat 360, which is opposite to the first end face 364, is fixedly connected to the light source substrate 120.

[0132] Furthermore, a positioning pin 352 is provided on the connecting portion 351, and a positioning groove 361 matching the positioning pin 352 is provided on the first end face 364 of the light guide rod seat 360. When the connecting portion 351 is placed on the first end face 364, the positioning pin 352 and the positioning groove 361 can be matched to fix the position of the light guide rod sleeve 353 in the sleeve cavity 363, thereby limiting the relative movement between the light guide rod mounting member 350 and the light guide rod seat 360.

[0133] Furthermore, the connection part 351 is provided with a converging lens submerged platform 355, and the incident surface of the converging lens 410 can be attached to the bottom surface of the converging lens submerged platform 355. The port for installing the through cavity 310 is arranged in the middle of the converging lens submerged platform 355, so that the light guide rod 200 is coaxial with the converging lens 410. The end surface of the light guide rod 200 at the exit end is flush with or slightly lower than the bottom surface of the converging lens submerged platform 355, so that the converging lens 410 contacts the end surface of the light guide rod 200 at the exit end, or has a small gap 356 with the end surface of the light guide rod 200 at the exit end.

[0134] Furthermore, the exit end of the light guide rod 200 is matched with the port gap 356 of the installation cavity 310. In one embodiment, the lengths of the sides of the port of the installation cavity 310 are greater than the lengths of the corresponding sides of the light guide rod 200; in another embodiment, a space-avoiding sink 380 is provided at the port, so that the side walls and edges of the port avoid contact with the edges of the exit ends of the light guide rod 200.

[0135] Furthermore, the light guide rod sleeve 353 includes four clamping plates 354 arranged at intervals, with a gap 356 between adjacent clamping plates 354. When the light guide rod 200 is fixed in the mounting cavity 310, the four clamping plates 354 respectively contact the four side surfaces of the light guide rod 200, and the four side edges of the light guide rod 200 are exposed in the gap 356.

[0136] A light-emitting unit connecting surface is provided on the second end surface 365 of the light guide rod seat 360, and a concentric positioning column 362 is provided on the light-emitting unit connecting surface. A concentric positioning hole matching the concentric positioning column 362 is provided on the light source substrate 120. After the concentric positioning column 362 cooperates with the concentric positioning hole, the incident end of the light guide rod 200 can abut against the cover plate of the light-emitting area, and the light guide rod 200 is concentric with the light-emitting area of ​​the LED light-emitting unit module.

[0137] The converging lens 410 and the light guide rod mounting member 350 are fixed on the light guide rod holder 360 via the converging lens pressing ring 440 . The converging lens pressing ring 440 can be matched and connected with the first end surface side of the light guide rod holder 360 , which can be snap-connected or screw-connected.

[0138] In one embodiment, the converging lens pressing ring 440 is provided with an internal thread, and the first end surface side of the light guide rod seat 360 is provided with an external thread. After the converging lens 410 is placed in the converging lens sink 355, the converging lens pressing ring 440 is screwed on the first end surface side of the light guide rod seat 360 to fix the converging lens 410 and press the connecting portion 351 of the light guide rod mounting member 350 against the first end surface 364 of the light guide rod seat 360 to limit the relative movement between the converging lens 410 and the connecting portion 351, and to limit the relative movement between the light guide rod seat 360 and the light guide rod mounting member 350. The converging lens pressing ring 440 can be clamped or mounted in the converging lens mounting through hole 431 of the converging lens connecting plate 430.

[0139] The second end surface 365 of the light guide rod holder 360 is connected to the heat sink 610 or the light source substrate 120 by a fixed connector, such as a screw. In one embodiment, at least one mounting window 366 is provided on the side of the light guide rod holder 360, and a mounting hole 367 is provided on the side frame of the mounting window 366 facing the heat sink 610, for setting a fixed connector connected to the heat sink 610 or the light source substrate 120.

[0140] Furthermore, in one embodiment, the connecting portion 351 of the light guide rod mounting member 350 is fixedly connected to the converging lens connecting plate 430 to achieve the fixation of the light guide rod fixing assembly. In another embodiment, the light guide rod fixing assembly further comprises a connecting block, on which the light guide rod mounting member 350 and the light guide rod holder 360 are connected and arranged to bear the weight of the light guide rod mounting member 350 and the light guide rod holder 360, and the two ends of the connecting block are respectively fixedly connected to the converging lens connecting plate 430 and the heat sink 610.

[0141] Furthermore, the main controller module is also provided with a brightness memory unit for storing the final analog voltage value of each constant current control module before being turned off. When a LED chip is turned on, the main controller module controls the brightness value of the LED chip according to the final analog voltage value. In one embodiment, when receiving a memory storage instruction, the main controller module will store the current final analog voltage value in the EEPROM. When the LED light-emitting unit module is restarted after power failure, the main controller module reads the current final analog voltage value of each memory from the EEPROM and controls the output current corresponding to the final analog voltage value to light up.

[0142] Example 3

[0143] This embodiment provides a lighting system. The similarities between the structure and the control device in Embodiment 1 or Embodiment 2 are not repeated here. The differences between the lighting system of this embodiment and Embodiment 1 and Embodiment 2 are described as follows.

[0144] Please refer to Fig.14 , Fig.14 The structure diagram of each lens in the optical projection mechanism provided by this embodiment is shown. As shown in the figure, the optical projection mechanism includes a converging lens 410, a focusing lens 420, a light-emitting lens 480 and a lens connector, a light-emitting interface 711 is provided in front of the light-emitting lens 480, and the exit surface of the light-emitting lens 480 is aligned with the light-emitting interface 711, so that the exit light of the light-emitting lens 480 can pass through the light-emitting interface 711.

[0145] Furthermore, the converging lens 410, the focusing lens 420 and the light emitting lens 480 are coaxially arranged.

[0146] Furthermore, the lens connector includes a light-emitting lens connecting plate (not shown), and the light-emitting lens 480 is disposed in a light-emitting lens mounting through hole of the light-emitting lens connecting plate.

[0147] In one embodiment, the light output lens 480 is fixed in the housing 700, and the light output lens 480 is fixed at a position close to the front cover through a light output lens connecting plate. The focusing lens 420 changes the axial distance between itself and the converging lens 410 by moving, and at the same time changes the axial distance between itself and the light output lens 480.

[0148] In another embodiment, the lens connector also includes a light output lens sliding connector (not shown), through which the light output lens 480 can move back and forth in the axial direction relative to the converging lens and / or the focusing lens to change the axial distance between the light output lens and / or the focusing lens, thereby achieving light setting and adjustment.

[0149] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0150] It should be noted that all the features recorded in this application (including technical features recorded in different embodiments) can be combined arbitrarily under reasonable circumstances, and new technical solutions formed by the combination are all within the protection scope of this application.

[0151] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An illumination system, applied to a microscopic illumination system, characterized in that: It comprises a light-emitting unit (110), a light source substrate (120), a light guide rod (200), a light guide rod fixing assembly and an optical projection mechanism: The light emitting unit (110) is arranged on the light source substrate (120) and is capable of emitting light of one or more wavelength bands; the light emitting unit (110) is arranged in contact with the incident end of the light guide rod (200); and the light source substrate (120) is fixedly connected to the light guide rod fixing assembly; The light guide rod fixing assembly is provided with a mounting cavity (310) for accommodating the light guide rod (200); the incident end and the emission end of the light guide rod (200) can be exposed to two ports of the mounting cavity (310); no stress is generated between the side edges of the light guide rod (200) and the light guide rod fixing assembly; the emission end of the light guide rod (200) is clearance-matched with the port of the mounting cavity (310); The optical projection mechanism comprises a converging lens (410), at least one focusing lens (420) and a lens connector, wherein the lens connector is fixedly connected to the light guide rod fixing assembly, the incident surface of the converging lens (410) faces the exit end of the light guide rod (200), and the incident surface of the at least one focusing lens (420) is used to receive light emitted by the exit surface of the converging lens (410); A converging lens sink (355) is provided on the end surface of the light guide rod fixing assembly facing the converging lens (410), and a port of the mounting through cavity (310) is located in the middle of the converging lens sink (355); The light guide rod fixing assembly comprises a light guide rod mounting piece (350) and a light guide rod seat (360); the light guide rod mounting piece (350) is provided with a connecting portion (351) and a light guide rod sleeve (353) at two opposite ends thereof; and the mounting through cavity (310) passes through the connecting portion (351) and the light guide rod sleeve (353); The light guide rod seat (360) is provided with a sleeve through cavity (363) for inserting the light guide rod sleeve (353); when the light guide rod sleeve (353) is inserted into the sleeve through cavity (363), the connecting portion (351) is placed on the first end surface (364) of the light guide rod seat (360); The light guide rod fixing assembly further comprises a light guide rod fastener (370), and the light guide rod (200) can be fixed in the installation through cavity (310) by sleeve-mounting the light guide rod fastener (370) outside the light guide rod sleeve (353).

2. The lighting system according to claim 1, characterized in that The light guide rod (200) has a prism and / or a prism structure, and the installation through cavity (310) is arranged along the axial direction of the light guide rod (200).

3. The lighting system according to claim 1, characterized in that The optical projection mechanism also includes a light output lens (480), wherein an incident surface of the light output lens (480) is used to receive output light from at least one focusing lens (420).

4. The lighting system according to claim 1, characterized in that When the light guide rod (200) is accommodated in the installation cavity (310), the end surface of the emission end of the light guide rod (200) is flush with or slightly lower than the bottom surface of the converging lens sink (355).

5. The lighting system according to claim 1, characterized in that: The lens connecting member comprises a converging lens connecting plate (430) and a converging lens pressing ring (440); the converging lens connecting plate (430) is fixedly connected to the light guide rod fixing assembly; a converging lens mounting through hole (431) is provided on the converging lens connecting plate (430); and the converging lens (410) is arranged in the converging lens mounting through hole (431); The converging lens (410) can be fixed on the converging lens sink (355) by means of the converging lens pressing ring (440).

6. The lighting system according to claim 1, characterized in that The lens connecting member comprises at least one focus lens connecting plate (450), a focus lens mounting through hole being provided on the focus lens connecting plate (450), and the focus lens (420) being arranged in the focus lens mounting through hole.

7. The lighting system according to claim 6, characterized in that The converging lens connecting plate (430) is slidably connected to at least one focusing lens connecting plate (450), and the axial distance between the converging lens (410) and the focusing lens (420) can be changed by adjusting the relative position of the converging lens connecting plate (430) and at least one focusing lens connecting plate (450).

8. The lighting system according to claim 7, characterized in that The optical projection mechanism further comprises a focusing structure (500), wherein the focusing structure (500) is connected to at least one focusing lens connecting plate (450), and the focusing structure (500) is capable of driving the at least one focusing lens connecting plate (450) to move relative to the converging lens connecting plate (430), thereby changing the axial distance between the converging lens (410) and the focusing lens (420).

9. The lighting system according to claim 1, characterized in that: One of the end surfaces of the light guide rod fixing assembly facing the light emitting unit (110) and the light source substrate (120) is provided with a plurality of concentric positioning columns (362), and the other is provided with concentric positioning holes matching the concentric positioning columns (362).

10. The lighting system according to claim 1, characterized in that When the light guide rod (200) is fixed in the installation cavity (310), the edges of the emission end of the light guide rod (200) do not contact the edges of the port of the installation cavity (310).

11. The lighting system according to claim 1, characterized in that: The light guide rod sleeve (353) comprises a plurality of clamping plates (354) arranged at intervals, with gaps (356) between adjacent clamping plates (354); when the light guide rod (200) is fixed in the mounting cavity (310), the clamping plates (354) are in contact with the side surfaces of the light guide rod (200), and the side edges of the light guide rod (200) are exposed in the gaps (356).

12. The lighting system according to claim 1, characterized in that The end surface of the incident end and / or the output end of the light guide rod (200) is a frosted surface.

13. The lighting system according to any one of claims 1 to 11, characterized in that: It also comprises a heat sink (610) and a fan (620), the light source substrate (120) being arranged on the heat absorbing end of the heat sink (610), the heat absorbing end of the heat sink (610) being fixedly connected to the light guide rod fixing assembly, and the fan (620) being arranged adjacent to the heat dissipation end of the heat sink (610).

14. The lighting system according to claim 1, characterized in that It also comprises a box body (700), wherein the light-emitting unit (110), the light source substrate (120), the light guide rod (200), the light guide rod fixing assembly and the optical projection mechanism are arranged in the box body (700), and the front cover (710) is provided with a light output interface (711) for emitting light regulated by the optical projection mechanism.

15. The lighting system according to claim 1, characterized in that The light-emitting unit (110) is an LED light-emitting unit module, comprising LED chips of one or more light-emitting bands.

16. The lighting system according to claim 15, characterized in that It also includes a control device, which includes a constant voltage power supply module, at least one constant current control module and a main controller module, the output end of the constant voltage power supply module is electrically connected to the input end of the constant current control module and the main controller module respectively, and the output end of the constant current control module is electrically connected to the input end of the LED chip; The main controller module is used to send a switch signal and an analog voltage signal to the constant current control module, so that the constant current control module controls the opening and closing of the LED chip according to the switch signal, and performs stepless adjustment on the brightness of the LED chip according to the analog voltage signal.

17. The lighting system according to claim 16, characterized in that The main controller module is provided with a brightness memory unit for storing the final analog voltage value of each constant current control module before being turned off. When a LED chip is turned on, the main controller module controls the brightness value of the LED chip according to the final analog voltage value.

18. The lighting system according to claim 17, characterized in that The control device further comprises a temperature monitoring circuit for outputting a temperature detection signal according to the collected temperature of the LED light-emitting unit module, and the main controller module can control the rotation speed of the fan (620) according to the temperature detection signal, and / or, The main controller module can also determine whether the temperature of the LED light-emitting unit module is greater than or equal to the power-off threshold according to the temperature detection signal. If the judgment result is yes, a shutdown signal is sent to the constant current control module to shut down the LED light-emitting unit module.

Images