CN208752382U - Lighting system and projection arrangement - Google Patents
Lighting system and projection arrangement Download PDFInfo
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- CN208752382U CN208752382U CN201821472589.5U CN201821472589U CN208752382U CN 208752382 U CN208752382 U CN 208752382U CN 201821472589 U CN201821472589 U CN 201821472589U CN 208752382 U CN208752382 U CN 208752382U
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- light source
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Abstract
The utility model proposes a kind of lighting system and projection arrangements.Lighting system includes excitation light source, optical element, light source drive, temperature sensing module and controller.Excitation light source is for issuing excitation beam.Optical element is located on the transmission path of excitation beam.Light source drive is for driving excitation light source.Temperature sensing module is located at the adjacent domain of optical element.Temperature sensing module is used to sense the temperature of the adjacent domain of optical element, to export sensing voltage.Controller is for receiving sensing voltage, to judge whether sensing voltage falls within outside predetermined voltage range, and for outputing control signals to light source drive, so that light source drive adjusts excitation beam.The lighting system and projection arrangement of the utility model can effectively judge whether the optical element being arranged in the illumination system damages, the excitation beam issued with corresponding adjustment excitation light source.
Description
Technical field
The utility model relates to a kind of optical system and the Optical devices comprising above-mentioned optical system, and especially
About a kind of lighting system and projection arrangement.
Background technique
As the application of laser (laser) shadow casting technique is more and more extensive, the brightness demand of laser projection device is got over
Come higher, therefore laser power used in laser projection device is also higher and higher.However, due to the inside of laser projection device
Optical element may lead to laser projection device because of component ageing, or because of board the reason of dropping or colliding
Internal optical component there is a situation where rupturing or damage, therefore laser beam (or excitation beam) is caused to fail in laser projection
It is transmitted in expection optical path inside device, other internal elements in turn resulting in laser projection device are damaged and influence user's
Safety.
" background technique " is partially used only to help to understand the content of the present invention, therefore is taken off in " background technique " part
The content of dew may include some known technologies without constituting road known to those skilled in the art.In " background technique " part institute
The content of exposure does not represent the content or the utility model one or more embodiment problem to be solved, practical at this
It has been readily known to those persons skilled in the art or has recognized before novel application.
Utility model content
The utility model, which provides a kind of lighting system and projection arrangement, can effectively judge to be arranged in the illumination system
Whether optical element damages, the excitation beam issued with corresponding adjustment excitation light source.
The other objects and advantages of the utility model can be obtained from the technical characteristic disclosed by the utility model into one
The understanding of step.
It is to propose one kind up to one of above-mentioned or part or all of purpose or other purposes, an embodiment of the utility model
Lighting system.Lighting system includes excitation light source, optical element, light source drive, temperature sensing module and controller.Excitation
Light source is for issuing excitation beam.Optical element is located at light source drive on the transmission path of excitation beam and is electrically connected exciting light
Source.Light source drive is for driving excitation light source.Temperature sensing module is located at the adjacent domain of optical element.Temperature sensing module
For sensing the temperature of the adjacent domain of optical element, to export sensing voltage.Controller is electrically connected light source drive and temperature
Spend sensing module.Controller to judge whether sensing voltage falls within outside predetermined voltage range, and is used for receiving sensing voltage
In outputing control signals to light source drive, so that light source drive adjusts excitation beam.
It is to propose one kind up to one of above-mentioned or part or all of purpose or other purposes, an embodiment of the utility model
Projection arrangement.Projection arrangement includes lighting system, light valve and projection lens.Lighting system is for providing illuminating bundle.Illumination
System includes excitation light source, optical element, light source drive, temperature sensing module and controller.Excitation light source is for issuing
Excitation beam.Optical element is located on the transmission path of excitation beam.Light source drive is electrically connected excitation light source.Light source drive
For driving excitation light source.Temperature sensing module is located at the adjacent domain of optical element.Temperature sensing module is for sensing optics
The temperature of the adjacent domain of element, to export sensing voltage.Controller is electrically connected light source drive and temperature sensing module.Control
Device processed is for receiving sensing voltage, to judge whether sensing voltage falls within outside predetermined voltage range, and for exporting control letter
Number to light source drive, so that light source drive adjusts excitation beam.Light valve is located on the transmission path of illuminating bundle, and uses
In illuminating bundle is converted into image strip.Projection lens is located on the transmission path of image strip, and is used for image light
Beam is converted into projected light beam.
Based on above-mentioned, the embodiments of the present invention at least have effects that following one of advantage or.It is practical new at this
In the embodiment of type, the inside of lighting system and projection arrangement is settable around the optical element for transmitting excitation beam
There is temperature sensing module, whether ruptures or damage effectively to monitor optical element by temperature sensing module.In this way, using
Person can safely operate the lighting system and projection arrangement of the utility model.Also, the embodiments of the present invention can monitor
Whether the excitation beam transmitted in above-mentioned lighting system and projection arrangement transmits in unexpected optical path, to learn immediately
Whether the optical element of transmitting excitation beam ruptures or damages, and adjusts excitation beam with corresponding.
In order to make the above-mentioned features and advantages of the utility model more obvious and understandable, special embodiment below, and cooperate attached drawing
It is described in detail below.
Detailed description of the invention
Fig. 1 is the functional block diagram according to the lighting system of an embodiment of the utility model.
Fig. 2 is the schematic diagram according to the projection arrangement of an embodiment of the utility model.
Fig. 3 is the schematic diagram according to the projection arrangement of another embodiment of the utility model.
Fig. 4 is the flow chart according to the illumination control method of an embodiment of the utility model.
Specific embodiment
In relation to addressing other technologies content, feature and effect before the utility model, in following cooperation with reference to one of schema
In the detailed description of preferred embodiment, can clearly it present.The direction term being previously mentioned in following embodiment, such as: upper,
Under, it is left and right, front or rear etc., be only the direction with reference to attached drawing.Therefore, the direction term used is for illustrating not to be used to limit
The utility model processed.
Fig. 1 is the functional block diagram according to the lighting system of an embodiment of the utility model.With reference to Fig. 1, lighting system
100 include controller (Controller) 110, temperature sensing module 120, light source drive 130, excitation light source 140 and light
Learn element 150.In the present embodiment, controller 110 is electrically connected temperature sensing module 120 and light source drive 130.Light source drives
Dynamic device 130 is electrically connected excitation light source 140, and for driving excitation light source 140.Excitation light source 140 is for issuing excitation beam
EB, and optical element 150 is located on the transmission path of excitation beam EB.In the present embodiment, light source drive 130 may include
Laser diode driving circuit, and excitation light source 140 may include the laser diode of multiple arrays arrangement, but the utility model
It is not limited to this.In the present embodiment, optical element 150 can be the element that light can be made to reflect or reflect, e.g. reflecting mirror
(mirror) either reflective Wavelength changing element etc..
In the present embodiment, temperature sensing module 120 is set to the adjacent domain of optical element 150, and for sensing
The temperature T of the adjacent domain of optical element 150, to export sensing voltage SV to controller 110.Controller 110 is for receiving sense
Voltage SV is surveyed, to judge whether sensing voltage SV falls within outside predetermined voltage range, and for exporting control signal CS to light source
Driver 130.In the present embodiment, light source drive 130 is adjusted according to control signal CS for driving excitation light source 140
Driving signal AS adjusts excitation beam EB with corresponding.
In the present embodiment, controller 110 may include microcontroller Microcontroller Unit, MCU), have letter
The central processing unit (Central Processing Unit, CPU) of number processing function or other programmable general use
Microprocessor (Microprocessor), digital signal processor (the Digital Signal of way or specific use
Processor, DSP), programmable controller, special application integrated circuit (Application Specific Integrated
Circuits, ASIC), programmable logic device (Programmable Logic Device, PLD), other similar processing unit
Or the combination of these devices.In the present embodiment, controller 110 can analyze the sensing voltage provided by temperature sensing module 120
SV corresponds to the excitation beam EB of the adjustment output of excitation light source 140 with the voltage change result according to sensing voltage SV.
In the present embodiment, temperature sensing module 120 may include circuit board and temperature-sensitive sticker.The circuit board can be set
It is placed in the adjacent domain of optical element 150, and temperature-sensitive sticker may be provided on the circuit board, wherein the adjacent domain
It can be rear or the surrounding of optical element 150.In the present embodiment, the circuit board may include can be thermally conductive metal material layer.
Specifically, the excitation beam EB for being transferred to optical element 150 may be because optics when optical element 150 ruptures or damages
The rupture or damage of element 150, and optics member is penetrated, reflects or scattered to via the breakage or rent of optical element 150
The rear of part 150 or surrounding.Therefore, when the board receiver for the adjacent domain that optical element 150 is arranged in warp
When the excitation beam EB for being penetrated, reflecting or being scattered by the breakage or rent of optical element 150, the temperature-sensitive sticker can
The temperature for effectively sensing the metal material layer that can be thermally conductive of the circuit board rises situation.
In the present embodiment, the temperature-sensitive sticker can further comprise thermistor (Thermistor) or Temperature protection
Silk.By taking thermistor as an example, the thermistor can correspond to output sensing voltage SV to control according to the temperature T of the circuit board
Device 110 processed.In the present embodiment, the thermistor can be positive temperature coefficient (Positive Temperature
Coefficient, PTC) thermistor or negative temperature coefficient (Negative Temperature Coefficient, NTC) heat
Quick resistance.For example, the thermistor can be connected electrically between power supply (Power) and controller 110.Work as lighting system
100 when opening, and the power supply can provide fixed voltage signal to the thermistor, then be provided to via the thermistor
Controller 110 (as sensing voltage SV).However, if rupture or damage, the temperature of the circuit board occur for optical element 150
T rises, and the resistance value of the thermistor is made to change.Therefore, the voltage signal for flowing through the thermistor will
It can make to control because the cross-pressure caused by the resistance value of the thermistor changes correspondingly increases or decreases
The voltage signal that device 110 receives similarly changes.That is, controller 110 can be according to via the temperature-sensitive
Whether the voltage signal that resistance provides falls within outside predetermined voltage range, effectively to judge whether optical element 150 occurs
The case where rupturing or damage, and leading to light leakage.
Still further, if the thermistor be posive temperature coefficient thermistor, when the board receiver extremely
When at least part of excitation light source EB, the resistance value of the thermistor will rise with temperature T, and via the temperature-sensitive
Resistance, which is exported to the sensing voltage SV of controller 110, to be declined.That is, the controller 110 of the present embodiment can be according to sense
Survey whether voltage SV is lower than predetermined voltage range to correspond to control light source drive 130, to downgrade the output work of excitation light source 140
Rate, or close excitation light source 140.If the thermistor be negative tempperature coefficient thermistor, when the board receiver extremely
When at least part of excitation light source EB, the resistance value of the thermistor declines with temperature T, and via the temperature-sensitive electricity
The sensing voltage SV of resistance output to controller 110 will rise.That is, the controller 110 of the present embodiment can be according to sensing
Whether voltage SV is higher than predetermined voltage range to correspond to control light source drive 130, to downgrade the output work of excitation light source 140
Rate, or close excitation light source 140.
In addition, above-mentioned temperature-sensitive sticker can also further comprise Thermal Cutoffs, wherein the Thermal Cutoffs can be set
It sets on the circuit board.When rupture or damage occur for optical element 150, so that the board receiver is at least part of sharp
When light emitting source EB, if flow through the Thermal Cutoffs voltage or electric current it is excessive so that the metal in the Thermal Cutoffs
Line fusing or disconnect, and make sensing voltage SV be zeroed, then controller 110 can according to sensing voltage SV variation it is sharp directly to close
Light emitting source 140, to provide instant protection effect.
Fig. 2 is the schematic diagram according to the projection arrangement of an embodiment of the utility model.With reference to Fig. 2, projection arrangement 200 is wrapped
It is uniform to include temperature sensing module 220, excitation light source 240, Wavelength changing element 250, beam splitter 261, filter element 262, light
Element 263, light valve 270 and projection lens 280.In the present embodiment, excitation light source 240 extremely divides for providing excitation beam EB
Optical element 261, and excitation beam EB is transmitted through Wavelength changing element 250 via beam splitter 261.In the present embodiment, divide
Optical element 261 can be spectroscope (Beam Splitter, BS).Filter element 262 can be colour wheel (Filter Wheel).Light is equal
Even element 263 can be integration rod (Integrator Rod).Wavelength changing element 250 can be for example reflective fluorescent wheel
(Phosphor Wheel).Light valve 270 can be digital micromirror elements (digital micro-mirror device, DMD), silicon
Base fluid crystal panel (liquid-crystal-on-silicon panel, LCOS panel), penetration liquid crystal display panel or other light
Beam modulator etc..
In the present embodiment, Wavelength changing element 250 is used to a part of excitation beam EB being converted to commutating optical beam CB,
And another part of reflected excitation light beam EB.Commutating optical beam CB and the excitation beam EB ' reflected are passed to optical filtering again
Element 262 and light equalization element 263.Filter element 262 and light equalization element 263 are for making commutating optical beam CB and excitation
Light beam EB ' sequentially forms illuminating bundle LB, and illuminating bundle LB is provided to light valve 270.Light valve 270 is for making illuminating bundle
LB forms image strip IB, and image strip IB is provided to projection lens 280.Projection lens 280 is for making image strip
IB forms projected light beam PB.
In the present embodiment, projection arrangement 200 may also include controller (not shown) and light source drive (not shown),
Wherein the relevant technologies feature of the controller of the present embodiment and light source drive can refer to such as above-mentioned Fig. 1 embodiment.Namely
It says, the projection arrangement 200 of the present embodiment can arrange in pairs or groups with reference to other circuit elements of the lighting system 100 of Fig. 1 embodiment
Implement.In the present embodiment, the optical element 150 of Fig. 1 can be Wavelength changing element 250, and temperature sensing module 220 may be provided at
The adjacent domain of Wavelength changing element 250, and temperature sensing module 220 can electric connection of power supply, with receive power supply offer consolidate
Determining voltage signal, and temperature sensing module 220 accordingly provides sensing voltage according to the fixed voltage signal to control
Device.That is, the projection arrangement 200 of the present embodiment can be by the temperature for the adjacent domain that Wavelength changing element 250 is arranged in
Whether sensing module 220 is ruptured or is damaged effectively monitoring Wavelength changing element 250.
Specifically, whether rupturing or damaging to effectively monitor Wavelength changing element 250, therefore temperature sensing module
220 may be provided at the adjacent domain of the rear of Wavelength changing element 250 or surrounding, such as Wavelength changing element illustrated by Fig. 2
250 rear, but the utility model is not limited to shown in Fig. 2.In the present embodiment, temperature sensing module 220 can be for example including
Circuit board and temperature-sensitive sticker, and the circuit board may include can be thermally conductive metal material layer.That is, when projection dress
When setting 200 and starting operation, if rupture or damage occur for Wavelength changing element 250, it is transferred to the excitation of Wavelength changing element 250
Light beam EB may be because the rupture or damage of Wavelength changing element 250, and via the breakage or rupture of Wavelength changing element 250
Place penetrates, reflects or scatters to rear or the surrounding of Wavelength changing element 250.
In this regard, the metal that can be thermally conductive of the temperature sensing module 220 when the adjacent domain that Wavelength changing element 250 is arranged in
Material layer receives the excitation beam EB for penetrating, reflecting or scattering via the breakage or rent of Wavelength changing element 250
When, the temperature of the metal material layer that can be thermally conductive of temperature sensing module 220 will be with the breakage via Wavelength changing element 250
Or the rent irradiation of excitation beam EB that penetrates, reflect or scatter and temperature occurs and rises situation, and temperature sensing mould
The sensing voltage that block 220 exports will accordingly change.Therefore, the controller of the present embodiment can be by judging sensing electricity
Whether pressure changes to fall within outside predetermined voltage range, to decide whether to downgrade the output power of excitation light source 240, or closes
Excitation light source 240.
In addition, other circuit component characterizations, technical detail or embodiment about the present embodiment, can refer to above-mentioned Fig. 1
The explanation of embodiment and obtain enough teachings, suggest and implement explanation, therefore repeat no more.
Fig. 3 is the schematic diagram according to the projection arrangement of another embodiment of the utility model.With reference to Fig. 3, projection arrangement 300
Including multiple temperature sensing modules 321~323, excitation light source 340, multiple reflecting mirrors 351~353, beam splitter 361, filter
Element 362, light equalization element 363, light valve 370, projection lens 380 and Wavelength changing element 390.In the present embodiment, swash
Light emitting source 340 is for providing excitation beam EB to beam splitter 361, and excitation beam EB is transmitted through via beam splitter 361
Wavelength changing element 390.In the present embodiment, beam splitter 361 can be spectroscope.Filter element 362 can be colour wheel.Light is uniform
Element 363 can be integration rod.Light valve 370 can be digital micromirror elements, silica-based liquid crystal panel, penetration liquid crystal display panel or other light
Beam modulator etc..Wavelength changing element 390 can be for example the fluorescent wheel of penetration.
In the present embodiment, Wavelength changing element 390 is used to a part of excitation beam EB being converted to commutating optical beam CB,
To reflex to beam splitter 361.Commutating optical beam CB reflexes to filter element 362 and light equalization element via beam splitter 361
363.Wavelength changing element 390 can be such that another part of excitation beam EB transmits, the excitation transmitted via Wavelength changing element 390
Light beam EB ' is simultaneously passed to multiple reflecting mirrors 351~353.Excitation beam EB ' is reflexed to via these reflecting mirrors 351~353
Beam splitter 361.Excitation beam EB ' is transmitted through filter element 362 and light equalization element 363 via beam splitter 361.It filters
Element 362 and light equalization element 363 can make commutating optical beam CB and excitation beam EB ' sequentially forms illuminating bundle LB, and
Illuminating bundle LB is provided to light valve 370.Light valve 370 is for making illuminating bundle LB form image strip IB, and by image light
Beam IB is provided to projection lens 380.Projection lens 380 is for making image strip IB form projected light beam PB.
In the present embodiment, projection arrangement 300 may also include controller (not shown) and light source drive (not shown),
Wherein the relevant technologies feature of the controller of the present embodiment and light source drive can refer to such as above-mentioned Fig. 1 embodiment.Namely
It says, the projection arrangement 300 of the present embodiment can refer to other circuit elements of the lighting system 100 of Fig. 1 embodiment to arrange in pairs or groups and implement.
In the present embodiment, the optical element 150 of Fig. 1 can be reflecting mirror 351~353, these temperature sensing modules 321~323 can divide
The adjacent domain of these reflecting mirrors 351~353 is not set, and these temperature sensing modules 321~323 can be it is concatenated
Mode is electrically connected to power supply, or is respectively electrically connected to power supply.If with the series connection of these temperature sensing modules 321~323 and being electrically connected
It is connected to for power supply, can sequentially flow through via the fixed voltage signal that power supply provides to these temperature sensing modules 321~323,
So that these temperature sensing modules 321~323 accordingly provide a sensing voltage according to the fixed voltage signal to control
Device processed.If by taking these temperature sensing modules 321~323 are respectively electrically connected to power supply as an example, via multiple fixations of power supply offer
Voltage signal can be flowed separately through to these temperature sensing modules 321~323, so that these 321~323 foundations of temperature sensing module
The multiple fixed voltage signal accordingly provides multiple sensing voltages to controller.That is, the projection of the present embodiment
Device 300 can have by these temperature sensing modules 321~323 for the adjacent domain that these reflecting mirrors 351~353 are arranged in
Effect ground monitors whether these reflecting mirrors 351~353 rupture or damage.
Specifically, whether rupturing or damaging to effectively monitor these reflecting mirrors 351~353, therefore these temperature senses
Surveying module 321~323 may be provided at the rear of these reflecting mirrors 351~353 or the adjacent domain of surrounding, such as illustrated in Fig. 3
These reflecting mirrors 351~353 rear, but the utility model is not limited to shown in Fig. 3.In the present embodiment, these temperature
Sensing module 321~323 may include circuit board and temperature-sensitive sticker, and the circuit board may include can be thermally conductive metal material
The bed of material.That is, when projection arrangement 300 starts operation, if at least one generation of these reflecting mirrors 351~353
Rupture or damage, then the excitation beam EB ' for being transferred to the reflecting mirror of generation rupture or damage may be via breakage or rent
Penetrate, reflect or scatter to the rear that the reflecting mirror of rupture or damage occurs or surrounding.
In this regard, when these temperature for at least one of adjacent domain that these reflecting mirrors 351~353 are arranged in
Sensing module 321~323 it is corresponding it is at least one of can thermally conductive metal material layer receive via these reflecting mirrors
When the excitation beam EB ' that 351~353 at least one of breakage or rent is penetrated, reflects or scattered, this
The temperature of the corresponding at least one of metal material layer that can be thermally conductive of a little temperature sensing modules 321~323 will be with
Via at least one of breakage or rent of these reflecting mirrors 351~353 penetrate, reflect or scatter
The irradiation of excitation beam EB ' and occur temperature rise situation.And these temperature sensing modules 321~323 is corresponding described
The sensing voltage of at least one output will change.Therefore, the controller of the present embodiment can be by judging the sensing
Whether voltage changes to fall within outside predetermined voltage range, to decide whether to downgrade the output power of excitation light source 340, or closes
Close excitation light source 340.
In addition, other circuit component characterizations, technical detail or embodiment about the present embodiment, can refer to above-mentioned Fig. 1
The explanation of embodiment and obtain enough teachings, suggest and implement explanation, therefore repeat no more.
Fig. 4 is the flow chart according to the illumination control method of an embodiment of the utility model.With reference to Fig. 1 and Fig. 4, originally
The illumination control method of embodiment can at least be applicable in the lighting system 100 of Fig. 1 embodiment.Lighting system 100 includes controller
110, temperature sensing module 120, light source drive 130, excitation light source 140 and optical element 150.Lighting system 100 can be held
Row step S410~S430.Firstly, when lighting system 100 is opened, since temperature sensing module 120 is configured in optical element
150 adjacent domain, therefore in step S410, temperature sensing module 120 senses the temperature of the adjacent domain of optical element 150
T, to export sensing voltage SV to controller 110.Then, in the step s 420, when controller 110 receives temperature sensing module
120 provide sensing voltage SV when, controller 110 can determine whether sensing voltage SV falls within outside predetermined voltage range, using as
Judge the foundation whether optical element 150 ruptures or damage.If it is not, also that is, when to judge that sensing voltage SV is fallen within pre- for controller 110
If when in voltage range, then returning to step S410, temperature sensing module 120 continues sensing temperature and output voltage.If so, also
That is, then carrying out step S430 when controller 110 judges that sensing voltage SV is fallen within outside predetermined voltage range, controller 110 can be defeated
Control signal CS is to light source drive 130 out, to adjust excitation beam EB.In other words, when rupture or damage occur for optical element 150
Bad situation, the illumination control method of the present embodiment can immediately downgrade the output power of excitation light source 140, or close exciting light
Source 140.
In addition, other circuit component characterizations, technical detail or embodiment about the present embodiment, can refer to above-mentioned Fig. 1
To Fig. 3 embodiment explanation and obtain enough teachings, suggest and implement explanation, therefore repeat no more.
In conclusion the embodiments of the present invention at least have effects that following one of advantage or.It is practical new at this
In the embodiment of type, the settable temperature sensing module of internal optical component adjacent domain of lighting system and projection arrangement, with
When user operates lighting system and when projection arrangement, lighting system and projection arrangement can immediately monitor sharp for transmitting
Whether there is a situation where rupture or damage for the optical element of luminous beam.Also, when the optical element hair for being used to transmit excitation beam
When the case where raw rupture or damage, lighting system and projection arrangement can immediately downgrade output power or the closing of excitation light source
Excitation light source.In this way, the lighting system and projection arrangement of the utility model can provide safe projecting function.Also, this reality
It, can swashing of being transmitted in above-mentioned lighting system and projection arrangement of at-once monitor with the illumination control method of novel embodiment
Whether luminous beam transmits in unexpected optical path, effectively to judge in above-mentioned lighting system and projection arrangement for passing
Whether the optical element for passing excitation beam ruptures or damages, and automatically downgrades the output power of excitation light source or close exciting light
Source.In this way, the illumination control method of the utility model can provide safe light controlling effects.
Only as described above, the only preferred embodiment of the utility model, when the utility model cannot be limited with this
The range of implementation, i.e., all simple equivalence changes made according to the utility model claims book and utility model content with repair
Change, all still belongs in the range that the utility model patent covers.In addition any embodiment or claim of the utility model are not necessary to
Reach the disclosed whole purpose of the utility model or advantage or feature.In addition, abstract and utility model title be intended merely to it is auxiliary
It helps patent document retrieval to be used, not is used to limit the interest field of the utility model.In addition, in this specification or claim
The terms such as " first " that refers to, " second " only to name the title or the different embodiments of difference or range of element (element),
And not it is used to the quantitative upper limit of restriction element or lower limit.
Description of symbols:
100: lighting system
110: controller
120,220,321,322,323: temperature sensing module
130: light source drive
140,240,340: excitation light source
150: optical element
200,300: projection arrangement
250,390: Wavelength changing element
261,361: beam splitter
262,362: filter element
263,363: light equalization element
270,370: light valve
280,380: projection lens
351,352,353: reflecting mirror
AS: driving signal
CS: control signal
CB: commutating optical beam
EB, EB ': excitation beam
IB: image strip
LB: illuminating bundle
PB: projected light beam
SV: sensing voltage
S410, S420, S430: step T: temperature.
Claims (16)
1. a kind of lighting system, which is characterized in that including excitation light source, optical element, light source drive, temperature sensing module with
And controller, in which:
The excitation light source is for issuing excitation beam；
The optical element is located on the transmission path of the excitation beam；
The light source drive is electrically connected the excitation light source, and for driving the excitation light source；
The temperature sensing module is located at the adjacent domain of the optical element, and the neighbour for sensing the optical element
The temperature of near field, to export sensing voltage；And
The controller is electrically connected the light source drive and the temperature sensing module, for receiving the sensing voltage,
To judge whether the sensing voltage falls within outside predetermined voltage range, and for outputing control signals to the light source driving
Device, so that the light source drive adjusts the excitation beam.
2. the lighting system as described in claim the 1, which is characterized in that the temperature sensing module includes:
Circuit board, positioned at the adjacent domain of the optical element；And
Temperature-sensitive sticker is arranged on the circuit board, and the temperature for sensing the circuit board, to export the sensing electricity
Pressure,
Wherein when at least part of excitation light source of the board receiver, via the institute of temperature-sensitive sticker output
Sensing voltage is stated to change.
3. the lighting system as described in claim the 2, which is characterized in that the temperature-sensitive sticker includes thermistor, and
And the thermistor corresponds to the output sensing voltage according to the temperature of the circuit board to the controller.
4. the lighting system as described in claim the 3, which is characterized in that the thermistor be positive temperature coefficient thermal electricity
Resistance,
Wherein when at least part of excitation light source of the board receiver, export via the thermistor to described
The sensing voltage of controller declines.
5. the lighting system as described in claim the 3, which is characterized in that the thermistor is negative temperature coefficient thermistor power
Resistance,
Wherein when at least part of excitation light source of the board receiver, export via the thermistor to described
The sensing voltage of controller rises.
6. the lighting system as described in claim the 1, which is characterized in that the controller according to the sensing voltage whether
The external corresponding control light source drive of the predetermined voltage range is fallen within, to downgrade the output power of the excitation light source,
Or close the excitation light source.
7. the lighting system as described in claim the 1, which is characterized in that the optical element is Wavelength changing element, institute
It states Wavelength changing element and a part of the excitation beam is converted into commutating optical beam, and reflect the another of the excitation beam
Part.
8. the lighting system as described in claim the 1, which is characterized in that further include:
Wavelength changing element, on the transmission path of the excitation beam, for receiving described in the excitation light source sending
A part of the excitation beam is converted to commutating optical beam by excitation beam, the Wavelength changing element, and makes the excitation
Another part of light beam transmits,
Wherein the optical element is mirror elements, and mirror elements reflection is saturating via the Wavelength changing element
The described another part for the excitation beam penetrated.
9. a kind of projection arrangement, which is characterized in that including lighting system, light valve and projection lens, in which:
The lighting system is for providing illuminating bundle, and the lighting system includes excitation light source, optical element, light source driving
Device, temperature sensing module and controller, in which:
The excitation light source is for issuing excitation beam；
The optical element is located on the transmission path of the excitation beam；
The light source drive is electrically connected the excitation light source, and for driving the excitation light source；
The temperature sensing module is located at the adjacent domain of the optical element, and the neighbour for sensing the optical element
The temperature of near field, to export sensing voltage；And
The controller is electrically connected the light source drive and the temperature sensing module, for receiving the sensing voltage,
To judge whether the sensing voltage falls within outside predetermined voltage range, and for outputing control signals to the light source driving
Device, so that the light source drive adjusts the excitation beam；
The light valve is located on the transmission path of the illuminating bundle, and for the illuminating bundle to be converted into image light
Beam；And
The projection lens is located on the transmission path of the image strip, and for the image strip to be converted into projecting
Light beam.
10. the projection arrangement as described in claim the 9, which is characterized in that the temperature sensing module includes:
Circuit board, positioned at the adjacent domain of the optical element；And
Temperature-sensitive sticker is arranged on the circuit board, and the temperature for sensing the circuit board, to export the sensing electricity
Pressure,
Wherein when at least part of excitation light source of the board receiver, via the institute of temperature-sensitive sticker output
Sensing voltage is stated to change.
11. the projection arrangement as described in claim the 10, which is characterized in that the temperature-sensitive sticker includes thermistor,
And the thermistor corresponds to the output sensing voltage according to the temperature of the circuit board to the controller.
12. the projection arrangement as described in claim the 11, which is characterized in that the thermistor is positive temperature coefficient thermal
Resistance,
Wherein when at least part of excitation light source of the board receiver, export via the thermistor to described
The sensing voltage of controller declines.
13. the projection arrangement as described in claim the 11, which is characterized in that the thermistor is negative temperature coefficient heat-sensitive
Resistance,
Wherein when at least part of excitation light source of the board receiver, export via the thermistor to described
The sensing voltage of controller rises.
14. the projection arrangement as described in claim the 9, which is characterized in that the controller is according to the sensing voltage
It is no to fall within the external corresponding control light source drive of the predetermined voltage range, to downgrade the output work of the excitation light source
Rate, or close the excitation light source.
15. the projection arrangement as described in claim the 9, which is characterized in that the optical element is Wavelength changing element, institute
It states Wavelength changing element and a part of the excitation beam is converted into commutating optical beam, and reflect the another of the excitation beam
Part.
16. the projection arrangement as described in claim the 9, which is characterized in that the lighting system further include:
Wavelength changing element, on the transmission path of the excitation beam, for receiving described in the excitation light source sending
A part of the excitation beam is converted to commutating optical beam by excitation beam, the Wavelength changing element, and makes the excitation
Another part of light beam transmits,
Wherein the optical element is mirror elements, and mirror elements reflection is saturating via the Wavelength changing element
The described another part for the excitation beam penetrated.
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| CN201821472589.5U CN208752382U (en) | 2018-09-10 | 2018-09-10 | Lighting system and projection arrangement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888292A (en) * | 2018-09-10 | 2020-03-17 | 中强光电股份有限公司 | Illumination system, projection apparatus, and illumination control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888292A (en) * | 2018-09-10 | 2020-03-17 | 中强光电股份有限公司 | Illumination system, projection apparatus, and illumination control method |
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