CN105911808A - Laser light source and laser projection equipment - Google Patents
Laser light source and laser projection equipment Download PDFInfo
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- CN105911808A CN105911808A CN201610511521.2A CN201610511521A CN105911808A CN 105911808 A CN105911808 A CN 105911808A CN 201610511521 A CN201610511521 A CN 201610511521A CN 105911808 A CN105911808 A CN 105911808A
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- laser
- optical glass
- light source
- laser light
- light
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- 230000003287 optical effect Effects 0.000 claims abstract description 37
- 230000008859 change Effects 0.000 claims abstract description 21
- 239000005304 optical glass Substances 0.000 claims description 136
- 230000006698 induction Effects 0.000 claims description 102
- 230000005540 biological transmission Effects 0.000 claims description 27
- 230000033001 locomotion Effects 0.000 claims description 19
- 239000011521 glass Substances 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 6
- 238000013519 translation Methods 0.000 claims description 6
- 125000002015 acyclic group Chemical group 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 19
- 238000007493 shaping process Methods 0.000 description 13
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- 238000000034 method Methods 0.000 description 10
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/48—Laser speckle optics
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The invention discloses a laser light source and laser projection equipment, and provides the laser light source. The laser light source comprises an optical lens, wherein a light guide element is arranged at one side, from which a laser beam enters, of the optical lens; and the light guide element is driven to move, and guides the laser beam which needs to enter the optical lens to translate or the incident direction to change. By the laser light source and the laser projection equipment, the service lifetime of the optical lens in the laser light source can be prolonged.
Description
Technical field
The present invention relates to projection art, particularly relate to a kind of LASER Light Source and laser projection device.
Background technology
Laser is a kind of high brightness, and high directivity sends the light source of monochromatic coherent light bundle, LASER Light Source conduct
A kind of excellent coherent source, has monochromaticity good, high directivity, luminous flux advantages of higher, by increasingly
It is widely used in multiple technical field.
At projection art, LASER Light Source is widely used in projector equipment as projection light source.At present
LASER Light Source applied in projector equipment, it is common that with low power laser constitution laser array, carry
For the light of one or both colors in three primary colours, the light beam that in laser array, laser instrument sends is through beam shaping
After transmit in the optical path, and be incident to fluorescent wheel, excitated fluorescent powder produces the light of other colors in three primary colours
Mode is illuminated.
And along with the lifting demand of projected image brightness, the power of LASER Light Source is the most increasing, laser beam
High energy characteristic need the optical glass in light path high temperature resistant, indeformable, and optical characteristics is stable, but real
In the application of border, the heat effect of laser beam is to the transmitance of optical glass and will result in service life negative
Impact, owing to long-time local receives the irradiation of high density light energy, the surface of optical glass can deform,
Regional area optical characteristics can aggravate deterioration, and the region of some plated film there will be aging, and then causes optical processing
Efficiency drastically declines, and the minimizing in the service life of optical glass.Fig. 1 shows that some optical glasss exist
The schematic diagram of the Spectrum attenuation curve before and after aging, it can be seen that light eyeglass transmitance (figure after weathering
Curve b) shown in 1 is intended to less than transmitance (the curve a) shown in Fig. 1 before ageing.
Therefore, how to improve the service life of optical glass in LASER Light Source, be that industry urgently studies reconciliation
Problem certainly.
Summary of the invention
The embodiment of the present invention provides a kind of LASER Light Source and laser projection device, in order to improve light in LASER Light Source
Learn the service life of eyeglass.
The LASER Light Source that one embodiment of the present of invention provides, including optical glass, swashing of described optical glass
The side that light light beam is incident, is provided with light induction element；
Described smooth induction element is driven to move, and guides and needs to incide the laser beam of described optical glass
Translation or incident direction is occurred to change.
Alternatively, described smooth induction element is driven is carried out periodically or acyclic motion.
Alternatively, described smooth induction element is driven to be rotated along rotary shaft, and described rotary shaft is drawn with described light
The plane of guiding element is parallel.
Alternatively, described smooth induction element is reflecting element, or transmissive element.
Alternatively, described reflecting element is plane mirror or is MEMS galvanometer.
Alternatively, described transmissive element is plain film glass.
Alternatively, the thickness of described plain film glass is uniform.
Alternatively, the incident laser beam of described photo-conduction cell is parallel laser light beam.
Alternatively, the outgoing laser beams of described photo-conduction cell is parallel laser light beam.
Alternatively, described LASER Light Source also includes mono-colour laser array；Described mono-colour laser array is sent out
The first optical glass and the second optical glass is included in the transmission light path of the laser gone out；
Between described mono-colour laser array and described first optical glass, and/or at described first optical frames
Between sheet and described second optical glass, it is provided with light induction element.
Alternatively, described LASER Light Source also includes the first laser array, second laser array；Described
The first optical glass and the second optical frames is included in the transmission light path of the laser that the first laser array sends
Sheet；The 3rd optical glass and the 4th is included in the transmission light path of the laser that described second laser array sends
Optical glass；
One in following position or combination, be provided with light induction element:
Between described first laser array and described first optical glass, described first optical glass and described
Between second optical glass, between described second laser array and described 3rd optical glass, the described 3rd
Between optical glass and described 4th optical glass.
The laser projection device that one embodiment of the present of invention provides, including: ray machine, camera lens and such as this
Invent the LASER Light Source that any of the above-described embodiment is provided:
Described LASER Light Source provides illumination for described ray machine, and light beam of light source is modulated by described ray machine, and defeated
Go out and carry out imaging to described camera lens, be projected to project medium and form projected picture.
In the LASER Light Source that the embodiment of the present invention provides, in the side that the laser beam of optical glass is incident, if
It is equipped with light induction element, moves by light induction element is driven such that it is able to guide and need to incide light
The laser beam learning eyeglass occurs translation or incident direction to change, and then laser beam is irradiated to
Diverse location on optical glass, the diverse location at optical glass forms hot spot.It will be seen that the present invention
The LASER Light Source that embodiment provides, by arranging light induction element and the motion of light induction element, it is possible to make
The position that is irradiated on optical glass of laser beam changes, thus the laser beam avoiding high energy is long
Phase is irradiated to the same position on optical glass, and then reduces the degree of indicative of local optical properties deterioration, it is possible to
Reach to improve the effect in optical glass service life.Correspondingly, the laser projection that the embodiment of the present invention provides sets
LASER Light Source that is standby, that provided by the application embodiment of the present invention, it is possible to correspondingly improve the service life of equipment,
Strengthen the competitiveness of product.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, institute in embodiment being described below
The accompanying drawing used is needed to briefly introduce, it should be apparent that, the accompanying drawing in describing below is only the present invention's
Some embodiments, from the point of view of those of ordinary skill in the art, in the premise not paying creative work
Under, it is also possible to other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 be optical glass aging before and after the schematic diagram of Spectrum attenuation curve；
Fig. 2 is the schematic diagram of laser beam shaping light path in LASER Light Source；
Fig. 3 is the structural representation of LASER Light Source based on double-colored light source framework；
The structural representation of the LASER Light Source that Fig. 4 provides for one embodiment of the present of invention；
The structural representation of the LASER Light Source that Fig. 5 provides for one embodiment of the present of invention；
The light induction element motion schematic diagram that (a) in Fig. 6 provides for one embodiment of the present of invention；
The light induction element motion schematic diagram that (b) in Fig. 6 provides for one embodiment of the present of invention；
The light induction element motion schematic diagram that (c) in Fig. 6 provides for one embodiment of the present of invention；
The structural representation of the LASER Light Source that Fig. 7 provides for one embodiment of the present of invention；
The structural representation of the LASER Light Source that Fig. 8 provides for one embodiment of the present of invention；
Fig. 9 shows for the structure of the LASER Light Source based on double-colored light source framework that one embodiment of the present of invention provides
It is intended to；
The structural representation of the laser projection device that Figure 10 provides for one embodiment of the present of invention.
Detailed description of the invention
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to this
Bright it is described in further detail, it is clear that described embodiment is only some embodiments of the present invention,
Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out all other embodiments obtained under creative work premise, broadly fall into the scope of protection of the invention.
In LASER Light Source, often there are a fairly large number of optical glass, typically can include the most convex
Lens, concavees lens, bloomed lens, receive the optical glasss such as optical lens group.The light beam that laser instrument sends is in light path
In each eyeglass in transmit, be refracted or transmission, carry out optical treatment.
Fig. 2 shows the light path schematic diagram of laser beam shaping in a kind of LASER Light Source.
As in figure 2 it is shown, the light source of laser array (or referred to as laser array) 201 composition laser, send
Laser beam, laser beam is incident to convex lens 202 with directional light light beam, arrives concavees lens 203 through assembling,
Light beam in the trend of convergence is dissipated by concavees lens, again forms collimated light beam.It will be seen that through excess convexity
After lens 202 and concavees lens 203, laser beam is compressed, and defines the laser beam that beam area is less.
Fig. 3 shows the structural representation of a LASER Light Source example based on double-colored light source framework.
Swash as it is shown on figure 3, laser array 301 provides blue laser, laser array 302 to provide red
Light, blue laser arrives dichroic mirror 304 through convex lens 303, then is transmitted through poly-through dichroic mirror 304
Focus lens 305, red laser arrives dichroic mirror 304 after convex lens 306 and reflecting mirror 307,
Condenser lens 305, blue laser and red laser is reflexed to through condenser lens 305 again through dichroic mirror 304
With diffusion sheet 308, it is incident to transmission-type fluorescent wheel 309 (including transparent substrates and phosphor powder layer), fluorescence
Being provided with blue light transmission area and fluorescent material district on wheel 307, fluorescent material at least includes green emitting phosphor, it is possible to be subject to
Swash and produce green fluorescence, thus and blue laser, red laser forms three primary colours.Green fluorescence swashs with blueness
Light, red laser are according to sequential, from fluorescent wheel 309 back side transmission, after receiving optical lens group 310, warp
Cross same set of light path (than reflecting mirror 311 as shown in Figure 3 and condenser lens 312) to transmit to optical wand 313,
Carry out even light, it is provided that illuminating bundle.
It will be seen that in LASER Light Source, the light beam that laser array sends is shape after light beam contracting bundle shaping
Become less hot spot to transmit in the optical path, be generally and obtained optimal light treatment effeciency, generally hot spot is directed at
Optical glass center incident, optical glass center light treatment effeciency is the highest, such as convex lens, and edge holds
Easily occurring the deformation of light refraction, centre and the neighbouring converging action to light the strongest, light loss is the least.
But, due to the accuracy of light path design, typically each optical glass no longer changes after light path is adjusted
Displacement is put, and in use, the position that on optical glass, long-term receipt superlaser irradiates is it would appear that rise
Mist phenomenon, shows as long-term irradiated position on eyeglass and gets confused, and white speckle etc. occurs.And along with photograph
Penetrating the growth of time, atomisation area will gradually expand, and transmitance then can be gradually reduced, former when meeting
During reliability requirement in the design, then need to change element.Lifting especially with projected image brightness
Demand, the power of LASER Light Source is the most increasing, exacerbates the surface of optical glass especially due to long-time office
Portion receives the deformation irradiating generation of high density light energy, drastically declines in optical processing efficiency and service life.
Normally, can be reduced to by the transmitance of this sheet optical glass the service life of a piece of optical glass
Raw value 50% time before the hourage that used weigh；Or it is bright by this sheet optical glass rear end
The hourage used before when degree is reduced to the 50% of raw value is weighed.
It is directed in LASER Light Source, the district that on optical glass, long-term receipt high-energy-density light energy laser irradiates
Territory, optical characteristics constantly deteriorates, and light transmissioning efficiency reduces, the problem of optical glass reduction in service life, existing
Have in technology and do not have good solution.
In order to overcome the drawbacks described above in existing LASER Light Source, improve the use longevity of optical glass in LASER Light Source
Life, the embodiment of the present invention proposes a kind of LASER Light Source and laser projection device.The embodiment of the present invention is provided
In technical scheme, for accepting the optical glass that laser beam irradiates, in the side that its laser beam is incident,
It is provided with light induction element, makes to need to incide swashing of described optical glass by the motion of light induction element
Light light beam occurs translation or incident direction to change, so that laser beam is radiated on optical glass
Position can be continually changing, it is to avoid the same position in the laser beam long-term irradiation of high energy to optical glass
Put, reduce the degree of indicative of local optical properties deterioration, reached on the whole to improve optical glass service life
Effect.
Specifically, the LASER Light Source that some embodiments of the present invention are provided includes optical glass, this light
Learn the side that the laser beam of eyeglass is incident, be provided with light induction element.
Further, light induction element is driven moves for this, thus guides and need to incide described optical frames
The laser beam of sheet occurs translation or incident direction to change.
Alternatively, light induction element can be specifically reflecting element, or can be transmissive element.
Closely related with the optical characteristics of the optical element used owing to transmitting the light path of laser, therefore, for
The technical scheme that the clearer description embodiment of the present invention is provided, will use with some of the present invention below
Transmissive element draws as light as the embodiment of light induction element and some employing reflecting elements of the present invention
The embodiment of guiding element is example, is described in detail the embodiment of the present invention respectively in connection with accompanying drawing.
It should be appreciated that the technical scheme that the embodiment of the present invention is provided does not limits the class of light induction element
Type.Alternatively, in some embodiments of the invention, light induction element can be not change laser beam
The optical element of optical energy density.It is to be further understood that technical scheme that the embodiment of the present invention provided is also
Do not limit the type of optical glass.Alternatively, in the LASER Light Source that some embodiments of the present invention provide,
For such as convex lens, or dichroic mirror, or other can allow the optical glass of light beam transmission, all
Can receive, at it, the side that laser beam is incident, be provided with light induction element.The type of light induction element with
And concrete position (it can be appreciated that light induction element corresponding optical glass) is set specifically can foundation
The technical scheme that the embodiment of the present invention is provided in actual scene should be for determining.
Fig. 4 shows and uses transmissive element to draw as light in the LASER Light Source that some embodiments of the present invention provide
The schematic diagram of guiding element.Wherein, in example as shown in Figure 4, optical glass 401 is specially convex lens.
In light path as shown in Figure 4, the side that the laser beam of optical glass 401 is incident, it is provided with light and draws
Guiding element 402 (transmissive element), light induction element 402 is driven carries out move (rotation as shown in Figure 4).
As shown in Figure 4, laser beam incides on light induction element 402, saturating through light induction element 402
After penetrating (outgoing laser beams that in Fig. 4, solid line represents), at position A after being irradiated on optical glass 401
Place forms hot spot；Light induction element 402 is driven rotate after (setting rotational angle α), light guiding element
Part 402 is relative to laser beam incident direction run-off the straight, and laser beam incides light induction element 402 table
Incident angle on face changes accordingly, owing to light induction element 402 has certain thickness, according to refraction
Law, laser beam reflects in light induction element 402 internal transmission, again reflects from another surface
Penetrating (outgoing laser beams that in Fig. 4, dotted line represents), the direction of outgoing laser beams will guide relative to light
There is parallel displacement in the direction of the outgoing laser beams before element 402 rotation, i.e. incides optical glass
The laser beam of 401 will translate, and will form hot spot after being irradiated on optical glass 401 at the B of position.
It will be seen that the motion of light induction element 402 (transmissive element) will enable to obtain laser beam incidence
Incident angle on light induction element 402 surface changes such that it is able to make through light induction element
Outgoing laser beams (i.e. inciding the laser beam of optical glass 401) after 402 (transmissive element) transmission
Translate, and then hot spot can be formed at diverse location after being irradiated on optical glass.
Alternatively, in some employing transmissive element embodiments as light induction element of the present invention, transmission
The driven angle rotatable scope carrying out rotating of element can be positive 5 degree to negative 5 degree.
Alternatively, in some employing transmissive element embodiments as light induction element of the present invention, transmission
The smooth surface of element.
Alternatively, in some employing transmissive element embodiments as light induction element of the present invention, transmission
Element can be specifically plain film glass.
Alternatively, some of the present invention use in the transmissive element embodiment as light induction element, transmission unit
The transparent material in uniform thickness of the same race of part is formed, plain film glass the most in uniform thickness etc..
Wherein, the blocked up light loss that will increase of plain film glass, relatively thin, the change that can make facula position is inconspicuous.
Alternatively, the span of the thickness of plain film glass is between 3 millimeters to 5 millimeters.
Fig. 5 shows and uses reflecting element to draw as light in the LASER Light Source that some embodiments of the present invention provide
The schematic diagram of guiding element.Wherein, in example as shown in Figure 5, optical glass 501 is specially convex lens.
In light path as shown in Figure 5, the side that the laser beam of optical glass 501 is incident, it is provided with light and draws
Guiding element 502 (reflecting element), light induction element 502 is driven carries out move (rotation as shown in Figure 5).
As it is shown in figure 5, laser beam incides on light induction element 502, anti-through light induction element 502
After penetrating (outgoing laser beams that in Fig. 5, solid line represents), at position C after being irradiated on optical glass 501
Place forms hot spot；Light induction element 502 is driven rotate after (setting rotational angle β), laser beam
The incident angle being irradiated on light induction element 502 surface also occurs to change accordingly, according to reflection law,
The outgoing laser beams that will cause laser beam after light induction element 502 reflects that changes of incident angle (is schemed
The outgoing laser beams that in 5, dotted line represents) exit direction relative to light induction element 502 rotate before going out
The direction penetrating laser beam changes, and the incident direction of the laser beam i.e. inciding optical glass 501 will
Change, hot spot after being irradiated on optical glass 401, will be formed at the D of position.
It will be seen that the motion of light induction element 502 (reflecting element) enables to laser beam and incides
Incident angle on light induction element 502 surface changes such that it is able to make through light induction element
The exit direction of the outgoing laser beams after 502 (reflecting element) reflection (i.e. incides optical glass 401
The incident direction of laser beam) change, and then can be at not coordination after being irradiated on optical glass
Put formation hot spot.
Alternatively, in some employing reflecting element embodiments as light induction element of the present invention, reflection
The driven angle rotatable carrying out rotating of element is typically small, and specifically angle rotatable scope can be positive N
Degree is to negative N degree, and wherein, the span of N is 0.3 to 0.5, in the range of the most positive and negative 0.3～0.5 degree.
Alternatively, in some employing reflecting element embodiments as light induction element of the present invention, reflection
Element receives the smooth surface of laser beam light incident side.
Alternatively, in some employing reflecting element embodiments as light induction element of the present invention, reflection
Element can be specifically plane mirror or can be piezoelectric ceramics MEMS (MEMS,
Micro-Electro-Mechanical System) galvanometer.
Alternatively, in some employing plane mirror embodiments as light induction element of the present invention, flat
Face reflecting mirror driven can carry out periodic rotary, and specifically, the rotational frequency of plane mirror can be with value
Between 300 hertz to 500 hertz.
Alternatively, use piezoelectric ceramics MEMS galvanometers as the reality of light induction element in some of the present invention
Executing in example, piezoelectric ceramics MEMS galvanometer driven can carry out periodic rotary, specifically, piezoelectric ceramics
The rotational frequency of MEMS galvanometer can reach a few KHz to tens (ten thousand) hertz, i.e. can exist with value
Between thousand grades of hertz to ten thousand grades hertz.
Carried it should be appreciated that Fig. 4 and Fig. 5 only symbolically illustrates some embodiments of the present invention
Optical glass, light induction element and the example of its light path formed, the present invention in the LASER Light Source of confession
The LASER Light Source that embodiment is provided specifically can also include laser array, fluorescent wheel, and convex lens,
Multiple optical glasss such as concavees lens, bloomed lens, receipts optical lens group.It should also be noted that the present invention is real
The concrete light path design executing the LASER Light Source that example is provided can be with the design phase of LASER Light Source in prior art
With or different, concrete light path design that the application does not limit LASER Light Source and the optical element used.
In some specific embodiments of the present invention, light induction element can be to carry out under the driving driving element
Motion.Wherein, driving element can be as the part in light induction element, it is also possible to as individually unit
Part is connected with light induction element.Such as, driving element can be solenoid or piezoelectric ceramics, passes through
One clamp structure (such as carriage framework etc.), is connected with light induction element.
Further, drive element can be controlled by controlling element, the most such as control element to driving
Element carries out signal control, drives electric current (such as PWM ripple) accordingly, along with driving according to signal output
The change of electric current, drives light induction element correspondingly to move, and the most such as controls element soft according to arrange
Part program, controls to drive element drives light induction element to move accordingly.
Alternatively, controlling element can be CUP controller, to driving element output control signal.
Alternatively, in some embodiments of the present invention, light induction element can be driven along rotary shaft carry out turn
Dynamic, wherein, rotary shaft can be parallel with the plane of light induction element.
Specifically, the light induction element shown by (a), (b), (c) in such as Fig. 6 driven enter
The schematic diagram of row motion.
(a) in Fig. 6 shows in some embodiments of the invention, and light induction element can be specifically
Driven rotating along the first rotary shaft a, wherein, the first rotary shaft a is parallel with the plane of light induction element；
(b) in Fig. 6 shows in the other embodiment of the present invention, and light induction element can be specifically to be subject to
Driving and rotate along the second rotary shaft b, wherein, the second rotary shaft b is parallel with the plane of light induction element.
(c) in Fig. 6 shows that, in the other embodiment of the present invention, light induction element is the most permissible
It it is the most driven motion carried out as shown by (b) in (a) in Fig. 6 and Fig. 6.It will be seen that
When the light induction element the most driven driven fortune carried out as shown by (b) in (a) in Fig. 6 and Fig. 6
Time dynamic, it is possible to make the center phase of the hot spot that the laser beam inciding optical glass formed on optical glass
To uniform mobile, such as enable to hot spot and move in the scope of the circle with initial position as the center of circle.
Wherein, as (a) in Fig. 6 or such as Fig. 6 in (b) shown by light induction element driven along one
Individual rotary shaft rotates, it is understood that carry out one-dimensional rotation for light induction element is driven；In Fig. 6
The light induction element shown by (c) driven carry out such as (a) in Fig. 6 or such as (b) in Fig. 6 simultaneously
Shown rotation, it is understood that for the driven rotation carrying out two dimension of light induction element.
In view of under normal circumstances, optical glass is due to Design and Machining reason, the circumferential area light at edge 10%
Learn performance to decline than central circumferential region, aberration phenomenon, usually, optical glass such as occur
Center light treatment effeciency is the highest.Further, in some embodiments of the present invention, the driven institute of light induction element
The motion carried out, it should the laser beam being mapped to described optical glass institute's shape on optical glass can be inducted into
The hot spot become, in the range of the area coverage of its motion track is limited in the 95% of whole optical glass, without departing from
The region that optical glass glazing disposal ability is stronger, and not too close to the edge of optical glass, from
And ensure the position of hot spot to move not and affect the optical glass treatment effeciency to laser beam.
Alternatively, in some embodiments of the present invention, light induction element can driven periodically move,
Driven can also carry out acyclic motion.
Such as, light induction element can move when each setting duration arrives；The most such as, Ke Yigen
Control light induction element according to the light decay situation of optical glass to move, such as, arrive the saturating of optical glass in test
When the rate of mistake have dropped 10-20%, control light induction element and move.
Alternatively, light induction element is driven can carry out uniform motion, it is also possible to carry out non-uniform movement.Ratio
As, the movement velocity of light induction element can be adjusted according to light decay situation.
Wherein, in LASER Light Source, the light decay of optical glass is irradiated by laser and is formed, and laser shines for a long time
The a certain position being mapped on optical glass, will make this position be formed and send out mist, and cause transmitance to decline, light
The light decay situation learning eyeglass can be represented by the transmitance decline percentage ratio of optical glass.
Alternatively, in some embodiments of the invention, the incident laser beam of photo-conduction cell is parallel sharp
Light light beam.Alternatively, in some embodiments of the invention, the outgoing laser beams of photo-conduction cell is flat
Row laser beam.
Specifically, light induction element can be arranged in the light path of LASER Light Source and accept the irradiation of parallel laser light beam
The front of optical glass.Such as in the laser beam shaping light path part shown in Fig. 2, light induction element has
Body can be arranged on the optics of the concavees lens 203 shown in Fig. 2 and the outgoing laser beams accepting concavees lens 203
Between eyeglass.
Shaping light path schematic diagram based on laser beam illustrated in fig. 2, Fig. 7 shows as shown in Figure 4
Some of the present invention use transmissive element as the embodiment application of light induction element and laser beam shown in Fig. 2
The schematic diagram of shaping light path part.Fig. 8 shows some employing reflecting elements of the present invention as shown in Figure 5
Embodiment as light induction element is applied and the schematic diagram of laser beam shaping light path part shown in Fig. 2.
As it is shown in fig. 7, in this laser beam shaping light path, have employed transmissive element 701 and guide as light
Element, is arranged between concavees lens 703 and optical glass 704, and the driven edge of transmissive element 701 rotates.
As it is shown in fig. 7, parallel laser light beam is incident to convex lens 702, arrive concavees lens 703 through assembling,
Light beam in the trend of convergence is dissipated by concavees lens 703, forms the parallel laser light beam that area is less, should
Parallel laser beam orthogonal incident transmission element 701, exiting parallel again after transmissive element 701 transmission
To optical glass 704 (outgoing beam shown in solid in Fig. 7), the position on optical glass 704
Form hot spot；And when transmissive element 701 is driven rotate after (transmissive element 701 rotates as shown in Figure 7
Angle γ), transmissive element 701 is relative to laser beam incident direction run-off the straight, and laser beam is the most vertical
Straight incident transmission element 701 surface, but with transmissive element 701 surface, there is an incident angle, transmission unit
Part 701 has a thickness, and according to the law of refraction, laser beam is sent out in transmissive element 701 material internal transmission
Raw refraction, and again reflect outgoing from another surface, the laser beam (outgoing shown in dotted line in Fig. 7 of outgoing
Light beam) parallel displacement will be there is relative to the light beam of original outgoing (outgoing beam shown in solid in Fig. 7),
Thus the position incided on optical glass 704 surface will change accordingly, as it is shown in fig. 7, at optics
Another position on eyeglass 704 forms hot spot.
As shown in Figure 8, this laser beam shaping light path have employed reflecting element 801 as light guiding element
Part, is arranged between concavees lens 803 and optical glass 804, and reflecting element 801 can driven rotate.
As shown in Figure 8, parallel laser light beam is incident to convex lens 802, arrives concavees lens 803 through assembling,
Light beam in the trend of convergence is dissipated by concavees lens 803, forms the parallel laser light beam that area is less, should
Parallel laser light beam forms hot spot through the position being reflected on optical glass 804 of reflecting element 801
(outgoing beam shown in solid in Fig. 8)；And when reflecting element 801 is driven rotate after (such as Fig. 8 institute
Show reflecting element 801 rotational angle θ), change laser beam and be incident on reflecting element 801 surface
Incident angle, based on reflection law, the change of incident angle will cause laser beam from reflecting element 801 table
The angle of face outgoing changes (irradiating light beam shown by dotted line in Fig. 8) accordingly, and therefore laser beam passes through
After reflecting element 801 reflection after rotation, the another position on optical glass 804 is formed hot spot.
The technical scheme provided for the embodiment of the present invention as shown in Figure 7 and Figure 8 is shown in Fig. 2
Application signal in laser beam shaping light path, by actual test, can obtain by using plane anti-
Penetrate mirror as light induction element, and make it carry out the measure rotated in the range of positive and negative 0.3 to 0.5 degree, with
And by employing plain film glass as light induction element, and make it hanging down relative to laser beam incident direction
Face the measure carrying out rotating in the range of the inclination angle within positive and negative 5 degree directly, it is possible to make to incide optics
The hot spot that laser beam on eyeglass is formed on optical glass moves in the range of 0.5 millimeter to 1 millimeter,
It is also obtained detecting that optical glass transmitance uses above-mentioned arranging when declining 10% by reality test simultaneously
Execute, so that the transmitance of optical glass improves 2 to 3 percentage points, so that optical glass is total
Transmitance becomes 7 percentage points, life-span the most corresponding lifting about 1/3rd.
It should be appreciated that in the actual light source light path of the LASER Light Source provided in the embodiment of the present invention, deposit
Optical glass quantity be often possible to the most, one or more pieces the front in these optical glasss is equal
Light induction element can be set such that it is able to correspondingly improves the service life of LASER Light Source.
Such as, the LASER Light Source that some embodiments of the present invention are provided can also include mono-colour laser battle array
Row, the design of its laser delivery optics can with prior art LASER Light Source based on monochromater framework
Light path design is identical, it is also possible to differ.
Alternatively, the LASER Light Source including mono-colour laser array provided in some embodiments of the present invention
In, the transmission light path of the laser sent at this mono-colour laser array includes the first optical glass and second
Optical glass, specifically, can such as between mono-colour laser array and the first optical glass, and/or
Between one optical glass and the second optical glass, light induction element is set.
The most such as, the LASER Light Source that some embodiments of the present invention are provided can also include the first laser instrument
Array and second laser array, the first laser array and second laser array are two different colours
Mono-colour laser array, specifically, the design of its laser delivery optics can with prior art in based on double-colored
The light path design of the LASER Light Source of light source framework is identical, it is also possible to differ.Such as can with shown in Fig. 3
The light path design of LASER Light Source based on double-colored light source framework is identical.
Alternatively, the first laser array and the second laser are included what some embodiments of the present invention provided
In the LASER Light Source of device array, the transmission light path of the laser sent at the first laser array includes first
Optical glass and the second optical glass, the transmission light path of the laser sent at second laser array includes
3rd optical glass and the 4th optical glass, specifically, can be in the such as one in following position or group
Close, light induction element be set: between the first laser array and the first optical glass, the first optical glass and
Between second optical glass, between second laser array and the 3rd optical glass, the 3rd optical glass and
Between four optical glasss.
For example, schematic construction based on the LASER Light Source based on double-colored light source framework shown in Fig. 3, figure
9 show that the structure of the LASER Light Source based on double-colored light source framework that some embodiments of the present invention are provided is shown
It is intended to.Similar with the LASER Light Source shown in Fig. 3, that some embodiments of the present invention are provided LASER Light Source
In include multiple convex lens, concavees lens, bloomed lens, receive optical lens group etc..Wherein, LASER Light Source bag
Include blue laser light source (the first laser array 901), red laser light source (second laser array 902),
Fluorescent wheel 903, is wherein provided with blue light transmission area and fluorescent material district on fluorescent wheel, fluorescent material at least includes green
Color fluorescent material, is used for being excited producing green fluorescence, thus and red laser, blue laser is mixed to form white light.
In the laser light based on double-colored light source framework that some embodiments of the present invention as shown in Figure 9 are provided
In source, the transmission light path of laser beam is similar with Fig. 3: the laser beam that the first laser array 901 sends
Formed less through the first convex lens 904 (i.e. can be understood as the first optical glass) light beam contracting bundle shaping
Hot spot arrives dichroic mirror 907 (i.e. can be understood as the second optical glass), second laser array 902
The laser beam sent is through the second convex lens 905 (i.e. can be understood as the 3rd optical glass) light beam contracting bundle
Less hot spot is formed, anti-by reflecting mirror 906 (i.e. can be understood as the 4th optical glass) after shaping
It is mapped to reach dichroic mirror 907, enters after dichroic mirror 907, condenser lens 908 and diffusion sheet 909
It is incident upon fluorescent wheel 903.Fluorescent wheel 903 sends fluorescence, from the transmission of the fluorescent wheel back side (transmission-type fluorescent wheel,
Including transparent substrates+phosphor powder layer), after receiving optical lens group 910, with blue laser, red laser
According to sequential, transmit to optical wand 913 through same set of light path (reflecting mirror 911 and condenser lens 912),
Carry out even light.
Specifically, in the light source optical path of LASER Light Source as shown in Figure 9, at laser beam exiting parallel
Light path can be provided with photo-conduction cell, specifically can be as shown in Figure 9, the first laser array
901 and first can arrange between convex lens 904 photo-conduction cell the 914, first convex lens 904 and two to
Photo-conduction cell 915, second laser array 902 and the second convex lens 905 can be set between color mirror 907
Between can arrange between photo-conduction cell the 916, second convex lens 905 and reflecting mirror 906, light can be set
Transport element 917 etc..
By above description it can be seen that in the embodiment of the present invention provide LASER Light Source in, at optical glass
The incident side of laser beam, be provided with light induction element, move by light induction element is driven,
The laser beam needing to incide optical glass is guided to occur translation or incident direction to change, it is thus possible to
After enough making the laser beam inciding optical glass be irradiated on optical glass, at the not coordination of optical glass
Put formation hot spot.It will be seen that the LASER Light Source that the embodiment of the present invention provides, by arranging light induction element
And the motion of light induction element, it is possible to the position that laser beam is irradiated on optical glass becomes
Change, thus avoid the laser beam long-term irradiation of the high energy same position to optical glass, and then reduce
The degree of indicative of local optical properties deterioration, reduces the aging speed of optical glass, also makes full use of meanwhile
Local around other of optical glass, has reached to improve the effect in optical glass service life.Correspondingly,
The lifting of the lifting in optical glass service life, the most beneficially machine product service life, strengthens product competitiveness.
Based on identical technology design, the embodiment of the present invention also provides for a kind of laser projection device, this laser
Projector equipment can include the LASER Light Source that any of the above-described embodiment of the present invention is provided, this laser projection device
Can be specifically laser movie theatre or laser television, or other laser projection instruments etc..
Figure 10 shows the laser projection device that some embodiments of the present invention provide.As shown in Figure 10, institute
State laser projection device to include: LASER Light Source 1001, ray machine 1002, mirror 1003.
Wherein, LASER Light Source 1001 can be the LASER Light Source that any of the above-described embodiment of the present invention is provided,
Specifically can be found in previous embodiment, will not be described in great detail at this.
Specifically, LASER Light Source 1001 provides illumination for ray machine 1002, and light beam of light source is entered by ray machine 1002
Row modulation, and export and carry out imaging to camera lens 1003, be projected to project medium 1004 (such as screen or
Body of wall etc.) form projected picture.
The present invention is with reference to method, equipment (system) and computer program product according to embodiments of the present invention
The flow chart of product and/or block diagram describe.It should be understood that can by computer program instructions flowchart and
/ or block diagram in each flow process and/or flow process in square frame and flow chart and/or block diagram and/
Or the combination of square frame.These computer program instructions can be provided to general purpose computer, special-purpose computer, embedding
The processor of formula datatron or other programmable data processing device is to produce a machine so that by calculating
The instruction that the processor of machine or other programmable data processing device performs produces for realizing at flow chart one
The device of the function specified in individual flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set
In the standby computer-readable memory worked in a specific way so that be stored in this computer-readable memory
Instruction produce and include the manufacture of command device, this command device realizes in one flow process or multiple of flow chart
The function specified in flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, makes
Sequence of operations step must be performed to produce computer implemented place on computer or other programmable devices
Reason, thus the instruction performed on computer or other programmable devices provides for realizing flow chart one
The step of the function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know base
This creativeness concept, then can make other change and amendment to these embodiments.So, appended right is wanted
Ask and be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (12)
1. a LASER Light Source, it is characterised in that include optical glass, the laser light of described optical glass
The side that bundle is incident, is provided with light induction element；
Described smooth induction element is driven to move, and guides and needs to incide the laser beam of described optical glass
Translation or incident direction is occurred to change.
2. LASER Light Source as claimed in claim 1, it is characterised in that described smooth induction element driven enter
Line period or acyclic motion.
3. LASER Light Source as claimed in claim 1, it is characterised in that the described driven edge of smooth induction element
Rotary shaft rotates, and described rotary shaft is parallel with the plane of described smooth induction element.
4. LASER Light Source as claimed in claim 1, it is characterised in that described smooth induction element is reflection
Element, or transmissive element.
5. LASER Light Source as claimed in claim 4, it is characterised in that described reflecting element is that plane is anti-
Penetrate mirror or for piezoelectric ceramics micro-electromechanical system (MEMS) galvanometer.
6. LASER Light Source as claimed in claim 4, it is characterised in that described transmissive element is plain film glass
Glass.
7. LASER Light Source as claimed in claim 6, it is characterised in that the thickness of described plain film glass is equal
Even.
8. LASER Light Source as claimed in claim 1, it is characterised in that the incidence of described photo-conduction cell
Laser beam is parallel laser light beam.
9. LASER Light Source as claimed in claim 1, it is characterised in that the outgoing of described photo-conduction cell
Laser beam is parallel laser light beam.
10. LASER Light Source as claimed in any one of claims 1-9 wherein, it is characterised in that described laser
Light source also includes mono-colour laser array；In the transmission light path of the laser that described mono-colour laser array sends
Include the first optical glass and the second optical glass；
Between described mono-colour laser array and described first optical glass, and/or at described first optical frames
Between sheet and described second optical glass, it is provided with light induction element.
11. LASER Light Sources as claimed in any one of claims 1-9 wherein, it is characterised in that described laser
Light source also includes the first laser array, second laser array；Described first laser array sends
The first optical glass and the second optical glass is included in the transmission light path of laser；Described second laser array
The 3rd optical glass and the 4th optical glass is included in the transmission light path of the laser sent；
One in following position or combination, be provided with light induction element:
Between described first laser array and described first optical glass, described first optical glass and described
Between second optical glass, between described second laser array and described 3rd optical glass, the described 3rd
Between optical glass and described 4th optical glass.
12. 1 kinds of laser projection device, including ray machine, camera lens and as in claim 1 to 11 appoint
One described LASER Light Source:
Described LASER Light Source provides illumination for described ray machine, and light beam of light source is modulated by described ray machine, and defeated
Go out and carry out imaging to described camera lens, be projected to project medium and form projected picture.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610511521.2A CN105911808A (en) | 2016-06-30 | 2016-06-30 | Laser light source and laser projection equipment |
| US15/392,012 US9979939B2 (en) | 2016-06-30 | 2016-12-28 | Light source assembly and laser projector |
| EP16207473.6A EP3264154B1 (en) | 2016-06-30 | 2016-12-30 | Light source assembly and laser projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610511521.2A CN105911808A (en) | 2016-06-30 | 2016-06-30 | Laser light source and laser projection equipment |
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| CN105911808A true CN105911808A (en) | 2016-08-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610511521.2A Pending CN105911808A (en) | 2016-06-30 | 2016-06-30 | Laser light source and laser projection equipment |
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| CN (1) | CN105911808A (en) |
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| CN106226984A (en) * | 2016-09-07 | 2016-12-14 | 海信集团有限公司 | A kind of LASER Light Source, laser projection device |
| CN107990917A (en) * | 2017-11-30 | 2018-05-04 | 四川长虹电器股份有限公司 | Laser projection code table and control method |
| CN108761549A (en) * | 2018-04-13 | 2018-11-06 | 深圳市日联科技有限公司 | A kind of adjustable X-ray detection system of amount of radiation |
| CN110023834A (en) * | 2016-12-01 | 2019-07-16 | 奇跃公司 | Projector with scanning array light engine |
| CN110543026A (en) * | 2019-10-12 | 2019-12-06 | 四川长虹电器股份有限公司 | three-piece type projection device |
| CN110726700A (en) * | 2019-11-06 | 2020-01-24 | 北京环境特性研究所 | Smoke transmittance distribution measurement and acquisition method and device |
| CN111929890A (en) * | 2020-09-25 | 2020-11-13 | 歌尔股份有限公司 | Display device, display method, and computer-readable storage medium |
| CN113437631A (en) * | 2021-06-28 | 2021-09-24 | 北京科益虹源光电技术有限公司 | Excimer laser and line width narrowing device and method |
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