CN105910062A - Low-divergence-angle full color beam generator - Google Patents
Low-divergence-angle full color beam generator Download PDFInfo
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- CN105910062A CN105910062A CN201610442436.5A CN201610442436A CN105910062A CN 105910062 A CN105910062 A CN 105910062A CN 201610442436 A CN201610442436 A CN 201610442436A CN 105910062 A CN105910062 A CN 105910062A
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- light beam
- lens
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- generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/008—Combination of two or more successive refractors along an optical axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- 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
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0916—Adapting the beam shape of a semiconductor light source such as a laser diode or an LED, e.g. for efficiently coupling into optical fibers
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- 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
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
-
- 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
- G02B27/10—Beam splitting or combining systems
- G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
-
- 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
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
Abstract
The invention belongs to the technical field of beam generators and particularly relates to a low-divergence-angle full color beam generator. The low-divergence-angle full color beam generator comprises a light source and an optical system, wherein the optical system is connected with the light source; the light source comprises optical elements, telescopic lenses and at least two multimode laser diodes used for generating beams of various colors; each optical element comprises an aspherical lens and a spectroscope; and the optical system comprises at least one lens and at least one optical lens. Owing to the arrangement of the light source and the optical system, beams incoming the optical lenses can light up 90% or more than 90% of the area of the optical lenses, the focal length of the optical lenses is larger than that of the lenses, and the distance between the lenses and the optical lenses is smaller than or equal to the total of the focal lengths thereof. Compared with the prior art, the low-divergence-angle full color beam generator has the beneficial effects of low divergence angle (0-10 degrees), round section, sharp edge, uniform light distribution, high energy conversion efficiency (25%), long service life (20,000 h) and soft color mixing effect.
Description
Technical field
The invention belongs to beam generated device technical field, particularly to the generator of the full-color light beam of a kind of low divergence.
Background technology
At present, the intensive light beam with circular cross section is mainly produced by the light of fluorescence vapour lamp, or is produced by the light of incandescent lamp bulb, or is produced by the light of the LED by one or more lens focuss.
The major defect of these devices be they cannot obtain low emission, high electro-optical efficiency, light distribution uniformly, sharp edges, colour mixture are soft, intensity is high, the intensive full-color light beam of life-span length.
The advantage that although LED has efficiently, colour mixture is soft, and its life-span can up to 20000 hours, but its beam divergence angle seldom can be less than 10 °, and their radial strength is the most quickly.
Incandescent lamp bulb and fluorescence vapour lamp can reach the beam divergence angle of 1 °, but due to the existence of plain edge, more than the 50% of primary energy all can lose.Further, both light sources cannot form soft color blending effect, and can produce more heat, need to adjust camera lens to suitable distance to realize uniform light distribution.
Relative to above light source, laser instrument, especially diode laser, it is possible to realize all features required for light beam.It has low emission, long life and high efficiency natively.Multi-wavelength can be mixed into a kind of light beam, to complete soft mixed light.But, at present, it is possible to produce to there is circular cross section and the light beam at sharp edge and obtain the device of uniform light distribution and be not yet seen in report.
It is desirable to provide the generator of the full-color light beam of a kind of low divergence, it can produce panchromatic light beam, and light beam has circular cross-section, uniform light distribution, and the dispersion angle of light beam is 0 to 10 °.
Summary of the invention
It is an object of the invention to: for the deficiencies in the prior art, and provide the generator of the full-color light beam of a kind of low divergence, it can produce panchromatic light beam, and light beam has circular cross-section, uniform light distribution, and the dispersion angle of light beam is 0 to 10 °.
To achieve these goals, the present invention is adopted the following technical scheme that
The generator of the full-color light beam of a kind of low divergence, connects including light source and optical system, described optical system and described light source；Described light source includes optical element, for setting the telescopic lenses of required width of the light beam produced from light source and at least two for producing the multimode laser diode of the light beam of shades of colour, described optical element includes aspherical lens and spectroscope, and described optical element is for merging into a collimated beam by the single laser beam that multimode laser diode produces；
Described optical system includes at least one eyeglass and at least one optical lens, and described eyeglass is for by light beam light source import optical system from the optical axis being placed in light beam, and described optical lens is arranged at the position can illuminated by the light beam coming from described eyeglass；
The layout of described light source and described optical system can make the light beam being incident to described optical lens can illuminate described optical lens more than 90% area, the focal length of described optical lens is more than the focal length of described eyeglass, and the distance between described eyeglass and described optical lens is less than or equal to their focal length sum.Illuminate this condition that illuminates of area of more than 90% to have the eyeglass of the shortest focal length by selection and realize, because the focal length of illuminated area and eyeglass is inverse ratio.Obtained by light beam remain able to reach required character in the distance that 1 m to 10m is remote, and after hundreds of rice can be remained to.
As a kind of improvement of the generator of the full-color light beam of low divergence of the present invention, described optical element includes the plane color separation optical element for the light beam of different colours is mixed into the single homocentric pencil of rays.
As a kind of improvement of the generator of the full-color light beam of low divergence of the present invention, described multimode laser diode is the laser diode for generating redness, green and blue spectral region.Red, green and blue light be enough to produce the light of white light or other shades of colours.
As a kind of improvement of the generator of the full-color light beam of low divergence of the present invention, described aspherical lens is set to three, the corresponding laser diode of each described aspherical lens, collimates with the light beam to diode.
As a kind of improvement of the generator of the full-color light beam of low divergence of the present invention, described light source includes that at least two has the laser diode of same color, and the light beam that laser diode sends is after aspherical lens collimates, then mixes through polarizing cube.
As a kind of improvement of the generator of the full-color light beam of low divergence of the present invention, the angle of divergence of light beam can be adjusted to 0 °-10 ° by adjusting the distance between eyeglass and optical lens.Wherein, it is only necessary to the focus of eyeglass and optical lens is overlapping, it is possible to obtain the light beam with 0 ° of angle of divergence.
As a kind of improvement of the generator of the full-color light beam of low divergence of the present invention, the light intensity of each diode and the color of light beam are all continuously adjustable.
As a kind of improvement of the generator of the full-color light beam of low divergence of the present invention, the cross section of the light beam entering optical system be side ratio be the square-section of 1:1 to 1:5.The width of light beam can be regulated by telescopic lenses, and this telescopic lenses includes cylindrical lens or a pair anamorphic prism, the square-section being 1:1 to 1:5 for side ratio with the cross section that regulates light beam.
As a kind of improvement of the generator of the full-color light beam of low divergence of the present invention, eyeglass is aspheric surface concavees lens.
As a kind of improvement of the generator of the full-color light beam of low divergence of the present invention, optical lens has circular iris.
As a kind of improvement of the generator of the full-color light beam of low divergence of the present invention, the numerical aperture of optical lens is more than 0.2.If the numerical aperture of optical lens is more than 0.1, then there will be deviation from spherical form, this just can be seen that from the prominent edge of the light beam of its gained.And if the numerical aperture of optical lens is more than 0.2, realize this condition of region of illuminating more than at least 90% and be not required to retain, and owing to the edge of incident beam is not reduced, thus without spherical surface error occurs, therefore can be obtained by the circular cross-section of light beam.
As a kind of improvement of the generator of the full-color light beam of low divergence of the present invention, between aspherical lens and polarizing cube, it is provided with polarization rotator, for rotating the plane of polarization of the light beam through aspherical lens collimation.Polarizing cube (or with inclined telescopic lenses replace) is the optical component of a kind of light that can transmit with certain polarizability, and it can also the polarization by reflection light vertical with aforementioned light.If two bundles have the correct face of the light directive polarizing cube of orthogonal polarizability, they will be mixed into a branch of nonpolar homocentric pencil of rays.
Relative to prior art, the invention have the benefit that the low angle of departure (0 to 10 °), circular cross-section, sharp edge, uniform light distribution, high energy conversion efficiency (25%), long life (20000h), and soft color blending effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the structural representation of the embodiment of the present invention 2.
Fig. 3 is the structural representation of the embodiment of the present invention 3.
Fig. 4 is the structural representation of the embodiment of the present invention 4.
Detailed description of the invention
Below in conjunction with embodiment, the present invention and beneficial effect thereof are described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
As it is shown in figure 1, it shown uses three multimode laser diodes as the generator of the full-color light beam of low divergence of light source for a kind of, it includes that light source 1 and optical system 2, optical system 2 and light source 1 connect；Light source 1 includes optical element 11, for setting the telescopic lenses 12 of required width of the light beam produced from light source 1 and three for producing the multimode laser diode 13 of the light beam of shades of colour, optical element 11 includes that aspherical lens 111 and spectroscope 112, optical element 11 merge into a collimated beam for the single laser beam produced by multimode laser diode 13；
Optical system 2 includes at least one eyeglass 21 and at least one optical lens 22, and eyeglass 21 is for by light beam light source 1 import optical system 2 from the optical axis being placed in light beam, and optical lens 22 is arranged at the position can illuminated by the light beam coming from eyeglass 21；
The layout of light source 1 and optical system 2 can make the light beam being incident to optical lens 22 can illuminate optical lens 22 more than 90% area, the focal length of optical lens 22 is more than the focal length of eyeglass 21, and the distance between eyeglass 21 and optical lens 22 is less than or equal to their focal length sum.
Optical element 11 includes the plane color separation optical element for the light beam of different colours is mixed into the single homocentric pencil of rays.
Multimode laser diode 13 is the laser diode for generating redness, green and blue spectral region.
Aspherical lens 111 is set to three, the corresponding laser diode of each aspherical lens 111, collimates with the light beam to diode.
Enter the cross section of light beam of optical system 2 be side ratio be the square-section of 1:1 to 1:5.
Eyeglass 21 is aspheric surface concavees lens.
Optical lens 22 has circular iris.
The numerical aperture of optical lens 22 is more than 0.2.
Specifically, in the present embodiment, one of them diode R1Produce the HONGGUANG of 700mW, second diode G1Produce the green glow of 1W, the 3rd diode B1Produce the blue light of 1.5W.Each laser beam that these three diode produces is all by aspherical lens (AS that focal length is 4.6mm1, AS2, AS3) collimation.Often restraint the light obtained and all have sizes of about the oval cross section of 1.2*5mm.The light beam obtained is by three dichroic mirror (DZ1, DZ2, DZ3) it is mixed into a branch of concentric light beam.The lens pillar that telescopic lenses (CT) 12 is respectively-6.4mm and 25mm by two focal lengths forms.Distance between two lens pillars of telescopic lenses (CT) 12 is 20+/-5mm.Telescopic lenses (CT) 12 adjusts the width of the homocentric pencil of rays with the ratio of 1:3.9 and keeps the direction of light beam.There is the circular cross section of a size of 5*5mm from telescopic lenses (CT) 12 light beam out.
The light beam of gained passes through optical system (OS) 2, and this optical system 2 is made up of spherical inflation achromatism optical lens (OD) that sphere concavees lens (S) that focal length is-15mm and a diameter of 100mm, focal length are 260mm.These eyeglasses 21 are all placed on the same axle by telescopic lenses (CT) 12 laser beam out.Distance between eyeglass (S) 21 and optical lens (OD) 22 is about 249+/-10mm.Being white from optical system (OS) 2 light beam out, a diameter of 100mm, the angle of divergence is 0 °.Along the axle of light beam, from optical system (OS) 2, from 3m to 150m, the edge of light beam is sharp, and the light intensity on beam cross section is uniform.If the Distance Shortened 15mm between eyeglass (S) 21 and optical lens (OD) 22, then the angle of divergence of light beam becomes 1 °.By changing the light intensity of any one laser diode in light source (OS) 1, the color of obtained light beam has smooth change, and does not interferes with and dissipate diameter.By closing two of which diode, it becomes possible to obtain the light beam of monochrome, do not interfere with simultaneously yet and dissipate diameter.
Wherein, the eyeglass (S) 21 in Fig. 1 could alternatively be the concavees lens that focal length is 20mm, and eyeglass 21(S) and optical lens (OD) 22 between distance can be changed to 150mm.Being changed by these, the angle of divergence of obtained light beam is 10 °.
Eyeglass (S) 21 in Fig. 1 may be replaced by the concavees lens that focal length is 25mm, and the distance between eyeglass (S) 21 and optical lens (OD) 22 can be changed to 280+/-10mm.Being changed by these, the angle of divergence of obtained light beam is 0 °.
Optical lens (OD) 22 in Fig. 1 can be replaced the glued optical lens that focal length is 50mm, and the distance between eyeglass (S) 21 and optical lens (OD) 22 can be changed to 35+/-5mm, being changed by these, the angle of divergence of obtained light beam is 0.2 °.
Embodiment 2
As in figure 2 it is shown, as different from Example 1, the present embodiment adds elements below: (R0), (AS0) (DZ0) (respectively with R1, AS1, DZ1Identical), (OR) and (PK).Diode (R0) and (R1) light beam that produces combines closely and parallel, and respectively by aspherical lens (AS0) and (AS1) collimation.Diode (R1) light beam through eyeglass (AS1) after 21 the most insusceptibly through polarizing cube (PK) 3.Diode (R0) light beam through eyeglass (AS0) after 21 through optical polarization rotator (OR) 4, this optical polarization rotator (OR) 4 can be by the plane of polarization half-twist of light beam.Hereafter, light beam is by mirror (DZ0) reflex to polarizing cube (PK) 3, due to light beam polarization rotate, this light beam again reflected and with diode (R1) light beam mixing, form single bundle homocentric pencil of rays.Different from the device in embodiment 1, the light beam that the present embodiment obtains has double energy in red spectral region.
The sectional view of light beam that testing example 2 produces, it has used following lasing light emitter: the laser diode of the transmittings HONGGUANG of two 700mW, the laser diode launching green glow of a 1W, the laser diode of the transmitting blue light of a 3.5W.The light beam that one of them red diodes produces is polarized half-twist by polarization rotator, is then mixed into single bundle homocentric pencil of rays by the light beam of polarizing cube and second red diodes.The angle of scattering of final light beam is 0.1 °, and light intensity distributions is visibly homogeneous.
Embodiment 3
As it is shown on figure 3, as different from Example 1, the present embodiment adds elements below: (G2) and (AS4) (respectively with (G1) and (AS3) identical), (OR) and (PK).Same as in Example 1, diode (R1), (B1), (G1) laser beam that sends is respectively by aspherical lens (AS1, AS2, AS3) after collimation, double-colored to optical filter (DZ1, DZ2, DZ3) upper mixing.Then, owing to the light of these three laser diode is polarized respectively, mixed light beam can pass through unaffected polarizing cube (PK) 3.Light beam (G2) by aspherical lens (AS4) after collimation by optical rotator (OR) 4, this optical rotator (OR) 4 can be by plane of polarization vertical rotary.After incident polarization cube (PK) 3, light beam by reflected in parallel, and with diode (R1), (B1), (G1) light beam that sends is concentric.
Embodiment 4
As it is shown on figure 3, as different from Example 1, the present embodiment has deducted elements below: (R1), (AS1), (DZ1) and (DZ2), and element (B1) and (AS2) be added into, so, the light beam of diode (B) passes through mirror (DZ3) afterwards with from mirror (DZ3) the light beam mixing of the diode (G) that reflects back of another side.Due to the disappearance of red diode, the chromatic zones of the light beam obtained is restricted to green and blue mixing.But, the geometrical property of light beam is identical with embodiment 1.
In a word, the invention provides a kind of device, it can produce panchromatic light beam, and light beam has the low angle of departure (0 to 10 °), circular cross-section, sharp edge, uniform light distribution.This device includes that light source (ZS), light source (ZS) include that at least two has the multimode laser diode (R, G, B) of different colours and for by laser diode (R, G, B) segment beam that produces forms optical element (AS, the DZ of collimated beam, PK, OR, CT).This device farther includes optical system (OS), and it includes at least one eyeglass and at least one optical lens, and the focal length of optical lens is more than the focal length of eyeglass, and distance therebetween is less than or equal to their focal length sum.The layout of described light source (ZS) and described optical system (OS) can make the light beam being incident to described optical lens (OD) can illuminate described optical lens more than 90% area.
The present invention is applicable to arenas, music hall, various outdoor occasion, big stadiums etc..The occasion that distance that this device is particularly suited between light-emitting device and impact point is bigger.Due to the low angle of divergence of the present invention, this impact point can well be illuminated.Big energy efficiency makes the present invention may be used for only fuel cell to be provided the occasion of energy or produces the indoor of substantial amounts of waste heat at little invalid light source.The present invention is applicable to the occasion that any needs have the laser beam of uniform light distribution, circular cross section, sharp edge and the low angle of divergence.
The announcement of book and teaching according to the above description, above-mentioned embodiment can also be changed and revise by those skilled in the art in the invention.Therefore, the invention is not limited in detailed description of the invention disclosed and described above, should also be as some modifications and changes of the present invention falling in the scope of the claims of the present invention.Although additionally, employ some specific terms in this specification, but these terms are merely for convenience of description, the present invention is not constituted any restriction.
Claims (10)
1. the generator of the full-color light beam of low divergence, it is characterised in that include that light source and optical system, described optical system and described light source connect；Described light source includes optical element, for setting the telescopic lenses of required width of the light beam produced from light source and at least two for producing the multimode laser diode of the light beam of shades of colour, described optical element includes aspherical lens and spectroscope, and described optical element is for merging into a collimated beam by the single laser beam that multimode laser diode produces；
Described optical system includes at least one eyeglass and at least one optical lens, and described eyeglass is for by light beam light source import optical system from the optical axis being placed in light beam, and described optical lens is arranged at the position can illuminated by the light beam coming from described eyeglass；
The layout of described light source and described optical system can make the light beam being incident to described optical lens can illuminate described optical lens more than 90% area, the focal length of described optical lens is more than the focal length of described eyeglass, and the distance between described eyeglass and described optical lens is less than or equal to their focal length sum.
The generator of the full-color light beam of low divergence the most according to claim 1, it is characterised in that: described optical element includes the plane color separation optical element for the light beam of different colours is mixed into the single homocentric pencil of rays.
The generator of the full-color light beam of low divergence the most according to claim 1, it is characterised in that: described multimode laser diode is the laser diode for generating redness, green and blue spectral region.
The generator of the full-color light beam of low divergence the most according to claim 1, it is characterised in that: described aspherical lens is set to three, the corresponding laser diode of each described aspherical lens, collimates with the light beam to diode.
The generator of the full-color light beam of low divergence the most according to claim 1, it is characterized in that: described light source includes that at least two has the laser diode of same color, the light beam that laser diode sends is after aspherical lens collimates, then mixes through polarizing cube.
The generator of the full-color light beam of low divergence the most according to claim 1, it is characterised in that: enter the cross section of light beam of optical system be side ratio be the square-section of 1:1 to 1:5.
The generator of the full-color light beam of low divergence the most according to claim 1, it is characterised in that: eyeglass is aspheric surface concavees lens.
The generator of the full-color light beam of low divergence the most according to claim 1, it is characterised in that: optical lens has circular iris.
The generator of the full-color light beam of low divergence the most according to claim 1, it is characterised in that: the numerical aperture of optical lens is more than 0.2.
The generator of the full-color light beam of low divergence the most according to claim 1, it is characterised in that: between aspherical lens and polarizing cube, it is provided with polarization rotator, for rotating the plane of polarization of the light beam through aspherical lens collimation.
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| CN201610442436.5A CN105910062A (en) | 2016-06-20 | 2016-06-20 | Low-divergence-angle full color beam generator |
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| CN201610442436.5A CN105910062A (en) | 2016-06-20 | 2016-06-20 | Low-divergence-angle full color beam generator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692197A (en) * | 2017-03-08 | 2018-10-23 | 长春理工大学 | laser diode light source stage lighting system |
| EP4198381A1 (en) * | 2021-12-20 | 2023-06-21 | CLAY PAKY S.p.A. | Lighting device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2933673A1 (en) * | 2014-04-16 | 2015-10-21 | KVANT spol. s r.o. | Device for creation of intensive full-color light beam with circular cross-section, homogenous light intensity distribution and beam divergence from 0 to 10° |
| CN205678593U (en) * | 2016-06-20 | 2016-11-09 | 朱玲玲 | A kind of generator of the full-color light beam of low divergence |
-
2016
- 2016-06-20 CN CN201610442436.5A patent/CN105910062A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2933673A1 (en) * | 2014-04-16 | 2015-10-21 | KVANT spol. s r.o. | Device for creation of intensive full-color light beam with circular cross-section, homogenous light intensity distribution and beam divergence from 0 to 10° |
| CN205678593U (en) * | 2016-06-20 | 2016-11-09 | 朱玲玲 | A kind of generator of the full-color light beam of low divergence |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692197A (en) * | 2017-03-08 | 2018-10-23 | 长春理工大学 | laser diode light source stage lighting system |
| EP4198381A1 (en) * | 2021-12-20 | 2023-06-21 | CLAY PAKY S.p.A. | Lighting device |
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