CN208794326U - A kind of uniform efficiency flash lamp lens module of light distribution - Google Patents
A kind of uniform efficiency flash lamp lens module of light distribution Download PDFInfo
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- CN208794326U CN208794326U CN201820482076.6U CN201820482076U CN208794326U CN 208794326 U CN208794326 U CN 208794326U CN 201820482076 U CN201820482076 U CN 201820482076U CN 208794326 U CN208794326 U CN 208794326U
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Abstract
The utility model discloses a kind of uniform efficiency flash lamp lens modules of light distribution, including photophore, the collimation lens for being collimated to light being installed in above photophore, the modulation piece for uniform light distribution being installed in above collimation lens, the collimation lens is that the total reflection of ring grain shape collimates Fresnel Lenses, the collimation lens includes the aspherical collimation plane between being disposed therein, around several circle reflecting prisms of aspherical collimation plane, the reflecting prism includes the taper plane of incidence for being set to reflecting prism side and the fully reflecting surface for being set to the reflecting prism other side.The configuration of the present invention is simple, it can form the uniform light spots for just covering camera lens visual field, it improves optical energy utilization efficiency and solves the problems, such as light spot shape, color temperature uniformity simultaneously, and human eye direct-view cannot see that the shape and arrangement of luminescent device below lens, improve aesthetics.
Description
Technical field
The utility model relates to a kind of flashlight lens mould groups, are that be related to a kind of light distribution uniformly efficient more specifically
Flashlight lens mould group.
Background technique
The mobile phone flashlight of current prevalence on the market, generally comprises one or plurality of LEDs chip, is combined with round or rectangular
Secondary optical lens.Such as the United States Patent (USP) of following figure 25 Patent No. US8662703B2, secondary optical lens are light
Face is plane, and lower surface is the Fresnel Lenses of serrated face.Corresponding lens lines is substantially annulus above single LED light source
The Fresnel line of shape, the illumination spot finally cast out are all close to circular symmetrical hot spot.However mobile phone shoots photo, has
The image capturing range of effect is all largely the image of rectangle, when being used cooperatively mobile phone shooting function using flash lamp, due to flash of light
The circular light spot of lamp needs to cover four corners of photographic film, the i.e. diameter of flash lamp circular light spot, at least will be with camera square
The Diagonal Dimension of shape image is coincide, and so, a part of area of circular light spot can fall in the outside of rectangular image, cause
The efficiency of light energy utilization of flash lamp is lower.
Fresnel Lenses additionally, due to flash lamp is simple lens, itself does not have the effect of light mixing, when LED light source
Fluorescent powder coated uneven, applicator surface is larger, and when leaner, the hot spot cast out is organic to will appear yellow side.How solution is thrown
The color temperature uniformity for penetrating hot spot is also a technical problem.
And when the ring grain of Fresnel Lenses than it is shallower when, human eye by lens refraction it can directly be seen that lens below LED
The shape and arrangement mode of light source are visually not beautiful enough.
For existing mobile phone flashlight, secondary optical lens can also be round or rectangular total reflection lens,
Such as the United States Patent (USP) of following figure 26 Patent No. US8952410B2, by projection part and part is totally reflected come light distribution.Although side
The total reflection lens of shape can generate the square focus spot to match with the visual field of mobile phone camera lens, and optical efficiency is also relatively high.
But the shortcomings that there is also hot spot colour temperatures for it unevenly, human eye can see lower section LED shape through plane of refraction.
Summary of the invention
To overcome drawbacks described above in the prior art, the utility model provides a kind of uniform efficiency flash lamp lens of light distribution
Mould group can form the uniform light spots for just covering camera lens visual field, improve optical energy utilization efficiency and solve hot spot simultaneously
The problem of shape, color temperature uniformity, and human eye direct-view cannot see that the shape and arrangement of luminescent device below lens, improve beauty
Sight degree.
To achieve the above object, the utility model provides a kind of uniform efficiency flash lamp lens module of light distribution, including hair
Light device, the collimation lens for being collimated to light being installed in above photophore, is installed in above collimation lens and is used for
The modulation piece of uniform light distribution, the screening glass being installed in above modulation piece, the collimation lens are that the total reflection of ring grain shape collimates phenanthrene
Nie Er lens, the collimation lens includes the aspherical collimation plane between being disposed therein, around several circles of aspherical collimation plane
Reflecting prism, the reflecting prism include being set to the taper plane of incidence of reflecting prism side and being set to the reflecting prism other side
Fully reflecting surface.
Preferably, the modulation piece is that multi-channel projection modulates piece, the modulation piece includes being installed in table
Lenticule and it is installed in several and the consistent lower microlens array of upper lenslet dimension of lower surface on several of face, it is described
Each upper lenticule is aligned one by one with lower lenticule, the length-width ratio of the lenticule and the visual field of camera corresponding thereto
Length-width ratio is corresponding, and the upper lenticule of one of the upper surface forms a use with a lower lenticule of corresponding lower surface
After the vertex of upper lenticule in the optical channel of projection, each described optical channel is located at its corresponding lower lenticule
The vertex of focal position, the lower lenticule in each described optical channel is located at the front focus position of upper lenticule.
Preferably, the shape of the modulation piece is rectangle in curved surface, hexagon or circle.
Preferably, further including several correction lenticules or negative sense collimation lens above the modulation piece.
Preferably, it is described modulation piece further include be installed in above lower lenticule to hot spot separate forming shape
Hot spot matrix band has hollow out shape on the hot spot matrix band.
Preferably, the modulation piece is that diffractive optical structure modulates piece, the modulation piece includes diffraction optical element,
The diffraction optical element includes step-like structure and subtle optical grating construction, and the diffraction optical element can independently be installed in guarantor
Below bluff piece, it also can be set and be integrally formed in screening glass bottom and screening glass.
Preferably, the modulation piece is doping diffusion particle structural modulation piece, the modulation piece is interior doped with being used for
The diffusion particle of scattering and even light, the glass microballoon or quartzy microballon that the diffusion particle size is 3 microns~5 microns.
Preferably, the modulation piece is single layer microstructure Modulation piece, the modulation piece includes being provided with screening glass bottom
90 ° of subtle " V " shape slot structures of the ring-type in portion, the " V " shape slot structure can independently be installed in below screening glass, also can be set
It is integrally formed in screening glass bottom and screening glass.
Preferably, the modulation piece is that single layer microlens array modulates piece, the modulation piece includes that several are micro-
Mirror, several described lenticules can be independently installed in below screening glass, also can be set in screening glass bottom and screening glass one
Molding.
Preferably, the lenticule is aspherical or spherical surface, the shape of institute's lenticule is rectangle, hexagon or circle
Shape.
Preferably, the interlayer that the modulation piece is doping fluorescent powder modulates piece, the modulation piece includes fluorescent powder folder
Layer.
Preferably, the photophore is blue-ray LED or ultraviolet LED.
Preferably, the photophore is more than two blue-ray LEDs or ultraviolet LED.
Preferably, the photophore is more than two blue semiconductor laser LD or ultraviolet semiconductor laser
LD。
Preferably, the collimation lens outer ring is equipped with waterproof apron, for the waterproof to mobile phone.
Preferably, the collimation lens is optical plastic component or transparent silica gel component.
Compared with prior art, the utility model has the beneficial effects that:
The utility model includes photophore, the collimation lens for being collimated to light being installed in above photophore,
The modulation piece for uniform light distribution being installed in above collimation lens, the collimation lens are that the total reflection of ring grain shape collimates luxuriant and rich with fragrance alunite
That lens, the collimation lens includes the aspherical collimation plane between being disposed therein, and several circles around aspherical collimation plane are anti-
Prism is penetrated, the reflecting prism includes being set to the taper plane of incidence of reflecting prism side and being set to the reflecting prism other side
Fully reflecting surface can form the uniform light spots for just covering camera lens visual fields, solve light spot shape, color temperature uniformity
Problem, and human eye direct-view cannot see that the shape and arrangement of luminescent device below lens, improve aesthetics.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this
Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is a kind of uniform efficiency flash lamp lens module embodiment one of light distribution provided by the embodiment of the utility model
Sectional view；
Fig. 2 is a kind of uniform efficiency flash lamp lens module embodiment one of light distribution provided by the embodiment of the utility model
Equal shaft side decomposition figures；
Fig. 3 is a kind of uniform efficiency flash lamp lens module embodiment one of light distribution provided by the embodiment of the utility model
The isometric side view of collimation lens；
Fig. 4 is the bottom view of Fig. 3；
Fig. 5 is a kind of uniform efficiency flash lamp lens module embodiment one of light distribution provided by the embodiment of the utility model
Modulate the isometric side view of piece；
Fig. 6 is the top view of Fig. 5；
Fig. 7 is a kind of uniform efficiency flash lamp lens module embodiment one of light distribution provided by the embodiment of the utility model
Light distribution schematic illustration；
Fig. 8 is a kind of uniform efficiency flash lamp lens module embodiment one of light distribution provided by the embodiment of the utility model
The projection theory schematic diagram of one optical channel；
Fig. 9 is that a kind of uniform efficiency flash lamp lens module embodiment one of light distribution provided by the embodiment of the utility model exists
The light spot shape and Illumination Distribution schematic diagram of one meter of distant place；
Figure 10 is a kind of uniform efficiency flash lamp lens module embodiment two of light distribution provided by the embodiment of the utility model
Modulation piece isometric side view；
Figure 11 is the bottom view of Figure 10；
Figure 12 is a kind of uniform efficiency flash lamp lens module embodiment two of light distribution provided by the embodiment of the utility model
Light spot shape and Illumination Distribution schematic diagram one meter of distant place；
Figure 13 is a kind of uniform efficiency flash lamp lens module embodiment three of light distribution provided by the embodiment of the utility model
Modulation piece isometric side view；
Figure 14 is the bottom view of Figure 13；
Figure 15 is a kind of uniform efficiency flash lamp lens module embodiment three of light distribution provided by the embodiment of the utility model
Light spot shape and Illumination Distribution schematic diagram one meter of distant place；
Figure 16 is a kind of uniform efficiency flash lamp lens module example IV of light distribution provided by the embodiment of the utility model
Sectional view；
Figure 17 is a kind of uniform efficiency flash lamp lens module embodiment five of light distribution provided by the embodiment of the utility model
Sectional view；
Figure 18 is a kind of uniform efficiency flash lamp lens module embodiment six of light distribution provided by the embodiment of the utility model
Sectional view；
Figure 19 is a kind of uniform efficiency flash lamp lens module embodiment seven of light distribution provided by the embodiment of the utility model
Sectional view；
Figure 20 is a kind of uniform efficiency flash lamp lens module embodiment seven of light distribution provided by the embodiment of the utility model
Light distribution schematic illustration；
Figure 21 is a kind of uniform efficiency flash lamp lens module embodiment eight of light distribution provided by the embodiment of the utility model
Sectional view；
Figure 22 is a kind of uniform efficiency flash lamp lens module embodiment nine of light distribution provided by the embodiment of the utility model
Light distribution schematic illustration；
Figure 23 is a kind of uniform efficiency flash lamp lens module embodiment ten of light distribution provided by the embodiment of the utility model
Light distribution schematic illustration；
Figure 24 is a kind of uniform efficiency flash lamp lens module embodiment ten of light distribution provided by the embodiment of the utility model
One light distribution schematic illustration
Figure 25 is the structure chart of the United States Patent (USP) of Patent No. US8662703B2；
Figure 26 is the structure chart of the United States Patent (USP) of Patent No. US8952410B2.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
The embodiments of the present invention provide a kind of uniform efficiency flash lamp lens module of light distribution.
Embodiment one
FIG. 1 to FIG. 9 is please referred to, the utility model provides a kind of uniform efficiency flash lamp lens module of light distribution, including hair
Light device 110 is installed in the collimation lens 120 for being collimated to light of 110 top of photophore, is installed in collimation lens
The modulation piece 130 for uniform light distribution of 120 tops is installed in the screening glass 140 of 130 top of modulation piece, the collimation lens
120 collimate Fresnel Lenses for the total reflection of ring grain shape, and the collimation lens 120 includes the aspheric being set among its bottom
Face collimation plane, around several circle reflecting prisms of aspherical collimation plane, the reflecting prism includes being set to reflecting prism side
The taper plane of incidence and be set to the fully reflecting surface of the reflecting prism other side, structure is simple.
The photophore 110 is LED light source.
The collimation lens 120 collimates the light beam of LED light source incidence, and then light beam, which is incident on, is installed in collimation thoroughly
In the modulation piece 130 of the top of mirror 120, after modulation piece 130 is modulated the shapes and sizes of projected spot, project and mobile phone
The visual field of camera matches, the higher projected spot of the uniformity.
Referring to FIG. 1, the collimation lens 120 includes the first lap total reflection prism 1 that its bottom is arranged in, the second circle is complete
Reflecting prism 2 ... ... n-th encloses total reflection prism n, and the first lap total reflection prism 1 includes the first cone positioned at one side
The shape plane of incidence 1221, the first fully reflecting surface 123 positioned at its another side1, the n-th circle total reflection prism n includes being located at one
The n-th taper plane of incidence 122 of siden, the n-th fully reflecting surface 123 positioned at its another siden。
The modulation piece 130 is the modulation piece 130 that multiple optical channels are composed, and the modulation piece 130 includes installing
Lenticule and several and the consistent lower lenticule battle array of upper lenslet dimension of lower surface are installed on several of upper surface
Column, the upper lenticule 132 and lower lenticule 131 are rectangle, and each upper lenticule is aligned one by one with lower lenticule, described
The length-width ratio of the visual field of the camera of the length-width ratio of lenticule corresponding thereto is corresponding, that is, if the visual field of mobile phone camera
Length-width ratio is 4:3, then the length-width ratio of lenticule 132 and lower lenticule 131 is also 4:3 on each rectangle, the upper table
The upper lenticule of one of face forms an optical channel for projection with a lower lenticule of corresponding lower surface, described
The vertex of upper lenticule in each optical channel is located at the back focus position of its corresponding lower lenticule, each described light
The vertex for learning the lower lenticule in channel is located at the front focus position of upper lenticule.
Referring to FIG. 8, the shape of the lower lenticule 131 is rectangle curve form, the lower lenticule 131 includes installing
The first edge A in one side1, the second edge B of the other side1, it is located at the first edge A1With the second edge B1Intermediate the
One vertex O1, the shape of the upper lenticule 132 is and the consistent rectangle curve form of lower lenticule 131, the upper lenticule
132 include the third edge A for being installed in one side2, the 4th edge B of the other side2, it is located at third edge A2With the 4th edge
B2The second intermediate vertex O2, the second vertex O of the upper lenticule 1322It is overlapped with the front focus position of lower lenticule 131, institute
State the first vertex O of lower lenticule 1311It is overlapped with the back focus position of the upper lenticule 132, that is, lenticule 131 is played to be located at
The back focal plane position of upper lenticule 132.Lower lenticule 131 is pushed up the second of the convergence of rays of collimated incident to upper lenticule 132
Point O2The picture of the square of lower lenticule 131 is amplified and is projected away by position, upper lenticule 132, forms a length and width
Than projection light spot shape identical with upper lenticule 132 and lower 131 length-width ratio of lenticule.
Due to projected spot be single optical channel lower lenticule 131 amplification conjugate image, human eye from top in face of
Light sees the picture that can only see the rectangle amplification of lower lenticule 131, can't see the LED light emitter positioned at 120 lower section of collimation lens
Shape and arrangement mode.
It, can by adjusting the upper lenticule 132 of single optical channel and the focal length length and its shape of lower lenticule 131
Easily to adjust the size of projected spot and the shape of projected spot, the shape of projected spot and each upper lenticule
132 is related to the shape of lower lenticule 131, if the shape of upper lenticule 132 and lower lenticule 131 is rectangle, then after projection
The shape of whole hot spot is also rectangle, if the shape of upper lenticule 132 and lower lenticule 131 is hexagon, then whole after projection
The shape of body hot spot is also hexagon, if the shape of upper lenticule 132 and lower lenticule 131 is circle, then whole after projection
The shape of hot spot is also round.Shape by adjusting upper lenticule 132 and lower lenticule 131 come to the shape of projected spot and
Size realizes modulation, extremely matches with mobile phone camera picture size since the size of flash lamp projected spot is adjustable, light
Spot will not project except cell-phone camera area of bed, realize the high usage to luminous energy.
Since modulation piece 130 is that multiple identical optical channels are composed, the light distribution of each of which optical channel complete one
It causes, i.e., each optical channel generates projection shape, the duplicate projected spot of projection scope, the projection of multiple optical channels
It is visibly homogeneous that colour temperature is formed after Bright folding, Illumination Distribution also visibly homogeneous rectangle entirety hot spot.
The present embodiment is using modulation piece 130, even if some of them channel breaks down, such as wherein lenticule 132 on one or two
Or lower lenticule 131 is scratched or is made dirty, the shape and the uniformity of whole hot spot are unaffected, and the illumination that only projects can be because
The damage two in channel slightly reduces.
Referring to FIG. 9, it is 1mm x 1mm that Fig. 9, which is the present embodiment in the chip of LED light source 110, luminous flux is 100 streams
Light spot shape and Illumination Distribution figure when bright, one meter of distant place.Black dotted lines box is mobile phone camera histogram in hot spot
The range of taking pictures of picture is just completely covered by the square focus spot figure of multi-channel projection.It is seen that the hot spot of its projection
Somewhat pincushion distortion is schemed, this is because will be corresponding to the diagonal line of the rectangular field of mobile phone camera lens in the present embodiment
Field angle full-shape is set as 90 °, and field angle is bigger, the limit field angle of substantially existing mobile phone camera lens.Therefore institute
The projection angle for stating the diagonally opposing corner of each optical channel in modulation piece 130 will match with the field angle of mobile phone camera,
I.e. it is also 90 °, and relative aperture focal length/cornerwise ratio F/D is smaller, be based on such design, optical channel it is upper
The curved surface of the curved surface of lenticule 132 and lower lenticule 131 leads to projection pattern somewhat pincushion distortion than more prominent.
Mobile phone camera lens relatively small for field angle, such as the field angle of pick-up lens only have 60 °, modulate piece
The corresponding projection angle of the clinodiagonal of 130 each optical channel can be arranged smaller, at this moment each optics
The curved surface of lenticule 132 and lower lenticule 131 can be than more gentle on channel, and distortion opposite can also improve.
To improve distortion, described several settable correction lenticules of 130 top of modulation piece will modulate the upper table of piece 130
The not gentle curved optic channel in face and lower surface is changed to the relatively gentle optical channel combination of curved surface, can also be by will be more
The field angle of channel modulation piece 131 is designed a little bit smaller, then adds one in the position of the screening glass 140 of the top of modulation piece 130
A negative sense Fresnel Lenses is as field lens by field angle expansion.
The screening glass 140 can be sheet glass as needed, or plastic sheet is used to improve for doping color
The optical filter of flash lamp colour rendering index.
The material of the collimation lens 120 is optical plastic or transparent silica gel.
Embodiment two
Figure 10~Figure 12 is please referred to, the present embodiment and the difference of embodiment one are to modulate the upper of piece 230 in the present embodiment
The shape of lenticule and lower lenticule is hexagon curved surface.
The curved surface of the upper lenticule is located at the front focal plane position of the curved surface of lower lenticule, and the curved surface of lower lenticule is located at upper
The back focal plane position of the curved surface of lenticule, upper lenticule project to the hexagonal shape of its corresponding lower lenticule at a distance.
Figure 12 is please referred to, be the present embodiment in the chip of LED light source is 1mm x 1mm, luminous flux is 100 lumens
When, light spot shape and Illumination Distribution figure one meter of distant place, as shown, its shape for projecting hot spot is hexagon.
Embodiment three
Figure 13~Figure 15 is please referred to, the present embodiment and the difference of embodiment one are to modulate the upper of piece 330 in the present embodiment
The shape of lenticule and lower lenticule is circular curved surface.
The curved surface of the upper lenticule is located at the front focal plane position of the curved surface of lower lenticule, and the curved surface of lower lenticule is located at upper
The back focal plane position of the curved surface of lenticule, upper lenticule project to the circular shape of its corresponding lower lenticule at a distance.
Figure 15 is please referred to, be the present embodiment in the chip of LED light source is 1mm x 1mm, luminous flux is 100 lumens
When, light spot shape and Illumination Distribution figure one meter of distant place, as shown, its shape for projecting hot spot is hexagon.
Example IV
Figure 16 is please referred to, the utility model provides a kind of uniform efficiency flash lamp lens module of light distribution, including photophore
410, it is installed in the collimation lens 420 for being collimated to light of 410 top of photophore, is installed on collimation lens 420
The modulation piece 430 for uniform light distribution of side, is installed in the screening glass 440 of 430 top of modulation piece, and the collimation lens 420 is
The total reflection of ring grain shape collimates Fresnel Lenses, and the collimation lens 420 includes the aspherical collimation being set among its bottom
Face, around several circle reflecting prisms of aspherical collimation plane, the reflecting prism includes the taper for being set to reflecting prism side
The plane of incidence and the fully reflecting surface for being set to the reflecting prism other side.
The collimation lens 420 includes the first lap total reflection prism 1 that its bottom is arranged in, the second circle total reflection prism
2 ... ... n-th circle total reflection prism n, the first lap total reflection prism 1 include the first taper plane of incidence positioned at one side
4221, the first fully reflecting surface 423 positioned at its another side1, the n-th circle total reflection prism n includes positioned at the of one side
The n taper plane of incidence 422n, the n-th fully reflecting surface 423 positioned at its another siden。
The present embodiment and embodiment one, the difference of embodiment two and embodiment three are, close to modulation piece 430 in the present embodiment
Lower lenticule at be installed with a piece of hot spot matrix band 433 with hollow out shape, hot spot matrix band described in the present embodiment 433
It is preferably carved with the hollow out metal foil of specific pattern, hollow out metal foil can be carried out according to actual needs, can be projected
Hot spot with special pattern, such as company LOGO, two dimensional code, figure or text, the hot spot matrix band 433 are located at several
Several lower lenticules of the rear near focal point of upper lenticule, 433 lower section of hot spot matrix band collimation lens will enter from below
The light beam penetrated converges to vertex position of each corresponding upper lenticule, and lenticule is by each micro-pattern on each
Intensified image project, single, clearly projection pattern is formed after superposition.
The collimation lens 420 is transparent optical silica gel material, and the outer ring of the upper surface of flange is additionally provided with water proof ring
425, for carrying out waterproof to mobile phone.
Embodiment five
Figure 17 is please referred to, the utility model provides a kind of uniform efficiency flash lamp lens module of light distribution, including photophore
510, it is installed in the collimation lens 520 for being collimated to light of 510 top of photophore, is installed on collimation lens 520
The screening glass 540 for uniform light distribution of side, the collimation lens 520 are that the total reflection of ring grain shape collimates Fresnel Lenses, institute
Stating collimation lens 520 includes the aspherical collimation plane being set among its bottom, and several circles around aspherical collimation plane reflect
Prism, the reflecting prism include being set to the taper plane of incidence of reflecting prism side and being set to the complete of the reflecting prism other side
Reflecting surface.
The collimation lens 520 includes the first lap total reflection prism 1 that its bottom is arranged in, the second circle total reflection prism
2 ... ... n-th circle total reflection prism n, the first lap total reflection prism 1 include the first taper plane of incidence positioned at one side
5221, the first fully reflecting surface 523 positioned at its another side1, the n-th circle total reflection prism n includes positioned at the of one side
The n taper plane of incidence 522n, the n-th fully reflecting surface 523 positioned at its another siden。
The present embodiment and embodiment one, the difference of embodiment two, embodiment three and example IV is the guarantor in the present embodiment
Diffraction optical element 541 is carved in the lower surface of bluff piece 540, and the diffraction optical element 541 is to be carved in 540 bottom of screening glass
Step-like, subtle optical grating construction, the diffraction optical element 541 are used for the light to 520 collimated incident of lower section Fresnel Lenses
Beam is modulated towards different directions, by fine structure of different shapes, by the projected spot of emergent ray with squarely,
Circle or other shapes enable the hot spot broken forth to cover the visual field of mobile phone camera lens.
Since diffraction optical element 541 is carved in the lower section of screening glass 540, when human eye is looked down by the screening glass 541, by
There is directionality in modulated light, human eye can not see the shape or arrangement mode of lower section photophore 510.
The collimation lens 520 is transparent optical silica gel material, and the outer ring of the upper surface of flange is additionally provided with water proof ring
525, for carrying out waterproof to mobile phone.
Embodiment six
Figure 18 is please referred to, the utility model provides a kind of uniform efficiency flash lamp lens module of light distribution, including photophore
610, it is installed in the collimation lens 620 for being collimated to light of 610 top of photophore, is installed on collimation lens 620
The screening glass 630 for being used for uniform light distribution and shield of side, the collimation lens 620 are that the total reflection of ring grain shape is ultrathin
Fresnel Lenses is collimated, the collimation lens 620 includes the aspherical collimation plane being set among its bottom, surrounds aspherical standard
Several circle reflecting prisms faced directly, the reflecting prism include being set to the taper plane of incidence of reflecting prism side and being set to anti-
Penetrate the fully reflecting surface of the prism other side.
The bottom of screening glass 630 in the present embodiment is carved with cyclic annular subtle " V " type groove 631, " V " type groove 631
Play the role of playing the role of with the modulation piece in above-described embodiment it is consistent, " V " type groove 631 be 90 °, be installed in protection
After the beam collimation of ultrathin collimation self-luminous in the Fresnel Lenses future device 610 of 630 lower section of piece, light beam passes through " V " type groove 631
It projects upwards, realizes uniform light distribution.
After the light that human eye is looked down carries out two secondary reflections in " V " type groove, along backtracking outer space, so this reality
Applying human eye in example also can't see LED shape and arrangement mode below lens, improve aesthetics.
The collimation lens 620 is transparent optical silica gel material, and the outer ring of the upper surface of flange is additionally provided with water proof ring
625, for carrying out waterproof to mobile phone.
Embodiment seven
Figure 19~Figure 20 is please referred to, the utility model provides a kind of uniform efficiency flash lamp lens module of light distribution, including
Photophore 710 is installed in the collimation lens 720 for being collimated to light of 710 top of photophore, is installed in collimation lens
The modulation piece 730 for uniform light distribution of 720 tops is installed in the screening glass 740 of 730 top of modulation piece to shield,
The collimation lens 720 is that the total reflection of ring grain shape collimates Fresnel Lenses.
Doped with diffusion particle inside modulation piece 730 in the present embodiment, the diffusion particle is size 3 microns~5
The glass microballoon of micron or quartzy microballon, play scattering and even light action.
The collimation lens 720 includes the first scrobicula face 721 being located therein, and it is shallow to be located at first for the second scrobicula face 722
First lap total reflection prism 723, second outside concave surface 721 and the second scrobicula face 722 encloses total reflection prism 724, and third circle is all-trans
Penetrate prism 725, the 4th circle total reflection prism 726.
The photophore 710 issues light beam, is incident in collimation lens 720, the first scrobicula face 721 among lens and the
Incident light is directly diffused by two scrobicula faces 722, and diffusing light is homogenized through ovennodulation piece 730, finally by protecting
Bluff piece 740 exports, the circle total reflection prism 724 of first lap total reflection prism 723, second, third circle total reflection prism 725, and the 4th
It encloses total reflection prism 726 and incident ray is intersected into convergence toward the direction of optical axis, the light after convergence scatters again, and through ovennodulation
Piece 730 is homogenized, and is finally exported by screening glass 740.
The light that the first scrobicula face 721 by among collimation lens 720 and the second scrobicula face 722 are directly spread,
And total reflection prism 724 is enclosed by the first lap total reflection prism 723, second on the outside of collimation lens, third circle is totally reflected rib
Mirror 725, the 4th circle total reflection prism 726 intersect the light to scatter after convergence, this two-part light projectional angle having the same
Degree.
Screening glass 740 described in the present embodiment is the harder PMMA material of hardness, the modulation piece 730 with lower section
And collimation lens 720 is using the method injection molding of double-material injection-molding.
The modulation piece 730 of uniform light distribution is used for as described in the present embodiment, inside mix and have diffusion particle, because of this person
When eye looks on the outside of lens, the shape and arrangement mode of LED light source can't see, improve aesthetics.
The collimation lens 720 is transparent optical silica gel material, and the outer ring of the upper surface of flange is additionally provided with water proof ring,
For carrying out waterproof to mobile phone.
Embodiment eight
Figure 21 is please referred to, the utility model provides a kind of uniform efficiency flash lamp lens module of light distribution, including photophore
810, it is installed in the collimation lens 820 for being collimated to light of 810 top of photophore, is installed on collimation lens 820
The screening glass 830 for being used for uniform light distribution and shield of side, the collimation lens 820 are that the total reflection of ring grain shape collimates phenanthrene
Nie Er lens.
The collimation lens 820 includes the first scrobicula face 821 being located therein, and it is shallow to be located at first for the second scrobicula face 822
First lap total reflection prism 823, second outside concave surface 821 and the second scrobicula face 822 encloses total reflection prism 824, and third circle is all-trans
Penetrate prism 825, the 4th circle total reflection prism 826.
The bottom of the screening glass 830 offers several lenticules 831, and photophore 810 issues light beam, saturating by collimating
Light beam is carried out light distribution and forms projectional angle and the much the same range of mobile lens visual field by mirror 820, then saturating by being located at collimation again
The lenticule 831 of 820 top of mirror projects away after homogenizing to output beam.
The photophore 810 issues light beam, is incident in collimation lens 820, the first scrobicula face 821 among lens and the
Incident light is directly diffused by two scrobicula faces 822, and diffusing light projects away after lenticule 831 is homogenized,
First lap total reflection prism 823, second encloses total reflection prism 824, third circle total reflection prism 825, the 4th circle total reflection prism
Incident ray is intersected toward the direction of optical axis and assembles by 826, and the light after convergence scatters again, and is carried out by lenticule 831 even
It is projected away after change.
The lenticule 831 can need that rectangular, hexagon or circle is arranged according to light distribution, to form light of different shapes
Spot.Since screening glass bottom is provided with several lenticules 831, the top of each lenticule 831 forms light slight one by one
Point, the direction that human eye is exported against light are seen, can only see these small luminous points, and can't see the photophore 810 below lenticule
LED shape or LED arrangement mode, improve aesthetics.
The collimation lens 820 is transparent optical silica gel material, and the outer ring of the upper surface of flange is additionally provided with water proof ring,
For carrying out waterproof to mobile phone.
Embodiment nine
Figure 22 is please referred to, the utility model provides a kind of uniform efficiency flash lamp lens module of light distribution, including photophore
910, it is installed in the collimation lens 920 for being collimated to light of 910 top of photophore, is installed on collimation lens 920
The modulation piece 930 for uniform light distribution of side is installed in the screening glass 940 of 930 top of modulation piece to shield, the standard
Straight lens 920 are that the total reflection ultrathin type of ring grain shape collimates Fresnel Lenses, and the collimation lens 920 includes being set to its bottom
Intermediate aspherical collimation plane, around several circle reflecting prisms of aspherical collimation plane, the reflecting prism includes being set to instead
It penetrates the taper plane of incidence of prism side and is set to the fully reflecting surface of the reflecting prism other side.
The collimation lens 920 includes the first lap total reflection prism 1 that its bottom is arranged in, the second circle total reflection prism
2 ... ... n-th circle total reflection prism n, the first lap total reflection prism 1 include the first taper plane of incidence positioned at one side
9221, the first fully reflecting surface 923 positioned at its another side1, the n-th circle total reflection prism n includes positioned at the of one side
The n taper plane of incidence 922n, the n-th fully reflecting surface 923 positioned at its another siden。
The photophore 910 is blue-ray LED or ultraviolet LED, and the modulation piece 930 is the interlayer of doping fluorescent powder.
The light beam that photophore 910 issues is incident in modulation piece 930 after being assembled by collimation lens 920, modulates piece
Equally distributed area source white light is generated after fluorescent powder stimulated emission in 930, is projected by screening glass 940.
The direction of human eye in face of collimation lens 920 is seen, can only see the fluorescent powder interlayer of modulation piece 930, and can't see standard
The blue-ray LED of photophore 910 or the shape of ultraviolet LED or arrangement mode of straight 920 lower section of lens, improve aesthetics.
The material of the collimation lens 920 is optical plastic or transparent silica gel material, the outer ring of the upper surface of flange
It is additionally provided with water proof ring, for carrying out waterproof to mobile phone.
Embodiment ten
Figure 23 is please referred to, the utility model provides a kind of uniform efficiency flash lamp lens module of light distribution, including the first hair
Light device 1011 and the second photophore 1012 for being installed in 1011 side of the first photophore, are installed in the first photophore 1011 and second
The collimation lens 1020 for being collimated to light of 1012 top of photophore, is installed in being used for for 1020 top of collimation lens
The modulation piece 1030 of uniform light distribution, is installed in the screening glass 1040 of 1030 top of modulation piece to shield, and the collimation is saturating
Mirror 1020 includes first collimation lens 1021 corresponding with the first photophore 1011, is installed in 1021 side of the first collimation lens
In corresponding second collimation lens 1022 of the second photophore 1012, first collimation lens 1021 and the second collimation are saturating
Mirror 1022 is that the total reflection ultrathin type of ring grain shape collimates Fresnel Lenses, first collimation lens 1021 and the second collimation lens
1022 include the aspherical collimation plane being set among its bottom, described around several circle reflecting prisms of aspherical collimation plane
Reflecting prism includes the taper plane of incidence for being set to reflecting prism side and the fully reflecting surface for being set to the reflecting prism other side.
The modulation piece 1030 is the interlayer of doping fluorescent powder.
First photophore 1011 and the second photophore 1012 are blue-ray LED or ultraviolet LED.
The light beam that first photophore 1011 issues is incident on modulation after being assembled by the first collimation lens 1021
In piece 1030, equally distributed area source white light is generated after modulating the fluorescent powder stimulated emission in piece, passes through the protection of top
Piece 1040 projects, and the light beam that second photophore 1012 issues is incident on tune after being assembled by the second collimation lens 1022
In film-making 1030, equally distributed area source white light is generated after modulating the fluorescent powder stimulated emission in piece 1030, passes through top
Screening glass 1040 projects.
The direction of human eye in face of collimation lens is seen, can only see the interlayer of fluorescent powder, and can't see under collimation lens 1020
The shape or arrangement mode of first photophore 1011 of side and the blue-ray LED of the second photophore 1012 or ultraviolet LED improve beauty
Sight degree.
The material of the collimation lens 1020 is optical plastic or transparent silica gel material, the outer ring of the upper surface of flange
It is additionally provided with water proof ring, for carrying out waterproof to mobile phone.
Embodiment 11
Figure 24 is please referred to, the utility model provides a kind of uniform efficiency flash lamp lens module of light distribution, including at least two
A photophore, preferably two photophores, are respectively the first photophore 1111, are installed in the first photophore in the present embodiment
Second photophore 1112 of 1111 sides, be installed in the first photophore 1111 and the top of the second photophore 1112 for uniformly matching
The modulation piece 1120 of light is installed in the collimation lens 1130 of 1120 top of modulation piece, the quantity and hair of the collimation lens 1130
The quantity of light device is corresponding, so the collimation lens 1130 in the present embodiment includes and the first photophore 1111 corresponding first
Collimation lens 1131, be installed in 1131 side of the first collimation lens in corresponding second collimation lens of the second photophore 1112
1132, first collimation lens 1131 and the second collimation lens 1132 are saturating for the total reflection ultrathin type collimation Fresnel of ring grain shape
Mirror, first collimation lens 1021 and the second collimation lens 1022 include the aspherical collimation plane being set among its bottom,
Around several circle reflecting prisms of aspherical collimation plane, the reflecting prism includes the taper incidence for being set to reflecting prism side
Face and the fully reflecting surface for being set to the reflecting prism other side.
The modulation piece 1120 is the interlayer of doping fluorescent powder, and the quantity and photophore and collimation of the fluorescent powder interlayer are saturating
The quantity of mirror 1130 is corresponding, so the fluorescent powder interlayer in the present embodiment includes the first fluorescent powder interlayer 1121 and is installed in the
Second fluorescent powder interlayer 1122 of one fluorescent powder interlayer, 1121 side.
First photophore 1111 and the second photophore 1112 are semiconductor laser LD, are blue-light semiconductor laser
Diode, ultraviolet semiconductor lasers diode or vertical cavity emitting laser, the light beam that the first photophore 1111 issues pass through remote
Cheng Guanglu excites the first fluorescent powder interlayer 1121 to generate white light, white light after excitation pass through the first collimation lens 1131 of top into
Row light distribution, the light beam that the second photophore 1112 issues excite the second fluorescent powder interlayer 1122 to generate white light by long-range optical path, swash
The second collimation lens 1132 that white light after hair passes through top carries out light distribution, finally projects and mobile phone camera field angle size
The hot spot being consistent, the present embodiment, which is able to achieve, excites fluorescence with the mode remotely controlled.
The first fluorescent powder interlayer 1121, the second fluorescent powder interlayer 1122 and collimation lens 1130 use extra quality molding
Method production.
The material of the collimation lens 1130 is optical plastic or transparent silica gel material, the outer ring of the upper surface of flange
It is additionally provided with water proof ring, for the waterproof to mobile phone.
In conclusion the utility model structure is simple, the uniform light for just covering camera lens visual field can be formed
Spot improves optical energy utilization efficiency and solves the problems, such as light spot shape, color temperature uniformity simultaneously, and human eye direct-view cannot see that lens
The shape and arrangement of lower section luminescent device improve aesthetics.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above-mentioned
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (17)
1. a kind of uniform efficiency flash lamp lens module of light distribution, including photophore are installed in above photophore and are used for light
The collimation lens that line is collimated, it is characterised in that: further include the modulation for uniform light distribution being installed in above collimation lens
Piece, the collimation lens are that the total reflection of ring grain shape collimates Fresnel Lenses, and the collimation lens includes between being disposed therein
Aspherical collimation plane, around several circle reflecting prisms of aspherical collimation plane, the reflecting prism includes being set to reflecting prism
The taper plane of incidence of side and the fully reflecting surface for being set to the reflecting prism other side.
2. the uniform efficiency flash lamp lens module of a kind of light distribution according to claim 1, it is characterised in that: further include dress
Screening glass above modulation piece.
3. the uniform efficiency flash lamp lens module of a kind of light distribution according to claim 2, it is characterised in that: the modulation
Piece is that multi-channel projection modulates piece, and the modulation piece includes being installed in lenticule on several of upper surface and being installed in lower surface
Several and the consistent lower microlens array of upper lenslet dimension, each upper lenticule is aligned one by one with lower lenticule,
The length-width ratio of the visual field of the camera of the length-width ratio of the lenticule corresponding thereto is corresponding, and one of the upper surface is upper micro-
Lens form an optical channel for projection with a lower lenticule of corresponding lower surface, each described optics is logical
The vertex of upper lenticule in road is located at the back focus position of its corresponding lower lenticule, in each described optical channel under
The vertex of lenticule is located at the front focus position of upper lenticule.
4. the uniform efficiency flash lamp lens module of a kind of light distribution according to claim 3, it is characterised in that: the modulation
The shape of piece is rectangle in curved surface, hexagon or circle.
5. the uniform efficiency flash lamp lens module of a kind of light distribution according to claim 3, it is characterised in that: the modulation
It further include several correction lenticules or negative sense collimation lens above piece.
6. the uniform efficiency flash lamp lens module of a kind of light distribution according to claim 3, it is characterised in that: the modulation
Piece further includes the hot spot matrix band to separate forming shape to hot spot being installed in above lower lenticule, on the hot spot matrix band
With hollow out shape.
7. the uniform efficiency flash lamp lens module of a kind of light distribution according to claim 2, it is characterised in that: the modulation
Piece is that diffractive optical structure modulates piece, and the modulation piece includes diffraction optical element, and the diffraction optical element includes step-like
Structure and subtle optical grating construction, the diffraction optical element be independently installed in below screening glass or be set to screening glass bottom with
Screening glass is integrally formed.
8. the uniform efficiency flash lamp lens module of a kind of light distribution according to claim 2, it is characterised in that: the modulation
Piece is doping diffusion particle structural modulation piece, and the modulation piece is interior doped with for scattering and the diffusion particle of even light, the expansion
Dissipate the glass microballoon or quartzy microballon that particle size is 3 microns~5 microns.
9. the uniform efficiency flash lamp lens module of a kind of light distribution according to claim 2, it is characterised in that: the modulation
Piece is single layer microstructure Modulation piece, and the modulation piece includes the cyclic annular 90 ° of subtle " V " shape slot knots for being provided with screening glass bottom
Structure, the " V " shape slot structure is independently installed in below screening glass or is set to screening glass bottom and screening glass is integrally formed.
10. the uniform efficiency flash lamp lens module of a kind of light distribution according to claim 2, it is characterised in that: the tune
Film-making is that single layer microlens array modulates piece, and the modulation piece includes several lenticules, several described lenticules independently fill
Set on screening glass lower section or it is set to screening glass bottom and screening glass integrated molding.
11. the uniform efficiency flash lamp lens module of a kind of light distribution according to claim 10, it is characterised in that: described micro-
Lens are aspherical or spherical surface, and the shape of institute's lenticule is rectangle, hexagon or circle.
12. the uniform efficiency flash lamp lens module of a kind of light distribution according to claim 2, it is characterised in that: the tune
Film-making is that the interlayer of doping fluorescent powder modulates piece, and the modulation piece includes fluorescent powder interlayer.
13. the uniform efficiency flash lamp lens module of a kind of light distribution according to claim 12, it is characterised in that: the hair
Light device is blue-ray LED or ultraviolet LED.
14. the uniform efficiency flash lamp lens module of a kind of light distribution according to claim 12, it is characterised in that: the hair
Light device is two or more blue-ray LEDs or ultraviolet LED.
15. the uniform efficiency flash lamp lens module of a kind of light distribution according to claim 12, it is characterised in that: the hair
Light device is two or more blue semiconductor laser LD or ultraviolet semiconductor laser LD.
16. a kind of uniform efficiency flash lamp lens module of described in any item light distributions, feature exist according to claim 1~15
In: the collimation lens outer ring is equipped with waterproof apron.
17. the uniform efficiency flash lamp lens module of a kind of light distribution according to claim 16, it is characterised in that: the standard
Straight lens are optical plastic component or transparent silica gel component.
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| CN201820482076.6U CN208794326U (en) | 2018-04-03 | 2018-04-03 | A kind of uniform efficiency flash lamp lens module of light distribution |
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| CN201820482076.6U CN208794326U (en) | 2018-04-03 | 2018-04-03 | A kind of uniform efficiency flash lamp lens module of light distribution |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397750A (en) * | 2018-04-03 | 2018-08-14 | 东莞市美光达光学科技有限公司 | A kind of uniform efficiency flash lamp lens module of light distribution |
| CN111290195A (en) * | 2020-01-22 | 2020-06-16 | 东莞市嘉誉光学技术有限公司 | Double-color temperature flash lamp lens system with light distribution alignment function |
| CN112788323A (en) * | 2020-12-31 | 2021-05-11 | Oppo广东移动通信有限公司 | Color temperature detection assembly, image processing terminal, method and device |
| WO2022267648A1 (en) * | 2021-06-22 | 2022-12-29 | 东莞市美光达光学科技有限公司 | Light distribution structure and light distribution method for auxiliary illumination and distance measurement |
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2018
- 2018-04-03 CN CN201820482076.6U patent/CN208794326U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397750A (en) * | 2018-04-03 | 2018-08-14 | 东莞市美光达光学科技有限公司 | A kind of uniform efficiency flash lamp lens module of light distribution |
| CN111290195A (en) * | 2020-01-22 | 2020-06-16 | 东莞市嘉誉光学技术有限公司 | Double-color temperature flash lamp lens system with light distribution alignment function |
| CN111290195B (en) * | 2020-01-22 | 2021-05-07 | 东莞市嘉誉光学技术有限公司 | Double-color temperature flash lamp lens system with light distribution alignment function |
| CN112788323A (en) * | 2020-12-31 | 2021-05-11 | Oppo广东移动通信有限公司 | Color temperature detection assembly, image processing terminal, method and device |
| CN112788323B (en) * | 2020-12-31 | 2023-02-14 | Oppo广东移动通信有限公司 | Color temperature detection assembly, image processing terminal, method and device |
| WO2022267648A1 (en) * | 2021-06-22 | 2022-12-29 | 东莞市美光达光学科技有限公司 | Light distribution structure and light distribution method for auxiliary illumination and distance measurement |
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