CN111290195B - Double-color temperature flash lamp lens system with light distribution alignment function - Google Patents

Double-color temperature flash lamp lens system with light distribution alignment function Download PDF

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Publication number
CN111290195B
CN111290195B CN202010073549.9A CN202010073549A CN111290195B CN 111290195 B CN111290195 B CN 111290195B CN 202010073549 A CN202010073549 A CN 202010073549A CN 111290195 B CN111290195 B CN 111290195B
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lens
light
color
light distribution
lens system
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CN202010073549.9A
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CN111290195A (en
Inventor
南基学
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Zhejiang Yejia Optoelectronics Technology Co ltd
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Dongguan Jiayu Optical Technology Co ltd
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    • 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • 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
    • 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
    • F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
    • 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/06—Special arrangements of screening, diffusing, or reflecting devices, e.g. in studio
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stroboscope Apparatuses (AREA)

Abstract

The invention provides a light distribution counterpoint bicolor temperature flash lamp lens system, which comprises a first lens seat and a second lens seat, wherein a light collecting and heat dissipating ring is connected between the first lens seat and the second lens seat; the one side of first lens is equipped with four fresnel lens units that the concatenation links to each other, and the one side that first lens is close to the second lens is equipped with a plurality of microlens units that diverge, and the one side of second lens is equipped with a plurality of microlens units that converge, and the one side of first lens is equipped with a plurality of sharp V grooves, and two cell walls in sharp V groove are supplementary perpendicular and off normal inclined plane respectively. The invention can realize sufficient mixing of two color lights, so that the finally formed light spot white balance is more accurate, and finally emitted light can be distributed towards a specific area through the light adjusting structure.

Description

Double-color temperature flash lamp lens system with light distribution alignment function
Technical Field
The invention relates to a lens system, and particularly discloses a light distribution alignment double-color temperature flash lamp lens system.
Background
Flash is also one of the ways to enhance exposure, especially in dark places, where flashing helps make the scene brighter. Flash lamps are commonly used in the field of photography. The double-color-temperature flash lamp is softer than the double-LED lamp in imaging effect, the white balance is more accurate, and the quality of the picture is obviously improved in dark light shooting.
The double-color-temperature flash lamp can be used as a shooting auxiliary structure of a camera and is mainly used for a mobile phone camera shooting structure.
Disclosure of Invention
Therefore, it is necessary to provide a dual-color flash lamp lens system for light distribution alignment, which can distribute light toward a specific area to improve the utilization rate of light energy, and finally obtain high uniformity of spot brightness and accurate white balance.
In order to solve the prior art problem, the invention discloses a light distribution alignment double-color temperature flash lamp lens system which comprises a first lens seat and a second lens seat, wherein a light collecting and heat dissipating ring is connected between the first lens seat and the second lens seat, a first lens is integrally formed in the first lens seat, a second lens is integrally formed in the second lens seat, a refraction space layer is formed among the first lens, the second lens and the light collecting and heat dissipating ring, four light sources are arranged on one side of the first lens, which is far away from the second lens, and the light sources comprise two cold-color LED lamp beads and two warm-color LED lamp beads;
the one side that the second lens was kept away from to first lens is equipped with the fresnel lens unit that four concatenations link to each other, the one side that first lens is close to the second lens is equipped with a plurality of divergent microlens units that are the array and arrange, the one side that the second lens is close to first lens is equipped with a plurality of convergent microlens units that are the array and arrange, the one side that the second lens was kept away from to first lens is equipped with a plurality of sharp V grooves that are parallel to each other, two cell walls in sharp V groove are supplementary perpendicular and off normal inclined plane respectively, supplementary perpendicular is parallel with the optical axis of light source, off normal inclined plane becomes acute angle alpha with the optical axis of light source.
Furthermore, the divergent micro lens unit is an aspheric concave lens structure or a spherical concave lens structure.
Furthermore, the divergent micro lens unit is in a conical groove structure.
Further, the converging microlens unit is an aspheric convex lens structure or a spherical convex lens structure.
Furthermore, alpha is more than or equal to 30 degrees and less than or equal to 60 degrees.
Furthermore, the light collecting and heat dissipating ring is a high-light aluminum ring.
Furthermore, opaque optical glue layers are respectively connected between the light collecting and radiating ring and the first lens seat and between the light collecting and radiating ring and the second lens seat.
Furthermore, the thickness of the refraction space layer is D, the thickness of the first lens is D, and D is more than or equal to 0.2D and less than or equal to 0.6D.
Furthermore, the optical axes of the four light sources respectively pass through the circle center of each Fresnel lens unit.
Furthermore, cold color LED lamp beads and warm color LED lamp beads are arranged alternately.
The invention has the beneficial effects that: the invention discloses a light distribution counterpoint double-color temperature flash lamp lens system, light rays emitted by a convergent light source can effectively avoid light energy from leaking to the periphery, a special light mixing structure is arranged, two color light can be fully mixed, the finally formed light spot is more accurate in white balance, the mixed light rays can be collimated through beam modulation, the brightness and the uniformity of the finally formed light spot can be effectively ensured, the finally emergent light rays are inclined to one side through the light modulation structure and can face a specific light distribution area to improve the utilization rate of the light energy, and the market demand is better met.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic perspective view of another embodiment of the present invention.
Fig. 3 is an exploded view of the present invention.
FIG. 4 is an exploded view of another embodiment of the present invention.
Fig. 5 is a schematic top view of the present invention.
FIG. 6 is a schematic cross-sectional view taken along line A-A' of FIG. 5.
The reference signs are: the lens comprises a first lens seat 10, a first lens 11, a Fresnel lens unit 12, a divergent micro-lens unit 13, a second lens seat 20, a second lens 21, a convergent micro-lens unit 22, a straight V-shaped groove 23, an auxiliary vertical surface 231, an offset inclined surface 232, a light-collecting and heat-dissipating ring 30, a refraction space layer 31, an opaque optical layer 32, a light source 40, a cold-color LED lamp bead 41 and a warm-color LED lamp bead 42.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Refer to fig. 1 to 6.
The embodiment of the invention discloses a light distribution counterpoint bicolor temperature flash lamp lens system, which comprises an annular first lens seat 10 and an annular second lens seat 20, wherein a light collecting and radiating ring 30 is connected between the first lens seat 10 and the second lens seat 20, a first lens 11 is integrally formed in the first lens seat 10, a second lens 21 is integrally formed in the second lens seat 20, preferably, the first lens seat 10, the first lens 11, the second lens seat 20 and the second lens 21 are all acrylic structures, a refraction space layer 31 is formed among the first lens 11, the second lens 21 and the light collecting and radiating ring 30, the light collecting and radiating ring 30 can effectively collect light rays in the refraction space layer 31, so that the light energy loss caused by the light rays leaking from the periphery of the refraction space layer 31 is avoided, meanwhile, the light collecting and radiating ring 30 has good radiating performance, so that the influence on the performance caused by overhigh temperature of the lens system can be effectively avoided, four light sources 40 are arranged on one side of the first lens 11 far away from the second lens 21, the four light sources 40 can improve the uniformity of color light mixing, and each light source 40 comprises two cold-color LED lamp beads 41 and two warm-color LED lamp beads 42;
four Fresnel lens units 12 connected in a splicing manner are arranged on the surface of the first lens 11 far away from the second lens 21, each Fresnel lens unit 12 comprises at least five complete Fresnel rings, a plurality of divergent micro lens units 13 arranged in an array manner are arranged on the surface of the first lens 11 near the second lens 21, a large number of divergent micro lens units 13 are arranged and combined in an arrangement manner, so that the light rays at each position can be ensured to have similar and good divergent performance, a plurality of convergent micro lens units 22 arranged in an array manner are arranged on the surface of the second lens 21 near the first lens 11, a large number of convergent micro lens units 22 are arranged and combined in an arrangement manner, so that the light rays at each position can be ensured to have similar and good convergent performance, a plurality of linear V grooves 23 parallel to each other are arranged on the surface of the first lens 11 far away from the second lens 21, and two groove walls of the linear V grooves 23 are respectively an auxiliary vertical surface 231 and an offset inclined surface 232, the auxiliary vertical surface 231 is parallel to the optical axis of the light source 40, and the offset inclined surface 232 forms an acute angle α with the optical axis of the light source 40.
During operation, light rays emitted by the two cold color LED lamp beads 41 and the two warm color LED lamp beads 42 are collimated and collected through the Fresnel lens unit 12 and then reach the divergent micro lens unit 13, so that light energy loss caused by light rays diverging to the periphery of the first lens 11 is avoided, two color light rays are diverged to all directions after reaching the divergent micro lens unit 13, different color light rays are mixed in the refraction space layer 31 to enable white balance to be more accurate, the light rays mixed through the refraction space layer 31 enter the second lens 21 from the convergent micro lens unit 22, the convergent micro lens unit 22 enables light rays incident from all positions of the second lens 21 to obtain similar and good convergent collimation effects, so that brightness of finally formed light spots is uniform, energy is relatively concentrated, the light rays subjected to convergent collimation finally exit from the straight V groove 23, the deviation inclined plane 232 refracts the light rays to the same side, and the finally formed light distribution spots can face to a required area, when the camera is used for mobile phone photography, the camera is positioned on one side of the flash lamp, and the finally formed light spot can be effectively distributed in the camera shooting area.
In the present embodiment, the diverging microlens unit 13 has an aspheric concave lens structure or a spherical concave lens structure, and both the aspheric concave lens structure and the spherical concave lens structure have good light diverging performance.
In the present embodiment, the diverging microlens unit 13 is a cone-shaped groove structure, and preferably, the diverging microlens unit 13 is a cone-shaped groove or a pyramid-shaped groove, so that the light diverging effect is stronger, and light rays of different colors can be effectively mixed in the refraction space layer 31.
In the present embodiment, the converging microlens unit 22 has an aspheric convex lens structure or a spherical convex lens structure, and both the aspheric convex lens structure and the spherical convex lens structure have good light divergence performance.
In this embodiment, α is not less than 30 ° and not more than 60 °, and the offset inclined plane 232 is not inclined too much to affect the processing, and the effect of refraction dimming can be ensured.
Based on the above embodiments, the light-collecting and heat-dissipating ring 30 is a high-gloss aluminum ring, which is an annular structure made of high-gloss aluminum and has good light reflection and heat dissipation performance.
In the embodiment, the opaque optical adhesive layers 32 are respectively connected between the light collecting and heat dissipating ring 30 and the first lens mount 10 and the second lens mount 20, and the opaque optical adhesive layers 32 can effectively prevent light leakage and can effectively bond and fix the first lens mount 10 and the light collecting and heat dissipating ring 30, and the second lens mount 20 and the light collecting and heat dissipating ring 30.
In the embodiment, the thickness of the refraction space layer 31 is D, the thickness of the first lens 11 is D, and D is greater than or equal to 0.2D and less than or equal to 0.6D, so that the refraction space layer 31 has a large enough space for mixing light, and the problem that the thickness of the lens system is too large due to the too large refraction space layer 31 can be avoided.
In the present embodiment, the optical axes of the four light sources 40 respectively pass through the circle center of each fresnel lens unit 12, so that the light collection effect can be effectively improved.
Based on the above embodiment, the cold color LED lamp beads 41 and the warm color LED lamp beads 42 are alternately arranged, so that the light mixing effect can be further improved, and the white balance is more accurate.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The double-color temperature flash lamp lens system with the light distribution alignment function is characterized by comprising a first lens base (10) and a second lens base (20), wherein a light collecting and heat dissipating ring (30) is connected between the first lens base (10) and the second lens base (20), a first lens (11) is integrally formed in the first lens base (10), a second lens (21) is integrally formed in the second lens base (20), a refraction space layer (31) is formed among the first lens (11), the second lens (21) and the light collecting and heat dissipating ring (30), four light sources (40) are arranged on one side, away from the second lens (21), of the first lens (11), and each light source (40) comprises two cold-color LED lamp beads (41) and two warm-color LED lamp beads (42);
keep away from first lens (11) the one side of second lens (21) is equipped with fresnel lens unit (12) that four concatenations link to each other, first lens (11) are close to the one side of second lens (21) is equipped with a plurality of divergent microlens unit (13) that are the array and arrange, second lens (21) are close to the one side of first lens (11) is equipped with a plurality of convergent microlens unit (22) that are the array and arrange, keep away from first lens (11) the one side of second lens (21) is equipped with a plurality of sharp V groove (23) that are parallel to each other, two cell walls of sharp V groove (23) are supplementary perpendicular (231) and off normal inclined plane (232) respectively, supplementary perpendicular (231) with the optical axis of light source (40) is parallel, off normal inclined plane (232) with the optical axis of light source (40) becomes acute angle alpha.
2. The bi-color flashlamp lens system with light distribution alignment function according to claim 1, wherein the divergent micro lens unit (13) is an aspheric concave lens structure or a spherical concave lens structure.
3. The lens system of a two-color flash lamp with light distribution alignment function as claimed in claim 1, wherein the divergent micro lens unit (13) has a cone-shaped groove structure.
4. The bi-color flash lens system with light distribution alignment function according to claim 1, wherein the converging micro-lens unit (22) is an aspheric convex lens structure or a spherical convex lens structure.
5. The lens system of a two-color flashlight with light distribution alignment function of claim 1, wherein α is greater than or equal to 30 ° and less than or equal to 60 °.
6. The lens system of a light distribution aligned dual-color flash lamp as claimed in claim 1, wherein the light collecting and heat dissipating ring (30) is a high-gloss aluminum ring.
7. The lens system of the two-color flash lamp with light distribution and alignment functions as claimed in claim 6, wherein opaque optical glue layers (32) are respectively connected between the light collecting and heat dissipating rings (30) and the first lens base (10) and the second lens base (20).
8. The bi-color flashlamp lens system with light distribution alignment function according to claim 1, wherein the thickness of the refraction space layer (31) is D, the thickness of the first lens (11) is D, and D is greater than or equal to 0.2D and less than or equal to 0.6D.
9. The bi-color flashlamp lens system for light distribution alignment according to claim 1, wherein the optical axes of the four light sources (40) respectively pass through the center of each Fresnel lens unit (12).
10. The bi-color flash lamp lens system with light distribution alignment function according to claim 9, wherein the cold color LED lamp beads (41) and the warm color LED lamp beads (42) are arranged alternately.
CN202010073549.9A 2020-01-22 2020-01-22 Double-color temperature flash lamp lens system with light distribution alignment function Active CN111290195B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111352178A (en) * 2020-04-21 2020-06-30 武汉喻湖光电技术有限公司 3D sensing illumination light source with adjustable divergence angle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1916485A (en) * 2005-08-16 2007-02-21 株式会社东芝 Illuminator, led illuminator, and imaging device with illuminator
KR20130040088A (en) * 2011-10-13 2013-04-23 경북대학교 산학협력단 Double stack micro lens array
CN108124040A (en) * 2017-12-18 2018-06-05 匀加速科技有限公司 Mobile phone light compensating lamp
CN108930956A (en) * 2017-05-26 2018-12-04 广东烨嘉光电科技股份有限公司 A kind of novel flash lamp lens system
CN208794326U (en) * 2018-04-03 2019-04-26 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
US10371353B2 (en) * 2015-10-13 2019-08-06 Enplas Corporation Light-emitting device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1916485A (en) * 2005-08-16 2007-02-21 株式会社东芝 Illuminator, led illuminator, and imaging device with illuminator
KR20130040088A (en) * 2011-10-13 2013-04-23 경북대학교 산학협력단 Double stack micro lens array
US10371353B2 (en) * 2015-10-13 2019-08-06 Enplas Corporation Light-emitting device
CN108930956A (en) * 2017-05-26 2018-12-04 广东烨嘉光电科技股份有限公司 A kind of novel flash lamp lens system
CN108124040A (en) * 2017-12-18 2018-06-05 匀加速科技有限公司 Mobile phone light compensating lamp
CN208794326U (en) * 2018-04-03 2019-04-26 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

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Effective date of registration: 20231116

Address after: 311800 78 Zhancheng Avenue, Taozhu street, Zhuji City, Shaoxing City, Zhejiang Province

Patentee after: Zhejiang Yejia Optoelectronics Technology Co.,Ltd.

Address before: 523857 Room 203, building a, No.1 Dongyi street, Xingfa North Road, Wusha community, Chang'an Town, Dongguan City, Guangdong Province

Patentee before: Dongguan Jiayu Optical Technology Co.,Ltd.

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