CN106678738A

CN106678738A - Flash lens assembly

Info

Publication number: CN106678738A
Application number: CN201710042061.8A
Authority: CN
Inventors: 佘俊; 南基学
Original assignee: Guangdong Jia Jia Photoelectric Polytron Technologies Inc
Current assignee: Guangdong Jia Jia Photoelectric Polytron Technologies Inc
Priority date: 2017-01-20
Filing date: 2017-01-20
Publication date: 2017-05-17

Abstract

The invention provides a flash lens assembly and relates to the field of semiconductor light emission. The flash lens assembly comprises a lens assembly and a LED chips, wherein a is larger than or equal to 1, the lens assembly is formed by splicing b lenses, and b is larger than or equal to 2; each lens comprises an incident plane on the upper side and an emergent plane on the lower side, and the LED chips are located on the incident plane side. According to the flash lens assembly, light emitted by one LED chip is controlled by two or more lenses, large-angle light distribution can be realized by combining the multiple LED chips and the multiple Fresnel lenses, formed light spots are uniform, and the lens assembly is small and thin, meets the market demand and is an excellent flash system.

Description

A kind of flashlight lens group

Technical field

The present invention relates to field of semiconductor illumination, specifically discloses a kind of flashlight lens group.

Background technology

The luminous efficiency height of LED, little power consumption, long service life, safety, are a kind of reliable light sources of environmental protection, extensively should For each display lighting field.Mobile phone is requisite instrument in the modern life, has merged various functions, wherein One is exactly camera function, is taken pictures in the environment of insufficient light, it is desirable to have the cooperation of flash lamp, and mobile phone flashlight is usually LED chip fit lens are used, and brightness, light distribution angle, colour temperature of flash lamp etc. can be used to evaluate the luminous effect of flash lamp Really, additionally, the build of mobile phone always towards lightweight, slimming develop, thus flash lamp it is whether light-duty, it is slim be also weigh dodge The index of light lamp quality.

At present, mobile phone flashlight lens major part is attained by light-duty, slim effect, but light distribution angle is relatively small, Hot spot is not uniform enough, during insufficient light, limits the effect of mobile phone photograph, is now to realize the luminous intensity distribution of wide-angle, can only expand The opening diameter of flashlight lens, but the attractive in appearance of mobile phone can be so affected, while the setting of mobile phone miscellaneous part is limited, it is now big The hot spot of part mobile phone flashlight is uneven, can have a strong impact on effect of taking pictures.

The content of the invention

Based on this, it is necessary to for prior art problem, there is provided a kind of flashlight lens group, light distribution angle can be realized Greatly, build is slim tiny, while hot spot is uniform.

To solve prior art problem, the present invention discloses a kind of flashlight lens group, including lens group, a LED chip, a >=1, lens group is spliced by b lens, b >=2；Lens include the plane of incidence, the exit facet of downside of upside, LED chip In the side of the plane of incidence.

Further, lens are Fresnel Lenses.

Further, lens include at least 5 complete rings.

Further, the plane of incidence is uneven, and exit facet is smoothed.

Further, a splicing edge line is formed between each two lens.

Further, LED chip is in the top of splicing edge line.

Further, a=4, b=4,4 LED chip is located at respectively 4 tops for splicing edge line.

Further, b is even number, and lens include cool colour and warm colour, are arranged alternately the lens forming lens of cool colour and warm colour Group.

Beneficial effects of the present invention are：The present invention discloses a kind of LED flash lens group, the light that a LEDs chip sends Controlled by two or more lens, combined with multiple Fresnel Lenses by plurality of LEDs chip, it is possible to achieve wide-angle is matched somebody with somebody Light, the hot spot of formation is uniform, while lens group is small-sized slim, accords with the demands of the market, and is excellent flashing light system.

Description of the drawings

Fig. 1 is the overlooking the structure diagram of the present invention.

Fig. 2 is the dimensional structure diagram of the present invention.

Fig. 3 is the side structure schematic diagram of the present invention.

Fig. 4 is the hot spot schematic diagram of the embodiment of the present invention one.

Fig. 5 is the distribution curve flux figure of the embodiment of the present invention one.

Reference is：Lens group 10, the plane of incidence 11, exit facet 12, lens 13, splicing edge line 131, LED chip 20.

Specific embodiment

For feature, technological means and the specific purposes for being reached, the function of the present invention can be further appreciated that, with reference to Accompanying drawing is described in further detail with specific embodiment to the present invention.

Referring to figs. 1 to Fig. 5.

A kind of flashlight lens group, including lens group 10, a LED chip 20, a >=1, lens group 10 is in flat cylinder Body, lens group 10 is spliced by b lens 13, b >=2, and a LED chip 20 can correspond to two or more lens 13；It is excellent Selection of land, lens 13 are Fresnel Lenses, and the thickness of energy significantly thinning lens group 10, Fresnel Lenses is noted by polyolefine material mostly The thin slice of pressure, additionally, Fresnel Lenses can also be using PC (Merlon) or PMMA (polymethyl methacrylate) material Material；Lens surface one side is bright finish, the ascending concentric circular of another side imprinting；The plane of incidence 11 of lens 13 including upside, The exit facet 12 of downside, the plane of incidence 11 is uneven, and exit facet 12 is smoothed, and LED chip 20 is located at the side of the plane of incidence 11.LED The light that chip 20 sends is transmitted into lens 13 from the plane of incidence 11, and Fresnel Lenses makes light path change, and realizes that wide-angle goes out Light a, LED chip 20 corresponds to multiple lens 13, and the light for sending can be realized bigger through the refraction of multiple Fresnel Lenses The hot spot for going out light, forming homogeneous and bright of angle, for illuminating objects evenly bright light condition, irradiated object are provided Its own real apparent condition can be reflected, it is easier to catch the details of object, and coordinate the lens of light with LED chip 20 10 volumes of group are tiny slim, can more meet the demand in market.

For realize it is various go out light mode, light can be from the outgoing of exit facet 12 after lens 13；Or in exit facet 12 Reflecting layer is set, and light enters the realization of exit facet 12 reflection again after lens 13 from the plane of incidence 11, and light is finally from exit facet 12 Side outgoing.It is different to go out light mode and meet the different market demands.

Further to strengthen the effect that LED chip 20 is used cooperatively with lens 13, one is formed between each two lens 13 Splicing edge line 131, LED chip 20 is located at the top of splicing edge line 131, under the visual angle of vertical view, wherein the one of LED chip 20 Root diagonal overlaps with corresponding splicing edge line 131.The position of LED chip 20 is rationally set so that each LED chip 20 The effect of each lens 13 can be made full use of, the hot spot to be formed that makes to emit beam is more uniform.

To enable lens 13 more fully to expand the light distribution angle of lens group, lens 13 include at least 5 complete rings, tool Body is designed according to practical situation.

Light to realize irradiation object is more natural, is suitable for the bias light of varying environment, and b is even number, and lens 13 are wrapped Cool colour and warm colour are included, the lens 13 for being arranged alternately cool colour and warm colour form lens group 10.During due to taking pictures, the colour temperature of bias light is Various, the light that changes in temperature colour temperature is alternatively formed is suitable for different photo environments, to be close to bias light in the form of come more The bias light of insufficient light is mended, the softer quality that can effectively improve photo of effect of imaging is made.

Embodiment one, flashlight lens group includes lens group 10, a=4 LED chip 20, and lens group 10 is in flat circle Cylinder, lens group 10 is spliced by b=4 lens 13, and lens 13 are Fresnel Lenses, and each lens 13 includes 5 completely Ring；The upside of lens 13 is the rough plane of incidence 11, and the plane of incidence 11 is serrated from terms of side-looking angle, and the downside of lens 13 is flat Sliding exit facet 12, LED chip is in the top of the plane of incidence 11；4 lens 13 form 4 splicing edge lines 131,4 when splicing Individual LED chip 20 is located at respectively the top in 4 splicing edge line 131 central authorities, and the center of circle of 4 lens is on same circle；Alternately The changes in temperature colour temperature of 4 lens is set.4 LED chips 20 coordinate 4 lens 13, each can profit equivalent to each LED chip 20 With 4 lens 13, light enters lens group 10 from the plane of incidence 11, from the outgoing of exit facet 12 of lens group 10, each LED chip 20 An orientation, but the light that 4 LED chips 20 send through lens group 10 are all slightly partial to through the light that lens group 10 sends It is merged, i.e., 4 light beams being slightly partial to are merged, and that realizes greater angle goes out light, is integrally formed one and becomes clear Uniform hot spot, hot spot schematic diagram as shown in Figure 4, Fig. 5 is the polar coordinate distribution curve flux figure to form light, and vertical coordinate is luminous strong Degree, unit is cd, and polar coordinate are light distribution angle, and unit is degree, be not difficult to find out the light to be formed with the spy such as high brightness, uniform Point, the lens group 10 that light is merged by changes in temperature colour temperature, the light of formation is closer to natural light.

Embodiment two, in the condition of embodiment one, in exit facet 12 reflector layer is set up, and changes the emission mode of light And path, the light that LED chip 20 sends enters lens group 10 from the plane of incidence 11, when reaching exit facet 12, due to reflective The effect of layer, realizes reflection, projects from the plane of incidence 11, and form wide-angle goes out light.

Embodiment one is optimum embodiment in the present invention.

A LED chip 20 of the invention can correspond to multiple lens 13, according to the actual requirements, arrange multiple LED chips 20 Coordinate multiple lens 13, change the lens 13 of correspondence one of a LEDs chip 20, and the centre of luminescence of LED chip 20 and thoroughly The tradition setting on the same line of the centre of luminescence of mirror 13, splicing edge line LED chip 20 being arranged between lens 13 On 131, the multiple lens 13 of light cooperation that a LED chip 20 sends form the light beam being slightly partial to, and merge each LED chip 20 light beams being slightly partial to, formation light distribution angle is big, the uniform light beam of hot spot, and lens group is small-sized slim, more conforms to market Demand.

Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art For, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the guarantor of the present invention Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.

Claims

1. a kind of flashlight lens group, it is characterised in that including lens group (10), a LED chip (20), a >=1, the lens Group (10) is spliced by b lens (13), b >=2；The lens (13) include the plane of incidence (11) of upside, the outgoing of downside Face (12), side of the LED chip (20) positioned at the plane of incidence (11).

2. a kind of flashlight lens group according to claim 1, it is characterised in that the lens (13) are saturating for Fresnel Mirror.

3. a kind of flashlight lens group according to claim 2, it is characterised in that the lens (13) are including at least 5 Complete ring.

4. a kind of flashlight lens group according to claim 2, it is characterised in that the plane of incidence (11) is uneven, The exit facet (12) smooths.

5. a kind of flashlight lens group according to claim 1, it is characterised in that shape between each two lens (13) Cheng Yigen splicings edge line (131).

6. a kind of flashlight lens group according to claim 5, it is characterised in that the LED chip (20) is positioned at described The top of splicing edge line (131).

7. a kind of flashlight lens group according to claim 5, it is characterised in that a=4, b=4,4 LED chips (20) top of described 4 splicings edge line (131) is located at respectively.

8. a kind of flashlight lens group according to claim 1, it is characterised in that b is even number, and the lens (13) include Cool colour and warm colour, the lens (13) for being arranged alternately the cool colour and warm colour form lens group (10).