CN104676280A - Flashlight and light distribution lens thereof - Google Patents
Flashlight and light distribution lens thereof Download PDFInfo
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- CN104676280A CN104676280A CN201310634499.7A CN201310634499A CN104676280A CN 104676280 A CN104676280 A CN 104676280A CN 201310634499 A CN201310634499 A CN 201310634499A CN 104676280 A CN104676280 A CN 104676280A
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Abstract
The invention discloses a flashlight and a light distribution lens thereof. The flashlight comprises a light source module and the light distribution lens. The light source module comprises a light reflection cup, a main LED and multiple signal LEDs. The light distribution lens comprises a light-transmitting area and a light distribution area surrounding the light-transmitting area, and the main LED and the multiple signal LEDs are respectively opposite to the light-transmitting area and the light distribution area. The light distribution incident plane of the light distribution area is provided with an annular incident reference plane which is a concave arc plane. The light distribution incident plane includes multiple incident rings. Each incident ring comprises multiple spherical convex faces. The spherical convex faces can divide light of the signal LEDs into multiple regions to be diffused respectively, and diffusion effect is improved. The spherical convex faces of the incident rings are simultaneously connected to two adjacent spherical convex faces located in the adjacent incident rings, distances of adjacent spherical convex faces are equal, and all spherical convex faces are evenly distributed on an incident reference plane and can evenly diffuse the light of the signal LEDs, so that the irradiation coverage range of the signal LEDs can be wider, and people can easily perform recognition.
Description
Technical field
The present invention relates to lighting device, particularly relate to a kind of flashlight and light-distribution lens thereof.
Background technology
LED is as a kind of novel green light source product, and along with its luminous efficiency is high, the advantages such as power consumption is few, long service life, LED is also more and more extensive in the application of lighting field.As flashlight in portable mobile illumination, can not only realize LED illumination function now, the function of signal lamp of simultaneously can also arranging in pairs or groups.
The lampshade of existing flashlight is Transparent Parts, and is only simple flat glass.Such Transparent Parts is generally only applicable to the torch only having illumination main light source, and for the flashlight containing signal lamp, simple flat glass Transparent Parts then cannot spread the hot spot of signal LED, and shadow surface is less, not easily arouses people's attention.
Summary of the invention
The object of the present invention is to provide a kind of flashlight and light-distribution lens thereof, can effectively spread the light of signal LED, increase and irradiate coverage rate.
In order to solve the problems of the technologies described above, the invention provides a kind of light-distribution lens, the transparent area comprising a circle and the luminous intensity distribution district arranged around the central axis of described transparent area, described luminous intensity distribution district has the luminous intensity distribution plane of incidence and luminous intensity distribution exit facet that are oppositely arranged, and the described luminous intensity distribution plane of incidence has the incident reference face of a ring-type; Described incident reference face is cancave cambered surface, and revolve turnback by the benchmark camber line of two symmetries around its symmetry axis and formed, described in two, the symmetry axis of benchmark camber line is described central axis; One end of described benchmark camber line is connected to described transparent area, the other end extends to the direction away from described luminous intensity distribution exit facet; Distance on benchmark camber line described in two between symmetric points increases gradually along the direction deviating from described luminous intensity distribution exit facet;
The described luminous intensity distribution plane of incidence comprises multiple incident ring; Multiple described incident ring is sheathed is successively arranged in described incident reference face, and described in adjacent two, incident ring is connected; Each described incident ring is ring-type, comprises multiplely connecting successively and the spherical convex surface of evenly arrangement around described central axis; The number of the spherical convex surface that each described incident ring comprises is identical, and the shape size of the spherical convex surface in each described incident ring is identical; The radius of all described spherical convex surfaces is equal;
The spherical convex surface of described incident ring is connected to the adjacent two spherical convex surfaces being arranged in adjacent incident ring simultaneously, and equal to the distance of described adjacent two spherical convex surfaces.
Wherein, the centre of sphere of described spherical convex surface is positioned on described incident reference face.
Wherein, the plane of incidence of described incident reference face and described transparent area is in smoothing junction; The exit facet of described luminous intensity distribution exit facet and described transparent area is in smoothing junction.
Wherein, in same described incident ring, the diameter of described spherical convex surface is 1.1 ~ 1.4 times of the centre of sphere distance of adjacent two described spherical convex surfaces.
Wherein, the number of the spherical convex surface that each described incident ring comprises is more than or equal to 100,
Wherein, described luminous intensity distribution exit facet is the convex globoidal corresponding with described incident reference face, revolve turnback by the outgoing camber line of two symmetries around its symmetry axis to be formed, described in two, one end of outgoing camber line is connected to described transparent area, and the other end extends to the direction away from described exit facet; Distance on benchmark camber line described in two between symmetric points increases gradually along the direction near the described plane of incidence.
Wherein, described luminous intensity distribution district has radially extended to form annular flange flange towards the direction away from described transparent area away from the edge of described transparent area.
Wherein, described transparent area is tabular.
On the other hand, the invention provides a kind of flashlight, comprise light source assembly and aforesaid light-distribution lens; Described light source assembly comprises reflector, main LED and multiple signal LED; The axis of described reflector and the central axes of described light-distribution lens, described reflector has axially relative light inputting end and bright dipping end; Its bright dipping end is towards the transparent area of described light-distribution lens; Described main LED is arranged in the light inputting end of described reflector; It is outer and be oppositely arranged with the luminous intensity distribution district of described light-distribution lens that multiple described signal LED is distributed in the bright dipping end of described reflector around the axis of described reflector.
Wherein, the diameter of described transparent area is equal to or greater than the bright dipping end diameter of described reflector.
Flashlight provided by the invention and light-distribution lens thereof, spherical convex surface is multiplely the light of signal LED can be divided into multiple region, spreads respectively, thus can reach good diffusion effect, makes the coverage of signal LED illumination wider, allows people more easily identify; Be connected between incident ring and spherical convex surface in same incident ring is connected, the light being irradiated to luminous intensity distribution district all needs just can be penetrated by spherical convex surface, thus effectively spreads light; The radius of all spherical convex surfaces is identical, the spherical convex surface of incident ring is connected to the adjacent two spherical convex surfaces being arranged in adjacent incident ring simultaneously, and it is equal to the distance of adjacent two spherical convex surfaces, spherical convex surface can be connected into hexagon mutually with around six spherical convex surface sits, the whole luminous intensity distribution plane of incidence is made to be cellular, it is uniform that all spherical convex surfaces realize on incident reference face, the light of signal LED evenly can be spread; When spherical crowning radius is determined, the surface that spherical convex surface can be made to expose is maximum, to improve diffusion effect.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the flashlight that the preferred embodiment of the present invention provides;
Fig. 2 be light-distribution lens and the signal LED of flashlight in Fig. 1 coordinate schematic diagram;
Fig. 3 is the orthographic drawing of the light-distribution lens light inlet side of flashlight in Fig. 1;
Fig. 4 is the schematic perspective view of light-distribution lens light inlet side in Fig. 3;
Fig. 5 is the schematic perspective view of light-distribution lens bright dipping side in Fig. 3;
Fig. 6 is the partial cutaway schematic view of light-distribution lens in Fig. 3;
Fig. 7 be in Fig. 1 flashlight at the hot spot figure of 1.5 meters of distant places;
Fig. 8 is that in Fig. 1, the hot spot figure 1.5 meters of distant places in light-distribution lens situation do not installed by flashlight.
Detailed description of the invention
Below in conjunction with the accompanying drawing in embodiment of the present invention, the technical scheme in embodiment of the present invention is clearly and completely described.
See also Fig. 1 to Fig. 2, a kind of flashlight that embodiment of the present invention provides, comprise light source assembly 1 and light-distribution lens 2.The transparent area 2a of light-distribution lens 2 one circle and the luminous intensity distribution district 2b arranged around the central axis of transparent area 2a.The central axis of transparent area 2a and the central axis of whole light-distribution lens 2.Light source assembly 1 comprises reflector 11, main LED12 and multiple signal LED13.The axis of reflector 11 and the central axes of transparent area 2a.Reflector 11 has axially relative light inputting end and bright dipping end.The bright dipping end of reflector 11 is towards transparent area 2a, and main LED12 is arranged in the light inputting end of reflector 11.The diameter of transparent area 2a is equal to or greater than the bright dipping end diameter of reflector 11, and the light of main LED12 is all penetrated by transparent area 2a, at the different surfaces transition position of light-distribution lens 2 forms bright ring or Crape ring after penetrating to avoid main LED12 from reflector 11.It is outer and be oppositely arranged with luminous intensity distribution district 2b that multiple signal LED13 is distributed in the bright dipping end of reflector 11 around the axis of reflector 11, and the light of multiple signal LED13 penetrates by luminous intensity distribution district 2b.
As shown in Figures 2 to 6, luminous intensity distribution district 2b has the luminous intensity distribution plane of incidence 21 and luminous intensity distribution exit facet 22 that are oppositely arranged.The light of signal LED13 can be injected into the luminous intensity distribution plane of incidence 21, then is penetrated by luminous intensity distribution exit facet 22.
As shown in Figure 6, the luminous intensity distribution plane of incidence 21 has the incident reference face 211 of a ring-type; Incident reference face 211 is cancave cambered surface, revolves turnback and is formed, axis centered by the symmetry axis of two benchmark camber lines by the benchmark camber line of two symmetries around its symmetry axis; One end of benchmark camber line is connected to transparent area 2a, the other end extends to the direction away from luminous intensity distribution exit facet 22; Distance on two benchmark camber lines between symmetric points increases gradually along the direction deviating from luminous intensity distribution exit facet 22.
As shown in Figure 3, Figure 4, the luminous intensity distribution plane of incidence 21 comprises multiple incident ring 212.Multiple incident ring 212 is sheathed is successively arranged in incident reference face 211, and adjacent two incident rings 212 are connected.Each incident ring 212 is ring-type, and each incident ring 212 comprises and multiplely to connect successively and the spherical convex surface 210 of evenly arrangement around central axis.The number of the spherical convex surface 210 that each incident ring 212 comprises is identical, and the shape size of the spherical convex surface 210 in each incident ring 212 is identical, and the radius of all spherical convex surfaces 210 is equal.
Spherical convex surface 210 is multiplely the light of signal LED13 can be divided into multiple region, spreads respectively, thus can reach good diffusion effect, and the coverage that signal LED13 is irradiated is wider, allows people more easily identify.Be connected between incident ring 212 and spherical convex surface 210 in same incident ring 212 is connected, the light being irradiated to luminous intensity distribution district 2b all needs just can be penetrated by spherical convex surface 210, thus effectively spreads light.As preferably, the number of the spherical convex surface 210 that each incident ring 212 comprises is more than or equal to 100, to carry out meticulous division to light, ensures the even of the diffusion of light.As preferably, the radius of spherical convex surface is 0.5 ~ 0.7mm.In the present embodiment, the radius of spherical convex surface 210 is 0.6mm, and the number of the spherical convex surface 210 that each incident ring 212 comprises is 150.Incident ring 212 is 8, and the total number of spherical convex surface 210 is 1200.
As shown in Figure 3, the spherical convex surface 210 of incident ring 212 is connected to the adjacent two spherical convex surfaces being arranged in adjacent incident ring simultaneously, and equal to the distance of adjacent two spherical convex surfaces.Because the radius of all spherical convex surfaces 210 is identical, spherical convex surface 210 can be connected into hexagon mutually with around six spherical convex surface sits, make the whole luminous intensity distribution plane of incidence 21 in cellular, it is uniform that all spherical convex surfaces 210 realize on incident reference face 211, the light of signal LED13 evenly can be spread.Spherical convex surface 210 is connected to the adjacent two spherical convex surfaces 210 of adjacent incident ring 212 simultaneously, and when spherical convex surface 210 radius is determined, the surface that spherical convex surface 210 can be made to expose is maximum, to improve diffusion effect.
The hot spot figure of comparison diagram 7 and Fig. 8, can find out, after installation light-distribution lens provided by the invention, flashlight obviously increases at the hot spot that 1.5 meters are formed at a distance.
As shown in Figure 6, the centre of sphere of spherical convex surface 210 is positioned on incident reference face 211, so that processing preparation, can ensure that spherical convex surface 210 is arranged neatly simultaneously.Certainly, at other embodiment, all spherical convex surfaces 210 can be overall near central axis or the direction skew certain distance away from central axis in the radial direction of luminous intensity distribution district 2b, makes the spherical convex surface 210 protruding suitable height in incident reference face 211 relatively.
In same incident ring 212, the diameter of spherical convex surface 210 is 1.1 ~ 1.4 times of the centre of sphere distance of adjacent two spherical convex surfaces 210, the radian size of spherical convex surface 210 and the size to fit of corresponding central angle thereof can be ensured, to reach preferably light distribution effect while two spherical convex surfaces 210 can be made to be connected.In the radial direction in luminous intensity distribution district, the centre of sphere between adjacent two the spherical convex surfaces 210 between adjacent incident ring 212 is identical apart from L, uniform with what realize between incident ring 212, ensures that diffusion evenly; The diameter of spherical convex surface 210 is 1.1 ~ 1.4 times of described centre of sphere distance L, to ensure that spherical convex surface 210 can protrude suitable radian size.In the present embodiment, L is 1mm.
As shown in Figure 1 and Figure 6, luminous intensity distribution exit facet 22 is the convex globoidal corresponding with incident reference face 211, revolve turnback by the outgoing camber line of two symmetries around its symmetry axis to be formed, one end of two outgoing camber lines is connected to transparent area 2a, and the other end extends to the direction away from exit facet; Distance on two benchmark camber lines between symmetric points increases gradually along the direction near the plane of incidence, the edge of transparent area 2a relative luminous intensity distribution district 2b can be made to protrude to light direction, make whole light-distribution lens 2 in peviform, exit facet is towards the surrounding of light-distribution lens 2, thus be beneficial to the light directive surrounding of signal LED13, the illumination coverage of signal LED13 can be increased further.
Luminous intensity distribution exit facet 22 is formed by outgoing arc rotating, and luminous intensity distribution exit facet 22 can be made to be smooth curved surface, in use not easily laying dust, is beneficial to clean, ensures light-out effect.
Incident reference face 211 is in smoothing junction with the plane of incidence 23 of transparent area 2a; Luminous intensity distribution exit facet 22 is in smoothing junction with the exit facet 24 of transparent area 2a, to realize seamlessly transitting between luminous intensity distribution district 2b and transparent area 2a, avoids the light penetrated from the two junction to form bright ring or Crape ring.
As shown in Figure 1, luminous intensity distribution district 2b has radially extended to form annular flange flange 25 towards the direction away from transparent area 2a away from the edge of transparent area 2a.So that whole light-distribution lens 2 and the assembly connection of flashlight miscellaneous part, mounting structure is avoided to impact luminous intensity distribution.
Transparent area 2a is tabular, and structure is simple so that processing preparation, and the light of main LED12 is normally penetrated.Herein, in other implementations, also can design the exit facet of transparent area 2a and plane of incidence shape, make it reach certain light distribution effect.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a light-distribution lens, it is characterized in that, the transparent area comprising a circle and the luminous intensity distribution district arranged around the central axis of described transparent area, described luminous intensity distribution district has the luminous intensity distribution plane of incidence and luminous intensity distribution exit facet that are oppositely arranged, and the described luminous intensity distribution plane of incidence has the incident reference face of a ring-type; Described incident reference face is cancave cambered surface, and revolve turnback by the benchmark camber line of two symmetries around its symmetry axis and formed, described in two, the symmetry axis of benchmark camber line is described central axis; One end of described benchmark camber line is connected to described transparent area, the other end extends to the direction away from described luminous intensity distribution exit facet; Distance on benchmark camber line described in two between symmetric points increases gradually along the direction deviating from described luminous intensity distribution exit facet;
The described luminous intensity distribution plane of incidence comprises multiple incident ring; Multiple described incident ring is sheathed is successively arranged in described incident reference face, and described in adjacent two, incident ring is connected; Each described incident ring is ring-type, comprises multiplely connecting successively and the spherical convex surface of evenly arrangement around described central axis; The number of the spherical convex surface that each described incident ring comprises is identical, and the shape size of the spherical convex surface in each described incident ring is identical; The radius of all described spherical convex surfaces is equal;
The spherical convex surface of described incident ring is connected to the adjacent two spherical convex surfaces being arranged in adjacent incident ring simultaneously, and equal to the distance of described adjacent two spherical convex surfaces.
2. light-distribution lens according to claim 1, is characterized in that, the centre of sphere of described spherical convex surface is positioned on described incident reference face.
3. light-distribution lens according to claim 1, is characterized in that, the plane of incidence of described incident reference face and described transparent area is in smoothing junction; The exit facet of described luminous intensity distribution exit facet and described transparent area is in smoothing junction.
4. light-distribution lens according to claim 1, is characterized in that, in same described incident ring, the diameter of described spherical convex surface is 1.1 ~ 1.4 times of the centre of sphere distance of adjacent two described spherical convex surfaces.
5. light-distribution lens according to claim 1, is characterized in that, the number of the spherical convex surface that each described incident ring comprises is more than or equal to 100.
6. light-distribution lens according to claim 1, it is characterized in that, described luminous intensity distribution exit facet is the convex globoidal corresponding with described incident reference face, revolve turnback by the outgoing camber line of two symmetries around its symmetry axis to be formed, described in two, one end of outgoing camber line is connected to described transparent area, and the other end extends to the direction away from described exit facet; Distance on benchmark camber line described in two between symmetric points increases gradually along the direction near the described plane of incidence.
7. light-distribution lens according to claim 1, is characterized in that, described luminous intensity distribution district has radially extended to form annular flange flange towards the direction away from described transparent area away from the edge of described transparent area.
8. light-distribution lens according to claim 1, is characterized in that, described transparent area is tabular.
9. a flashlight, is characterized in that, comprises light source assembly and the light-distribution lens described in any one of claim 1 to 8; Described light source assembly comprises reflector, main LED and multiple signal LED; The axis of described reflector and the central axes of described light-distribution lens, described reflector has axially relative light inputting end and bright dipping end; Its bright dipping end is towards the transparent area of described light-distribution lens; Described main LED is arranged in the light inputting end of described reflector; It is outer and be oppositely arranged with the luminous intensity distribution district of described light-distribution lens that multiple described signal LED is distributed in the bright dipping end of described reflector around the axis of described reflector.
10. flashlight according to claim 9, is characterized in that, the diameter of described transparent area is equal to or greater than the bright dipping end diameter of described reflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310634499.7A CN104676280B (en) | 2013-11-30 | 2013-11-30 | A kind of flashlight and its light-distribution lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310634499.7A CN104676280B (en) | 2013-11-30 | 2013-11-30 | A kind of flashlight and its light-distribution lens |
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| Publication Number | Publication Date |
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| CN104676280A true CN104676280A (en) | 2015-06-03 |
| CN104676280B CN104676280B (en) | 2019-04-16 |
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| CN201310634499.7A Active CN104676280B (en) | 2013-11-30 | 2013-11-30 | A kind of flashlight and its light-distribution lens |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050152153A1 (en) * | 2004-01-13 | 2005-07-14 | Koito Manufacturing Co., Ltd. | Vehicular lamp |
| US20060044808A1 (en) * | 2004-09-02 | 2006-03-02 | Erco Leuchten Gmbh | Light fixture for illuminating building surfaces or parts thereof |
| US20100142208A1 (en) * | 2008-12-09 | 2010-06-10 | Phoenix Electric Co., Ltd. | Reflector for use in light emitting device and light emitting device using the same |
| CN102878526A (en) * | 2012-10-30 | 2013-01-16 | 成都欧盛光电科技有限公司 | Light-emitting diode (LED) light-distributing lens |
| CN203068422U (en) * | 2013-02-28 | 2013-07-17 | 成都欧盛光电科技有限公司 | Lens for LED lighting |
-
2013
- 2013-11-30 CN CN201310634499.7A patent/CN104676280B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050152153A1 (en) * | 2004-01-13 | 2005-07-14 | Koito Manufacturing Co., Ltd. | Vehicular lamp |
| US20060044808A1 (en) * | 2004-09-02 | 2006-03-02 | Erco Leuchten Gmbh | Light fixture for illuminating building surfaces or parts thereof |
| US20100142208A1 (en) * | 2008-12-09 | 2010-06-10 | Phoenix Electric Co., Ltd. | Reflector for use in light emitting device and light emitting device using the same |
| CN102878526A (en) * | 2012-10-30 | 2013-01-16 | 成都欧盛光电科技有限公司 | Light-emitting diode (LED) light-distributing lens |
| CN203068422U (en) * | 2013-02-28 | 2013-07-17 | 成都欧盛光电科技有限公司 | Lens for LED lighting |
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| Publication number | Publication date |
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| CN104676280B (en) | 2019-04-16 |
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