CN216346067U - Lens structure and lamp - Google Patents

Abstract

The application discloses lens structure and lamps and lanterns, this lens structure are used for setting up the light path at least one lamp pearl, lens structure includes: the lamp bead-containing lens comprises a lens body, a lens body and a lamp bead-containing lens, wherein the lens body is provided with a placing cavity for placing the lamp bead, the cavity wall of the placing cavity is used as an incident surface, the outer surface of the lens body is used as a light-emitting surface, and the effective light-emitting angle of the lens body is larger than 60 degrees; the incident surface is symmetrically arranged on the basis of a long axis, and the horizontal length of the incident surface in the long axis direction is greater than or equal to 2 times of the width of the lamp bead. The embodiment of the application can enable the filter structure to be suitable for lamps with different lamp bead quantities and arrangement modes, and improves the universality of the filter structure, so that the development cost of lamp products is reduced.

Description

Lens structure and lamp

Technical Field

The application relates to the field of lighting, in particular to a lens structure and a lamp.

Background

In recent years, with the rapid development of LED light sources in the field of lighting, and with the advantages of long service life, low energy consumption, environmental protection, etc., LED light sources have been accepted by more and more people and widely applied in the field of road lighting, and at present, LED street lamps have generally replaced traditional high-voltage sodium lamps. The optical system is the most important component of the LED street lamp, and not only needs to satisfy the lighting requirement of the road, but also needs to have the advantages of higher light transmittance and material cost for more energy saving.

At present, an optical system of an LED street lamp generally employs a secondary optical lens to perform light distribution optimization on light emitted by the LED lamp, so as to achieve the effects of higher irradiation uniformity and wider irradiation distribution area when the light is irradiated to a target position. However, the actual lighting situation is complex, for example, when the lighting system is applied to a street lamp, the road situation is complex, a expressway, a secondary trunk and a branch are provided, different numbers of lamp bead schemes need to be applied to the whole lamp, different requirements are provided for light effects, a lamp manufacturer often needs to develop multiple types of lenses with specifications in one-to-one correspondence according to the number and the specifications of the lamp beads to meet the requirements of the lamp manufacturer, the universality of the lenses is poor, and the problems of long development cycle, high development cost and the like of the whole lamp product are caused.

SUMMERY OF THE UTILITY MODEL

The application provides a lens structure and lamps and lanterns, its lens structure has better commonality to the lamp pearl scheme of different quantity, has solved the higher problem of development cost that lamps and lanterns product leads to because of the commonality is poor.

In order to solve the above problem, an embodiment of the present application provides a lens structure, which is used for being disposed on a light path of at least one lamp bead, the lens structure includes:

the lamp bead-containing lens comprises a lens body, a lens body and a lamp bead-containing lens, wherein the lens body is provided with a placing cavity for placing the lamp bead, the cavity wall of the placing cavity is used as an incident surface, the outer surface of the lens body is used as a light-emitting surface, and the effective light-emitting angle of the lens body is larger than 60 degrees;

the incident surface is symmetrically arranged on the basis of a long axis, and the horizontal length of the incident surface in the long axis direction is greater than or equal to 2 times of the width of the lamp bead.

In one embodiment, the lens structure further includes:

the installation part is arranged on the periphery of the mirror body and used for fixing the mirror body.

In one embodiment, the lens structure is a polarized lens.

In one embodiment, the number of the lamp beads is two or more, at most N rows of the lamp beads are arranged in parallel in the long axis direction, and the maximum total width of the corresponding lamp beads after the arrangement is W;

the horizontal length of the incident surface in the long axis direction is greater than or equal to the maximum total width W of the lamp bead in the long axis direction.

In an embodiment, if an angle from the central point of the installation cavity to a preset point of the incident surface is a, and an angle from the central point of the lamp bead to the preset point is a ', a difference between a' and a is ± 5%.

In an embodiment, if an included angle between the incident light from the central point of the installation cavity to a preset point of the incident surface and the normal corresponding to the preset point is B, and an included angle between the incident light from the central point of the lamp bead to the preset point and the normal corresponding to the preset point is B ', a difference between B' and B is ± 5%.

The application also discloses a luminaire, the luminaire includes:

at least one lamp bead; and

the lens structure is correspondingly arranged on the light path of the at least one lamp bead;

wherein the lens structure is as described above.

Therefore, the lens structure and the lamp in the embodiment of the application have the advantages that the design of the incident surface is improved, the horizontal length of the incident surface in the long axis direction is larger than or equal to 2 times the width of the lamp beads, so that the filter structure is suitable for lamps with different lamp bead quantities and arrangement modes, the universality of the filter structure is improved, and the development cost of lamp products is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a lens structure provided in the prior art.

Fig. 2 is a schematic structural diagram of a lens structure provided in an embodiment of the present application.

Fig. 3 is another schematic structural diagram of a lens structure according to an embodiment of the present disclosure.

Fig. 4 is a schematic structural diagram of a lamp provided in the embodiment of the present application.

Detailed Description

The following detailed description of the preferred embodiments of the present application, taken in conjunction with the accompanying drawings, will make the advantages and features of the present application more readily appreciated by those skilled in the art, and thus will more clearly define the scope of the invention.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1, a prior art lens structure of the present application is shown.

The lens structure 20 is installed on the light path of the lamp bead 10, and includes an incident surface 21 and an exit surface 22, and a general lens design mode will determine the number of 10 lamp beads (generally 1 or 4) basically, and designs a lens according to the lamp bead 10, wherein the related formula is as follows:

sin (b) ═ N (air) ═ Sin (C1) × N (pc) formula 1

Sin (C2) × N (pc) ═ Sin (d) × N (air) formula 2

Given an outgoing ray angle a, a target outgoing ray angle G, N (air) 1, N (pc) 1.585, where N is a refractive index of a different material and pc is a lens material; wherein, the angle B is an included angle between an incident ray from the central point of the installation cavity 30 to a preset point of the incident surface 21 and a normal L2 corresponding to the preset point; the angle C1 is an included angle between the outgoing light of the preset point of the incident surface 21 and the normal L2 corresponding to the preset point; the angle C2 is an included angle between the incident light of the preset point of the exit surface 22 and the normal L1 corresponding to the preset point; the angle D is the angle between the outgoing light ray of the preset point of the outgoing surface 22 and the normal L1 corresponding to the preset point.

By controlling the optimized angle E (the angle of the normal L2 to a certain point of the incident surface 21) and the angle F (the angle of the normal L1 to a certain point of the incident surface 21 to the exit surface 22), and then by newton's method, the data of each calculated point are combined to form a final NURBS (non-uniform rational B-spline).

The lens design can ensure that the emergent angle of emergent light passing through the incident surface 21 and the emergent surface 22 meets the requirement of the lamp, thereby ensuring the lighting effect of the lamp. However, since the required range of the exit angle is limited, for example, only for the exit range of about 80 °, if the number and size of the lamp beads 10 are adjusted, the exit angle of the light ray exceeds the exit range. Therefore, when products with different numbers of lamp beads 10 are manufactured each time, the lens structure 20 needs to be adjusted individually, so as to meet the lighting requirements of the lamp.

Wherein, this lamp pearl 10 can be the LED lamp pearl 10 that this field is commonly used, and specific lamp pearl 10 model can be decided according to actual conditions.

Referring to fig. 2, a structure of a lamp provided by the present application is shown in the figure.

The lamp comprises two lamp beads 10, and certainly, in addition, one or more lamp beads 10 can be included, and the specific number can be determined according to the needs. Wherein, a lens structure 20 is placed on the light path of this lamp pearl 10, and the incident plane 11 of this lens structure 20 is located the top of lamp pearl 10.

In conjunction with fig. 3, there is shown a structure of a lens structure 20 provided in an embodiment of the present application.

As shown in fig. 3, the lens structure 20 includes a lens body, the lens body is provided with a placement cavity 30 for placing the lamp bead 10, a cavity wall of the placement cavity 30 is used as an incident surface 11, an outer surface of the lens body is used as a light exit surface, and an effective light exit angle of the lens body is greater than 60 degrees, so as to meet the requirement of the lamp on the light exit angle. It can be understood that the light exit angle can be designed according to the requirements of the lamp, and the specific exit angle and the angle range are not limited herein. The incident surface 11 of the mirror body is symmetrically arranged based on a long axis, and the horizontal length 211 of the incident surface 11 in the long axis direction is greater than or equal to 2 times of the width of the lamp bead 10.

In an embodiment, the lens structure 20 further includes a mounting portion disposed on a periphery of the lens body for fixing the lens body. The mounting portion can ensure that the relative position between the lens structure 20 and the lamp bead 10 is maintained in a relatively stable range.

With reference to fig. 1, after the horizontal length 211 of the incident surface 11 in the long axis direction is increased as much as possible, when two or more groups of lamp beads 10 are arranged side by side, the difference between the angle a 'of the outgoing light of the lamp beads 10 at different positions in fig. 3 and the angle a of the outgoing light in fig. 1 is further reduced, when the difference is reduced to a preset value, the angle B' can also be close to B, thereby reducing the position deviation caused by the quantity and the specification of different lamp beads 10, ensuring that the position tolerance of the lens structure 20 to the lamp beads 10 is large enough, and further improving the universality of the lens structure 20.

In an embodiment, the number of the lamp beads 10 is two or more, and at most N rows of the lamp beads 10 are arranged in parallel in the long axis direction, the maximum total width of the corresponding lamp beads 10 after being arranged in parallel is W, and the horizontal length 211 of the incident surface 11 in the long axis direction is greater than or equal to the maximum total width W of the lamp beads 10 in the long axis direction.

Specifically, as shown in fig. 3, the lamp beads 10 may be arranged in two rows, and the horizontal length 211 of the incident surface 11 of the lens structure 20 in the long axis direction is designed to be more than twice the width of the lamp beads 10 as much as possible, so that when the lamp beads 10 in different numbers are arranged in one row or two rows, the position tolerance of the lens structure 20 to the lamp beads 10 can be large enough, and when the lens structure 20 can be applied to the lamp beads 10 in different numbers, the light emitting effect thereof still maintains a relatively high level.

In an embodiment, if the angle from the central point of the installation cavity 30 to the preset point of the incident surface 11 is a, and the angle from the central point of the lamp bead 10 to the preset point is a ', the difference between a' and a is ± 5%; in another embodiment, if an included angle between the incident light from the central point of the installation cavity 30 to a preset point of the incident surface 11 and the normal corresponding to the preset point is B, and an included angle between the incident light from the central point of the lamp bead 10 to the preset point and the normal corresponding to the preset point is B ', a difference between B' and B is ± 5%. The difference value limitation can ensure that when the lamp beads 10 are positioned at the center, or the lamp beads 10 are positioned at other positions due to the quantity and arrangement change, the light emitting effect still meets the requirement of the lamp.

Referring to fig. 4, a structure of a lamp provided in an embodiment of the present application is shown.

This lamps and lanterns 100 includes at least one lamp pearl 1 and at least one lens structure 2, and this one lens structure 2 corresponds the setting on the light path of at least one lamp pearl 1.

The lens structure 2 comprises a lens body, the lens body is provided with a placement cavity for placing the lamp beads 1, the cavity wall of the placement cavity is used as an incident surface, the outer surface of the lens body is used as a light emergent surface, and the effective light emergent angle of the lens body is larger than 60 degrees so as to meet the requirement of the lamp 100 on the light emergent angle. It is understood that the light exit angle can be designed according to the requirements of the lamp 100, and the specific exit angle and the range of angles are not limited herein. The incident plane of the mirror body is symmetrically arranged on the basis of a long axis, and the horizontal length of the incident plane in the direction of the long axis is greater than or equal to 2 times of the width of the lamp bead 1.

It should be noted that, the specific structural details and description of the lens structure 2 may refer to the lens structure 2 in any one of the embodiments shown in fig. 2 to 3, and are not repeated herein.

The lamp 100 can enable the filter structure to be suitable for the lamp 100 with different lamp bead 1 numbers and arrangement modes, and the universality of the filter structure is improved, so that the development cost of the lamp 100 product is reduced.

The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present application within the knowledge of those skilled in the art.

Claims (7)

1. The utility model provides a lens structure for the setting is in the light path of at least one lamp pearl, its characterized in that, lens structure includes:

the lamp bead-containing lens comprises a lens body, a lens body and a lamp bead-containing lens, wherein the lens body is provided with a placing cavity for placing the lamp bead, the cavity wall of the placing cavity is used as an incident surface, the outer surface of the lens body is used as a light-emitting surface, and the effective light-emitting angle of the lens body is larger than 60 degrees;

the incident surface is symmetrically arranged on the basis of a long axis, and the horizontal length of the incident surface in the long axis direction is greater than or equal to 2 times of the width of the lamp bead.

2. The lens structure of claim 1, further comprising:

the installation part is arranged on the periphery of the mirror body and used for fixing the mirror body.

3. The lens structure of claim 1, wherein the lens structure is a polarized lens.

4. The lens structure of claim 1, wherein the number of the lamp beads is two or more, and at most N rows of the lamp beads are arranged in parallel in the long axis direction, and the maximum total width of the corresponding lamp beads after being arranged in parallel is W;

the horizontal length of the incident surface in the long axis direction is greater than or equal to the maximum total width W of the lamp beads in the long axis direction.

5. The lens structure of claim 1, wherein if the angle from the central point of the mounting cavity to the predetermined point of the incident surface is A and the angle from the central point of the lamp bead to the predetermined point is A ', the difference between A' and A is ± 5%.

6. The lens structure of claim 1, wherein if an angle between a normal line corresponding to a predetermined point of the incident surface and an incident light from a center point of the installation cavity is B, and an angle between a normal line corresponding to the predetermined point and an incident light from a center point of the lamp bead to the predetermined point is B ', the difference between B' and B is ± 5%.

7. A light fixture, the light fixture comprising:

at least one lamp bead; and

the lens structure is correspondingly arranged on the light path of the at least one lamp bead;

wherein the lens structure is as claimed in any one of claims 1 to 6.

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