KR20200049042A - Apparatus and method for manufacturing free form lens - Google Patents

Abstract

An object of the present invention is to provide an apparatus and a method for manufacturing free-form lens which implement target light distribution by constructing the lens surface corresponding to each road surface in the free-form surface by mapping the light distribution of a light source and the road surface in an m×n matrix. To this end, the present invention includes a curvature generating module unit in which a plurality of jigs made of an electroactive polymer material are arranged in the m×n matrix. In addition, the jig is made so that curvature of the surface is deformed to be different from each other according to a supplied electrical signal. Therefore, the present invention configures the lens surface corresponding to each road surface in a form of the free-form surface by matching the light distribution of the light source and the road surface with the m×n matrix. Therefore, there is an advantage that unnecessary light distribution can be excluded and targeted light distribution can be implemented.

Description

Apparatus and method for manufacturing free-form lenses {APPARATUS AND METHOD FOR MANUFACTURING FREE FORM LENS}

The present invention relates to an apparatus and a method for manufacturing a free-form lens, and more specifically, a light distribution distribution of a light source and a road surface are mapped to m × n matrices to form a lens surface corresponding to each road surface in a free-form surface. The present invention relates to an apparatus and method for manufacturing a freeform lens that implements light distribution.

In general, on a road through which a vehicle passes, a lighting device for road lighting should be installed to illuminate the road to ensure visibility of a driver using the road at night.

Such a road lighting fixture is a lamppost-type street lamp, which is installed at a certain height on the edge outside the shoulder of the road, and is configured so that light emitted from the light source shines in a certain direction against the road.

1 is an exemplary view showing a lighting fixture and a distribution of light according to the prior art, the light output from the lighting fixture 10 is irradiated to the road 20 is made to form an arbitrary light distribution (30).

However, the lighting device according to the related art has a problem in that the light output from the light source cannot be blocked from being irradiated to other non-areas 40, 41, and 42 other than the light distribution area 30 of the preset road.

In addition, the distribution of light to the unset area causes a problem of civil complaints due to light pollution in places such as residential areas or farmland.

In addition, Korean Registered Patent Registration No. 10-1191406 (invention name: LED luminaire having a light distribution pattern of incandescent lamp) and Korean Registered Patent Registration No. 10-1082548 (invention name: crosswalk light) are respectively reflected. Although a method of implementing a light distribution pattern using a part and a reflector is disclosed, such a conventional technique has a problem in that a manufacturing cost is high as the use of a reflector or a reflector, and the lighting range due to the use of the reflector is excessively reduced.

1. Korean Registered Patent Registration No. 10-1082548 (Invention name: lighting for pedestrian crossing) 2. Korean Patent Publication No. 10-2014-0128474 (Invention name: array lens processing method and apparatus)

In order to solve these problems, the present invention is a free-form lens manufacturing apparatus and method for realizing target light distribution by constructing a lens surface corresponding to each road surface in a free-form surface by mapping the light distribution of the light source and the road surface in an m × n matrix. It aims to provide.

In order to achieve the above object, the present invention includes a curvature generating module unit in which a plurality of jigs made of an electroactive polymer material are arranged in an m × n matrix form, and the jigs have different curvatures on the surface according to the supplied electrical signal. It is characterized by being made to be deformed.

In addition, the apparatus for manufacturing a free-form lens according to the present invention is a curvature that calculates curvature data of an individual lens surface through a curvature calculation program of a pre-stored lens in response to a light distribution pattern irradiated into a light distribution region divided into m × n matrix shapes. A data generator; A control unit for outputting an electrical signal corresponding to the curvature data of the individual lens surfaces calculated by the curvature data generation unit; And a curvature generation module unit in which a plurality of jigs made of an electroactive polymer material are arranged in an m × n matrix form and are activated according to an electric signal output from the control unit to deform the surface curvature of the jig. .

In addition, the curvature generation module according to the present invention includes a jig having an electroactive portion made of an electroactive polymer material; And it characterized in that it comprises an electrode portion for supplying an electrical signal to the electro-active portion.

In addition, the electroactive portion according to the present invention is characterized by consisting of a ferroelectric electroactive polymer material.

In addition, in the present invention, a) when the light distribution pattern data to be irradiated to the road surface is input to the curvature data generation unit, the curvature data generation unit divides the road surface into an m × n matrix light distribution area, and is irradiated with the divided light distribution area. Simulating a light distribution pattern; b) calculating the curvature data of the individual lens surfaces corresponding to the light distribution region through the curvature calculation program of the pre-stored lens based on the simulation result; c) the control unit outputting an electrical signal corresponding to the calculated curvature data of the individual lens surface to the curvature generation module unit; d) when the surface curvature of the curvature generation module unit is deformed by being activated according to the electrical signal output from the control unit, manufacturing a molding unit corresponding to the surface shape of the curvature generation module unit; And e) manufacturing a lens unit using the manufactured molding unit.

In addition, the curvature generation module of step d) according to the present invention is composed of a plurality of jigs arranged in an m × n matrix, and the surface curvature of the jigs is the same or different.

In addition, the lens unit according to the present invention is characterized in that the inclined surface is formed such that the exit surface of the lens has either the same slope or different slopes around an arbitrary reference point (P).

In addition, the lens unit according to the present invention is configured to configure the shape of the incidence surface of the lens in a rectangular oval shape, and preferably, the lens unit is configured to be eccentric to the incident surface of the lens.

The present invention has an advantage in that the light distribution of the light source and the road surface are mapped to m × n matrices, so that lens surfaces corresponding to each road surface are formed in a free-form surface to exclude unnecessary light distribution and realize targeted light distribution.

In addition, the present invention has the advantage of being able to manufacture a lens that provides various light distribution patterns according to the installation environment, so that the light output from the light source can be realized without loss of light.

1 is an exemplary view showing a lighting fixture and a distribution of light according to the prior art.
Figure 2 is a block diagram showing the configuration of a free-form lens manufacturing apparatus according to the present invention.
Figure 3 is an exemplary view showing a curvature data generation process of the free-form lens manufacturing apparatus according to the present invention.
4 is a perspective view showing a curvature generating jig of a free-form lens manufacturing apparatus according to the present invention.
5 is a cross-sectional view showing the structure of the curvature generating jig according to FIG. 4.
Figure 6 is a flow chart showing the manufacturing process of the free-form lens according to the present invention.
7 is a cross-sectional view showing the structure of a lens manufactured using a free-form lens manufacturing apparatus according to the present invention.
8 is a plan view showing the lens according to FIG. 7;

Hereinafter, preferred embodiments of the apparatus and method for manufacturing a free-form lens according to the present invention will be described in detail with reference to the accompanying drawings.

In this specification, the expression that a part “includes” a certain component does not exclude other components, but may mean that other components may be further included.

In addition, terms such as "‥ unit", "‥ group", "‥ module" mean a unit that processes at least one function or operation, which can be divided into hardware or software, or a combination of the two.

Figure 2 is a block diagram showing the configuration of a free-form lens manufacturing apparatus according to the present invention, Figure 3 is an exemplary view showing a curvature data generation process of the free-form lens manufacturing apparatus according to the present invention, Figure 4 is according to the present invention It is a perspective view showing the curvature generating jig of the free-form lens manufacturing apparatus, and FIG. 5 is a cross-sectional view showing the structure of the curvature generating jig according to FIG. 4.

2 to 5, the apparatus 100 for manufacturing a free-form lens according to the present invention has a plurality of jigs 130a, 130b, and 130c made of an electroactive polymer material arranged in an m × n matrix form It includes a generating module unit 130, the jig (130a, 130b, 130c) is made to be different from the curvature of the surface according to the supplied electrical signal, the curvature data generating unit 110, and the control unit 120 And, it comprises a curvature generation module unit 130.

The curvature data generation unit 110 divides the road surface into a light distribution area 300 of an m × n matrix when data on a light distribution pattern to be irradiated is input to the road surface, and is irradiated to the divided light distribution area 300. The light distribution pattern is simulated through a pre-stored light distribution pattern simulation program to grasp the light distribution characteristics.

In addition, the curvature data generation unit 110 is based on the simulation result of the light distribution pattern simulation program, an individual lens surface for forming a light distribution pattern corresponding to the light distribution region 300 through a pre-stored curvature calculation program of the lens surface. Calculate the curvature data.

The control unit 120 outputs an electrical signal corresponding to the curvature data of the individual lens surfaces calculated by the curvature data generation unit 110 to the curvature generation module unit 130.

That is, when the lens surface forms a certain curvature, the control unit 120 controls the curvature generation module 130 to supply a preset voltage or current corresponding to the curvature to be formed.

The curvature generation module unit 130 is activated by a plurality of jigs (130a, 130b, 130c) made of an electroactive polymer material, and an electrical signal output from the control unit 120, the jig (130a, 130b, 130c) As a configuration to deform the surface curvature of, it comprises a jig (130a, 130b, 130c), and the electrode unit (132, 133, 134) for supplying an electrical signal to the jig (130a, 130b, 130c).

The jig (130a, 130b, 130c) is made of jig 1 (130a), jig 2 (130b) ‥ jig n, the jig 1, jig 2 to jig n are arranged in m × n matrix form, preferably It is formed in the same way as the m × n light distribution region 300 of the road surface input to the curvature data generation unit 110.

The jig 1, jig 2 to jig n (130a, 130b, 130c) are respectively provided with an electroactive portion 135 made of an electroactive polymer material.

The electroactive part 135 is a member made of an electroactive polymer material that operates on the principle of ferroelectric behavior, and is made of a gel that changes the shape of the surface when a voltage is applied, for example, PVDF ( Polyvinylidene fluoride), but is not limited thereto, and may also be constructed using a general-purpose polymer such as polyvinyl chloride (PVC), high density polyethylene, and low density polyethylene.

In addition, the electro-active portion 135 is arrayed and installed on the circuit board portion 131 to be electrically connected to the electrode portions 132, 133, and 134.

The electrode parts 132, 133, and 134 include a first electrode part 132, a second electrode part 133, and a third electrode part 134, and the first to third electrode parts 132 , 133, 134 supplies an electrical signal to the electroactive portion 135 so that the surface shape of the electroactive portion 135 can be variously modified.

The first electrode part 132 and the second electrode part 133 are disposed to face each other with respect to the electroactive part 135, and the third electrode part 134 is located below the electroactive part 135. Is installed.

The first electrode part 132 and the second electrode part 133 may be formed with a “+” voltage, and the third electrode part 134 may be configured with a “-” voltage, and the first electrode part The 132 and the second electrode parts 133 are configured such that the same voltage is formed or voltages of different sizes are formed, so that the voltages supplied through the first to third electrode parts 132, 133, and 134 are applied. By doing so, the surface of the electroactive portion 135 is deformed.

That is, when the "+" voltage of the same size is supplied to the first electrode part 132 and the second electrode part 133, for example, the surface of the electroactive part 135 is deformed into a convex shape having a symmetrical structure, When the “+” voltages of different sizes are supplied to the first electrode part 132 and the second electrode part 133, for example, the surface of the electroactive part 135 has an asymmetric structure through the difference in the voltage. It can be deformed into a convex shape.

Through this configuration, the first electrode portion 132 ', the second electrode portion 133', and the third electrode portion 134 'installed in the jig 2 130b may be individually deformed in the surface of the jig 2 130b. By controlling, the jig 1, jig 2 to jig n installed in the curvature generation module unit 130 may provide individual curvatures subdivided into m × n matrices.

6 is a flowchart illustrating a manufacturing process of a free-form lens according to the present invention, and a manufacturing process of the free-form lens according to the present invention will be described with reference to FIGS. 2 to 6.

2 to 6, when the light distribution pattern data to be irradiated on the road surface is input to the curvature data generation unit 110, the curvature data generation unit 110 may divide the road surface with an m × n matrix light distribution area 300 ), And simulate the light distribution pattern to be individually irradiated to the divided light distribution area 300 (S100).

After performing the step S100, the curvature data generation unit 110 calculates curvature data of a lens surface required for formation of the obtained light distribution pattern based on result data of the light distribution pattern obtained through the simulation. , Calculate curvature data of individual lens surfaces for forming a light distribution pattern corresponding to the light distribution region 300 through a curvature calculation program of a pre-stored lens (S200).

After performing the step S200, the controller 120 stores an electrical signal value (for example, a voltage value) corresponding to the calculated curvature data of the individual lens surface in a lookup table (LUT) stored in a memory (not shown). Search and output the searched electrical signal value to the curvature generation module 130 (S300).

The electrical signal values output in step S300 are the first electrode units 132 and 132 ', the second electrode units 133 and 133', and the third electrode units 134 and 134 'of the curvature generation module unit 130. Jig 1 (130a) arranged in m × n matrix form through is transmitted to the jig 2 (130b) and the jig n (130c), respectively, to activate the electroactive portion 135 to thereby activate the jig 1 of the curvature generation module portion 130 , The surface curvature of jig 2 to jig n (130a, 130b, 130c) is deformed.

At this time, the surface curvature of the jig 1, jig 2 to jig n (130a, 130b, 130c) may be the same or different.

When the surface curvatures are different, the surface may be deformed into an asymmetric shape.

When the surface curvature of the jig 1, jig 2 to jig n (130a, 130b, 130c) of the curvature generation module unit 130 is deformed, the molding unit 400 corresponding to the surface shape of the curvature generation module unit 130 Prepare (S400).

Thereafter, a lens unit 500 having a plurality of individual lenses is manufactured using the molding unit 400 manufactured in step S400 (S500).

On the other hand, the lens unit 500 through the manufacturing process, the exit surfaces 510a, 510b, 510c of the individual lenses form the same slope around an arbitrary reference point P, or different slopes 511 , 512) may be formed.

In addition, the lens unit 500 may be configured such that the incident surfaces 520a, 520b, and 520c of the individual lenses have a rectangular oval shape as shown in FIGS. 7 and 8, and may be configured to be eccentric on one side. .

In addition, the lens unit 500 may be configured to control light distribution by adjusting the focal length of the ellipse and the length of the main axis of the incident surfaces 520a, 520b, and 520c of the individual lenses. The light can be adjusted, and light distribution in a certain direction can be controlled in a short axis direction.

In addition, the lens unit 500 is configured to maximize the difference between the major axis and the minor axis of the incident surfaces 520a, 520b, and 520c of the individual lenses so that the light output from the light source unit 200 enters the major axis direction and the refractive angle is maximized. The light incident in the short axis direction may be configured to irradiate a wide range in a certain direction by minimizing the refractive angle.

In addition, the lens unit 500 is the light incident in the long axis direction of the incidence surface (520a, 520b, 520c) of the first inclined surface 511 of the gentle slope and the relatively inclined than the first inclined surface 511 The second inclined surface 512 is to be refracted, and the first inclined surface 511 has a large value of refraction angle so that it can be irradiated in a wide area compared to a relatively short rear direction in the anterior direction of the lens unit 500 Can be configured.

In addition, the light refracted through the second inclined surface 512 may be configured to have a large refraction angle in which the refracted light is refracted to the bottom surface so that no rear light is generated.

Therefore, the light distribution of the light source and the road surface are mapped to m × n matrices to form a lens surface corresponding to each road surface in the form of a free-form surface, excluding unnecessary light distribution and realizing the target light distribution, and various light distribution patterns depending on the installation environment Since it is possible to manufacture a lens providing a light, the target light distribution can be realized without loss of light output from the light source.

As described above, although described with reference to preferred embodiments of the present invention, those skilled in the art will variously modify and change the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You can understand that you can.

In addition, the drawing numbers described in the claims of the present invention are merely for clarity and convenience of explanation, and are not limited thereto. In the course of explaining the embodiment, the thickness of the lines or the size of components shown in the drawings, etc. May be exaggerated for clarity and convenience of description, and the above-described terms are terms defined in consideration of functions in the present invention, and may be changed according to the intention or custom of the user or operator. Should be made based on the contents throughout this specification.

100: manufacturing apparatus 110: curvature data generation unit
120: control unit 130: curvature generation module unit
130a: Jig 1 130b: Jig 2
130c: jig n 131: circuit board portion
132, 132 ': first electrode portion 133, 133': second electrode portion
134, 134 ': third electrode portion 135, 135': electroactive portion
135a, 135'a: Electroactive surface
200: light source unit 300: light distribution area
400: molding unit 500: lens unit
510a, 510b, 510c: lens unit exit surface
511: first slope 512: second slope
520a, 520b, 520c: lens unit incident surface

Claims (9)

A plurality of jigs (130a, 130b, 130c) made of an electroactive polymer material includes a curvature generating module unit 130 arranged in an m × n matrix form,
The jig (130a, 130b, 130c) is a free-form lens manufacturing apparatus characterized in that the curvature of the surface is made to be deformed differently according to the supplied electrical signal. According to claim 1,
The free-form lens manufacturing apparatus is a curvature data generation unit that calculates curvature data of an individual lens surface through a curvature calculation program of a pre-stored lens in response to a light distribution pattern irradiated to a light distribution region 300 divided in m × n matrix form. (110);
A control unit 120 for outputting an electrical signal corresponding to the curvature data of the individual lens surfaces calculated by the curvature data generation unit 110 to the curvature generation module unit 130; And
A plurality of jigs (130a, 130b, 130c) made of an electroactive polymer material are arranged in an m × n matrix form, and are activated according to an electrical signal output from the control unit 120 so that the jigs (130a, 130b, 130c) Free form lens manufacturing apparatus, characterized in that it comprises a curvature generation module unit 130 that allows the surface curvature to be deformed. According to claim 2,
The curvature generating module 130 includes a jig 130a having an electroactive portion 135 made of an electroactive polymer material; And
Free-form lens manufacturing apparatus, characterized in that it comprises an electrode portion (132, 133, 134) for supplying an electrical signal to the electro-active portion (135). The method of claim 3,
The electroactive portion 135 is a free-form lens manufacturing apparatus characterized in that it is made of a ferroelectric electroactive polymer material. a) When the light distribution pattern data to be irradiated to the road surface is input to the curvature data generation unit 110, the curvature data generation unit 110 divides the road surface into an m × n matrix light distribution area 300, and the divided Simulating a light distribution pattern to be irradiated to the light distribution area 300;
b) the curvature data generating unit 110 calculating curvature data of individual lens surfaces corresponding to the light distribution region 300 through a curvature calculation program of a pre-stored lens based on a simulation result;
c) the control unit 120 outputting an electrical signal corresponding to the calculated curvature data of the individual lens surface to the curvature generation module unit 130;
d) When the surface curvature of the curvature generation module unit 130 is deformed by being activated according to the electrical signal output from the control unit 120, the molding unit 400 corresponding to the surface shape of the curvature generation module unit 130 Preparing a; And
e) Free-form lens manufacturing method comprising the step of manufacturing the lens unit 500 using the manufactured molding unit 400. The method of claim 5,
The curvature generation module 130 of step d) consists of a plurality of jigs 130a, 130b, 130c arranged in an m × n matrix, and the surface curvatures of the jigs 130a, 130b, 130c are the same or Or a free-form lens manufacturing method characterized in that made differently. The method of claim 5,
The lens unit 500 is characterized by forming the inclined surfaces 511 and 512 such that the exit surfaces 510a, 510b, and 510c of the lens have either the same slope or different slopes around an arbitrary reference point P Free-form lens manufacturing method. The method of claim 7,
The lens unit 500 is a free-form lens manufacturing method characterized in that the shape of the incidence surface (520a, 520b, 520c) of the lens is configured in a rectangular oval shape. The method of claim 7,
The lens unit 500 is a free-form lens manufacturing method characterized in that the incidence surface (520a, 520b, 520c) of the lens is configured to be eccentric on one side.

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