KR101643978B1 - Lens optical system for light distribution control of square - Google Patents

Lens optical system for light distribution control of square Download PDF

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KR101643978B1
KR101643978B1 KR1020150069418A KR20150069418A KR101643978B1 KR 101643978 B1 KR101643978 B1 KR 101643978B1 KR 1020150069418 A KR1020150069418 A KR 1020150069418A KR 20150069418 A KR20150069418 A KR 20150069418A KR 101643978 B1 KR101643978 B1 KR 101643978B1
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South Korea
Prior art keywords
light distribution
lens
optical system
lens structures
light
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KR1020150069418A
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Korean (ko)
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노명재
현진우
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노명재
현진우
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    • 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
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)

Abstract

[0001] The present invention relates to a lens optical system for controlling a square light distribution control by controlling and a square light distribution to be a light source for a line-type LED light source arranged in a multi-band structure, wherein four transparent lens structures having the same shape are fused Wherein each of the lens structures is a line-shaped band structure having a curved rod shape having an "a" shape including a rounded round portion with a central portion rounded and a linear extending portion extending from both ends of the rounded portion, Each of the lens structures is divided into upper, lower, left, and right sides to form an arrangement of "X" shape on the basis of the center, and the adjacent LEDs are arranged symmetrically with each other to form an aggregate, There is provided a lens optical system for a rectangular light distribution control configured to perform square light distribution for an LED light source.

Description

TECHNICAL FIELD [0001] The present invention relates to a lens optical system,

[0001] The present invention relates to a lens optical system for controlling a rectangular light distribution, and more particularly, to a lens optical system for controlling a light distribution of a line type LED light source, And to control the light distribution so as to form a rectangular light distribution.

In recent years, light emitting diodes (LEDs) have been used as light sources for energy saving throughout the industry including lighting apparatuses. Accordingly, researches in various industrial fields have been actively carried out to effectively and efficiently use LEDs .

Such LEDs are used as factories such as indoor and outdoor parking for building interior lighting, subway and platform, street light, security, and the like.

In recent years, a lens optical system for controlling the light distribution of the divergent light of the LED has been studied or developed in order to increase the illumination efficiency of the illumination field with respect to the light source of the LED, and the necessity thereof is further increased.

The light distribution control optical system of the LED performs the diffusion control of the light emitted from the LED light source or the convergence control of the light emitted from the LED light source.

In particular, the conventional lens optical system performs a function of controlling the light distribution in a circular pattern with respect to the divergent light of the LED.

Here, to look at the lighting installed in a large-sized building such as a shopping mall, such as an indoor or outdoor parking lot, or a plant factory, a plurality of lighting devices are arranged horizontally or arranged in a zigzag manner to cover the area of the building have.

However, such a horizontal parallel arrangement or a zigzag arrangement has a problem in that the limitation of installation is limited according to the structure design of the building, and the dark portion is generated due to the light not reaching the square corner portion of the building , Which is caused by circular light distribution.

Conventionally, even when a large number of lighting apparatuses are arranged, circular light distribution is performed. Therefore, there is a region where light is superimposed, and the overlap region is widened.

In other words, most of the buildings constructed by the architectures have a quadrangular structure. As shown in FIG. 1, the illumination lamps for illuminating light are largely circular light distribution even though a plurality of illumination devices are arranged, The square corner portion of the screen is inevitably left as a dark area.

Accordingly, the need for square light distribution in the field of illumination has been greatly increased, and the market is also demanding it.

Meanwhile, in the prior art reference, in Korean Patent Laid-Open No. 10-2013-0092714, an optical lens for controlling the light distribution of a divergent beam of a light source in a square beam pattern has been proposed. However, main body; An incident portion formed on one surface of the lens body facing the light source such that a light ray of the light source is incident; And a projection part formed on the other surface of the lens body, the projection part being disposed opposite to the light source so that a light beam incident on the lens body is emitted as a rectangular beam pattern, In the width direction of the rectangular beam pattern.

However, the above-described conventional prior art document implements a rectangular beam pattern for a single light source, and a difference arises in the structure, method, and condition of the square light distribution control of the line type structure to be implemented in the present invention It can be said.

Korean Patent Publication No. 10-2013-0092714 (published on Aug. 21, 2013)

It is an object of the present invention to solve the above-mentioned problems and to solve the above-mentioned problems, and it is an object of the present invention to provide an LED light source, And an object of the present invention is to provide an optical system for a rectangular light distribution control which is capable of performing light distribution control so as to form a rectangular light distribution while controlling light.

The present invention provides an optical system for a rectangular light distribution control system capable of minimizing a dark portion by allowing a rectangular light distribution suitable for a building having a substantially rectangular structure to be illuminated to a dead zone such as an edge portion of a square, There is a purpose.

It is another object of the present invention to provide a lens optical system for a rectangular light distribution control which can realize rectangular light distribution while minimizing the area ratio in the grafting of the line-type structural design and the combination thereof.

The present invention minimizes a region where light is superimposed compared to a conventional circular light distribution even when a plurality of lighting apparatuses are installed through a light distribution control of a rectangular pattern, Another object is to provide a lens optical system for light distribution control.

The present invention can be suitably used as illumination for indoor or outdoor parking for a large building such as a shopping mall, factory or the like, or a similar environment, and a rectangular light distribution control lens Another object is to provide an optical system.

In order to achieve the above object, the optical system for controlling the oblique light distribution control according to the present invention is an aggregate constituted by combining four transparent lens structures having the same shape, wherein each lens structure has rounded round portions Shaped band structure having a straight line extending from both ends of the round portion, and each of the lens structures has an arrangement structure of "X" A plurality of LEDs are arrayed in a line shape, and square light distribution is performed on the LED light sources by arranging them symmetrically to each other so as to form an aggregate.

Here, the square light distribution range of x satisfies the condition of [1.2? X? 3.6] or 0.6 [lambda] for 0.6 [lambda], where R: L = 1: x and d = R? D? 1.8R].

Here, R represents the curvature of the round portion, and d represents the length of the straight line extending portion.

Here, each of the lens structures satisfies the following condition (1).

(1)

Figure 112015047673681-pat00001

However, it has a condition of "cvx = 0 ".

Here, cvx is the curvature in the x-axis direction, cv is the curvature, cc is the aspherical conic constant, and asd means the aspheric coefficient.

Here, each of the lens structures is a "

Figure 112016047936796-pat00002
","
Figure 112016047936796-pat00003
","
Figure 112016047936796-pat00004
"And has an aspheric surface.

According to the present invention, rectangular light distribution can be performed on the divergent light of the line-type LED light source through the combination of the line-type structural design and the combination thereof, thereby realizing a square light distribution, It is possible to achieve a useful effect of illuminating a dead zone such as a corner portion of a square and minimizing a dark portion.

The present invention provides a structure in which the area ratio is minimized in the combination of the line-type structural design and the combination thereof, and the area where the light is superimposed can be minimized even if a plurality of lights are arranged through the square- The light uniformity can be increased even in the case of multiple installations, and the usefulness of realizing the optical control of high quality can be achieved.

INDUSTRIAL APPLICABILITY The present invention can be suitably used as indoor or outdoor parking for a large building such as a shopping mall, a factory or the like, or a similar environment, and it is possible to achieve the advantage of eliminating limitations and limitations in installation according to conventional circular light distribution .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary view showing an accumulated pattern of a typical circular light distribution which is made by a plurality of arrangements of a conventional lighting apparatus. FIG.
2 is a perspective view illustrating a lens optical system for controlling a rectangular light distribution according to an embodiment of the present invention.
3 is a perspective view showing a configuration including a lens optical system for controlling a rectangular light control according to an embodiment of the present invention and a line-type LED light source matched thereto.
4 is a detailed view of a principal portion for explaining a lens optical system for controlling a rectangular light distribution according to an embodiment of the present invention.
5 is a diagram showing an example of a configuration of an LED lighting apparatus including a lens optical system for controlling a rectangular light distribution according to an embodiment of the present invention.
FIG. 6 is a simulation data for performing rectangular light distribution on the line-type LED light source of the optical system for oblique light distribution control according to the embodiment of the present invention, wherein (a) is a light distribution pattern for 60- Is also a radiation pattern for light diffusion processing.
FIG. 7 is comparative simulation data for performing circular light distribution for a conventional line type LED light source, in which (a) is a light distribution pattern for 60-degree light diffusion processing, and (b) is a radiation pattern for 60-degree light diffusion processing.
8A and 8B are simulation data for performing rectangular light distribution on the line type LED light source of the optical system for oblique light distribution control according to the embodiment of the present invention, wherein (a) is a light distribution pattern for 150- Is also a radiation pattern for light diffusion processing.
9 is a comparison simulation data for performing circular light distribution for a conventional line type LED light source, in which (a) is a light distribution pattern for 150-degree light diffusion processing, and (b) is a radiation pattern for 150-degree light diffusion processing.
10 is an exemplary view showing an accumulated pattern of rectangular light distribution through a plurality of arrangements of the LED lighting apparatus including the optical system for controlling the light distribution of the rectangular light distribution according to the embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

As shown in Figs. 2 and 3, the lens optical system 100 for controlling the oblique light distribution control according to the embodiment of the present invention is formed of an aggregate formed by combining four transparent lens structures 110 having the same shape.

Each of the lens structures 110 includes a curved rod-shaped line "A" including a rounded round portion 111 having a central portion and a straight extending portion 112 extending from both ends of the rounded portion 111, Type band structure.

Each of the lens structures 110 is divided into upper, lower, left, and right sides so as to form an X-shaped arrangement with respect to the center of the lens structure 110. The lens structures 110 are disposed symmetrically with each other to form an aggregate.

In this way, through the arrangement structure of the 'X' shape of each lens structure 110, the area ratio can be minimized, and rectangular light distribution can be realized.

In order to configure the four transparent lens structures 110 having the same shape as the combination and the collective body, the optical system 100 for controlling the oblique light distribution control is provided with the substrate 20 on which the line-type LED light source 10 is mounted For easy coupling, four lens structures 110 may be formed and distributed in a protruding form on the plate-shaped transparent body, which is a plate-shaped transparent body formed in the same size as the substrate.

Here, each of the lens structures 110 is preferably formed as an aspheric surface so that the radiation path and the light distribution with respect to the divergent light of the line-type LED light source 10 can be arbitrarily freely adjusted.

With this configuration, a plurality of LED chips 1 can be arranged in a line-like manner for each lens structure 110, and a line-type LED light source 10 composed of the plurality of LED chips 1 can be constructed.

Thus, the four transparent lens structures 110 having the same shape as described above are combined to form an aggregate lens optical system 100, and the LED light source 10 having the line arrangement is controlled to be one light source And can be implemented so as to carry out square light distribution as a whole.

Here, each of the lens structures 110 may be made of glass, acrylic, polycarbonate (PC) or the like including polymethylmethacrylate (PMMA).

Here, for each of the lens structures 110, it is preferable that the following conditions are satisfied for more accurate pattern control of rectangular light distribution.

Referring to FIG. 4, assuming that R: L = 1: x and d = 0.5L with respect to the shape of each lens structure 110,

The range for square light distribution of x satisfies the condition of [1.2 ≤ x ≤ 3.6]

Or x = 2d / R, it is preferable to satisfy the condition [0.6R? D? 1.8R].

Here, R represents the curvature of the round portion, and d represents the length of the straight line extending portion.

When x is less than 1.2 or d is less than 0.6R, the barrel type light distribution close to the circular light distribution is performed. When x is larger than 3.6 or d is larger than 1.8R, the pincushion close to the X- pincushion type light distribution.

In other words, if the above conditions are not met, it is not possible to illuminate the rectangular corner portion of the building even if a plurality of lights are arranged, so that a dark portion remains as in the prior art and a blind spot is generated.

In addition, each of the lens structures 110 is formed as a light source for the LED-type LED light source 10 in which a plurality of LED chips 1 are arranged in a band structure for each lens structure, It is preferable to apply Equation (1) below.

Here, by applying Equation (1), each of the lens structures 110 can perform different light distribution control according to the position of the line shape, and it is possible to perform the light distribution control according to the light accumulation It is possible to remove the yellow pattern.

That is, the light distribution control for the line-type LED light source 10 having a band structure disposed on the lower side through each lens structure 110 can be performed more efficiently, and the light distribution quality to be controlled can be improved.

(1)

Figure 112015047673681-pat00005
Is satisfied.

However, it has a condition of "cvx = 0 ".

Here, cvx is the curvature in the x-axis direction, cv is the curvature, cc is the aspherical conic constant, and asd means the aspheric coefficient.

In addition, each of the lens structures 110 may have a "

Figure 112016047936796-pat00006
","
Figure 112016047936796-pat00007
","
Figure 112016047936796-pat00008
Quot ;, and has an aspherical surface.

Here, in constructing each of the lens structures 110,

Figure 112016047936796-pat00009
Quot ;, it is possible to have the following aspherical surface data.

Figure 112015047673681-pat00010

Here, in constructing each of the lens structures 110,

Figure 112016047936796-pat00011
Quot ;, it is possible to have the following aspherical surface data.

Figure 112015047673681-pat00012

Here, in constructing each of the lens structures 110,

Figure 112016047936796-pat00013
Quot ;, it is possible to have the following aspherical surface data.

Figure 112015047673681-pat00014

The above aspheric data show that the aspheric curvature value has an aspheric conic constant and an aspheric surface coefficient. By adjusting these aspheric surface data, the emission path and the light distribution It is possible to arbitrarily arbitrarily arbitrarily adjust the brightness of the light, and it is possible to perform more effective light distribution control.

At this time, for each lens structure 110,

Figure 112016047936796-pat00015
"Wow "
Figure 112016047936796-pat00016
Quot ;, it is possible to diffuse the light to the LED light source 10 having a configuration in which a plurality of LED chips are arranged in a line, and by combining the respective lens structures 110, It can be used for a square light distribution target which forms a light distribution angle of about 150 degrees while increasing the uniformity.

Further, for each of the lens structures 110,

Figure 112016047936796-pat00017
Quot ;, it is possible to perform diffusion processing for the LED light source 10 having a configuration in which a plurality of LED chips are arranged in a line, and the light uniformity can be uniformed by the combination of the respective lens structures 110 And can be used for a rectangular light distribution target that forms a light distribution angle of approximately 60 degrees.

In addition, the line type LED light source 10 having the plurality of LED chip (1) arrangements may be disposed below each lens structure 110, and more specifically, at the lower center of the inner surface.

Here, the line-type LED light source 10 is arranged in the same shape as the optical system 100 for controlling the rectangular light distribution control.

That is, the lens optical system 100 has the same shape as each lens structure 110 constituting the lens optical system 100, and each lens structure 110 has a line-shaped band structure having a curved rod shape of " Respectively.

At this time, although the LED-type LED light source 10 has a plurality of LED chips 1 arranged at intervals, the LED-type LEDs 1 may be continuously arranged.

5 is a block diagram of a sample product showing an example of an LED lighting apparatus 200 including a lens optical system 100 for controlling a rectangular light distribution according to an embodiment of the present invention as described above, 200 can be used as indoor or outdoor parking for a large building such as a shopping mall, a factory or the like, or a similar environment. The line-type light distribution control optical system 100 having the above- It is possible to control the LED light source to be one light source and control the light distribution to form a square pattern.

Meanwhile, FIGS. 6 to 9 show simulation data for verifying the effect of the present invention, showing comparative data of rectangular light distribution and circular light distribution in comparison thereto.

6 and 8 are simulation data showing a type of a square light distribution control performed by applying a lens optical system for square light control according to an embodiment of the present invention. Simulation comparison data showing the type of implementation of circular light distribution.

6 shows that square light distribution is performed on the line type LED light source by the function of the optical system for controlling the rectangular light distribution control according to the embodiment of the present invention. In FIG. 7, circular light distribution is performed on the line type LED light source And both of them are performing a light diffusion process of 60 degrees, but they show a difference in light intensity.

8 shows that square light distribution is performed on the line type LED light source by the function of the optical system for controlling the rectangular light distribution control according to the embodiment of the present invention. In FIG. 9, circular light distribution is performed on the line type LED light source And at this time, both of them are performing the light diffusion processing of 150 degrees, but they show that there is a difference in light intensity.

Accordingly, it is possible to realize a pattern of light control and rectangular light distribution by using the line-type LED light source 10 as one light source through the optical system 100 for oblique light distribution control according to the embodiment of the invention having the above- As shown in FIG. 10, when arranging a plurality of LED lighting apparatuses 200 including the lens optical system for square light control of the invention, it is possible to minimize the overlapped portion for the cumulative light distribution as well as to perform the square light distribution.

Therefore, the present invention can perform rectangular light distribution suitable for a building having a substantially rectangular structure, and can illuminate a dead zone such as a corner portion of a square, thereby minimizing a dark portion. In addition, It can be suitably used for parking lights, factories, or similar environment lighting, and can produce excellent light quality.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to be illustrative, Substitution can be made, which will be within the technical scope of the present invention.

10: Line type LED light source 100: Lens optical system
110: Lens structure 111:
112: straight line extension part 200: LED lighting device

Claims (4)

And is composed of a combination of four transparent lens structures 110 having the same shape,
Each of the lens structures 110 includes a curved rod-shaped line "A" including a rounded round portion 111 having a central portion and a straight extending portion 112 extending from both ends of the rounded portion 111, Type band structure,
Each of the lens structures 110 is divided into upper, lower, left, and right portions to form an arrangement of "X" shape on the basis of the center, and a plurality of LEDs are arranged in a line shape Arrangement and square light distribution for these LED light sources,
Each of the lens structures 110 may be formed,
In order to improve the light distribution quality for efficiently performing and controlling the light distribution control, the following condition is satisfied: " (1) "
(1)
Figure 112016047936796-pat00032

However, it has a condition of "cvx = 0 ".
Here, cvx is the curvature in the x-axis direction, cv is the curvature, cc is the aspherical conic constant, and asd means the aspheric coefficient.
The method according to claim 1,
For each lens structure,
R: L = 1: x, and d = 0.5L,
The rectangular light-
[1.2 ≤ x ≤ 3.6]
Or [0.6R? D? 1.8R], so as to perform accurate pattern control of the rectangular light distribution.
Here, R represents the curvature of the round portion, and d represents the length of the straight line extending portion.
delete The method according to claim 1,
Each of the lens structures 110 is a "
Figure 112016047936796-pat00019
","
Figure 112016047936796-pat00020
","
Figure 112016047936796-pat00021
&Quot;, and an aspheric surface. The optical system according to claim 1,
KR1020150069418A 2015-05-19 2015-05-19 Lens optical system for light distribution control of square KR101643978B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180083077A (en) * 2017-01-12 2018-07-20 (주)엔디에스 Multiple array square light device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003229014A (en) * 2002-02-01 2003-08-15 Nichia Chem Ind Ltd Led lighting system
WO2009068471A1 (en) * 2007-11-26 2009-06-04 Sergio Macchioni Lighting device
EP2204603A1 (en) * 2007-10-26 2010-07-07 Opto Design, Inc. Surface lighting unit, surface lighting light source device, surface lighting device
KR20130092714A (en) 2012-02-13 2013-08-21 삼성전자주식회사 Optical lens
KR101482155B1 (en) * 2013-10-29 2015-01-14 노명재 Light diffusing lens for luminous intensity distribution control of led groups, and led groups illuminant included the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003229014A (en) * 2002-02-01 2003-08-15 Nichia Chem Ind Ltd Led lighting system
EP2204603A1 (en) * 2007-10-26 2010-07-07 Opto Design, Inc. Surface lighting unit, surface lighting light source device, surface lighting device
WO2009068471A1 (en) * 2007-11-26 2009-06-04 Sergio Macchioni Lighting device
KR20130092714A (en) 2012-02-13 2013-08-21 삼성전자주식회사 Optical lens
KR101482155B1 (en) * 2013-10-29 2015-01-14 노명재 Light diffusing lens for luminous intensity distribution control of led groups, and led groups illuminant included the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180083077A (en) * 2017-01-12 2018-07-20 (주)엔디에스 Multiple array square light device

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