WO2016190719A1 - 백라이트 유닛용 엘이디 렌즈 - Google Patents
백라이트 유닛용 엘이디 렌즈 Download PDFInfo
- Publication number
- WO2016190719A1 WO2016190719A1 PCT/KR2016/005673 KR2016005673W WO2016190719A1 WO 2016190719 A1 WO2016190719 A1 WO 2016190719A1 KR 2016005673 W KR2016005673 W KR 2016005673W WO 2016190719 A1 WO2016190719 A1 WO 2016190719A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lens
- total reflection
- light
- reflection surface
- incident
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/69—Details of refractors forming part of the light source
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
-
- 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
- F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/0409—Arrangements for homogeneous illumination of the display surface, e.g. using a layer having a non-uniform transparency
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
Definitions
- the present invention relates to an LED lens for a backlight unit, and more particularly, to an LED lens for a backlight unit for uniformly diffusing light from an LED chip that emits light as a stereoscopic light source.
- a display device used as a computer monitor or TV is provided with a liquid crystal display (LCD). Since the liquid crystal display does not emit light by itself, a separate light source is required. .
- LCD liquid crystal display
- a light source for a liquid crystal display a plurality of fluorescent lamps such as CCFL (Cold Cathode Fluorescent Lamp) and EEFL (External Electrode Fluorescent Lamp) are used, or a plurality of LEDs (Light Emitting Diodes) are used.
- the light source is provided with a light guide plate, a plurality of optical sheets, a reflecting plate, and the like in a back light unit (BLU).
- BLU back light unit
- LEDs are attracting attention as next-generation light sources because they consume less power, have good durability, and can reduce manufacturing costs.
- the LED when used as a light source, the light tends to concentrate in a narrow area and diverge, and in order to apply it to a surface light source such as a display device, it is necessary to distribute the light evenly over a wide area.
- the LED lens according to the prior art is a lens designed in consideration of the light emitted from the LED as a point light source, it is not suitable for applying to the LED emitting to the three-dimensional light source.
- the present invention is to solve the above problems, and provides an LED lens for a backlight unit for evenly spreading the light from the LED chip that emits light as a three-dimensional light source.
- the LED lens for a backlight unit in the LED lens for a backlight unit for evenly spreading the light from the LED chip that emits light as a three-dimensional light source, the LED chip is emitted from the A bottom surface having an incident surface for entering light into the lens; An emission surface to which light incident into the lens exits; And a total reflection surface provided on the bottom surface so as to totally reflect light incident on the inside of the lens by diverging from the side of the LED chip, wherein the total reflection surface has a first convex shape having a convex downward shape. And a second total reflection surface connected to the second total reflection surface and having a convex shape upward, and an inflection point may be formed between the first reflection surface and the second reflection surface.
- the inflection point may be formed at a point within a range of 2/5 to 3/5 of the radius of the lens from the central axis of the LED chip.
- the inflection point may be formed at a half point of the radius of the lens from the central axis of the LED chip.
- the total reflection surface is connected to the second total reflection surface and the total reflection of Fresnel reflection (Fresnel reflection) light from the exit surface to the outside of the lens
- a third total reflection surface may be further included, and a peak point may be formed between the second total reflection surface and the third total reflection surface.
- the peak point may be formed at a point within a range of 3/5 to 3/4 of the radius of the lens from the central axis of the LED chip.
- the peak point may be formed at a 2/3 point of the radius of the lens from the central axis of the LED chip.
- the bottom surface is a first bottom surface connecting the incident surface and the first total reflection surface, and the third total surface and the first connection surface connecting the exit surface It includes a bottom surface, and the first bottom surface and the second bottom surface may be surface treatment to scatter the incident light.
- connection surface having a shape extending in a direction away from the optical axis of the LED lens is provided at the connection portion of the incident surface and the first bottom surface,
- the connection surface may be surface treated to scatter incident light.
- the LED lens for a backlight unit in the LED lens for the backlight unit for evenly spreading the light emitted from the LED chip that emits light as a three-dimensional light source, in the LED chip A bottom surface having an incident surface through which divergent light is incident into the lens; An emission surface to which light incident into the lens exits; And a total reflection surface provided on the bottom surface of the LED chip to totally reflect the light incident into the lens to the emission surface, wherein the bottom surface connects the incident surface and the total reflection surface.
- a first base surface and a second bottom surface connecting the total reflection surface and the exit surface may be included, and the first bottom surface and the second bottom surface may be surface treated to scatter incident light.
- connection surface having a shape extending in a direction away from the optical axis of the LED lens is provided at the connection portion of the incident surface and the first bottom surface,
- the connection surface may be surface treated to scatter incident light.
- the LED lens for a backlight unit may further include a leg provided on the second bottom surface.
- the total reflection surface is a first total reflection surface having a convex shape downward and a second total reflection surface connected to the second total reflection surface and having a convex upward shape. It includes, and the inflection point may be formed between the first total reflection surface and the second total reflection surface.
- the total reflection surface is connected to the second total reflection surface and the total reflection of Fresnel reflection (Fresnel reflection) light from the exit surface to the outside of the lens
- a third total reflection surface may be further included, and a peak point may be formed between the second total reflection surface and the third total reflection surface.
- LED lens for a backlight unit having the configuration as described above can be evenly diffused even when using an LED chip that emits light as a volume source (light source).
- FIG. 1 is a vertical sectional view showing an LED lens according to the present invention
- Figure 2 is an enlarged view 'A' portion of FIG.
- FIG 3 is a view schematically showing a state where luminance deviation occurs in the vicinity of the optical axis of the LED lens due to Fresnel reflection on the exit surface.
- FIG. 4 is a vertical sectional view showing the LED lens according to another embodiment of the present invention
- Figure 5 is a bottom view of the LED lens according to FIG.
- FIG. 6 and 7 illustrate light distribution on the reflective sheet of the backlight unit with the LED lens according to FIG. 4, and FIG. 6 illustrates light distribution when the surface-treated connection surface is not formed. 7 is a view showing a light distribution when the surface-treated connection surface is formed.
- FIG 8 is a diagram illustrating light distribution when the first bottom surface is surface treated.
- FIG. 9 is a view showing the light distribution improving effect when the second bottom surface is surface-treated
- FIG. 9 (a) is a view showing the light distribution when the second bottom surface is not surface-treated
- FIG. It is a figure which shows the light distribution in the case where the 2nd bottom surface is surface-treated.
- FIG. 1 is a vertical sectional view showing an LED lens according to an embodiment of the present invention
- Figure 2 is an enlarged view 'A' portion of FIG.
- an LED lens 10 may include an incident surface through which light emitted from an LED chip 11 is incident into the lens 10.
- 12 includes a bottom surface 20, and an emission surface 30 to emit light emitted from the LED chip 12 and incident into the lens 10.
- the LED chip 11 emits light as a volume source, and the incident surface 12 may be provided on the LED chip 11.
- the incident surface 12 may be formed at the center of the bottom surface 20 to be an inner surface of the receiving groove 13 to accommodate the LED chip 11.
- the exit surface 30 may be formed in a convex shape upward.
- the exit surface 30 of the LED lens 10 according to the present invention may be formed to form a convex shape as a whole line without forming an inflection point.
- the LED chip 11 emits light in the form of a three-dimensional light source (volume source), in order to diffuse the light more evenly, not only the light L1 emitted from the upper surface of the LED chip 11 but also the side surface.
- the light emitted from L2 should also be considered.
- the LED lens 10 according to the present invention is provided on the bottom surface 20 and diverges from the side of the LED chip 11 to totally reflect the light L2 incident into the lens 10 to the exit surface 30.
- the total reflection surface 40 is connected to the incident surface 12 and has a first total reflection surface 42 having a convex shape downward, and a second total reflection surface 43 connected to the second total reflection surface 42 and having a convex upward shape.
- An inflection point P1 may be formed between the first total reflection surface 42 and the second total reflection surface 44.
- the inflection point P1 may be formed at a point within a range of 2/5 to 3/5 of the radius R of the lens 10 from the central axis 14 of the LED chip 11, and preferably approximately the lens 10. It may be formed at a half point of the radius (R) of).
- the total reflection surface 40 is connected to the second total reflection surface 43 and the third total reflection surface for totally reflecting the light (L3) Fresnel (Fresnel reflected) from the exit surface 30 to the exit surface 30 ( 45 may be further included, and a peak point P2 may be formed between the second total reflection surface 43 and the third total reflection surface 45.
- FIG 3 is a view schematically showing a state where luminance deviation occurs in the vicinity of the optical axis of the LED lens due to Fresnel reflection on the exit surface.
- Fresnel reflection is a reflection generated when light passes through an interface between materials having different refractive indices, and light L1 emitted through the exit surface 30 by this Fresnel reflection.
- L3 is reflected back to the bottom surface 20, which causes a luminance deviation near the optical axis 14 of the LED lens 10.
- the total reflection surface 40 further includes a third total reflection surface 45, the light (L3) reflected by the Fresnel reflected light from the exit surface 30 to the lens ( 10) It can be emitted to the outside, so that the luminance deviation in the vicinity of the optical axis 14 of the LED lens 10 can be reduced (see Fig. 1).
- the peak point P2 may be formed at a point within a range of 3/5 to 3/4 of the radius R of the lens 10 from the central axis 14 of the LED chip 11, and preferably, approximately the lens ( It may be formed at the 2/3 point of the radius (R) of 10).
- the LED lens 10 according to the present invention having the configuration as described above, even if the LED chip 11 that emits light as a three-dimensional light source as a light source can be evenly diffused light.
- FIG. 4 is a vertical sectional view showing the LED lens according to another embodiment of the present invention
- Figure 5 is a bottom view of the LED lens according to FIG.
- the bottom surface 20 of the LED lens 10 includes a first bottom surface 22 connecting the incident surface 12 and the total reflection surface 40, and a total reflection surface ( 40 may include a second bottom surface 24 connecting the exit surface 30.
- the LED lens 10 may further include a leg 50 protruding downward from the second bottom surface 24.
- the LED lenses 10 may be formed in a substantially circular shape on a plane, and at least three legs 50 may be provided at predetermined intervals in the circumferential direction.
- the LED lens 10 may further include a connection surface 17 formed at a connection portion between the incident surface 12 and the first bottom surface 12.
- the connecting surface 17 forms a part of the incident surface 12 and is formed at the edge of the incident surface 12, that is, at the connection portion between the incident surface 12 and the first bottom surface 12.
- connection surface 17 may have a shape extending in a direction away from the optical axis 14 of the LED lens 10.
- the space at the edge end of the receiving groove 13 is widen.
- connection surface 17 may be surface treated to scatter light incident from the LED chip 11.
- the surface treatment may be formed by using a chemical corrosion on the mold core used in the injection molding of the LED lens 10, or by applying a sanding corrosion.
- connection surface 17 When the connection surface 17 is surface-treated as described above, the light distribution on the reflective sheet of the backlight unit can be evenly spread without forming a circular band.
- FIG. 6 and 7 illustrate light distribution on the reflective sheet of the backlight unit with the LED lens according to FIG. 4, and FIG. 6 illustrates light distribution when the surface-treated connection surface is not formed. 7 is a view showing a light distribution when the surface-treated connection surface is formed.
- the LED lens 10 according to the present exemplary embodiment may be surface treated not only on the connection surface 17 but also on the first bottom surface 22.
- FIG 8 is a diagram illustrating light distribution when the first bottom surface is surface treated.
- the inner circular band 18 of the two circular bands 18 and 19 is also reduced in the light distribution when the first bottom surface 22 is surface-treated.
- the LED lens 10 according to the present exemplary embodiment may also be surface treated with the second bottom 24 provided with the legs 50.
- FIG. 9 is a view showing the light distribution improving effect when the second bottom surface is surface-treated
- FIG. 9 (a) is a view showing the light distribution when the second bottom surface is not surface-treated
- FIG. It is a figure which shows the light distribution in the case where the 2nd bottom surface is surface-treated.
- the present invention relates to an LED lens for a backlight unit that can uniformly diffuse light even when an LED chip that emits light as a volume source is used as a light source. You can change it. Therefore, the present invention is not limited to the embodiments disclosed in the present specification, and all forms changeable by those skilled in the art to which the present invention pertains will belong to the scope of the present invention.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Nonlinear Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Theoretical Computer Science (AREA)
- Planar Illumination Modules (AREA)
- Led Device Packages (AREA)
- Lenses (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Claims (13)
- 입체광원으로 빛을 발산하는 엘이디칩(LED chip)에서 나오는 빛을 고르게 확산시키기 위한 백라이트 유닛용 엘이디 렌즈에 있어서,상기 엘이디칩에서 발산하는 빛이 상기 렌즈 내부로 입사하는 입사면이 구비되는 밑면;상기 렌즈 내부로 입사한 빛이 출사하는 출사면; 및상기 엘이디칩의 측면에서 발산하여 상기 렌즈 내부로 입사한 빛을 상기 출사면으로 전반사시키도록 상기 밑면에 구비되는 전반사면;을 포함하고,상기 전반사면은 아래로 볼록한 형상을 가지는 제1전반사면과, 상기 제2전반사면에 연결되며 위로 볼록한 형상을 가지는 제2전반사면을 포함하고,상기 제1전반사면과 상기 제2전반사면 사이에는 변곡점이 형성되는 것을 특징으로 하는 백라이트 유닛용 엘이디 렌즈.
- 제 1 항에 있어서,상기 변곡점은 상기 엘이디칩의 중심축으로부터 상기 렌즈의 반지름의 2/5 ~ 3/5 범위 내의 지점에 형성되는 것을 특징으로 하는 백라이트 유닛용 엘이디 렌즈.
- 제 2 항에 있어서,상기 변곡점은 상기 엘이디칩의 중심축으로부터 상기 렌즈의 반지름의 1/2 지점에 형성되는 것을 특징으로 하는 백라이트 유닛용 엘이디 렌즈.
- 제 1 항에 있어서,상기 전반사면은 상기 제2전반사면에 연결되며 상기 출사면에서 프레넬 반사(Fresnel reflection)된 빛을 상기 렌즈 외부로 전반사시키는 제3전반사면을 더 포함하고,상기 제2전반사면과 상기 제3전반사면 사이에는 피크점이 형성되는 것을 특징으로 하는 백라이트 유닛용 엘이디 렌즈.
- 제 4 항에 있어서,상기 피크점은 상기 엘이디칩의 중심축으로부터 상기 렌즈의 반지름의 3/5 ~ 3/4 범위 내의 지점에 형성되는 것을 특징으로 하는 백라이트 유닛용 엘이디 렌즈.
- 제 5 항에 있어서,상기 피크점은 상기 엘이디칩의 중심축으로부터 상기 렌즈의 반지름의 2/3 지점에 형성되는 것을 특징으로 하는 백라이트 유닛용 엘이디 렌즈.
- 제 4 항에 있어서,상기 밑면은 상기 입사면과 상기 제1전반사면을 연결하는 제1밑면과, 상기 제3전반사면과 상기 출사면을 연결하는 제2밑면을 포함하고,상기 제1밑면과 상기 제2밑면에는 입사하는 빛을 산란시키도록 표면처리 되는 것을 특징으로 하는 백라이트 유닛용 엘이디 렌즈.
- 제 7 항에 있어서,상기 입사면과 상기 제1밑면의 연결부위에는 상기 엘이디 렌즈의 광축으로부터 멀어지는 방향으로 확장되는 형상을 가지는 연결면이 구비되고,상기 연결면에는 입사하는 빛을 산란시키도록 표면처리 되는 것을 특징으로 하는 백라이트 유닛용 엘이디 렌즈.
- 입체광원으로 빛을 발산하는 엘이디칩(LED chip)에서 나오는 빛을 고르게 확산시키기 위한 백라이트 유닛용 엘이디 렌즈에 있어서,상기 엘이디칩에서 발산하는 빛이 상기 렌즈 내부로 입사하는 입사면이 구비되는 밑면;상기 렌즈 내부로 입사한 빛이 출사하는 출사면; 및상기 엘이디칩의 측면에서 발산하여 상기 렌즈 내부로 입사한 빛을 상기 출사면으로 전반사시키도록 상기 밑면에 구비되는 전반사면;을 포함하고,상기 밑면은 상기 입사면과 상기 전반사면을 연결하는 제1밑면과, 상기 전반사면과 상기 출사면을 연결하는 제2밑면을 포함하고,상기 제1밑면과 상기 제2밑면에는 입사하는 빛을 산란시키도록 표면처리 되는 것을 특징으로 하는 백라이트 유닛용 엘이디 렌즈.
- 제 9 항에 있어서,상기 입사면과 상기 제1밑면의 연결부위에는 상기 엘이디 렌즈의 광축으로부터 멀어지는 방향으로 확장되는 형상을 가지는 연결면이 구비되고,상기 연결면에는 입사하는 빛을 산란시키도록 표면처리 되는 것을 특징으로 하는 백라이트 유닛용 엘이디 렌즈.
- 제 9 항에 있어서,상기 엘이디 렌즈는 상기 제2밑면에 구비되는 레그를 더 포함하는 것을 특징으로 하는 백라이트 유닛용 엘이디 렌즈.
- 제 9 항에 있어서,상기 전반사면은 아래로 볼록한 형상을 가지는 제1전반사면과, 상기 제2전반사면에 연결되며 위로 볼록한 형상을 가지는 제2전반사면을 포함하고,상기 제1전반사면과 상기 제2전반사면 사이에는 변곡점이 형성되는 것을 특징으로 하는 백라이트 유닛용 엘이디 렌즈.
- 제 12 항에 있어서,상기 전반사면은 상기 제2전반사면에 연결되며 상기 출사면에서 프레넬 반사(Fresnel reflection)된 빛을 상기 렌즈 외부로 전반사시키는 제3전반사면을 더 포함하고,상기 제2전반사면과 상기 제3전반사면 사이에는 피크점이 형성되는 것을 특징으로 하는 백라이트 유닛용 엘이디 렌즈.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/128,436 US20180172221A1 (en) | 2015-05-27 | 2016-05-27 | Led lens for backlight unit |
JP2016567555A JP2017524244A (ja) | 2015-05-27 | 2016-05-27 | バックライトユニット用ledレンズ |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20150073573 | 2015-05-27 | ||
KR10-2015-0073573 | 2015-05-27 | ||
KR1020150138389A KR101652509B1 (ko) | 2015-05-27 | 2015-10-01 | 백라이트 유닛용 엘이디 렌즈 |
KR10-2015-0138389 | 2015-10-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016190719A1 true WO2016190719A1 (ko) | 2016-12-01 |
Family
ID=56886247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2016/005673 WO2016190719A1 (ko) | 2015-05-27 | 2016-05-27 | 백라이트 유닛용 엘이디 렌즈 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20180172221A1 (ko) |
JP (1) | JP2017524244A (ko) |
KR (1) | KR101652509B1 (ko) |
WO (1) | WO2016190719A1 (ko) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018207501A1 (ja) * | 2017-05-11 | 2018-11-15 | Scivax株式会社 | 光学素子および光学系装置 |
CN110291327A (zh) * | 2017-02-27 | 2019-09-27 | 恩普乐股份有限公司 | 发光装置、面光源装置及显示装置 |
WO2020063569A1 (zh) * | 2018-09-27 | 2020-04-02 | 欧普照明股份有限公司 | 一种扩散板和具有该扩散板的灯具 |
TWI783088B (zh) * | 2017-12-14 | 2022-11-11 | 日商Scivax股份有限公司 | 光學元件以及光學系統裝置 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101804498B1 (ko) | 2016-01-15 | 2017-12-04 | 한남대학교 산학협력단 | 조명 장치 및 광 확산을 위한 광학 렌즈 |
KR101946241B1 (ko) * | 2017-06-30 | 2019-05-09 | 주식회사 세미콘라이트 | 반도체 발광소자 및 이의 제조 방법 |
WO2018217006A2 (ko) * | 2017-05-23 | 2018-11-29 | 주식회사 세미콘라이트 | 반도체 발광소자 및 이의 제조 방법 |
KR101946242B1 (ko) * | 2017-06-30 | 2019-05-09 | 주식회사 세미콘라이트 | 반도체 발광소자 및 이의 제조 방법 |
KR101896841B1 (ko) * | 2017-05-26 | 2018-09-11 | 한국광기술원 | 발광 소자용 렌즈 및 이를 이용한 발광 유닛 |
KR101901317B1 (ko) | 2017-05-30 | 2018-09-21 | 주식회사 에이치엘옵틱스 | 광 확산렌즈 |
CN107942581B (zh) * | 2017-11-20 | 2021-03-16 | 四川长虹电器股份有限公司 | 一种直下式背光模组结构 |
CN109856857B (zh) * | 2019-02-28 | 2021-11-12 | 重庆京东方光电科技有限公司 | 一种发光组件、背光源和显示面板 |
WO2021093668A1 (zh) * | 2019-11-15 | 2021-05-20 | 苏州欧普照明有限公司 | 一种照明模组及灯具 |
KR102383324B1 (ko) * | 2020-04-28 | 2022-04-07 | 주식회사 에이치엘옵틱스 | 비대칭 배광을 가지는 다중 광 제어 렌즈 |
KR102457808B1 (ko) * | 2020-08-26 | 2022-10-24 | 주식회사 예지아테크코리아 | 광학 렌즈, 발광 모듈 및 이를 구비한 라이트 유닛 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010097088A (ja) * | 2008-10-17 | 2010-04-30 | Nittoh Kogaku Kk | 光学素子および発光装置 |
KR20140057785A (ko) * | 2012-11-05 | 2014-05-14 | (주)애니캐스팅 | 측면 방출형 발광다이오드용 렌즈, 이를 구비하는 백라이트유닛 및 표시장치 |
JP2014102485A (ja) * | 2012-10-23 | 2014-06-05 | Konica Minolta Inc | Led用光学素子及びled照明装置 |
KR20140120683A (ko) * | 2013-04-04 | 2014-10-14 | 서울반도체 주식회사 | 면 조명용 렌즈 및 발광 모듈 |
KR20140148272A (ko) * | 2013-06-19 | 2014-12-31 | 엘지디스플레이 주식회사 | 발광다이오드 팩키지 및 이를 포함한 액정표시장치 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5213383B2 (ja) * | 2007-08-09 | 2013-06-19 | シャープ株式会社 | 発光装置およびこれを備える照明装置 |
KR20130062005A (ko) * | 2011-12-02 | 2013-06-12 | 서울반도체 주식회사 | 발광 모듈 및 렌즈 |
KR101960131B1 (ko) * | 2012-05-03 | 2019-03-19 | 나럭스 컴퍼니 리미티드 | 광학 소자 |
JP6111110B2 (ja) * | 2012-08-27 | 2017-04-05 | 株式会社エンプラス | 光束制御部材、発光装置、面光源装置および表示装置 |
WO2014196048A1 (ja) * | 2013-06-06 | 2014-12-11 | クイックディール・リミテッド | 光学レンズ、光学モジュール、バックライト組立体及び表示装置 |
KR20150041692A (ko) * | 2013-10-08 | 2015-04-17 | 삼성전자주식회사 | 반사형 확산 렌즈 및 조명 장치 |
TWI711787B (zh) * | 2015-01-08 | 2020-12-01 | 韓商Lg伊諾特股份有限公司 | 光學透鏡及具有光學透鏡之發光模組 |
-
2015
- 2015-10-01 KR KR1020150138389A patent/KR101652509B1/ko active IP Right Grant
-
2016
- 2016-05-27 JP JP2016567555A patent/JP2017524244A/ja active Pending
- 2016-05-27 WO PCT/KR2016/005673 patent/WO2016190719A1/ko active Application Filing
- 2016-05-27 US US15/128,436 patent/US20180172221A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010097088A (ja) * | 2008-10-17 | 2010-04-30 | Nittoh Kogaku Kk | 光学素子および発光装置 |
JP2014102485A (ja) * | 2012-10-23 | 2014-06-05 | Konica Minolta Inc | Led用光学素子及びled照明装置 |
KR20140057785A (ko) * | 2012-11-05 | 2014-05-14 | (주)애니캐스팅 | 측면 방출형 발광다이오드용 렌즈, 이를 구비하는 백라이트유닛 및 표시장치 |
KR20140120683A (ko) * | 2013-04-04 | 2014-10-14 | 서울반도체 주식회사 | 면 조명용 렌즈 및 발광 모듈 |
KR20140148272A (ko) * | 2013-06-19 | 2014-12-31 | 엘지디스플레이 주식회사 | 발광다이오드 팩키지 및 이를 포함한 액정표시장치 |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110291327A (zh) * | 2017-02-27 | 2019-09-27 | 恩普乐股份有限公司 | 发光装置、面光源装置及显示装置 |
WO2018207501A1 (ja) * | 2017-05-11 | 2018-11-15 | Scivax株式会社 | 光学素子および光学系装置 |
CN109247025A (zh) * | 2017-05-11 | 2019-01-18 | Scivax株式会社 | 光学元件及光学系统装置 |
US20200056759A1 (en) * | 2017-05-11 | 2020-02-20 | Scivax Corporation | Optical device and optical system apparatus |
JPWO2018207501A1 (ja) * | 2017-05-11 | 2020-03-12 | Scivax株式会社 | 光学素子および光学系装置 |
US10823371B2 (en) | 2017-05-11 | 2020-11-03 | Scivax Corporation | Optical device and optical system apparatus |
CN109247025B (zh) * | 2017-05-11 | 2021-10-01 | Scivax株式会社 | 光学元件及光学系统装置 |
JP7075668B2 (ja) | 2017-05-11 | 2022-05-26 | Scivax株式会社 | 光学素子および光学系装置 |
TWI783088B (zh) * | 2017-12-14 | 2022-11-11 | 日商Scivax股份有限公司 | 光學元件以及光學系統裝置 |
WO2020063569A1 (zh) * | 2018-09-27 | 2020-04-02 | 欧普照明股份有限公司 | 一种扩散板和具有该扩散板的灯具 |
Also Published As
Publication number | Publication date |
---|---|
KR101652509B1 (ko) | 2016-08-30 |
US20180172221A1 (en) | 2018-06-21 |
JP2017524244A (ja) | 2017-08-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2016190719A1 (ko) | 백라이트 유닛용 엘이디 렌즈 | |
WO2014025193A1 (ko) | 발광다이오드용 렌즈, 이를 구비하는 백라이트유닛 및 표시장치 | |
US7670040B2 (en) | Lightening apparatus | |
WO2014098476A1 (ko) | 측면 방출형 발광다이오드용 렌즈, 이를 구비하는 백라이트유닛 및 표시장치 | |
US7246931B2 (en) | LED light source | |
US7178942B2 (en) | Planar light-emitting device | |
KR101098338B1 (ko) | 광학 패키지, 광학 렌즈 및 이를 갖는 백라이트 어셈블리및 표시장치 | |
US20200142258A1 (en) | Liquid crystal display device and backlight module thereof | |
CN110914746B (zh) | 用于超薄直射式背光的光学透镜 | |
RU2508563C2 (ru) | Низкопрофильная линза полного внутреннего отражения с боковым излучением для светодиода | |
WO2014126278A1 (ko) | 디스플레이 장치 | |
US8550668B2 (en) | Light control member with intersecting groups of parallel prisms, and light-emitting device using such member | |
KR20140058837A (ko) | 광학 시트 및 이를 갖는 백라이트 어셈블리 | |
WO2013168838A1 (ko) | 중앙부에서 가장자리로 균일도를 제어하는 도광판 구조 및 이를 이용한 조명등 | |
KR20190021522A (ko) | 도광체 및 이를 구비하는 백라이트 장치 | |
CN101988640A (zh) | 光源装置及应用其的背光模组 | |
US7766533B2 (en) | Illumination module, and a display and general lighting apparatus using the same | |
JP4622787B2 (ja) | バックライトシステム及び液晶表示装置 | |
WO2018208056A1 (ko) | 확산렌즈 및 이를 채용한 발광장치 | |
WO2013024978A2 (en) | Illuminating member for reducing unified glare rating and lighting device using the same | |
WO2016099195A1 (ko) | 확산렌즈 구조체 및 이를 포함하는 발광 장치 | |
KR20150137959A (ko) | 보조 광학 소자 및 광원 모듈 | |
CN107166334A (zh) | 一种光学元件及应用该光学元件的照明装置 | |
CN107085260A (zh) | 侧入式led灯的背光结构及led灯 | |
WO2010114345A2 (ko) | 광확산 입자를 포함하는 도광판 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 15128436 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2016567555 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16800358 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 16800358 Country of ref document: EP Kind code of ref document: A1 |