US20150117027A1 - Light source module - Google Patents
Light source module Download PDFInfo
- Publication number
- US20150117027A1 US20150117027A1 US14/083,378 US201314083378A US2015117027A1 US 20150117027 A1 US20150117027 A1 US 20150117027A1 US 201314083378 A US201314083378 A US 201314083378A US 2015117027 A1 US2015117027 A1 US 2015117027A1
- Authority
- US
- United States
- Prior art keywords
- light source
- light
- source module
- lens
- transparent ball
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Classifications
-
- F21K9/50—
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the disclosure relates to light source modules, and particularly to a light source module with even distribution of light emission.
- LEDs Light emitting diodes'
- advantages such as high luminosity, low operational voltage, low power consumption, compatibility with integrated circuits, easy driving, long term reliability, and environmental friendliness have promoted their wide use as a lighting source.
- the conventional LED illumination apparatus generally has a radiation angle about 120 degrees and generates a butterfly-type light field.
- the intensity of light emitted by the LED illumination apparatus dramatically decreases when the radiation angle exceeds 120 degrees.
- FIG. 1 is a schematic, isometric view of a light source module according to an exemplary embodiment of the present disclosure.
- FIG. 2 is an inverted, disassembled view of the lens of the light source module of FIG. 1 .
- FIG. 3 is a cross-sectional view of the light source module of FIG. 1 , taken along line III-III thereof.
- FIG. 4 is a partly cutaway view of a transparent ball of the light source module of FIG. 1 , taken along line III-III thereof.
- the light source module 100 includes a light source 10 and a lens 20 . Light emitted from the light source 10 is adjusted by the lens 20 .
- the lens 20 includes a bottom surface 21 , a light input surface 211 , a light output surface 22 , a side surface 23 and a transparent ball 24 below the light input surface 211 .
- the bottom surface 21 is a planar circular surface.
- the light input surface 211 is a curved surface depressing from a center of the bottom surface 21 towards the light output surface 22 of the lens 20 .
- the light input surface 211 defines a cavity.
- a central axis of the light input surface 211 is coaxial to that of the lens 20 .
- the light input surface 211 is substantially elliptical, and a short axis of the elliptical light input surface 211 is substantially coplanar with the bottom surface 21 , and a long axis of the elliptical light input surface 211 is perpendicular to the bottom surface 21 .
- the light output surface 22 is opposite to the bottom surface 21 .
- the light output surface 22 is an aspheric surface and includes a concave surface 221 located at a center thereof and a convex surface 222 located at peripheral thereof and surrounding the concave surface 221 .
- the concave surface 221 is just opposite to the light input surface 211 and is depressed towards the light input surface 211 of the lens 20 .
- the concave surface 222 is used for diverging direct light (i.e., light having a small emerging angle) emitted from the light source 10 .
- the convex surface 222 smoothly connects the concave surface 221 and is used for diverging side light (i.e., light having a large emerging angle) emitted from the light source 10 .
- the side surface 23 connects the bottom surface 21 and the light output surface 22 .
- the side surface 23 is perpendicular to the bottom surface 21 .
- the first side surface 23 is substantially cylindrical.
- the transparent ball 24 is received in the cavity defined by the light input surface 211 .
- the transparent ball 24 faces the light source 10 .
- the center of the transparent ball 24 is located at the optical axis of the lens 20 .
- the transparent ball 24 defines a plurality of hollow holes 241 thereof.
- the transparent ball 24 defines seven hollow holes 241 thereof, and the hollow holes 241 are substantially spherical.
- the seven hollow holes 241 have the same size and are evenly distributed in the transparent ball 24 .
- the radius of each the hollow hole 241 is substantially 0.4 millimeter.
- One of the hollow holes 241 is located at the center of the transparent ball 24 , and the other six hollow holes 241 are surrounding the center hollow hole 241 with equal distance.
- the transparent ball 24 is made of polymethyl methacrylate (PMMA).
- the light source module 100 further includes a supporting pole 30 fixed on the light input surface 211 of the lens 20 for supporting the transparent ball 24 on the lens 20 .
- the light source 10 faces the light input surface 211 of the lens 20 and is received in the cavity defined by the light input surface 211 .
- a light emitting surface of the light source 11 is coplanar with the bottom surface 21 of the first lens 20 .
- the light source 10 is an LED, and a central axis of the LED is coaxial to that of the lens 20 .
- Parts of the light beams emitted from the light source 10 reach the transparent ball 24 , some are reflected and diverged by an outer face of the transparent ball 24 to different directions, and the others penetrate the transparent ball 24 and are diverged by the hollow holes 241 to different directions, and then enter the lens 20 via the light input surface 211 .
- the other parts of light beams emitted from the light source 10 directly enter the lens 20 via the light input surface 211 . All light beams are refracted and diverged by the concave surface 221 and the convex surface 222 of the lens 20 to radiate to the outside environment; therefore, the light emission of the light source module 100 can be substantially evenly distributed.
Abstract
Description
- 1. Technical Field
- The disclosure relates to light source modules, and particularly to a light source module with even distribution of light emission.
- 2. Discussion of Related Art
- Light emitting diodes' (LEDs) many advantages, such as high luminosity, low operational voltage, low power consumption, compatibility with integrated circuits, easy driving, long term reliability, and environmental friendliness have promoted their wide use as a lighting source.
- However, the conventional LED illumination apparatus generally has a radiation angle about 120 degrees and generates a butterfly-type light field. The intensity of light emitted by the LED illumination apparatus dramatically decreases when the radiation angle exceeds 120 degrees.
- Therefore, what is needed is a light source module which can overcome the described limitations.
- Many aspects of the disclosure can be better understood with reference to the following drawing. The components in the drawing are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present light source module for microminiaturization. Moreover, in the drawing, like reference numerals designate corresponding parts throughout the whole view.
-
FIG. 1 is a schematic, isometric view of a light source module according to an exemplary embodiment of the present disclosure. -
FIG. 2 is an inverted, disassembled view of the lens of the light source module ofFIG. 1 . -
FIG. 3 is a cross-sectional view of the light source module ofFIG. 1 , taken along line III-III thereof. -
FIG. 4 is a partly cutaway view of a transparent ball of the light source module ofFIG. 1 , taken along line III-III thereof. - Referring to
FIGS. 1-3 , alight source module 100 in accordance with an exemplary embodiment of the present disclosure is illustrated. Thelight source module 100 includes alight source 10 and alens 20. Light emitted from thelight source 10 is adjusted by thelens 20. - The
lens 20 includes abottom surface 21, alight input surface 211, alight output surface 22, aside surface 23 and atransparent ball 24 below thelight input surface 211. - The
bottom surface 21 is a planar circular surface. Thelight input surface 211 is a curved surface depressing from a center of thebottom surface 21 towards thelight output surface 22 of thelens 20. Thelight input surface 211 defines a cavity. In the present embodiment, a central axis of thelight input surface 211 is coaxial to that of thelens 20. Thelight input surface 211 is substantially elliptical, and a short axis of the ellipticallight input surface 211 is substantially coplanar with thebottom surface 21, and a long axis of the ellipticallight input surface 211 is perpendicular to thebottom surface 21. - The
light output surface 22 is opposite to thebottom surface 21. Thelight output surface 22 is an aspheric surface and includes aconcave surface 221 located at a center thereof and aconvex surface 222 located at peripheral thereof and surrounding theconcave surface 221. Theconcave surface 221 is just opposite to thelight input surface 211 and is depressed towards thelight input surface 211 of thelens 20. Theconcave surface 222 is used for diverging direct light (i.e., light having a small emerging angle) emitted from thelight source 10. Theconvex surface 222 smoothly connects theconcave surface 221 and is used for diverging side light (i.e., light having a large emerging angle) emitted from thelight source 10. - The
side surface 23 connects thebottom surface 21 and thelight output surface 22. In the present embodiment, theside surface 23 is perpendicular to thebottom surface 21. Thefirst side surface 23 is substantially cylindrical. - Referring to
FIG. 4 also, thetransparent ball 24 is received in the cavity defined by thelight input surface 211. Thetransparent ball 24 faces thelight source 10. The center of thetransparent ball 24 is located at the optical axis of thelens 20. Thetransparent ball 24 defines a plurality ofhollow holes 241 thereof. In the present embodiment, thetransparent ball 24 defines sevenhollow holes 241 thereof, and thehollow holes 241 are substantially spherical. The sevenhollow holes 241 have the same size and are evenly distributed in thetransparent ball 24. The radius of each thehollow hole 241 is substantially 0.4 millimeter. One of thehollow holes 241 is located at the center of thetransparent ball 24, and the other sixhollow holes 241 are surrounding the centerhollow hole 241 with equal distance. Thetransparent ball 24 is made of polymethyl methacrylate (PMMA). - In the present embodiment, the
light source module 100 further includes a supportingpole 30 fixed on thelight input surface 211 of thelens 20 for supporting thetransparent ball 24 on thelens 20. - The
light source 10 faces thelight input surface 211 of thelens 20 and is received in the cavity defined by thelight input surface 211. In the present embodiment, a light emitting surface of thelight source 11 is coplanar with thebottom surface 21 of thefirst lens 20. Thelight source 10 is an LED, and a central axis of the LED is coaxial to that of thelens 20. - Parts of the light beams emitted from the
light source 10 reach thetransparent ball 24, some are reflected and diverged by an outer face of thetransparent ball 24 to different directions, and the others penetrate thetransparent ball 24 and are diverged by thehollow holes 241 to different directions, and then enter thelens 20 via thelight input surface 211. The other parts of light beams emitted from thelight source 10 directly enter thelens 20 via thelight input surface 211. All light beams are refracted and diverged by theconcave surface 221 and theconvex surface 222 of thelens 20 to radiate to the outside environment; therefore, the light emission of thelight source module 100 can be substantially evenly distributed. - It is to be further understood that even though numerous characteristics and advantages have been set forth in the foregoing description of embodiments, together with details of the structures and functions of the embodiments, the disclosure is illustrative only; and that changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (10)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW102139179A | 2013-10-29 | ||
TW102139179 | 2013-10-29 | ||
TW102139179A TWI582499B (en) | 2013-10-29 | 2013-10-29 | Light source module |
Publications (2)
Publication Number | Publication Date |
---|---|
US20150117027A1 true US20150117027A1 (en) | 2015-04-30 |
US9033554B1 US9033554B1 (en) | 2015-05-19 |
Family
ID=52995228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/083,378 Expired - Fee Related US9033554B1 (en) | 2013-10-29 | 2013-11-18 | Light source module |
Country Status (2)
Country | Link |
---|---|
US (1) | US9033554B1 (en) |
TW (1) | TWI582499B (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030095409A1 (en) * | 2001-11-20 | 2003-05-22 | Hung-Cheih Cheng | Simplified lighting apparatus |
US7686478B1 (en) * | 2007-01-12 | 2010-03-30 | Ilight Technologies, Inc. | Bulb for light-emitting diode with color-converting insert |
US20140293614A1 (en) * | 2013-03-27 | 2014-10-02 | Hon Hai Precision Industry Co., Ltd. | Lens and led light module having the same |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWM452315U (en) * | 2013-01-15 | 2013-05-01 | Chun Kuang Optics Corp | Optical element and light source module |
-
2013
- 2013-10-29 TW TW102139179A patent/TWI582499B/en not_active IP Right Cessation
- 2013-11-18 US US14/083,378 patent/US9033554B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030095409A1 (en) * | 2001-11-20 | 2003-05-22 | Hung-Cheih Cheng | Simplified lighting apparatus |
US7686478B1 (en) * | 2007-01-12 | 2010-03-30 | Ilight Technologies, Inc. | Bulb for light-emitting diode with color-converting insert |
US20140293614A1 (en) * | 2013-03-27 | 2014-10-02 | Hon Hai Precision Industry Co., Ltd. | Lens and led light module having the same |
Also Published As
Publication number | Publication date |
---|---|
TW201516539A (en) | 2015-05-01 |
TWI582499B (en) | 2017-05-11 |
US9033554B1 (en) | 2015-05-19 |
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AS | Assignment |
Owner name: HON HAI PRECISION INDUSTRY CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HU, CHAU-JIN;DAI, FENG-YUEN;HUANG, YUNG-LUN;REEL/FRAME:033460/0232 Effective date: 20131115 |
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STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
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Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
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STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
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FP | Expired due to failure to pay maintenance fee |
Effective date: 20190519 |