WO2010043069A1 - 可控制照明区域的照明装置与方法 - Google Patents
可控制照明区域的照明装置与方法 Download PDFInfo
- Publication number
- WO2010043069A1 WO2010043069A1 PCT/CN2008/001737 CN2008001737W WO2010043069A1 WO 2010043069 A1 WO2010043069 A1 WO 2010043069A1 CN 2008001737 W CN2008001737 W CN 2008001737W WO 2010043069 A1 WO2010043069 A1 WO 2010043069A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- illumination
- driving current
- optical unit
- illumination area
- controlling
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
-
- 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 present invention relates to lighting devices for lighting, and more particularly to a lighting device and method for controlling an illumination area. Background technique
- a small hanging painting on a wall uses a lighting device with a smaller divergence angle to focus the illumination area on a small hanging picture
- a large hanging picture uses a lighting device with a larger divergence angle to concentrate the illumination area on the large hanging picture.
- the user must purchase a lighting device with a different divergence angle to replace it with the demand; in addition, if the installation position of the lighting device is high, the difficulty of replacing the lighting device is increased.
- U.S. Patent Nos. 4,101, 957, 5, 584, 568 and 6, 986, 593 each disclose the illuminating device in which the beam is enlarged or reduced by controlling the distance between the first two lenses of the light source in the illuminating device to effect a change in the divergence angle and thereby change the illumination area.
- transmissive optical components tend to sacrifice large angles of light, resulting in reduced efficiency.
- U.S. Patent 4,855,884 discloses a design in which a variable curvature mirror is used in conjunction with a motor to control the opening or contraction of the reflecting surface to change the illumination area.
- this design is quite complex in terms of organization.
- both of the above methods require the use of a motor to drive the optical component to change the size of the illumination area, increasing the difficulty of assembly.
- U.S. Patent Publication No. 20070091602 discloses a technique in which a plurality of light-emitting diodes and corresponding lens groups are used to form different illumination light field distributions, such as a maximum intensity distribution at the center or a maximum intensity distribution around.
- the light field is distributed in a ring shape, and an illumination area of a desired size is realized by superposing a plurality of light fields.
- the optical component used in this patent is a transmissive optical component, which is liable to cause a large angle of light loss, resulting in reduced efficiency. Summary of the invention
- the present invention provides a device for controlling the size of an illumination area, comprising: a first optical unit comprising a first light emitting diode and a first optical component for generating a first light beam having a first divergence angle such that the first light beam Forming a first illumination light field, wherein the illumination maximum of the first illumination light field is in a central region; the second optical unit includes a second light emitting diode and a second optical component for generating a second divergence angle a second light beam, such that the second light beam can form a second illumination light field, wherein the illumination maximum of the second illumination light field is in a central region; the first driver selectively provides the first driving current or the third driving current to The first light emitting diode is configured to control the illuminance of the first illuminating light field, and the second driving unit is
- the present invention provides a method for controlling the size of an illumination area, comprising the steps of: selecting a first illumination area; obtaining a first drive current group from the work table according to the first illumination area, wherein the first drive current group The first driving current and the second driving current are included; according to the first driving current group, the first driving unit supplies the first driving current to the first optical unit, and the first optical unit generates the first light beam having the first divergence angle, And the first light beam can form a first illumination light field, wherein the illumination maximum of the first illumination light field is in a central region; the second driver provides a second driving current to the second optical unit, so that the second optical unit generates a second light beam having a second divergence angle, and the second light beam may form a second illumination light field, wherein a maximum illumination value of the second illumination light field is in a central region; a second illumination region is selected; a region, the second driving current group is obtained from the work table, wherein the second driving current group includes a third driving current and a
- FIG. 2 shows a light field distribution diagram formed by first and second optical units according to an embodiment of the present invention
- FIG. 3 shows a light field distribution diagram according to an embodiment of the present invention
- FIG. 4 shows a schematic diagram of circuit control in accordance with an embodiment of the present invention
- Figure 5 shows a schematic diagram of a worksheet in accordance with an embodiment of the present invention
- Fig. 6 shows a light field distribution map of the illumination area corresponding to the work table of Fig. 5.
- the size of the illumination area can be changed by controlling the drive current of the input LED without changing the illumination device. This will increase the ease of use and reduce the cost of use and installation risks.
- the illumination device comprises: two light emitting diodes 10, 20; two optical components 30, 40; and a control circuit board 50.
- the first optical component 30 and the second optical component 40 are masks having different curvatures. Therefore, the first optical unit 10 formed by the first optical unit 30 and the second optical unit formed by the second optical unit 40 can generate different light-emitting characteristics, for example, different. The divergence angle or the formation of an annular light field distribution.
- optical components can also be replaced with lens groups to achieve different light extraction characteristics.
- FIG. 2A a schematic diagram of the divergence angle of the first optical unit is shown. It is apparent that the divergence angle 130 of the first optical unit is 20 degrees. Also, referring to FIG. 2B, the transmission of the second optical unit is shown Schematic diagram of the scatter angle. It is apparent that the divergence angle 140 of the second optical unit is 60 degrees. Therefore, the illumination device of the controllable illumination area of the present invention can be completed by combining the first optical unit and the second optical unit.
- FIG. 3A there is shown a first embodiment of controlling an illumination area by controlling different illumination levels of the first optical unit and the second optical unit.
- the first driver supplies 1 unit of current to the first optical unit and the second driver does not supply current to the second optical unit
- the normalized illumination of the first optical unit and the second optical unit is in the illumination area.
- the distribution of the cut surface is as shown in the figure. After mixing, the radius of the cut surface of the illumination area at 1.5 m can be obtained as 25 cm.
- FIG. 3A when the first driver supplies 1 unit of current to the first optical unit and the second driver does not supply current to the second optical unit, the normalized illumination of the first optical unit and the second optical unit is in the illumination area.
- the distribution of the cut surface is as shown in the figure. After mixing, the radius of the cut surface of the illumination area at 1.5 m can be obtained as 25 cm.
- the first optical unit and the second optical unit return The distribution of the illuminance in the illumination area.
- the distribution radius of the illumination area at 1.5 m is 45 cm.
- the distribution of the cut surface in the illumination area is as shown in the figure. After the light is mixed, the distribution radius of the illumination area at the area of 1.5 m is 76 cm.
- the illumination device of the present invention can achieve the same illumination and different illumination regions. That is, in order to realize the illumination area desired by the user, according to the present invention, the light-emitting diodes in the first optical unit and the light-emitting diodes in the second optical unit must receive different drive currents.
- a worksheet is designed, which includes a first drive current and a second drive current corresponding to different illumination areas.
- the control circuit board includes: a power supply 60 that supplies power to the selection signal receiver 70, the microcontroller 100, and two LED drivers 80, 90; a selection signal receiver 70 that receives the selection signal input by the selection device 120 and Converting it to a control signal for output to the microcontroller 100:
- the microcontroller 100 according to the received control signal, compares the work table 110 to obtain a corresponding drive signal and transmits it to the drivers 80, 90; the two drivers 80, 90, After receiving the driving signal, a corresponding driving current is generated, and the driving current is input to the corresponding light emitting diodes 10, 20.
- the user selects the required illumination area size by using the selection device 120, and the selection device transmits a selection signal to the selection signal receiver 70.
- the selection signal receiver 70 After receiving the selection signal, the selection signal receiver 70 sends a control signal to the microcontroller 100, the microcontroller. 100, according to the received control signal, find a corresponding driving current value in the work table 110 and then transmit the driving signal to the corresponding driver 80, 90, driving The drivers 80, 90 receive the driving current corresponding to the driving signal output to the corresponding LEDs 10, 20 to emit light, and the light emitted by the LEDs 10, 20 passes through the corresponding optical components 30, 40 to form different illuminating characteristics.
- the size of the illumination area specified by the user can be obtained after the light is mixed in the distant illumination position.
- FIG. 5 there is shown a schematic diagram of a worksheet 110 in which the worksheet is stored in a read only memory.
- a driving current group is correspondingly arranged on the work table 110, and the normalized driving current input to the first optical unit is 1 unit and the normalized driving current of the second optical unit is input.
- the light field distribution of the illumination area is 27. 4 cm, and the light field distribution is as shown in Fig. 6A. Shown.
- the illumination area 2 or the illumination area 3 is selected, and corresponding driving current groups are correspondingly arranged on the work table 110. After the driving currents are input to the corresponding LEDs 10 and 20, the selected illumination area size can be obtained.
- the light field distribution map is shown in Fig. 6B and Fig. 6C, respectively.
- the drive current group can be directly controlled by firmware in addition to being stored as a worksheet.
- yl ax+b
- y2 cx+d
- yl and y2 are the drive currents to be output to the corresponding optical unit
- x is the feedback signal.
- Firmware is a program that specifies what the microprocessor should do when it receives a feedback signal.
- an advantage of the present invention to provide an illumination device that can control an illumination area without the need for a motor mechanism to drive, and that has the characteristics of small size and improved optical efficiency.
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008801291219A CN102132089A (zh) | 2008-10-15 | 2008-10-15 | 可控制照明区域的照明装置与方法 |
US12/997,075 US20110187284A1 (en) | 2008-10-15 | 2008-10-15 | Apparatus and method capable of changing illumination region |
PCT/CN2008/001737 WO2010043069A1 (zh) | 2008-10-15 | 2008-10-15 | 可控制照明区域的照明装置与方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2008/001737 WO2010043069A1 (zh) | 2008-10-15 | 2008-10-15 | 可控制照明区域的照明装置与方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010043069A1 true WO2010043069A1 (zh) | 2010-04-22 |
Family
ID=42106186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2008/001737 WO2010043069A1 (zh) | 2008-10-15 | 2008-10-15 | 可控制照明区域的照明装置与方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20110187284A1 (zh) |
CN (1) | CN102132089A (zh) |
WO (1) | WO2010043069A1 (zh) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5584568A (en) * | 1991-11-06 | 1996-12-17 | Etablissements Pierre Angenieux | Lighting method and apparatus having a variable illuminated field |
US20030053310A1 (en) * | 2001-09-17 | 2003-03-20 | Matthew Sommers | Variable optics spot module |
CN1913151A (zh) * | 2005-08-08 | 2007-02-14 | 安华高科技Ecbuip(新加坡)私人有限公司 | 用于闪光和自动聚焦应用的发光二极管模块 |
WO2007049176A1 (en) * | 2005-10-25 | 2007-05-03 | Koninklijke Philips Electronics N.V. | Multiple light emitting diodes with different secondary optics |
CN101010539A (zh) * | 2004-08-12 | 2007-08-01 | 永备电池有限公司 | 手电筒 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4101957A (en) * | 1976-09-10 | 1978-07-18 | Bansun Chang | Zoom operating light |
US4855884A (en) * | 1987-12-02 | 1989-08-08 | Morpheus Lights, Inc. | Variable beamwidth stage light |
CN1864027B (zh) * | 2003-10-06 | 2010-08-25 | 照明管理解决方案有限公司 | 使用发光二极管的改良光源和从中采集辐射能量的改良方法 |
FR2893811B1 (fr) * | 2005-11-21 | 2011-06-03 | Zedel | Lampe electrique a zoom electrique |
-
2008
- 2008-10-15 WO PCT/CN2008/001737 patent/WO2010043069A1/zh active Application Filing
- 2008-10-15 CN CN2008801291219A patent/CN102132089A/zh active Pending
- 2008-10-15 US US12/997,075 patent/US20110187284A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5584568A (en) * | 1991-11-06 | 1996-12-17 | Etablissements Pierre Angenieux | Lighting method and apparatus having a variable illuminated field |
US20030053310A1 (en) * | 2001-09-17 | 2003-03-20 | Matthew Sommers | Variable optics spot module |
CN101010539A (zh) * | 2004-08-12 | 2007-08-01 | 永备电池有限公司 | 手电筒 |
CN1913151A (zh) * | 2005-08-08 | 2007-02-14 | 安华高科技Ecbuip(新加坡)私人有限公司 | 用于闪光和自动聚焦应用的发光二极管模块 |
WO2007049176A1 (en) * | 2005-10-25 | 2007-05-03 | Koninklijke Philips Electronics N.V. | Multiple light emitting diodes with different secondary optics |
Also Published As
Publication number | Publication date |
---|---|
CN102132089A (zh) | 2011-07-20 |
US20110187284A1 (en) | 2011-08-04 |
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