CN100462837C - Backlight system, digital camera and handset of using the backlight system - Google Patents
Backlight system, digital camera and handset of using the backlight system Download PDFInfo
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- CN100462837C CN100462837C CNB2004100919402A CN200410091940A CN100462837C CN 100462837 C CN100462837 C CN 100462837C CN B2004100919402 A CNB2004100919402 A CN B2004100919402A CN 200410091940 A CN200410091940 A CN 200410091940A CN 100462837 C CN100462837 C CN 100462837C
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- light
- light pipe
- pipe
- digital camera
- light source
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Abstract
The invention relates to a backlight system used in a digital camera, and the digital camera and cellphone applying the backlight system. The backlight system comprises light guide plate, light source and controllable light guide tube arranged between the light guide plate and the light source, and controls the light guide tube to be able to make a part of light emitted by the light source enter in the light guide tube and change the outgoing direction of the incident light to lighten external environment. The backlight system can fast switch to the light guide tube to make a part of light emitted from the light source enter in the light guide tube and emitted from a light outgoing curve of the light guide tube after reflected many times inside the light guide tube to lighten the lower-illumination external environment so as not to need to add any flash lamp, thus able to effectively the costs of the digital cameras and cellphones applying the backlight system.
Description
[technical field]
The present invention relates to a kind of back light system of digital camera, the digital camera that adopts this back light system and mobile phone of being used for.
[background technology]
A kind of back light system of prior art as shown in Figure 1, this back light system 1 comprise light guide plate 10, light source 12, with the light source reflecting housing 13 and the reflecting plate 11 of these light source 12 couplings.This light guide plate 10 comprises an incidence surface 101 and an exiting surface 102, and light source 12 is oppositely arranged with this incidence surface 101.
The light that light source 12 sends enters light guide plate 10 from incidence surface 101 after light source reflecting housing 13 reflections, the light exiting surface 102 from light guide plate after reflecting plate 11 reflections that enters light guide plate 10 evenly penetrates, for other element provides uniform surface light source.
The area source work that the display element of digital camera adopts back light system 1 to provide usually, but night take or the low-light (level) environment under, usually need auxiliary lighting source, it is flashlamp, send highlight illumination at short notice, illuminate the object that will take, so as the Image Sensor sensitization of digital camera, the related data of recording image.
The built-in digital digital-code camera module of the mobile phone of prior art, because the focal length of camera lens and the ratio of lens diameter are bigger, and the employed Image Sensor of this built-in digital camera complementary metal oxide semiconductor (CMOS) (Complementary Metal OxideSemiconductor normally, CMOS) or charge coupled cell (Charge Coupled Device, CCD), low-light (level) or night are when taking, need auxiliary lighting source, and itself there is no this function, thereby (Light-Emitting Diode LED) provides white light to need to increase by one group of light emitting diode.But increase this white light LEDs can increase this digital camera as secondary light source cost.
[summary of the invention]
For overcoming the higher defective of prior art digital camera cost, the invention provides a kind of back light system that reduces the digital camera cost.
The present invention also provides a kind of digital camera that adopts above-mentioned back light system.
The present invention also provides a kind of mobile phone that adopts above-mentioned back light system.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of back light system is provided, it comprise light guide plate, light source and be movably set in this light guide plate and this light source between controlled light pipe, control the exit direction that light that this light pipe makes this light source send partly enters this light pipe and changes this incident light, illuminate external environment.
As the further improvement of back light system of the present invention, this back light system also comprises a light pipe support, and this support provides pivot point for this light pipe.
As the further improvement of back light system of the present invention, this light pipe comprises a light inlet and a bright dipping curved surface.
Another technical scheme that technical solution problem of the present invention is adopted is: a kind of digital camera is provided, this digital camera comprises a back light system, this back light system comprise light guide plate, light source and be movably set in this light guide plate and this light source between light pipe, control the exit direction that light that this light pipe makes this light source send partly enters this light pipe and changes this incident light, illuminate external environment.
As the further improvement of digital camera of the present invention, this back light system also comprises a light pipe support, and this support provides pivot point for this light pipe.
As the further improvement of digital camera of the present invention, this light pipe comprises a light inlet and a bright dipping curved surface.
The another technical scheme that technical solution problem of the present invention is adopted is: the mobile phone that a kind of built in digital camera is provided, this digital camera comprises a back light system, this back light system comprise light guide plate, light source and be movably set in this light guide plate and this light source between light pipe, control the exit direction that light that this light pipe makes this light source send partly enters this light pipe and changes this incident light, illuminate external environment.
As the further improvement of the mobile phone of built in digital camera of the present invention, this back light system also comprises a light pipe support, and this support provides pivot point for this light pipe.
As the further improvement of the mobile phone of built in digital camera of the present invention, this light pipe comprises a light inlet and a bright dipping curved surface.
Compared with prior art, adopt this back light system, can switch light pipe fast, the part light of light source enters light pipe, bright dipping curved surface from this light pipe after light pipe inside is repeatedly reflected penetrates, and illuminates the lower environment of extraneous illumination after repeatedly transmitting, thereby need not additionally to increase flashlamp, the digital camera cost that adopts this back light system be can effectively reduce, the digital camera of this back light system of employing and the cost of mobile phone especially can be reduced greatly.
[description of drawings]
Fig. 1 is a kind of schematic perspective view of prior art back light system.
Fig. 2 is the schematic perspective view of back light system first embodiment of the present invention.
Fig. 3 is the vertical view of back light system shown in Figure 2.
Fig. 4 and Fig. 5 are back light system working state schematic representations shown in Figure 2.
Fig. 6 is the schematic perspective view of back light system second embodiment of the present invention.
Fig. 7 is the schematic perspective view of back light system the 3rd embodiment of the present invention.
[embodiment]
The present invention be used for digital camera back light system first embodiment as shown in Figures 2 and 3, wherein Fig. 2 is the schematic perspective view of back light system 2, Fig. 3 is the vertical view of back light system 2 shown in Figure 2.This back light system 2 comprises light guide plate 20, light source 22, reflecting plate 21, light pipe 24 and light pipe support 25.This light guide plate 20 comprises an incidence surface 201 and an exiting surface 202, and this light source 22 is oppositely arranged with this incidence surface 201 and is positioned at this light guide plate 20 outsides.
This light pipe 24 comprises the bright dipping curved surface 240 and the light inlet 241 of the convex lens structures that lays respectively at light pipe 24 two ends, and its inside is set to reflecting surface, makes the light that enters this light pipe 24 penetrate from this bright dipping curved surface 240 through reflection.This light pipe support 25 is fixed on this reflecting plate 21, and the other end is connected with light pipe 24, and this light pipe 24 can rotate around the fulcrum on this light pipe support 25.
When external environment illumination was suitable, digital camera was taken pictures and be need not flashlamp, and back light system 2 switches to position as shown in Figure 4.This moment, the light pipe 24 of this back light system 2 was in this light source 22 tops, and the light that light source 22 sends can be directly enters light guide plate 20 from the incidence surface 201 of light guide plate 20, behind the bottom reflection of light guide plate 20 from exiting surface 202 ejaculation uniform in-plane light.This moment is owing to enter this light pipe 24 without any light, thereby the bright dipping curved surface 240 and the unglazed ejaculations of this light pipe 24, and back light system 2 only uses as the backlight of the display element of digital camera, for it provides uniform in-plane light.
When external environment illumination was low, digital camera illuminated external environment at the quick needs taken than high light, so that take extraneous image, this moment, the duty with back light system 2 switched to position as shown in Figure 5.This moment this back light system 2 detour fulcrum rotation on the light pipe support 25 of light pipe 24, make the light inlet 241 of this light pipe 24 over against this light source 24, the bright dipping curved surface 240 that is positioned at light pipe 24 other ends is positioned at beyond the exiting surface 202 of light guide plate 20.The light that light source 22 sends enters this light pipe 24 from light inlet 241, because these light pipe 24 inside are set to reflecting surface, the light that enters light pipe 24 is through repeatedly arriving bright dipping curved surface 240 after the reflection, the bright dipping curved surface 240 of planoconvex lens structure converges the back and penetrates the comparatively strong light of brightness, for external environment provides a light source, through illuminating external environment after the transmission once more.This moment, this back light system 2 can be used as the flashlamp use of digital camera, provided comparatively brightness stronger light.
Adopt back light system 2, can switch light pipe 24 fast, the part light of light source 22 enters light pipe 24, bright dipping curved surface 240 from this light pipe 24 after light pipe 24 inside are repeatedly reflected penetrates, through illuminating the lower environment of extraneous illumination after the transmission once more, thereby need not additionally to increase flashlamp, can effectively reduce the digital camera cost that adopts this back light system 2, especially can reduce the digital camera of this back light system 2 of employing and the cost of mobile phone greatly.
Seeing also Fig. 6, is second embodiment of back light system of the present invention.This back light system 6 is similar to back light system 2 structures and principle of work, difference is: the light pipe 64 of back light system 6 is the structures of cranking arm, the incidence surface 601 of the horizontal component of this light pipe 64 and light guide plate 60 is oppositely arranged and is movably set between light guide plate 60 and the light source 62, the vertical component of this light pipe 64 is positioned at the side (not indicating) of this light guide plate 60, and bright dipping curved surface 640 is positioned at this vertical component.
Adopt back light system 6, by quick switching light pipe 64, the part light of light source 62 enters light pipe 64, bright dipping curved surface 640 from this light pipe 64 after light pipe 64 inside are repeatedly reflected penetrates, through illuminating the lower environment of extraneous illumination after the transmission once more, thereby need not additionally to increase flashlamp, can effectively reduce the digital camera cost that adopts this back light system 6, especially can reduce the digital camera of this back light system 6 of employing and the cost of mobile phone greatly.
Seeing also Fig. 7, is the 3rd embodiment of back light system of the present invention.This back light system 7 comprises light guide plate 70, light source 72, reflecting plate 71, light pipe 74 and light pipe jacking gear 25.This light pipe jacking gear 75 can adopt spring system etc., but the height of this light pipe 74 of quick adjustment.During digital camera work, variation according to external environment illumination, regulate the height of this light pipe jacking gear 75, thereby regulate the height of this light pipe 74, make the light inlet (indicate) of this light pipe 74 over against light source 72 or away from light source 72, thereby the light that control light source 72 sends enters or does not enter this light pipe 74, realize low-light (level) environment glitter down, the function of not glistening when illumination is suitable, the cost of the digital camera that adopts this back light system 7 be can effectively reduce equally, the digital camera of this back light system 7 of employing and the cost of mobile phone especially can be reduced greatly.
In addition, the light source of this back light system can adopt white light emitting diode or other white light source.This light inlet is ellipse or rectangle.
Back light system of the present invention, not only can be used for various digital cameras, and can be used for the mobile phone of built in digital camera, controlling this back light system makes it at low-light (level) environment glitter down, do not glisten when illumination is suitable, realize the function of flashlamp, thereby save flashlamp, reduce the mobile phone of this back light system of employing and the cost of digital camera.
Claims (24)
1. back light system, it comprise light guide plate, light source and be movably set in this light guide plate and this light source between light pipe, control the exit direction that light that this light pipe makes this light source send partly enters this light pipe and changes this incident light, illuminate external environment.
2. back light system as claimed in claim 1 is characterized in that: also comprise a light pipe support, this light pipe support provides pivot point for this light pipe.
3. back light system as claimed in claim 1 is characterized in that: this light pipe is the structure of cranking arm.
4. back light system as claimed in claim 1 is characterized in that: also comprise the light pipe jacking gear that this light pipe height and position of control changes.
5. back light system as claimed in claim 4 is characterized in that: this light pipe jacking gear is a spring system.
6. back light system as claimed in claim 1 is characterized in that: this light pipe comprises a light inlet and a bright dipping curved surface.
7. back light system as claimed in claim 6 is characterized in that: this bright dipping curved surface is a convex lens structures.
8. back light system as claimed in claim 6 is characterized in that: this light inlet is rectangle or ellipse.
9. back light system as claimed in claim 1 is characterized in that: this light source is a white light source.
10. back light system as claimed in claim 9 is characterized in that: this white light source is a light emitting diode.
11. digital camera, it comprises a back light system, this back light system comprise light guide plate, light source and be movably set in this light guide plate and this light source between light pipe, control the exit direction that light that this light pipe makes this light source send partly enters this light pipe and changes this incident light, illuminate external environment.
12. digital camera as claimed in claim 11 is characterized in that: also comprise a light pipe support, this light pipe support provides pivot point for this light pipe.
13. digital camera as claimed in claim 11 is characterized in that: this light pipe is the structure of cranking arm.
14. digital camera as claimed in claim 11 is characterized in that: also comprise the light pipe jacking gear that this light pipe height and position of control changes.
15. digital camera as claimed in claim 14 is characterized in that: this light pipe jacking gear is a spring system.
16. digital camera as claimed in claim 11 is characterized in that: this light pipe comprises a light inlet and a bright dipping curved surface, and this light inlet is rectangle or ellipse, and this bright dipping curved surface is a convex lens structures.
17. digital camera as claimed in claim 11 is characterized in that: this light source is a white light emitting diode.
18. the mobile phone of a built in digital camera, its digital camera comprises a back light system, this back light system comprise light guide plate, light source and be movably set in this light guide plate and this light source between light pipe, control the exit direction that light that this light pipe makes this light source send partly enters this light pipe and changes this incident light, illuminate external environment.
19. mobile phone as claimed in claim 18 is characterized in that: also comprise a light pipe support, this light pipe support provides pivot point for this light pipe.
20. mobile phone as claimed in claim 18 is characterized in that: this light pipe is the structure of cranking arm.
21. mobile phone as claimed in claim 18 is characterized in that: also comprise the light pipe jacking gear that this light pipe height and position of control changes.
22. mobile phone as claimed in claim 21 is characterized in that: this light pipe jacking gear is a spring system.
23. mobile phone as claimed in claim 18 is characterized in that: this light pipe comprises a light inlet and a bright dipping curved surface, and this light inlet is rectangle or ellipse, and this bright dipping curved surface is a convex lens structures.
24. mobile phone as claimed in claim 18 is characterized in that: this light source is a white light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100919402A CN100462837C (en) | 2004-12-30 | 2004-12-30 | Backlight system, digital camera and handset of using the backlight system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100919402A CN100462837C (en) | 2004-12-30 | 2004-12-30 | Backlight system, digital camera and handset of using the backlight system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1797169A CN1797169A (en) | 2006-07-05 |
| CN100462837C true CN100462837C (en) | 2009-02-18 |
Family
ID=36818292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100919402A Expired - Fee Related CN100462837C (en) | 2004-12-30 | 2004-12-30 | Backlight system, digital camera and handset of using the backlight system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100462837C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8279544B1 (en) | 2011-03-18 | 2012-10-02 | Premier Systems USA, Inc | Selectively attachable and removable lenses for communication devices |
| EP2895905A1 (en) | 2012-09-12 | 2015-07-22 | olloclip, LLC | Removable optical devices for mobile electronic devices |
| US9294660B2 (en) | 2013-03-13 | 2016-03-22 | Olloclip, Llc | Removable lenses for mobile electronic devices |
| US9661200B2 (en) | 2013-08-07 | 2017-05-23 | Olloclip, Llc | Auxiliary optical components for mobile devices |
| WO2015048143A1 (en) | 2013-09-26 | 2015-04-02 | Olloclip, Llc | Selectively attachable and removable optical systems for mobile devices |
| USD754228S1 (en) | 2014-02-19 | 2016-04-19 | olioclip, LLC | Optical component |
| USD761896S1 (en) | 2014-04-11 | 2016-07-19 | Olloclip, Llc | Optical component |
| US10088738B2 (en) | 2014-04-11 | 2018-10-02 | Portero Holdings, Llc | Auxiliary optical devices |
| US9454066B2 (en) | 2014-06-19 | 2016-09-27 | Olloclip, Llc | Auxiliary optical components for mobile devices |
| USD763340S1 (en) | 2014-10-02 | 2016-08-09 | Olloclip, Llc | Optical component |
| CN111433668A (en) * | 2017-10-11 | 2020-07-17 | 深圳传音通讯有限公司 | Soft light lamp area, display module assembly and mobile terminal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020080433A1 (en) * | 2000-12-22 | 2002-06-27 | Nec Corporation | Light unit using point light source, and liquid crystal display using the same light unit |
| JP2004171809A (en) * | 2002-11-18 | 2004-06-17 | Matsushita Electric Ind Co Ltd | Light guide plate, and backlight device using it |
| CN1517759A (en) * | 2003-01-07 | 2004-08-04 | ���ǵ�����ʽ���� | Back-light unit |
| JP2004259688A (en) * | 2003-02-28 | 2004-09-16 | Sanyo Electric Co Ltd | Light guide plate, backlight model, and display device |
-
2004
- 2004-12-30 CN CNB2004100919402A patent/CN100462837C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020080433A1 (en) * | 2000-12-22 | 2002-06-27 | Nec Corporation | Light unit using point light source, and liquid crystal display using the same light unit |
| JP2004171809A (en) * | 2002-11-18 | 2004-06-17 | Matsushita Electric Ind Co Ltd | Light guide plate, and backlight device using it |
| CN1517759A (en) * | 2003-01-07 | 2004-08-04 | ���ǵ�����ʽ���� | Back-light unit |
| JP2004259688A (en) * | 2003-02-28 | 2004-09-16 | Sanyo Electric Co Ltd | Light guide plate, backlight model, and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1797169A (en) | 2006-07-05 |
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Granted publication date: 20090218 Termination date: 20171230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |