CN106412455A - Photoflash lamp device and photographing apparatus - Google Patents
Photoflash lamp device and photographing apparatus Download PDFInfo
- Publication number
- CN106412455A CN106412455A CN201611050679.0A CN201611050679A CN106412455A CN 106412455 A CN106412455 A CN 106412455A CN 201611050679 A CN201611050679 A CN 201611050679A CN 106412455 A CN106412455 A CN 106412455A
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- China
- Prior art keywords
- light emitting
- flash lamp
- flash
- emitting diode
- emitting diodes
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- 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.)
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- 238000000149 argon plasma sintering Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000005286 illumination Methods 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 5
- 210000003205 muscle Anatomy 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
- G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Stroboscope Apparatuses (AREA)
Abstract
The invention relates to the field of control technology, and in particular, to a photoflash lamp device and photographing apparatus. The photoflash lamp device comprises a photoflash lamp driving chip. The photoflash lamp driving chip is connected with two photoflash lamp circuits and at least one photoflash lamp circuit is provided with a plurality of light emitting diodes in parallel connection. The photoflash lamp driving chip controls all the light emitting diodes on the two photoflash lamp circuits to illuminate coincidentally. According to the photoflash lamp device and photographing apparatus of the invention, at least one photoflash lamp circuit is provided with a plurality of light emitting diodes in parallel connection; and the photoflash lamp driving chip controls all the light emitting diodes on the two photoflash lamp circuits to illuminate coincidentally, which increases the illumination intensity of the photoflash lamp and improves the photographing effect and the user's use experience.
Description
Technical field
The present invention relates to control technology field, more particularly, to a kind of flash unit and filming apparatus.
Background technology
With the continuous improvement of scientific and technical sustainable development and people's living standard, mobile phone, panel computer, notebook electricity
The electronic user terminal unit such as brain, photographing unit is increasingly popularized in the life of people.Meanwhile, with digitized video treatment technology
And the progress of charge-coupled image sensor (CCD), digital photographic technology reached unprecedented level.In such background
Under, camera function is all classified as basic outfit by existing subscriber terminal equipment.On the user terminal with camera function, remove
It is provided with that camera lens necessary to photograph is outer in addition it is also necessary to setting has the flash lamp of light filling effect.But, due to arranging on body
The restriction in space, the light source of flash lamp uses that small volume, power consumption are relatively low, respond rapid light emitting diode (Light
Emitting Diode,LED).
Flash lamp driving chip within most of user terminals uses single double pass mode at present.So-called single double
Road pattern refers to, a flash lamp driving chip (driving IC) controls two-way driver circuit, wherein, each road driver circuit simultaneously
On be connected with a LED lamp, so, a flash lamp driving chip just can simultaneously drive two LED lamp.But, using this
, during the light filling that carries out taking a picture, the illumination of flash lamp is relatively low for mode, in the case that ambient light is dark, the photo taken
Dark, effect is poor.And existing two LED lamp are all arranged at the side of photographic head, due to the side flash of light in photographic head, light
, easily flash of light shade, even produces and hide the defects such as angle when serious in line skewness.Therefore, how to improve flash lamp
Illumination, and the light that flash lamp sends is evenly distributed, thus improving image taking effect, improving Consumer's Experience, being current
Technical problem urgently to be resolved hurrily.
Content of the invention
The present invention provides a kind of flash unit and filming apparatus, in order to improve the illumination of flash lamp, thus improving image
Shooting effect, improves Consumer's Experience.
In order to solve the above problems, the invention provides a kind of flash unit, including a flash lamp driving chip, described
Flash lamp driving chip connects many light emitting diodes in parallel on two-way flash lamp circuit, and at least one road flash lamp circuit；Institute
State flash lamp driving chip controls all light emitting diodes on described two-way flash lamp circuit to light simultaneously.
Preferably, described light emitting diode is around surrounding's circular array of a photographic head.
Preferably, described many light emitting diodes are two light emitting diodes.
Preferably, many light emitting diodes in parallel on described at least one road flash lamp circuit are symmetrically distributed in described shooting
Head is around.
Preferably, described flash unit also includes Circular shape lampshade, and described Circular shape lampshade is arranged around described photographic head, institute
State the light that light emitting diode sends to project from Circular shape lampshade.
Preferably, described Circular shape lampshade is made using light-scattering material.
Preferably, many light emitting diodes all in parallel on described two-way flasher circuit.
Preferably, many light emitting diodes being parallel on the flash lamp circuit of same road are identical light-emitting diodes
Pipe.
Preferably, be parallel to many LED package on the flash lamp circuit of same road in same flash lamp or
Many light emitting diodes being parallel on the flash lamp circuit of same road independently encapsulate.
Present invention also offers a kind of filming apparatus, described filming apparatus include any one above-mentioned flash unit.
Flash unit and filming apparatus that the present invention provides, are sent out by many in parallel at least one road flash lamp circuit
Optical diode, flash lamp driving chip controls all of light emitting diode to light simultaneously, increases the luminous photograph of flash unit
Degree, improves image taking effect, even if in the case that ambient light is dark, also can shoot the suitable image of brightness, pole
Big degree improve Consumer's Experience.
Brief description
Accompanying drawing 1 is the flash unit structural representation of the specific embodiment of the invention；
Accompanying drawing 2 is the flash unit structural representation of the specific embodiment of the invention；
Accompanying drawing 3 be the specific embodiment of the invention flash unit in light emitting diode layout；
Accompanying drawing 4 be the specific embodiment of the invention flash unit in by between the electric current of light emitting diode and illumination
Graph of a relation.
Specific embodiment
The flash unit below in conjunction with the accompanying drawings present invention being provided and the specific embodiment of filming apparatus are done specifically
Bright.
This specific embodiment provides a kind of flash unit, and accompanying drawing 1 is the flash lamp of the specific embodiment of the invention
Apparatus structure schematic diagram, accompanying drawing 2 is the flash unit structural representation of the specific embodiment of the invention, and accompanying drawing 3 is the present invention
The layout of light emitting diode in the flash unit of specific embodiment.As Figure 1-3, described in this specific embodiment
Flash unit includes flash lamp driving chip 31, the first flash lamp circuit 32, the second flash lamp circuit 33 and is connected to sudden strain of a muscle
Many light emitting diodes on light circuit for lamp.Described flash lamp driving chip 31 can be sudden strain of a muscle well-known to those skilled in the art
Light lamp driving chip, such as U2304, this specific embodiment is not construed as limiting to this.Described flash lamp driving chip 31 is used for driving
Dynamic two-way flash lamp circuit：First flash lamp circuit 32 and the second flash lamp circuit 33.As shown in Figure 1, 2, described first flash of light
Circuit for lamp 32 and the second flash lamp circuit are in parallel relationship, described flash lamp driving chip 31 according to the control signal receiving,
Export two-way driving current, described two-way driving current is respectively used to drive the first flash lamp circuit 32 and the second flash lamp simultaneously
Circuit 33.
In order to improve the illumination of described flash unit so that also can shoot in the case that ambient light is more dim
Brightness preferably image, this specific embodiment is parallel with many light emitting diodes at least one road flash lamp circuit, described
Flash lamp driving chip 31 controls all light emitting diodes on the two-way flash lamp circuit of described flash unit to light simultaneously.
Accompanying drawing 4 is the relation passing through between the electric current of light emitting diode and illumination in the flash unit of the specific embodiment of the invention
Figure, by not becoming simple line relationship between the electric current I of light emitting diode and illumination E, and is as by light-emitting diodes
The electric current I of pipe is gradually increased, by being gradually reduced in curvature between the electric current I of light emitting diode and illumination E of light emitting diode
Ascending-type curve linear relationship.As shown in Figure 4, in B point, it is 1A, now, this light-emitting diodes by the electric current of light emitting diode
The illumination of pipe is 80Lux；In A point, it is 0.5A by the electric current of light emitting diode, now, the illumination of this light emitting diode is
50Lux.I.e. when dropping to the half of primary current by the electric current of light emitting diode, the illumination of this light emitting diode does not reduce
To original half, and it is greater than original half.Thus, the flash unit described in this specific embodiment passes through at least
On one road flash lamp circuit, many light emitting diodes in parallel are increasing illumination.This specific embodiment is with the first flash lamp circuit
32 and second illustrate as a example two light emitting diodes in parallel on flash lamp circuit 33 respectively.As shown in Figure 1, 2, this is specifically real
Apply and the first light emitting diode 321, the second light emitting diode 322 are parallel with the first flash lamp circuit 32 described in mode, described
It is parallel with the 3rd light emitting diode 331, the 4th light emitting diode 332 on two flash lamp circuits 33.Originally it is embodied as to verify
The effect of the flash unit described in mode, devises a controlled trial, and described controlled trial is divided into two groups：First group using this
Difference two light emitting diodes in parallel on flash unit described in specific embodiment, and two-way flash lamp circuit；Second group
Using flash unit of the prior art, and a light emitting diode is only connected with two-way flash lamp circuit respectively.In order to
Guarantee the accuracy of experimental result, in experimentation, all in first group of flash unit and second group of flash unit
Light emitting diode is all the light emitting diode of parameters all same.After on-test, first group and second group of flash lamp drives
Dynamic chip all exports the electric current of 1A respectively in two-way flash lamp circuit, and total illumination that two groups of flash units are sent is entered
Row measurement.Result draws：Total illumination of first group of flasher is 162Lux, and total illumination of second group of flash unit is
119Lux.It can be seen that, the illumination of the flash unit of this specific embodiment improves 36% than prior art.This is because：?
In first group of flash unit, 0.5A is by the electric current of four light emitting diodes；In second group of flash unit, by two
The electric current of individual light emitting diode is 1A；Although the electric current by first group of each light emitting diode be second group each luminous two
The half of pole pipe electric current, according to the curve of Fig. 4, the brightness value of first group of each light emitting diode be greater than second group each
The half of light emitting diode brightness value, because the quantity of light emitting diode in first group of flash unit is second group of flash lamp dress
Put the twice of middle light emitting diode quantity, so that the total illumination of first group of flash unit is more than second group of flash unit
Total illumination.Wherein, many in parallel on the flash unit Zhong Mei road flash lamp circuit described in this specific embodiment light
It is all independent envelope that diode can be packaged in many light emitting diodes in parallel on same flash lamp or every road flash lamp circuit
Dress.
This specific embodiment can on Jin mono- road flash lamp circuit many light emitting diodes in parallel it is also possible in two-way
Many light emitting diodes all in parallel on flash lamp circuit, in order to increase illumination it is preferred that the two-way of described flash unit glistens
Many light emitting diodes are all parallel with circuit for lamp.
The particular number of many light emitting diodes in parallel, those skilled in the art on described at least one road flash lamp circuit
Can be set according to actual needs.For reduces cost, and described flash unit is made to have appropriate brightness, excellent
Choosing, two light emitting diodes in parallel on described at least one road flash lamp circuit.If in parallel lighting on a road flash lamp circuit
Number of diodes is excessive, not only causes the cost increase of flash unit, and the excessive image being likely to result in shooting of illumination is bright
Spend big, affect shooting quality.
Pressure drop due to being connected in parallel on many light emitting diodes on the flash lamp circuit of same road is consistent it is preferred that simultaneously
Many light emitting diodes being coupled on the flash lamp circuit of same road are identical light emitting diodes.If being connected in parallel on same sudden strain of a muscle
Many light emitting diodes on light circuit for lamp differ it is likely that leading to the burning of a certain light emitting diode in use
Ruin.
So that the uniform light that described flash unit sends is it is preferred that described light emitting diode is taken the photograph around one
Surrounding's circular array as head.As shown in figure 3, described first light emitting diode 321, the second light emitting diode 322, the 3rd
Optical diode 331, the 4th light emitting diode 332 are around with photographic head 34 circular array.So, the light that flash unit sends
Line can uniformly be projected on subject, improves the quality of shooting image.Moreover, in order to prevent two-way flash lamp
Light emitting diode on circuit has differences and produces flash of light shade it is preferred that in parallel on described at least one road flash lamp circuit
Many light emitting diodes be symmetrically distributed in around described photographic head.For example, as shown in figure 3, being parallel to the first flash lamp electricity
The first light emitting diode 321 on road 32 and the second light emitting diode 322 are symmetrically distributed in the upper/lower terminal of photographic head 34, and
The 3rd light emitting diode 331 being coupled on the second flash lamp circuit 33 and the 4th light emitting diode 332 are symmetrically distributed in photographic head
34 left and right two ends.Light emitting diode due to being parallel on the flash lamp circuit of same road is identical light emitting diode, thus
The illumination all same of the light that many light emitting diodes being parallel on same flash lamp circuit send, by those light emitting diodes
The symmetrical uniform light distribution that can be further assured that flash unit sends.
In addition, the uniformity of light that the flash unit in order to improve further described in this specific embodiment sends,
And protect flash lamp to exempt from the impact of external environment it is preferred that described flash unit also includes Circular shape lampshade 35, described annular
Lampshade 35 is arranged around described photographic head 34, and what described first flash lamp circuit 32 and the second flash lamp circuit 33 connected is luminous
The light that diode sends all projects from Circular shape lampshade 35.It is furthermore preferred that described Circular shape lampshade 35 can adopt light-scattering material system
Form, be conducive to scattering the light that light emitting diode sends.
Moreover, this specific embodiment additionally provides a kind of filming apparatus, and described filming apparatus include any of the above-described
Plant flash unit.Filming apparatus described in this specific embodiment can be but be not limited to mobile phone, camera, panel computer,
Notebook computer etc..
Flash unit and filming apparatus that the present invention provides, are sent out by many in parallel at least one road flash lamp circuit
Optical diode, flash lamp driving chip controls all of light emitting diode to light simultaneously, increases flash unit and shoots dress
The luminous illumination put, improves image taking effect, even if in the case that ambient light is dark, also can shoot brightness suitable
Image, high degree improve Consumer's Experience.
The above is only the preferred embodiment of the present invention it is noted that ordinary skill people for the art
Member, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a kind of flash unit, including a flash lamp driving chip, described flash lamp driving chip connects two-way flash lamp electricity
Road is it is characterised in that many light emitting diodes in parallel at least one road flash lamp circuit；Described flash lamp driving chip controls institute
The all light emitting diodes stated on two-way flash lamp circuit light simultaneously.
2. flash unit according to claim 1 is it is characterised in that described many light emitting diodes are two flashes of light
Lamp.
3. flash unit according to claim 1 is it is characterised in that described light emitting diode is around a photographic head
Surrounding circular array.
4. flash unit according to claim 3 is it is characterised in that in parallel on described at least one road flash lamp circuit
Many light emitting diodes are symmetrically distributed in around described photographic head.
5. flash unit according to claim 3 is it is characterised in that described flash unit also includes Circular shape lampshade,
Described Circular shape lampshade is arranged around described photographic head, and the light that described light emitting diode sends projects from Circular shape lampshade.
6. flash unit according to claim 5 is it is characterised in that described Circular shape lampshade adopts light-scattering material system
Become.
7. flash unit according to claim 1 is it is characterised in that many all in parallel on described two-way flash lamp circuit
Light emitting diode.
8. flash unit according to claim 1 is it is characterised in that be parallel on the flash lamp circuit of same road many
Light emitting diode is identical light emitting diode.
9. flash unit according to claim 1 is it is characterised in that be parallel on the flash lamp circuit of same road many
LED package or is parallel to many light emitting diodes difference on the flash lamp circuit of same road in same flash lamp
Individual packages.
10. a kind of filming apparatus are it is characterised in that described filming apparatus include the flash lamp described in any one of claim 1-9
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050679.0A CN106412455A (en) | 2016-11-24 | 2016-11-24 | Photoflash lamp device and photographing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050679.0A CN106412455A (en) | 2016-11-24 | 2016-11-24 | Photoflash lamp device and photographing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106412455A true CN106412455A (en) | 2017-02-15 |
Family
ID=58081787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611050679.0A Pending CN106412455A (en) | 2016-11-24 | 2016-11-24 | Photoflash lamp device and photographing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106412455A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107734226A (en) * | 2017-10-24 | 2018-02-23 | 捷开通讯(深圳)有限公司 | Filming apparatus and electronic equipment for electronic equipment |
| 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 |
| CN114096040A (en) * | 2021-11-17 | 2022-02-25 | 启攀微电子（上海）有限公司 | Double-circuit independent control flash lamp drive structure |
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Application publication date: 20170215 |