CN103076708B - Camera flashing light system and the method for regulation flash exposure power - Google Patents
Camera flashing light system and the method for regulation flash exposure power Download PDFInfo
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- CN103076708B CN103076708B CN201210272478.0A CN201210272478A CN103076708B CN 103076708 B CN103076708 B CN 103076708B CN 201210272478 A CN201210272478 A CN 201210272478A CN 103076708 B CN103076708 B CN 103076708B
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Abstract
nullThe invention discloses a kind of camera flashing light system and the method for regulation flash exposure power，This camera flashing light system includes an emitter and a receptor，Described emitter reads camera output data (camera output data include at least one flash exposure power data away from the flash lamp of emitter) that camera sends and receives user input data that user the inputs regulation of the flash exposure power data at least one flash lamp (user input data include)，Flash exposure power data after adjusting can be sent at least one connection by emitter the flash lamp of receptor，Receptor can receive the flash exposure power data after the adjustment that emitter sends，And the flash exposure power data after adjusting can be sent to be attached thereto flash lamp，Enable to be operated in the camera under TTL mode and regulate the exposure power of remote flash lamp compatible individually or in groups，Improve the control level of flash exposure power adjustments.
Description
Technical field
The present invention relates to the control of remote flash lamp, be specifically related to a kind of camera flashing light system and the method for regulation flash exposure power.
Background technology
In traditional shooting, a camera can one or more remote flash lamps of wireless support.Each flash lamp has an exposure power, and this exposure power is for controlling the flash intensity that flash lamp produces.The flash exposure power of flash lamp can be with Non-follow control, it is possible to use camera automatically controls.Especially, camera can calculate and control the exposure power of remote flash lamp by TTL light-metering.
Under TTL mode, wireless transmission preflashing is instructed by camera, and the instruction of this preflashing makes remote flash lamp glisten according to certain power level.Camera will be analyzed the exposure power of preflashing and calculate the brightness value needed for formal exposure (such as taking pictures).Then required flash exposure power will be sent to remote flash lamp before formal exposure by camera.
Although using traditional TTL mode shooting easily, but the control level improving flash exposure power being the most necessary.
Present invention
For above-mentioned technical problem, the invention provides a kind of for camera with away from the data-transmission system between the flash lamp of camera, this system is used for the flash exposure power (hereinafter referred to as camera flashing light system) of remote adjustment flash lamp, and it enables to be operated in the camera under TTL mode and regulates the exposure power of remote flash lamp compatible individually or in groups.And provide one and utilize this system, the method for regulation flash exposure power.
Technical scheme is as follows: a kind of camera flashing light system, including emitter and receptor, it is characterised in that
Described emitter includes:
One emitter connection member, for connecting emitter and camera, emitter can read, by emitter connection member, the data (camera output data) that camera sends, and this camera output data include at least one flash exposure power data away from the flash lamp of emitter
One user input unit, for receiving the user input data of camera flashing light system user, this user input data includes the regulation of the flash exposure power data of at least one flash lamp,
One transmitter unit, the flash exposure power data after adjusting is sent at least one connection the flash lamp of receptor；
Described receptor includes:
One receives unit, the flash exposure power data after receiving the adjustment that emitter sends,
One receptor connection member, is used for connecting receptor and flash lamp, and the flash exposure power data after making receptor will be able to be adjusted by receptor connection member passes to the flash lamp being attached thereto.
The technical scheme realizing the object of the invention still further comprises, described camera flashing light system includes a group or more flash lamp away from emitter, often group includes one or more flash lamies, and each flash lamp often organized connects and has a receptor.
Wherein, camera output data include a set of flash exposure power data, and these data are used for each group in a group or more flash lamp；
User input data includes the regulation often organizing flash exposure power data.
The technical scheme realizing the object of the invention still further comprises, and described emitter sends the flash exposure power data after each group of adjustment respectively；Described receptor receives the flash exposure power data after the group set with it adjusts.
The technical scheme realizing the object of the invention still further comprises, and described emitter reads the preflashing data from camera by emitter connection member, and preflashing data include at least one flash lamp sends the instruction performing flash of light；Preflashing data can be sent at least one and connect the flash lamp having receptor by emitter.
The technical scheme realizing the object of the invention still further comprises, flash exposure power data after the adjustment that described emitter sends includes at least one flash lamp sends the instruction performing flash of light, and the flash exposure power that this flash of light provides according to the flash exposure power data after adjusting performs.
The technical scheme realizing the object of the invention still further comprises, and described emitter includes:
One emitter connection member, is used for connecting emitter and camera, enables emitter to read, by this emitter connection member, the camera output data that camera sends, and camera output data include at least one flash exposure power data away from the flash lamp of emitter；
One user input unit, for receiving the user input data of camera flashing light system user, user input data includes the regulation of the flash exposure power data of at least one flash lamp；
One transmitter unit, the flash exposure power after adjusting is sent at least one connection the flash lamp of receptor.
The technical scheme realizing the object of the invention still further comprises, described user input unit is used for receiving user input data, user input data includes the regulation to flash exposure power data, this regulation is used for a group or more flash lamp away from emitter, and each group includes one or more flash lamies；
Camera output data include a set of flash exposure power data, and these data are used for each group in a group or more flash lamp.
User input data includes the regulation often organizing flash exposure power data.
The technical scheme realizing the object of the invention still further comprises, and described emitter sends the flash exposure power data after often group adjustment respectively.
The technical scheme realizing the object of the invention still further comprises, and described emitter can read, by emitter connection member, the preflashing data that camera sends, and preflashing data include at least one flash lamp sends the instruction performing flash of light.
Preflashing data can also be sent at least one and connect the flash lamp having receptor by described emitter.
The technical scheme realizing the object of the invention still further comprises, flash exposure power data after the adjustment that described emitter sends includes at least one flash lamp sends the instruction performing flash of light, and the flash exposure power that this flash of light provides according to the flash exposure power data after adjusting performs.
A kind of method utilizing described camera flashing light system to be adjusted flash exposure power, the method includes:
Receive camera output data from camera and include at least one flash exposure power data away from the flash lamp of camera to emitter, camera output data；
Receiving user input data to emitter from user, user input data includes the regulation of the flash exposure power data at least one flash lamp；
Flash exposure power after adjusting is sent at least one connection the flash lamp of receptor.
The technical scheme realizing the object of the invention still further comprises, the step of described reception camera output data includes receiving camera output data, camera output data include a set of flash exposure power data, these data are for a group or more away from each group of flash lamp of emitter, and each group includes one or more remote flash lamps；
The step receiving user input data includes receiving user input data, and user input data includes the regulation often organizing flash exposure power data.
The technical scheme realizing the object of the invention still further comprises, and the flash exposure power after adjusting is sent at least one step connecting the flash lamp having receptor and includes the flash exposure power data after sending often group adjustment respectively.
The technical scheme realizing the object of the invention still further comprises, and from camera, preflashing data are sent to emitter, and these preflashing data include at least one flash lamp sends the instruction performing flash of light.
This step also includes that preflashing data are sent at least one connects the flash lamp having receptor.
Further, this step also includes connecting at least one has the flash lamp of receptor to send the instruction performing flash of light, and the flash exposure power that this flash of light provides according to the flash exposure power data after adjusting performs.
Beneficial effects of the present invention: camera flashing light system provided by the present invention, flash exposure power data after adjusting can be sent at least one connection by described emitter the flash lamp of receptor, receptor can receive the flash exposure power data after the adjustment that emitter sends, and the flash exposure power data after adjusting can be sent to be attached thereto flash lamp, enable to be operated in the camera under TTL mode and regulate the exposure power of remote flash lamp compatible individually or in groups, improve the control level of flash exposure power adjustments.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the emitter of the camera flashing light system of the remote adjustment flash exposure power being consistent with point of the present invention.
Fig. 2 is the structured flowchart of the receptor of the camera flashing light system of the remote adjustment flash exposure power being consistent with point of the present invention.
Fig. 3 is the object construction figure of emitter of the present invention.
Fig. 4 is the structured flowchart of the camera flashing light system of a kind of remote adjustment flash exposure power being consistent with point of the present invention.
Detailed description of the invention
The invention provides a kind of for camera with away from the data-transmission system between the flash lamp of camera, this system is used for the flash exposure power (hereinafter referred to as camera flashing light system) of remote adjustment flash lamp, and it enables to be operated in the camera under TTL mode and regulates the exposure power of remote flash lamp compatible individually or in groups.
According to an aspect of the present invention, it discloses a kind of camera flashing light system configured for remote adjustment flash exposure power.This system includes an emitter (as shown in Figure 1) and a receptor (as shown in Figure 2).Emitter includes an emitter connection member 11, a user input unit 15 and a transmitter unit 16.Emitter connection member is used for connecting emitter and camera (not shown on the FIG.), emitter can read, by emitter connection member 11, the camera output data that camera sends, and this camera output data include the flash exposure power data of at least one remote flash lamp；User input unit 15 is used for receiving the user input data of camera flashing light system user, and this user input data includes at least one away from the regulation of the flash exposure power data of the flash lamp of emitter；Transmitter unit 16 can (by emission element 16a(such as RF circuit) and launch antenna 16b) will adjust after flash exposure power data be sent at least one and connect and have the flash lamp of receptor.Receptor includes that one receives unit 21 and a receptor connection member 26.Receive unit can (by reception antenna 21b and receive parts 21a(such as RF circuit)) receive emitter transmission adjustment after flash exposure power data；Receptor connection member 26 is used for connecting receptor and flash lamp, and the flash exposure power data after adjustment can be passed to, by receptor connection member 26, the flash lamp that is attached thereto by receptor.
Camera flashing light system includes one or more groups flash lamp away from emitter, and often group includes one or more flash lamies, and one or more remote flash lamps often organized all connect a receptor.Camera output data include a set of flash exposure power data, and these data are used for each group of flash lamp.User input data includes the regulation to each group of flash exposure power data.Emitter can send the flash exposure power data after each group of adjustment respectively, and receptor can receive the flash exposure power data after the group set with it adjusts.
Emitter can read, by emitter connection member 11, the preflashing data that camera sends.Preflashing data include at least one flash lamp sends the instruction performing flash of light.Preflashing instruction can also be sent at least one connection by transmitter unit 16 flash lamp of receptor.
Flash exposure power data after the adjustment that transmitter unit 16 sends includes at least one flash lamp sends the instruction performing flash of light, and the flash exposure power that this flash of light provides according to the flash exposure power data after adjusting performs.
According to another point of the present invention, a kind of method disclosing remote adjustment flash exposure power.Said method includes:
Receive camera output data from camera and include the flash exposure power data of least one set flash lamp to emitter, camera output data；
Receiving user input data to emitter from user, user input data includes the regulation of the flash exposure power data to least one set flash lamp；
Flash exposure power data after adjusting is sent to least one set connection the flash lamp of receptor.
The camera flashing light system that the consistent flash exposure power at least one flash lamp of point a kind of and of the present invention is grouped and adjusts is disclosed shown in Fig. 4.The TTL exposure power result of calculation of camera can be independently grouped by this system, and after the adjustment they is wirelessly sent to flash lamp.
Fig. 1 is shown that the structured flowchart of the emitter of said system, and this emitter includes:
One connection member 11 being used for connecting camera, this connection member 11 can be connected well with the hot shoe interface on camera；
One signal processing unit 12, is used for processing the signal received from camera；
One or more visible feedback devices 13, such as one display screen or one group of LED, it is used for the operational circumstances of emitter is fed back to user；
One microprocessor 14, for operation and the execution function enumerated below of control transmitter；
One user input unit 15, such as one keyboard, facilitate user input data (such as adjusting data)；
One transmitter unit 16, for wireless communicated data (such as transmitting flash exposure power data by emission element 16a with launching antenna 16b) to the corresponding receptor of the flash lamp away from emitter.
Emitter disclosed in this can obtain TTL automatic exposure power data by connection member 11, and this connection member 11 can be connected with the hot shoe interface of camera well.According to the present invention wherein, the camera exposure power data often organizing remote flash lamp is grouped by emitter by using microprocessor 14, and be wirelessly sent to them connect the flash lamp having receptor by transmitter unit 16 (such as by user input unit 15, such as keyboard) after user adjusts.Correspondingly, the flash exposure power often organizing flash lamp can be regulated, without having influence on the exposure power of other flash lamp groups individually by emitter.Additionally, emitter disclosed in this is capable of the Manual exposure pattern of remote flash lamp and being applied in combination of auto exposure mode.
Fig. 2 is shown that the structured flowchart of the receptor of said system, and this receptor includes:
One receives unit 21, and it is corresponding with the transmitter unit 16 on emitter, and this receives unit 21 for for receiving data (such as receiving flash exposure power data by reception antenna 21b and reception parts 21a) away from the flash lamp wireless of emitter；
One or more visible feedback devices 22, such as one LED state display lamp, it is used for the operational circumstances of receptor is fed back to user；
One microprocessor 23, is used for controlling the operation of receptor and performing function enumerated below；
One or more switches 24, are used for switching the channel of the signal of the group of the remote flash lamp being connected with receptor and switching receptor reception emitter transmission；
One signal processing unit 25, is used for processing the signal being delivered to flash lamp；
One connection member 26, is used for connecting flash lamp, and this connection member 26 can be connected well with the hot shoe interface of flash lamp.
Fig. 3 show the object construction figure of emitter of the present invention.Emitter has more than one control knob and a LCD liquid crystal display screen, is used for regulating the pattern of the flash lamp away from emitter, power level and function.
Here, the demonstration of regulation flash exposure power system will be illustrated.First, emitter reads after the preflashing instruction of camera, and preflashing instruction is sent to one or more receptors.Receptor notifies that flash lamp performs preflashing after receiving preflashing instruction.Camera can capture the brightness of preflashing by TTL light-metering.Then camera will calculate the flash exposure power often organizing flash lamp (three groups of such as flash lamp: A, B, C).Then, emitter obtains the flash exposure power data from camera by the hot shoe interface of camera.After emitter is for often group flash lamp receives flash exposure power data, the data often organized are adjusted by the numerical value (by the button on emitter and LCD liquid crystal display screen) of synthetic user input.Such as, user can add light, dim light to the flash exposure power calculated by camera or not adjust process.Then the flash exposure power after adjusting is sent on corresponding receptor by radio (such as: RF signal).
After receptor receives the flash exposure power data after adjustment, these data are passed to coupled flash lamp by the hot shoe interface of flash lamp.Then, flash lamp can be with other flash lamp with the flash exposure power synchronous flash of light after adjusting.
By using radiotechnics remotely to control flash lamp, the present invention is capable of the transmission of photometric data and the independence packet of exposure power and regulation.
In demonstration explanation, native system includes more than one receptor, and each receptor connects and has a flash lamp.Flash lamp is divided into one or more flash lamp groups (such as: three groups).Each flash lamp can be independently arranged into TTL mode or manual mode.In demonstration explanation, in a manual mode, the exposure power that can set has: 1/1,1/1-1/3,1/1-2/3,1/2,1/2-1/3,1/2-2/3,1/4,1/4-1/3,1/4-2/3,1/8,1/8-1/3,1/8-2/3,1/16,1/16-1/3,1/16-2/3,1/32,1/32-1/3,1/32-2/3,1/64,1/64-1/3,1/64-2/3,1/128.Under TTL mode, the compensation adjustment scope of the exposure power that camera calculates automatically is :-3.0Ev,
-2.7Ev, - 2.3Ev, -2.0Ev, -1.7Ev, -1.3Ev, -1.0Ev, -0.7Ev, -0.3Ev, +0Ev, +0.3Ev,
+ 0.7Ev ,+1.0Ev ,+1.3Ev ,+1.7Ev ,+2.0Ev ,+2.3Ev ,+2.7Ev ,+3.0Ev(" Ev " expression " light exposure ").
The emitter of this system and receptor are that pairing uses, so needing coupling emitter and receptor to shoot a photo to detect the normal use of its TTL light-metering.
The following is the explanation of some major function of the present invention.
Emitter at least both of which: TTL/M mixed model and rate mode, as shown in Figure 3.Under TTL/M mixed model, A, B, C group can be independently set into TTL, manual or " shut " mode", simultaneously with EV or the adjustment of power level.Under rate mode, the flash of light ratio of A group and B group can arrange from such as 8:1 to 1:8, and EV level can also adjust.By the OptionButton on emitter, can switch between both of which.
Having a select button 17 on emitter, user can toggle between B, C group and channel selection at A.When A group, B group or C group are chosen, EV and the power level of this group can be adjusted by user by the adjustment button (+/-button) 18 on emitter, and when a channel is selected, working channel (1,2,3,4) can be switched over by user by this button.This also can change emitter and transmit the channel of signal.Emitter will be operated with final set channel.Under rate mode, user can be adjusted at A:B by select button 17, and EV adjusts and toggles between channel selection.
This emitter also includes a testing button 19.User can be triggered by the examination of this button and be on all receptors of same channel the flash lamp being connected with emitter.Pressing testing button, flash lamp can be triggered successively: first A group, followed by B group, is finally C group.
Although above content has carried out specific description and description in detail to the present invention, but the present invention should not be limited by above-mentioned shown details.Should be understood that; for the person of ordinary skill of the art; under the premise without departing from the principles of the invention; without the technical characteristic just can associated by creative work; some modification and improvement can also be made; these changes are obviously regarded as equivalent feature, still fall within the protection domain of patent of the present invention.
Claims (13)
1. a camera flashing light system, including emitter and receptor, it is characterised in that described transmitting
Device includes: an emitter connection member, is used for connecting emitter and camera, and emitter can be by launching
Device connection member reads camera output data, and this camera output data include at least one sudden strain of a muscle away from emitter
The flash exposure power data of light modulation, a user input unit, it is used for receiving camera flashing light system and uses
The user input data at family, this user input data includes the flash exposure power data of at least one flash lamp
Regulation, a transmitter unit, the flash exposure power data after adjusting is sent at least one even
It is connected to the flash lamp of receptor；Described receptor includes: one receives unit, is used for receiving emitter and sends
Adjustment after flash exposure power data, a receptor connection member, be used for connecting receptor and flash of light
Lamp, make receptor can by receptor connection member will adjust after flash exposure power data pass to
Be connected flash lamp；
Described camera flashing light system includes a group or more flash lamp away from emitter, often organizes bag
Include one or more flash lamies, and each flash lamp often organized connects and has a receptor, wherein,
Camera output data include a set of flash exposure power data, and these data are used for a group or more flash lamp
In each group；User input data includes the regulation often organizing flash exposure power data.
2. according to the camera flashing light system described in claim 1, it is characterised in that
Described emitter sends the flash exposure power data after each group of adjustment respectively；Described receptor receives
Flash exposure power data after adjusting to the group set with it.
3. according to the camera flashing light system described in claim 1, it is characterised in that described emitter
Reading the preflashing data from camera by emitter connection member, preflashing data include glistening at least one
Lamp sends the instruction performing flash of light；Preflashing data can be sent at least one connection by emitter receptor
Flash lamp.
4. according to the camera flashing light system described in claim 1, it is characterised in that described emitter
Flash exposure power data after the adjustment sent includes at least one flash lamp sends the finger performing flash of light
Order, and the flash exposure power execution that this flash of light provides according to the flash exposure power data after adjusting.
Camera flashing light system the most according to claim 1, it is characterised in that described emitter bag
Include: an emitter connection member, be used for connecting emitter and camera, enable emitter to be launched by this
Device connection member reads the camera output data that camera sends, and camera output data include that at least one is away from sending out
The flash exposure power data of the flash lamp of emitter；One user input unit, is used for receiving camera flash of light
The user input data of lamp system user, user input data includes the flash exposure at least one flash lamp
The regulation of power data；One transmitter unit, the flash exposure power after adjusting is sent at least one
Individual connection has the flash lamp of receptor.
6. according to the camera flashing light system described in claim 5, it is characterised in that described user
Input block is used for receiving user input data, and user input data includes the tune to flash exposure power data
Joint, this regulation is used for a group or more flash lamp away from emitter, and each group includes one or one
Above flash lamp；Camera output data include a set of flash exposure power data, and these data are used for one group or one
Organize each group in above flash lamp；User input data includes the regulation often organizing flash exposure power data.
7. according to the camera flashing light system described in claim 6, it is characterised in that described emitter
Send the flash exposure power data after often group adjusts respectively.
8. according to the camera flashing light system described in claim 5, it is characterised in that described emitter
Can read, by emitter connection member, the preflashing data that camera sends, preflashing data include at least one
Flash lamp sends the instruction performing flash of light, and preflashing data can also be sent at least one even by described emitter
It is connected to the flash lamp of receptor.
Camera flashing light system the most according to claim 5, it is characterised in that described emitter is sent out
Flash exposure power data after the adjustment sent includes at least one flash lamp sends the instruction performing flash of light,
And the flash exposure power that this flash of light provides according to the flash exposure power data after adjusting performs.
10. one kind utilizes camera flashing light system according to claim 1 to carry out remote adjustment flash of light
The method of exposure power, the method includes: receives camera output data from camera and exports to emitter, camera
Data include at least one flash exposure power data away from the flash lamp of camera；User is received defeated from user
Entering data to emitter, user input data includes the flash exposure power data at least one flash lamp
Regulation；Flash exposure power after adjusting is sent at least one connection the flash lamp of receptor,
The step receiving camera output data includes receiving camera output data, and camera output data include a set of
Flash exposure power data, these data for a group or more away from each group of flash lamp of emitter,
Each group includes one or more flash lamies；The step receiving user input data includes that reception user is defeated
Entering data, user input data includes the regulation often organizing flash exposure power data.
11. camera flashing light system according to claim 10 carries out remote adjustment flash exposure power
Method, be further characterized in that, the flash exposure power after adjusting is sent at least one connection and has reception
The step of the flash lamp of device includes the flash exposure power data after sending often group adjustment respectively.
12. camera flashing light systems according to claim 10 carry out remote adjustment flash exposure power
Method, be further characterized in that, preflashing data be sent to emitter from camera, it is right that these preflashing data include
At least one flash lamp sends the instruction performing flash of light, and preflashing data are sent at least one connection reception
The flash lamp of device.
13. camera flashing light systems according to claim 10 carry out remote adjustment flash exposure power
Method, be further characterized in that, at least one flash lamp sent the instruction performing flash of light, and this flash of light presses
The flash exposure power provided according to the flash exposure power data after adjusting performs.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/527,916 | 2012-06-20 | ||
| US13/527,916 US8824881B2 (en) | 2011-09-19 | 2012-06-20 | Camera flash systems and methods for adjusting flash exposure power |
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| Publication Number | Publication Date |
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| CN103076708A CN103076708A (en) | 2013-05-01 |
| CN103076708B true CN103076708B (en) | 2016-08-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015038061A1 (en) | 2013-09-16 | 2015-03-19 | Profoto Ab | Method, transmission unit, system and computer program for wireless communication between a camera and several remote flash devices |
| WO2015038047A1 (en) | 2013-09-16 | 2015-03-19 | Profoto Ab | Method, transmission unit, system and computer program for wireless communication between a camera and at least one remote flash device |
| WO2015047150A1 (en) * | 2013-09-27 | 2015-04-02 | Profoto Ab | Method, transmission unit, system and computer program for wireless communication between a camera and at least one remote flash device |
| CN106713736A (en) * | 2015-11-18 | 2017-05-24 | 西安中兴新软件有限责任公司 | Multi-machine flashlight control method and terminal equipment |
| EP3850425A4 (en) | 2018-09-11 | 2022-06-08 | Profoto Aktiebolag | A computer implemented method and a system for coordinating taking of a picture using a camera and initiation of a flash pulse of at least one flash device |
| CN113412451B (en) | 2019-02-01 | 2023-05-12 | 保富图公司 | Housing for an intermediate signal transmission unit and intermediate signal transmission unit |
| CN112888105A (en) * | 2021-03-16 | 2021-06-01 | 深圳市神牛摄影器材有限公司 | Power control apparatus of flash lamp and control method thereof |
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| CN1561654A (en) * | 2001-07-30 | 2005-01-05 | 皇家飞利浦电子股份有限公司 | Reducing color segregation in HID lamps |
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| JP3146794B2 (en) * | 1993-10-22 | 2001-03-19 | ミノルタ株式会社 | Flash device |
| JP5358876B2 (en) * | 2006-10-19 | 2013-12-04 | 株式会社ニコン | Camera and external device |
| US8116620B2 (en) * | 2007-09-24 | 2012-02-14 | King Kevin J | Methods and systems to prepare and activate a wireless camera flash by radio |
| US8571400B2 (en) * | 2010-08-05 | 2013-10-29 | Kevin James King | Methods and apparatus for flash intensity value management in a photographic environment |
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| CN1561654A (en) * | 2001-07-30 | 2005-01-05 | 皇家飞利浦电子股份有限公司 | Reducing color segregation in HID lamps |
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