CN1932633B - Camera - Google Patents
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- CN1932633B CN1932633B CN2006101536420A CN200610153642A CN1932633B CN 1932633 B CN1932633 B CN 1932633B CN 2006101536420 A CN2006101536420 A CN 2006101536420A CN 200610153642 A CN200610153642 A CN 200610153642A CN 1932633 B CN1932633 B CN 1932633B
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Abstract
To provide a camera which has a reduced mounting space of a light source and consumes low power. The camera gas an LED light emitting circuit 10 capable of emitting light in at least two stages of luminance, and AF assisting light radiated when measuring a distance to a measurement object by an auto focus function and a self-timer display light displaying that a self-timer function is being executed are emitted from an LED provided in the LED light emitting circuit 10, and luminance of the AF assisting light and that of the self-timer display light are set independently of each other.
Description
Technical field
The present invention relates to a kind of camera, particularly relate to a kind of small-sized and little camera of consumption electric power.
Background technology
In the digital camera of prior art, have for the deficiency of the lightness that remedies subject and send the flashlamp shape value of fill-in light; Have in addition and send blood-shot eye illness and alleviate light, detect autodyning auto heterodyne in the timing of the fill-in light (AF fill-in light) of focus and expression and represent the light source of light.These light sources all are configured on the camera independently of one another.
In recent years, owing to require miniaturization, the lightweight of digital camera and the LCD that is equipped with big picture, just become more and more difficult so will obtain to install the space of these light sources.
In addition, on the books about the prior art that a light source is used for two above purposes at Japanese Patent Application Publication (spy opens) 2003-140236 communique and open (spy the opens clear) 63-44639 of Jap.P..
The content of invention
The invention of putting down in writing in Japanese Patent Application Publication (spy opens) 2003-140236 communique is to alleviate light and the expression of autodyning is only sent by a light-emitting device about photography fill-in light, blood-shot eye illness.But, form light-emitting device owing to wherein used, so its control just becomes complicated by a plurality of light-emitting components.The miniaturization lightweight that is the control circuit of light-emitting device will become difficult.So, the miniaturization lightweight of digital camera integral body also will become difficult.
And the invention of putting down in writing in open (spy the opens clear) 63-44639 of Jap.P. is to send the AF fill-in light and auto heterodyne is represented light with a light-emitting device.But this invention is the part generation scattering that makes the light that light-emitting device sends, and expression light that is used for autodyning with its its.Thus, only need send AF fill-in light and auto heterodyne timing represent light the two one of in, just need cover the unwanted light of the opposing party.But making light scattering and light covered all to waste electric power, thereby is unfavorable for the requirement of power saving.
Thus, prior art does not provide, but not only can reduce the camera of shared space of light source but also power saving.
The present invention is exactly the technical scheme that addresses the above problem.Purpose of the present invention just provides the camera of a kind of not only save space but also power saving.
In order to reach above purpose, the invention provides a kind of like this camera, promptly the feature of this camera is, having can be with at least two kinds of different brightness (the different brightness of notch cuttype) luminous light source, can send from this light source, measure with automatic focusing function from measurand apart from the time irradiation the AF fill-in light, and the auto heterodyne that the expression Self-timer is being carried out represents light, and the brightness of the brightness of AF fill-in light and the expression light of autodyning can be set independently of one another.
In above-mentioned structure, preferred light source comprises light-emitting component and makes electric current to this light-emitting component supply that the illuminating circuit of at least 2 kinds of different numerical value variation of notch cuttype () can be arranged, and, brightness is changed by changing the electric current of supplying with to light-emitting component from illuminating circuit; Further, more preferably light-emitting component is LED.
Preferably in above-mentioned any one structure, all comprise the user interface of accepting user's input, and, at least one side in the brightness of the brightness of AF fill-in light and the expression light of autodyning is set by input from this user interface.Perhaps, preferably have the lightness determinator of the lightness of measuring subject, and, the brightness of AF fill-in light and at least one side who measures of the expression light of autodyning are set according to the measurement result of this lightness determinator.At this, the lightness of subject be meant comprise the focusing object and the focusing object around in all lightnesses of interior photography.
Preferably a kind of like this picture camera promptly in the middle of above-mentioned any structure, has photographic element, and generates corresponding to the view data from the next image light of subject with this photographic element.
The invention provides a kind of power supply that can reduce and take up space, can save the camera of power consumption simultaneously.
Description of drawings
Figure 1A, 1B and 1C are the schematic appearance of the digital camera of embodiments of the invention,
1A is top figure, and 1B is a prior figures, and 1C is a back view.
Fig. 2 is the functional schematic of the digital camera of most preferred embodiment of the present invention.
Fig. 3 also is the synoptic diagram of function of digital camera of the preferred forms of expression invention.
Fig. 4 is the structural representation of an example of LED illuminating circuit.
Fig. 5 is another routine structural representation of expression LED illuminating circuit.
Fig. 6 is the figure of one of operation workflow of digital camera of the present invention example.
Fig. 7 is another routine synoptic diagram of the operation workflow of digital camera of the present invention.
Fig. 8 is the synoptic diagram of an example again of the operation workflow of digital camera of the present invention.
Embodiment
Below, with reference to the accompanying drawings, embodiments of the present invention are illustrated.The following description is for a better understanding of the present invention, scope of the present invention is not carried out any restriction.
Figure 1A, 1B and 1C have represented the structure of the digital camera of preferred forms of the present invention.This camera is provided with camera lens part 7, range cells 5 and telepilot light receiving portion 6 in its front.In addition, at the back side of digital camera, dispose optical finder 4, AF LED8, flashlamp LED9 and LCD monitor 110.In addition, on digital camera, dispose auxiliary LCD monitor 1.Further, in the side of digital camera, be provided with storage card/battery cover 2 that the groove of storage card battery is taken in protection.
Telepilot light receiving portion 6 is the interfaces (interface) that are used for accepting the control signal sent here from telepilot (not drawing the figure).Camera lens part 7 is the optical systems that make from the next image light imaging on photographic element of subject.
Further, on digital camera and on the back side, be provided with exposure shutter SW1, mode knob, zoom key SW3 (wide-angle) and SW4 (looking in the distance), autos heterodyne/cancel key SW5, Menu key SW6, on/various switches such as flashlamp switch SW 7, right button SW8, display switch SW9, descend/continued operation key SW10, a left side/image acknowledgement key SW11, OK key SW12 and power switch SW13.
Exposure switch SW1 is a switch of carrying out photography.Mode knob SW2 is the key that switches camera style (Av mode, Tv mode, program mode (PM), manual mode etc.).Zoom key SW3 and SW4 are the keys of adjusting the visual angle.Auto heterodyne/cancel key SW5 as to whether carrying out the key that Self-timer is selected, still, in image is confirmed, has the function of the view data elimination that will select when photography.The size of the view data that Menu key SW6 generates for to the sensitivity of photographic element and photography time the and the key that kind is selected.Flashlamp switch SW 7 is switches that the mode (automatically, forcing to glisten, alleviate blood-shot eye illness etc.) to flashlamp is switched.Right button SW8 selects in the picture cursor to be moved right at menu screen and image, or the key that image is moved to the left.Monitor switch SW9 makes the switch that switches between being illustrated in out/closing of light-emitting diode display 10.Down/continued operation switch SW 10 is when photography, work the function that the continued operation mode is switched between opening/closing, and select in the picture at menu screen or image, rising moves down cursor, the function .OK key SW12 that picture is scrolled up makes in menu screen selecteed function carry out, or rises and make the function of in eliminating picture the elimination of view data being admitted.Power key SW13 works the function that the power supply that makes digital camera switches between opening/closing.
Fig. 2 and Fig. 3 have represented the function of the digital camera of present embodiment.
Camera lens part 7 comprises
Zoom (ZOOM) optical system 71, this system is made up of zoom lens 71a and zoom driving motor 71b that the optical imagery of subject is taken in;
Focused Optical system 72, this system is made up of condenser lens 72a and focusing CD-ROM drive motor 72b;
Light quantity adjusting part 73, this assembly is made up of constrictor 73a and constrictor CD-ROM drive motor 73b;
In ROM108, store the control program and the parameter of the symbol record that can be familiar with cpu package 1034. in addition, these parameters also can be stored in the internal storage 120.Connect with the mains at digital camera one, program just is downloaded in the primary memory (not drawing in the accompanying drawing), and cpu package 1034 is just controlled the running of device each several part according to this program.Meanwhile, controlling needed data temporarily is kept among this machine (Local) SRAM1044 in ROM107 and the digital camera processor described later 104.If the quick ROM that employing can rewrite as ROM108, just can upgrade the parameter of control program and control usefulness, thereby easily promote the function of digital camera.
CCD101 is for carrying out optical imagery the solid photographic element of light-to-current inversion, and it obtains vertical synchronizing signal (VD) and horizontal-drive signal (HD) and by 1043 controls of cpu package piece from a CCD control part 1041.
F/E (front end)-IC102 comprises, is used for carrying out two resamplings with the CDS1021 that removes image disruption, the TG (signal generator on opportunity) 1024 that gains the AGC1022 that adjusts, the A/D1023 that carries out digital signal conversion and produce the driving signal on opportunity of F/E-IC102.
To carry out that white balance is set and γ sets from the data that CCD101 is sent to F/E-IC102, and as mentioned above, a CCD Control Component 1041 of supply VD signal and HD signal;
Carry out the 2nd CCD Control Component 1042 by filtration treatment to the conversion of brightness aberration;
The cpu package 1043 of the running of control device each several part;
The local memory (Local SRAM) 1044 that necessary data are temporarily deposited will be controlled;
Carry out the USB assembly 1045 of usb communication with terminal;
The serial assembly 1046 that carries out serial communication with terminal;
Carry out the JPEG CODEC assembly 1047 of JPEG compression elongation;
Handle size expansion that makes view data or the RESIZE assembly 1048 that dwindles by inserting;
Is the TV signal display module 1049 of optical signal for view data can be shown on the external display of LCD monitor or TV etc. with conversion of signals; And
The storage card assembly 10410 that storage storage card of shot image data and PCMCIA etc. are controlled.
SDRAM103 temporarily preserves usefulness to view data when carrying out Flame Image Process in digital camera processor 104.The view data of preserving is for example to have
Send by being accepted from CCD101, and carried out " the RAW-RGB view data " that white balance (white balance) is set the γ set condition at the first ccd signal processing components, 1041 places through F/E-IC102;
Carried out " the YUV view data " of the conversion of brightness data chromatism data at the 2nd CCD Control Component 1042 places;
Carried out at JPEG CODEC assembly 1047 " the jpeg image data " of JPEG compression etc.
Storage card insertion groove 121 is in order to insert the groove that desirable storage card inserts.Internal storage 120 is occasions of not inserting memory card slot 121 at storage card, and shot image data is carried out memory storing.
Optical signal AMP118 is that be used for making will be from TV signal indication assembly 1049 output optical signals, and the amplifier that carries out 75 Ω impedance conversions, optical signal socket 119 are to be used for and the consecutive terminal of outside display device such as outside TV.
SUB-CPU109 is the CPU that places a chip to form ROMRAM.The output signal of switch-unit SW1-SW13 and telepilot light receiving portion 6 is used as user's operation signal and transports to cpu package 1043.Be transformed to the control signal of (will narrate in the back) auxiliary LCD 1, AF LED8, flashlamp LED9, hummer 113 and exported from the state of the camera of cpu package 1043 output.
Operating key SW1-SW13 is the interface that the user operates.Telepilot light receiving portion 6 is to be used for accepting by user's operation the remote signal sent from telepilot (not drawing the figure).
The SoundRec assembly comprises, the microphone 1151 that the user imports voice signal, the amplifier 1152 that the voice signal of input is amplified and the sound store circuit 1153 that the voice signal that amplifies is stored.
The sound reproduction assembly comprises, with the voice signal of storage be transformed into can from the sound reproduction circuit 1161 of the signal of loudspeaker output, will carry out conversion the voice signal sound equipment AMP1162 that amplifies and loudspeaker are driven, and loudspeaker of sounding according to the signal of input.
Fig. 4 has represented the structure of LED illuminating circuit 10.Wherein, by by the drive signal sent of control IC with N transistor (hereinafter to be referred as transistor) (transistor Tr A, transistor Tr B ... transistor N) the some driving in (N is the integer more than 2).The resistance R a, the Rb that between each transistor AND gate LED, dispose ... the resistance value of Rn is all different, so according to driven transistorized difference, the electric current that is fed to LED can change.Thus, according to transistor Tr A, TrB ... that is driven the brightness that just can make LED stepped variation takes place among the TrN.
The structure of the LED illuminating circuit 10 when Fig. 5 formula is used the IC of high driving ability.Control IC possesses N (A-N) (N is the integer more than 2) communication port, and each communication port is connected with LED by Ra-Rn respectively.The resistance value of resistance R a-Rn is all inequality.This circuit structure is directly LED not to be driven by transistor, and still, that the difference according among the employed communication port A-N also makes the variation (being the variation of the notch cuttype of different numerical value) of the brightness stage of development formula of LED equally with Fig. 4.
Fig. 6, Fig. 7 and Fig. 8 have represented the example of flow process of running of the digital camera of present embodiment.
As use operating portion 103 or carry out the words (step S101/ is) of auto heterodyne in the auto heterodyne mode of initial setting, lightness (step S102) (following omission " step " two words are called for short S) around then digital camera processor 104 is measured according to the AE information (autoexpose) of coming from CCD101.Then, whether digital camera processor 104 is according to the AE information that obtains data and come from CCD101 of coming from ROM108, to needing the AF fill-in light to judge (S103).
If AF fill-in light necessity (S103/ is), then the system processor of digital camera processor 104 is obtained mode (interval of light on and off) that the setting content that is stored among internal storage 120 or the ROM108 (apart from the time of taking) and point go out (S104).Then, select to make the luminous illuminating circuit (S105) of light-emitting component of LED illuminating circuit 10 with the brightness that adapts to this state.Then, make the illuminating circuit of selection be adapted to a little the to go out pulse signal (S106) of pattern (interval that point goes out), and signal is sent to LED illuminating circuit 10, make LED element bright or go out (S107).
The pattern that goes out as point, preferably along with apart from the shortening of time of photography, the interval that point goes out shortens.For example, as will carry out every 1 second light a lamp and turn off the light speed up, just can make the user feel the time of distance photography.
The luminous occasion that is not over (S108/ is not) at the AF fill-in light monitors (S109) the luminous opportunity of 104 pairs of AF fill-in lights of digital camera processor.As also just not returning S106 to luminous opportunity (S109/No), the digital camera processor was put the LED element of LED illuminating circuit 10 repeatedly and is gone out before the AF auxiliary light.
As having arrived the opportunity (S109/ is) of AF auxiliary light, digital camera processor 104 just changes illuminating circuit, so that the AF fill-in light obtains sufficient brightness (S110), afterwards, corresponding with luminous opportunity, make the LED of LED illuminating circuit 10 luminous, AF lights a lamp with LED, obtains AF information (apart from the range information of subject) by range finding assembly 5.
After this, not to be over as yet (S112/ is not), to represent that the point of the LED element of LED illuminating circuit 10 goes out and carries out (S106, S107, S108/ are) repeatedly in order autodyning as the action of autodyning.As the action of autodyning ends (S112/ is), and subject is taken, and generates view data (S113).
On the other hand, as not needing AF fill-in light (S103 not), the system file processor of digital camera processor 104 is obtained the setting content of storing (time that distance is taken) and is put the pattern (interval time that point goes out) that goes out (S114) in internal storage 120 or ROM108.Then, select to make the luminous illuminating circuit (S115) of light-emitting component of LED illuminating circuit 10 with the brightness that is suitable for this state.Then, make the illuminating circuit of selection be adapted to the pulse signal (S116) of lighting-cuting type sample (interval that point goes out), and signal is sent to LED illuminating circuit 10, make the LED element put go out (S117).The pattern that goes out as point, preferably along with apart from the shortening of time of photography, the interval that point goes out shortens.For example, as will carry out every 1 second light a lamp and turn off the light speed up, just can make the user feel the time of distance photography.
After this, be not over as yet (S118/ is not) as the action of autodyning, for the expression of autodyning, the point of the LED element of LED illuminating circuit 10 goes out and carries out (S116, S117, S118/ are) repeatedly.As the action of autodyning ends (S118/ is), and subject is taken, and generates view data (S119).
On the other hand, as not using auto heterodyne occasion (S101/ is not), digital camera processor 104 is according to the lightness (S102) of the AE information measurement subject of coming from CCD101.Then, whether digital camera processor 104 foundations are storer and the next AE information that obtains data and come from CCD101 of ROM108 internally, to needing the AF fill-in light to judge (S121).
If AF fill-in light necessity (S121/ is), then the system processor of digital camera processor 104 is obtained the setting content that is stored among internal storage 120 or the ROM108 (data of that lamp circuit are selected in the relevant lightness that obtains from AE) (S122).Then, select to make 10 the luminous illuminating circuit (S123) of light-emitting component of LED illuminating circuit with the brightness that adapts to this state.Then, make the illuminating circuit of selection be adapted to a little the to go out pulse signal at pattern (interval that point goes out), and signal is sent to LED illuminating circuit 10, make the bright lamp of LED element, obtain AF information (apart from the distance of subject) (S124) with range finding assembly 5.Then,, subject is photographed, generate view data (S125) based on the AF information that obtains.
Do not need (S121/ is not) as the AF fill-in light, subject is photographed, generate view data (S126)
So, LED is lit a lamp, visual recognition is improved with brightness based on the bright degree of subject.Thus, as the time according to the distance photography, when the speed of lighting a lamp was changed, the person of being taken just was easy to confirm the time of distance shooting.In addition, the brightness that making autodynes represents light and the brightness of AF fill-in light change according to the lightness of subject, can lower the consumption of electric power.
In addition, in above-mentioned action example, be measuring the lightness of subject by the AE function, and to make the luminous occasion of LED based on the brightness corresponding to this lightness be example.But,, also can make the user can select brightness by using various keys.For example, can adopt the structure of the brightness options button of at least 1 the key double as LED that makes among the key unit SW1-SW13.Select operation with key, any selection of the brightness of the LED possibility that also just becomes based on this brightness.The brightness of operating such LED selects to use key, user to select the monochrome information of the LED that determines just to be stored among internal storage 120 or the ROM108.
Be set at the auto heterodyne mode, and the occasion (S103/ is) of AF fill-in light necessity, as the brightness of operating above-mentioned LED selects to use key, when in S104, obtaining setting content, the monochrome information of the LED that the user will be set obtains simultaneously with being stored in the pattern (interval that point goes out) that setting content (apart from the time of photography) among internal storage 120 or the ROM108 and point go out, and selects to make the luminous illuminating circuit (S105) of LED element of lightness range finding assembly 5.
Be set at the auto heterodyne mode, and the occasion (S103/ is not) that the AF fill-in light is unnecessary, as the brightness of operating above-mentioned LED selects to use key, in S114, obtain in the pattern (interval that point goes out) that the setting content that is stored among internal storage 120 or the ROM108 (apart from the time of photography) and point go out, obtain the monochrome information of the LED of user's setting from storer 120 or ROM108, and select to make the luminous illuminating circuit (S115) of LED element of LED illuminating circuit 10.
Occasion (S121/ is) in AF fill-in light necessity, as the brightness of operating above-mentioned LED selects to use key, in S122, obtain in the setting content, the monochrome information of the LED that the user is set obtains among storer 120 or the ROM108 internally, thereby selects to make the luminous illuminating circuit of LED element (S123).
So, just can make LED luminous with user's the brightness of being liked.
In addition, above embodiment implements an example of the present invention, the present invention is not formed any qualification.
For example, the speed of lighting a lamp of the LED that the foregoing description is represented, the control method of brightness and the structure of circuit etc. are an example after all, the present invention are not formed any restriction.
In above embodiment, digital camera is illustrated with photographic element.But self-evident the present invention also is applicable to roll film camera.
Thus, the present invention can have various modification, but this can not depart from the scope of the present invention.
Claims (10)
1. a camera is characterized in that, comprises carrying out luminous light source with at least 2 kinds of different brightness; Send from this light source
With automatic focusing function measure the distance ranging object apart from the AF fill-in light of time irradiation and,
The auto heterodyne of expression Self-timer well afoot is represented light;
Described AF fill-in light and described auto heterodyne represent that the brightness of light can set independently of one another.
2. camera according to claim 1, it is characterized in that described light source have light-emitting component and
Make the electric current of supplying with this light-emitting component that the illuminating circuit of at least 2 kinds different numerical value be arranged,
And brightness is changed by the electric current that is fed to described light-emitting component from described illuminating circuit is changed.
3. according to the camera on the described ground of claim 2, it is characterized in that light-emitting component wherein is LED.
4. according to claim 1, the camera on 2 or 3 described ground, it is characterized in that having the user interface that receives user's operation, by the input operation of carrying out between this user interface, at least one side of the brightness that can represent light to the brightness and the described auto heterodyne of described AF fill-in light sets.
5. according to each described camera of claim 1-3, it is characterized in that, lightness determinator with lightness of measuring subject, and according to the measurement result of this lightness determinator, at least one side of the brightness that the brightness and the described auto heterodyne of described AF fill-in light are represented light sets.
6. camera according to claim 4, it is characterized in that, lightness determinator with lightness of measuring subject, and according to the measurement result of this lightness determinator, at least one side of the brightness that the brightness and the described auto heterodyne of described AF fill-in light are represented light sets.
7. according to each the described camera among the claim 1-3, it is characterized in that having imaging apparatus, generate by this imaging apparatus based on view data from the image light of subject.
8. camera according to claim 4 is characterized in that having imaging apparatus, is generated by this imaging apparatus based on the view data from the image light of subject.
9. camera according to claim 5 is characterized in that having imaging apparatus, is generated by this imaging apparatus based on the view data from the image light of subject.
10. camera according to claim 6 is characterized in that having imaging apparatus, is generated by this imaging apparatus based on the view data from the image light of subject.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP263811/05 | 2005-09-12 | ||
| JP2005263811A JP2007078823A (en) | 2005-09-12 | 2005-09-12 | Camera |
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| Publication Number | Publication Date |
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| CN1932633A CN1932633A (en) | 2007-03-21 |
| CN1932633B true CN1932633B (en) | 2011-04-20 |
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| CN2006101536420A Active CN1932633B (en) | 2005-09-12 | 2006-09-12 | Camera |
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| CN (1) | CN1932633B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5941630B2 (en) * | 2011-07-14 | 2016-06-29 | オリンパス株式会社 | camera |
| JP6512768B2 (en) * | 2014-08-08 | 2019-05-15 | キヤノン株式会社 | Lighting device, imaging device and camera system |
| JP7051613B2 (en) * | 2017-11-06 | 2022-04-11 | キヤノン株式会社 | Image pickup device and its control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4908649A (en) * | 1986-08-12 | 1990-03-13 | Minolta Camera Kabushiki Kaisha | Automatic focus detection device for use in a camera |
| JP2005077934A (en) * | 2003-09-02 | 2005-03-24 | Nikon Corp | Auxiliary light projection device and camera with same |
| JP2005249960A (en) * | 2004-03-02 | 2005-09-15 | Canon Inc | Imaging apparatus and auxiliary light usage in the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0777733A (en) * | 1993-06-30 | 1995-03-20 | Minolta Co Ltd | Self-timer device for camera |
| JP2001324667A (en) * | 2000-05-16 | 2001-11-22 | Canon Inc | Image pickup device and its control method |
| JP2002031833A (en) * | 2000-07-17 | 2002-01-31 | Nikon Corp | Camera and flashing device |
| JP2005084368A (en) * | 2003-09-09 | 2005-03-31 | Konica Minolta Photo Imaging Inc | Cellular phone with camera |
-
2005
- 2005-09-12 JP JP2005263811A patent/JP2007078823A/en active Pending
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- 2006-09-12 CN CN2006101536420A patent/CN1932633B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4908649A (en) * | 1986-08-12 | 1990-03-13 | Minolta Camera Kabushiki Kaisha | Automatic focus detection device for use in a camera |
| JP2005077934A (en) * | 2003-09-02 | 2005-03-24 | Nikon Corp | Auxiliary light projection device and camera with same |
| JP2005249960A (en) * | 2004-03-02 | 2005-09-15 | Canon Inc | Imaging apparatus and auxiliary light usage in the same |
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| Publication number | Publication date |
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| JP2007078823A (en) | 2007-03-29 |
| CN1932633A (en) | 2007-03-21 |
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