CN101813870B - Flash unit - Google Patents

Abstract

A flash unit is provided which can effectively irradiate the object with flash light from the flash source and will not bring any trouble to the shoot, at the same time, it can adjust the color temperature. Said flash unit has flash source (12) and reflector (13). The flash light emitted from the flash source (12) and the reflex reflected from said reflector (13) emits forward. And said flash unit has changeable color distributing mechanism (16, 17, 18, 19) which changes the color distribution on the reflecting surface of reflector (13).

Description

Flash unit

Technical field

The present invention relates to have the flash unit of the function of the colour temperature of regulating flash light.

Background technology

When taking pictures, expectation is identical with the tone of the sunshine on daytime towards the tone of the light of being taken the photograph the body irradiation, and, use the index of colour temperature as this tone.Sunshine has 5, the colour temperature of 500K, and the light of flash unit is also roughly identical with sunshine generally speaking, has 5, the colour temperature of 500K.But when taking pictures, many times there is bigger difference in the colour temperature of the colour temperature of surrounding environment and flash light (sunshine), in this case, and the colorrendering quality variation of image of many times regenerating and the photo that prints.

Yet,, proposed to have the flash unit of function with the colour temperature of regulating flash light in order to improve the precision of the color reproduction in this printing in the past.For example there is following flash unit: between light-emission window and flashlamp discharge tube, prepare the light filter of the different a plurality of sheets of light wavelength absorption characteristic, can regulate the colour temperature of flash light (with reference to patent documentation 1) through switching this light filter.And; Also there is following flash unit: the light filter that the different colours characteristic is set in the place ahead of two xenon pipes; And between each xenon pipe and corresponding light filter, the liquid crystal that can adjust concentration is set; Adjust the amount of light of sending and see through the different colours of light filter from two xenon pipes through the concentration of adjustment liquid crystal, adjust the colour temperature (with reference to patent documentation 2) of the flash light that these light mix thus.

[patent documentation 1] TOHKEMY 2000-284347

[patent documentation 2] japanese kokai publication hei 7-120816

But; Above-mentioned the former's flash unit (patent documentation 1) and is not suitable for the type of moving with macro-energy that is arranged with the camera branch and is assemblied in the enterprising enforcement usefulness of camera though can realize in the smaller flashlamp of the energy of that kind in being built in camera.Near flashlamp light-emission window be because near light source (xenon discharge tube), and by the light of mirror reflects once optically focused, be the high place of beam density therefore.Consequently, because the ultrared effect that contains in the flash light, near the high temperature that becomes the light-emission window, high temperature thereby the conversion filter for colour temperature that utilizes plastic sheet etc. to be made into also becomes.Particularly when on conversion filter for colour temperature, being attached with dirt etc., dirt can generate heat because of infrared ray, damages conversion filter for colour temperature sometimes.Be difficult to realize requiring to have the conversion filter for colour temperature of this high-fire resistance.

And, in the latter's flash unit (patent documentation 2),, therefore not only become expensive, and flash unit maximizes owing to be provided with two xenon discharge tubes.In addition; Two light that radiate from the xenon discharge tube that is disposed at diverse location form two different shadows; Particularly taken the photograph under the approaching situation of body; Understand because two the different flash lights of colour temperature that send from flash unit present two different shadows etc., thereby can cause harmful effect photography.And, therefore same owing to dispose light filter and the liquid crystal that can adjust concentration in the place ahead of each xenon discharge tube with above-mentioned existing flash unit, there is the possibility of this light filter and liquid crystal cause thermal damage.

Summary of the invention

The present invention is exactly in light of this situation and accomplishes, its purpose be to provide a kind of each several part can cause thermal damage, can adjust the flash unit of the colour temperature of flash light effectively.

Flash unit involved in the present invention has flash of light source and catoptron; The flash of light that send in this flash of light source and the reflected light by said mirror reflects of this flash of light penetrate towards the place ahead; Wherein, Said flash unit forms the structure with distribution of color changeable mechanism, and said distribution of color changeable mechanism changes the distribution of color of the reflecting surface of said catoptron.

Through this structure because the distribution of color of the reflecting surface of catoptron changes, therefore can be according to this distribution of color, change the flash of light of sending from the flash of light source, by the catoptrical colour temperature of the reflecting surface reflection of said catoptron.Therefore, needn't use conversion filter for colour temperature etc., can be through changing the colour temperature that said catoptrical colour temperature adjustment comprises this catoptrical ejaculation light (flash light).

In flash unit involved in the present invention; Said catoptron possesses first mirror portion and second mirror portion that is disposed at the rear side of this first mirror portion; Form porose portion in said first mirror portion; Be formed with painted portion in said second mirror portion with predetermined color dyes; Said distribution of color changeable mechanism has the catoptron travel mechanism that said first mirror portion and said second mirror portion are relatively moved, and makes said painted the area change of exposing from the said hole portion of said first mirror portion through utilizing said catoptron travel mechanism, changes the distribution of color of the reflecting surface of said catoptron.

Through this structure; Through first mirror portion and second mirror portion being relatively moved make painted area change of second mirror portion of exposing from the hole portion that is formed at first mirror portion; Can change the distribution of color of the reflecting surface of catoptron thus, therefore can adjust the colour temperature that penetrates light through said first mirror portion and second mirror portion are relatively moved.

And in flash unit involved in the present invention, said catoptron travel mechanism makes said second mirror portion move with respect to fixing said first mirror portion.

Through this structure,, can adjust the colour temperature that penetrates light thus through second mirror portion being moved change the distribution of color of the reflecting surface of catoptron.

And, in flash unit involved in the present invention, in said painted the processing of having implemented to be used to make the flash of light scattered reflection that comes from said flash of light source of said second mirror portion.

Through this structure, owing to, therefore can penetrate colour temperature light more uniformly painted the reflected light diffusion of locating to reflect.

Further; Be formed with predetermined regularly arranged a plurality of hole portion in said first mirror portion; Be formed with and said a plurality of hole corresponding a plurality of painted portion of portion in said second mirror portion, make painted area change of the correspondence that each hole portion from the said a plurality of hole portion of said first mirror portion exposes through said catoptron travel mechanism.

Through this structure; Painted area change of second mirror portion of exposing through each hole portion that first mirror portion and second mirror portion is relatively moved make from a plurality of hole portion that is formed at first mirror portion, thus the distribution of color of the reflecting surface of catoptron can be changed.

And, in flash unit involved in the present invention, be formed with a plurality of painted portion with different color dyes in said second mirror portion.

Through this structure, can expose a plurality of painted portions from the hole portion that is formed at first mirror portion, therefore can carry out the colour temperature adjustment of wider scope.

Further, in flash unit involved in the present invention, said a plurality of painted comprises: the first painted portion that is coloured to first color; With the second painted portion, it is coloured to catoptrical colour temperature second color higher than the catoptrical colour temperature of said first color.

Through this structure; Painted area of first color of second mirror portion that can expose from the hole portion that is formed at first mirror portion through adjustment; Change distribution of color based on first color, and, can be through painted area of adjustment second color that portion exposes from said hole; Change distribution of color, therefore can carry out the colour temperature adjustment of wider scope based on second color.

Said first color is the predetermined color of red colour system, and said second color is the predetermined color of green system.

And; In flash unit involved in the present invention; Said catoptron travel mechanism make said first mirror portion and second mirror portion relatively straight line move; Be formed at said first painted of said second mirror portion with said second painted each hole portion that is assigned in the said a plurality of hole portion that is formed at said first mirror portion; And arranging along the direction that this straight line moves more than or equal to the interval of the width of hole portion on said straight line moving direction that it was assigned with, the width on said first painted and second painted each the comfortable said straight line moving direction is more than or equal to the width of hole portion on said straight line moving direction that they were assigned with.

Through this structure; Through make first mirror portion and second mirror portion relatively straight line move; It is whole to make first painted area of second mirror portion that each hole from a plurality of holes that are formed at first mirror portion exposes be changed to this hole continuously from zero; And it is whole to make second painted area of second mirror portion that each hole from a plurality of holes that are formed at first mirror portion exposes be changed to this hole continuously from zero.

Further, in flash unit involved in the present invention, said flash unit has: the color temperature information generation unit, and it generates the color temperature information of expression colour temperature; And action control unit, it makes said distribution of color changeable mechanism action, so that the distribution of color of the reflecting surface of said catoptron becomes and the corresponding distribution of color of being confirmed by the color temperature information that obtains through said color temperature information generation unit of colour temperature.

Through this structure, owing to can the distribution of color control of the reflecting surface of catoptron be become and the corresponding distribution of color of being confirmed by the color temperature information that generates of colour temperature, so can penetrate light by the definite colour temperature of the color temperature information of said generation.

And in flash unit involved in the present invention, said flash unit has: the color temperature information generation unit, and it generates the color temperature information of expression colour temperature; And action control unit; It makes the action of said catoptron travel mechanism so that painted area of said second mirror portion of exposing from the said hole portion of said first mirror portion becomes following size: this size make the distribution of color of reflecting surface of said catoptron become with by the definite corresponding distribution of color of colour temperature of the color temperature information that obtains through said color temperature information generation unit.

Through this structure; Owing to can painted of second mirror portion of exposing from the hole portion of first mirror portion area control be become following size: this size makes the distribution of color of reflecting surface of catoptron become and the corresponding distribution of color of being confirmed by the colouring information that generates of colour temperature, so can penetrate the light by the definite colour temperature of the color temperature information of said generation.

And; In flash unit involved in the present invention; Said action control unit has the relative position detecting unit; The relative position of said first mirror portion of said relative position detection and said second mirror portion; According to by this relative position detection to relative position make the action of said catoptron travel mechanism so that painted area of said second mirror portion of exposing from the said hole portion of said first mirror portion becomes following size: this size make the distribution of color of reflecting surface of catoptron become with by the definite corresponding distribution of color of colour temperature of said color temperature information.

Through this structure, can adjust the colour temperature that penetrates light accordingly with the relative position of first mirror portion and second mirror portion.

Further; In flash unit involved in the present invention; Said color temperature information generation unit has the colour temperature detecting unit; The colour temperature of the surrounding environment light of said this flash unit of colour temperature detection, said color temperature information generation unit generate expression by this colour temperature detection to the color temperature information of colour temperature.

Through this structure, can penetrate light with the colour temperature of the colour temperature same degree of surrounding environment light.

And; In flash unit involved in the present invention, dispose lens in the place ahead in said flash of light source, said flash unit also has zoom mechanism; Said zoom mechanism drives said flash of light source and said catoptron between first state and second state; Under said first state, the range of the ejaculation light that penetrates through said lens is maximum, under said second state; The range of said ejaculation light is minimum; Said zoom mechanism comprises the actuating mechanism portion of appending, and after said flash of light source and said catoptron arrived the arbitrary state in first state and second state, this appended that actuating mechanism portion carries out predetermined actions and the action that do not promote said flash of light source and said catoptron; Said zoom mechanism has transmission mechanism; Said transmission mechanism combines said actuating mechanism portion and the said distribution of color changeable mechanism of appending, and the power that is produced by the said action of appending actuating mechanism portion in the said zoom mechanism is delivered to said distribution of color changeable mechanism via said transmission mechanism, thereby this distribution of color changeable mechanism changes the distribution of color of the reflecting surface of said catoptron.

Through this structure; After flash of light source and catoptron arrive the arbitrary state in the second minimum state of the first maximum state of the range that penetrates light and the range that penetrates light; The actuating mechanism portion of appending of zoom mechanism carries out predetermined actions; This action is delivered to the distribution of color changeable mechanism via transmission mechanism, and thus, the distribution of color of the reflecting surface in the reflecting surface changes.

In flash unit involved in the present invention, the said actuating mechanism portion of appending has: action component, and it bears the power of said zoom mechanism and combines with said transmission mechanism; And locking mechanism; When said flash of light source and said catoptron are driven between said first state and said second state; This locking mechanism locks said action component, and after said flash of light source and said catoptron arrived the arbitrary state in said first state and said second state, this locking mechanism was removed said lock-out state; Said action component behind the latch-release bears the power of said zoom mechanism, thereby carries out said predetermined actions.

Through this structure; When flash of light source and catoptron are driven between first state and second state; The action component that appends actuating mechanism portion is locked in zoom mechanism; After said flash of light source and said catoptron arrived the arbitrary state in first state and second state, the locking of said action component was disengaged, thereby this action component carries out predetermined actions.And then the predetermined actions of this action component is delivered to the distribution of color changeable mechanism via transmission mechanism, and thus, the distribution of color of the reflecting surface in the catoptron changes.

Further; In flash unit involved in the present invention; Said flash unit has maintaining part; Said maintaining part keeps said flash of light source and said catoptron, and disposes lens in the place ahead in said flash of light source, and said flash unit has zoom mechanism; Said zoom mechanism makes the advance and retreat action between the primary importance nearest apart from said lens and the said lens of the distance second place farthest of said maintaining part; Said zoom mechanism comprises the actuating mechanism portion of appending, and after said maintaining part arrived the arbitrary position in the said primary importance and the second place, this appended that actuating mechanism portion carries out predetermined actions and the action that do not promote said maintaining part; Said zoom mechanism has transmission mechanism; Said transmission mechanism combines this to append actuating mechanism portion and said catoptron travel mechanism, and the power that is produced by the said action of appending actuating mechanism portion in the said zoom mechanism is delivered to said catoptron travel mechanism via said transmission mechanism, thereby this catoptron travel mechanism relatively moves said first mirror portion and said second mirror portion.

Through this structure; Maintaining part arrive the primary importance nearest apart from lens and apart from the arbitrary position in the lens second place farthest after; The actuating mechanism portion of appending of zoom mechanism carries out predetermined actions; This action is delivered to catoptron travel mechanism via transmission mechanism, and thus, first mirror portion and second mirror portion relatively move.Through relatively moving of this first mirror portion and second mirror portion, painted area change of second mirror portion of exposing from the hole portion that is formed at first mirror portion.

And in flash unit involved in the present invention, the said actuating mechanism portion of appending has: action component, and it bears the power of said zoom mechanism; And locking mechanism; When said maintaining part is advanced and retreat action between the said primary importance and the said second place; This locking mechanism locks said action component, and after said maintaining part arrived the arbitrary position in the said primary importance and the said second place, this locking mechanism was removed said lock-out state; Said action component behind the latch-release bears the power of said zoom mechanism, thereby carries out said predetermined actions.

Through this structure; When maintaining part is advanced and retreat action between the primary importance and the second place; The action component that appends actuating mechanism portion is locked in zoom mechanism; After maintaining part arrived the arbitrary position in the primary importance and the second place, the locking of said action component was disengaged, thereby carries out predetermined actions.And then; The predetermined actions of this action component is delivered to catoptron travel mechanism via transmission mechanism; Thus, first mirror portion and second mirror portion relatively move, painted area change of second mirror portion of exposing from the hole portion that is formed at first mirror portion.

According to flash unit involved in the present invention, the distribution of color of reflecting surface that can be through changing catoptron changes the colour temperature that penetrates light (flash light), when changing this colour temperature; Needn't use the parts of the flash of light (flash light) that absorptions such as light filter send from the flash of light source; And, needn't utilize adjustment such as light filter or liquid crystal to come from the light quantity of a plurality of light sources, therefore; The cause thermal damage of parts such as these light filters or liquid crystal can not take place; Can be given the light that produces from the flash of light source to taking the photograph body effectively, and, can prevent to form a plurality of situation that are accompanied by the shadow of misalignment.

Description of drawings

Fig. 1 is the figure that the basic structure of the related flash unit of first embodiment of the present invention schematically is shown.

Fig. 2 is the figure of structure that structure and the catoptron travel mechanism of the catoptron in the flash unit shown in Figure 1 are shown.

Fig. 3 is the figure that the structure of the motion control system that makes the action of catoptron travel mechanism is shown.

Fig. 4 is the figure that the state of the light that penetrates from flash unit is shown.

Fig. 5 is the figure that the relative position relation (one of which) of first mirror portion and second mirror portion is shown.

Fig. 6 is the figure of relative position relation (its two) that first mirror portion and second mirror portion are shown.

Fig. 7 is the figure of relative position relation (its three) that first mirror portion and second mirror portion are shown.

Fig. 8 is the figure of relative position relation (its four) that first mirror portion and second mirror portion are shown.

Fig. 9 is the figure that the basic structure of the related flash unit of second embodiment of the present invention schematically is shown.

Figure 10 is the stereographic map that the inner concrete structure of flash unit is shown.

Figure 11 is the exploded perspective view that the structure of the catoptron in the flash unit is shown.

Figure 12 is the amplification partial perspective view that the catoptron travel mechanism in the flash unit is shown.

Figure 13 is the sectional view that the structure of flash unit is shown.

Figure 14 illustrates first gear (appending actuating mechanism portion), second gear and the figure of the relative position relation (one of which) of the tooth bar that becomes one with second mirror portion.

Figure 15 illustrates first gear (appending actuating mechanism portion), second gear and the figure of the relative position relation (its two) of the tooth bar that becomes one with second mirror portion.

Figure 16 illustrates first gear (appending actuating mechanism portion), second gear and the figure of the relative position relation (its three) of the tooth bar that becomes one with second mirror portion.

Figure 17 A is the process flow diagram (one of which) that the treatment step of the colour temperature adjusting in the flash unit is shown.

Figure 17 B is the process flow diagram (its two) that the treatment step of the colour temperature adjusting in the flash unit is shown.

Figure 17 C is the process flow diagram (its three) that the treatment step of the colour temperature adjusting in the flash unit is shown.

Label declaration

10,30,50,80: flash unit; 11: light-emission window; 12: xenon discharge tube; 13: catoptron; 14: the first mirror portion; 15: the second mirror portion; 16: motor; 17: screw axis (screw shaft); 18: nut; 19: installation portion; 20: brush; 21: resistor; 22: switch; 23: color temperature sensor; 24: input processing circuit; 25: the colour temperature regulating circuit; 26: camera; 31: Fresnel lens; 36: movable table; 39: housing; 40: axle; 42: tooth bar; 43: the second gears; 44: turning axle; 45: the first gears; 46: locator protrusions spare (Network リ _StarThe prominent son of Network); 47: volute spring.

Embodiment

Below, use accompanying drawing that embodiment of the present invention is described.

The related flash unit of first embodiment of the present invention constitutes as Fig. 1～shown in Figure 3.Fig. 1 is the figure that the basic structure of the related flash unit of first embodiment of the present invention schematically is shown; Fig. 2 is the figure of structure that structure and the catoptron travel mechanism of the catoptron in the flash unit shown in Figure 1 are shown, and Fig. 3 is the figure that the structure of the motion control system that makes the action of catoptron travel mechanism is shown.

In Fig. 1, this flash unit 10 has the xenon discharge tube 12 and catoptron 13 as the linearity in flash of light source.Catoptron 13 forms in the face vertical with xenon discharge tube 12 (in the paper of Fig. 1) crooked (for example oval calotte) and along the bearing of trend of this xenon discharge tube 12 (direction vertical with the paper of Fig. 1: the shape of laterally) extending, and this catoptron 13 disposes with the mode of surrounding xenon discharge tube 12.The place ahead at xenon discharge tube 12 and catoptron 13 disposes light-emission window 11, and the reflected light by catoptron 13 reflections of the flash of light that xenon discharge tube 12 sends and this flash of light mixes ground and penetrates towards the place ahead through light-emission window 11.Catoptron 13 has first mirror portion 14 and second mirror portion, 15, the first mirror portion 14 dispose with the mode in the face of xenon discharge tube 12, and second mirror portion 15 is disposed at the rear side of first mirror portion 14.Second mirror portion 15 can move along bearing of trend (laterally) straight line of xenon discharge tube 12.

First mirror portion 14 is formed by aluminium sheet, and its reflecting surface (curved interior face) has been implemented mirror finish.As shown in Figure 2, be formed with a plurality of hole portion 141 of circular in first mirror portion 14.Of the back, painted is exposed from these a plurality of hole portions 141, these a plurality of hole portions 141 so that the quilt that is taken take the photograph body region illumination light colour temperature any part all roughly uniformly mode dispose.

Second mirror portion 15 is formed by aluminium sheet, this second mirror portion 15 implemented mirror finish with first mirror portion, 14 opposed reflectings surface.On this reflecting surface; Handle or be coated with the processing of resistant to elevated temperatures coating through pellumina, be formed with painted (151r, 151g) of the band shape of extending along the curved shape of second mirror portion 15 with width successively with the diameter same size of each hole portion of above-mentioned a plurality of hole portion 141.Particularly; Become one group with red colored the 151r of the predetermined color that is coloured to red colour system of predetermined space configuration and the 151g of green coloring portion of the predetermined color that is coloured to green system, and be arranged on the direction (the straight line moving direction of second mirror portion 15) identical with the orientation of a plurality of hole portion 141 that is formed at first mirror portion 14.In addition, the zone between red colored 151r and the 151g of green coloring portion is a reflecting surface self of having implemented mirror finish, below is called the 151s of non-coloring portion.The width of the 151s of non-coloring portion is for example set for identical with the width separately of red colored 151r and the 151g of green coloring portion so long as get final product more than or equal to the diameter of the hole portion 141 that is formed at first mirror portion 14.The group of this red colored 151r, the 151s of non-coloring portion and the 151g of green coloring portion seamlessly is arranged in order with the mode of each hole portion of a plurality of hole portion 141 that is assigned to first mirror portion 14.

So-called wrinkle shape (pears ground shape) is processed on the surface of each red colored 151r and each 151g of green coloring portion cursorily, so that come from the flash of light scattered reflection of xenon discharge tube 12.

The arrangement pitches of homochromy painted (151g of green coloring portion, red colored 151r and the 151s of non-coloring portion) is set the identical spacing of horizontal arrangement pitches with a plurality of hole portion 141 that is formed at first mirror portion 14 for.Thus, when second mirror portion, 15 straight lines are moved, all the time from first mirror portion 14 porose 141 painted (comprising non-coloring portion) of exposing equal area, same color simultaneously.Promptly; Can be through second mirror portion, 15 straight lines being moved change the area of painted of the same color that exposes from each hole portion 141 of first mirror portion 14 (151g of green coloring portion, red colored 151r and the 151s of non-coloring portion), thus the distribution of color in the reflecting surface of catoptron 13 changed.

This flash unit 10 possesses mechanism that above-mentioned second mirror portion, 15 straight lines are moved (below be called catoptron travel mechanism).This catoptron travel mechanism possesses: as the motor 16 of drive source; Screw axis (screw shaft) 17, it is fixed in the turning axle of motor 16 with the mode with the rotating shaft coaxle of motor 16; And nut 18, it is fixed in the support 19 with second mirror portion, 15 one.Motor 16 is provided with the mode of screw axis 17 along second mirror portion 15, and nut 18 is fixed in support 19 with the mode that screws togather with this screw axis 17.Thus, when screw axis 17 is driven by motor 16 and during rotation, along with nut 18 along the moving of screw axis 17, second mirror portion 15 moves along arrow A direction straight line.

In above-mentioned flash unit 10, be provided with position detector, this position detector detects the position (with respect to the relative position of first mirror portion 14) of second mirror portion 15 on its moving direction of moving through catoptron travel mechanism.This position detector possesses: metal brush 20, and it is fixed in above-mentioned support 19, can move integratedly with second mirror portion 15; And resistor 21, said brush 20 is configured on this resistor 21, slide.The position (with the relative position of first mirror portion 14) that predetermined position (for example end) that can be through resistor 21 and the resistance value between the brush 20 are represented second mirror portion 15.

Be used to make the motion control system of above-mentioned catoptron travel mechanism action to constitute with mode shown in Figure 3.

In Fig. 3, this motion control system has input processing circuit 24 and colour temperature control circuit 25.Be connected with at input processing circuit 24: can be by the switch 22 of user's operation, it is arranged at the housing of flash unit 10; Color temperature sensor 23, it is used to measure the colour temperature of surrounding environment light; And the control circuit of camera 26 (omitting diagram).When input based on the initiating signal of the operation of switch 22 or when coming from the initiating signal of camera 26; Input processing circuit 24 generates the color temperature signal (color temperature information) of the colour temperature of expression surrounding environment light according to the detection signal that comes from color temperature sensor 23, and exports this color temperature signal to colour temperature control circuit 25.Colour temperature control circuit 25 according to the color temperature signal that comes from input processing circuit 24 and with brush 20 that constitutes above-mentioned position detector and the corresponding position detection signal of resistance value between the resistor 21; Come the drive signal of output drive motor 16; Second mirror portion 15 is moved, to penetrate the light of the colour temperature of representing with above-mentioned color temperature signal.

As shown in Figure 4, the mixed light of the only following light that penetrates from flash unit 10: the direct sunshine L0 (flash of light) that comes from xenon discharge tube 12; The reflected light L1 that comes from the flash of light of xenon discharge tube 12 by 14 reflections of first mirror portion; Thereby and the flash of light that the comes from xenon discharge tube 12 reflected light L2 that has color by painted the 151r or the 151g reflection of second mirror portion 15.Catoptron 13 (first mirror portion 14 and second mirror portion 15) for example bends to elliptical shape; When from the top view of flash unit 10, look like from the front side focus of the mirror surface of elliptical shape by the reflected light L1 of first mirror portion, 14 reflections and by the reflected light L2 of painted 151r of second mirror portion 15 or 151g reflection and to radiate out.Therefore, from the direct sunshine L0 of xenon discharge tube 12 radiation of the rear side focus that is disposed at mirror surface, look like from same light source radiation by the reflected light L1 of first mirror portion, 14 reflections and by painted the 151r of second mirror portion 15 or the reflected light L2 of 151g reflection.Therefore, the light that the only above-mentioned direct sunshine L0 that penetrates from this flash unit 10 and reflected light L1, L2 mix well.And then; Through being moved, second mirror portion 15 adjusts painted color (color of the color of red colour system or green system) and the area thereof that exposes from each hole portion 141 of first mirror portion 14; Change the distribution of color in the reflecting surface of catoptron 13, thus, the above-mentioned change color that has the color reflected light L2 of color; The colour temperature of the light that consequently, penetrates from flash unit 10 changes.

Particularly, as shown in Figure 5, under the situation of the 151g of green coloring portion that exposes second mirror portion 15 from the integral body of each hole portion 141 of first mirror portion 14, the colour temperature of ejaculation light that comes from flash unit 10 for example is approximately 6,500K than higher.This situation is suitable for the situation of surrounding environment by the white fluorescent lamp illumination.As shown in Figure 6; Thereby under the situation of 151g of green coloring portion that second mirror portion 15 is moved along direction A expose second mirror portion 15 with half and half area ratio from each hole portion 141 of first mirror portion 14 and the 151s of non-coloring portion; The colour temperature of ejaculation light that comes from flash unit 10 is lower than situation shown in Figure 5; For example be approximately 6,000K.This situation is suitable for the situation that surrounding environment is thrown light on by the white fluorescent lamp near natural light.

And; As shown in Figure 7; Thereby second mirror portion 15 is further moved under the situation of the 151s of non-coloring portion that exposes second mirror portion 15 from the integral body of each hole portion 141 of first mirror portion 14 along direction A; The colour temperature of ejaculation light that comes from flash unit 10 is roughly the same with the colour temperature of flash of light that comes from xenon discharge tube 12, for example is 5,500K.This situation is suitable for the situation of surrounding environment by solar light irradiation.As shown in Figure 8; Thereby second mirror portion 15 is further moved under the situation of red colored the 151r that exposes second mirror portion 15 from the integral body of each hole portion 141 of first mirror portion 14 along direction A; The colour temperature that comes from the ejaculation light of flash unit 10 further reduces; For example be 2,800K.This situation is suitable for the situation of surrounding environment by tungsten lamp (white bulb) illumination.

Like this; Through second mirror portion, 15 straight lines are moved from state shown in Figure 5 to the area ratio of regulating the 151g of green coloring portion that exposes from each hole portion 141 of first mirror portion 14 state shown in Figure 7; Thus; For example can be from 6,500K to 5, the colour temperature of the ejaculation light that the range regulation of 500K penetrates from flash unit 10.And; Through second mirror portion, 15 straight lines are moved from state shown in Figure 7 to the area ratio of regulating red colored the 151r that exposes from the hole portion 141 of first mirror portion 14 state shown in Figure 8; Thus; For example can be from 5,500K to 2, the colour temperature of the ejaculation light that adjustment is penetrated from flash unit 10 between the 800K.That is, owing between the 151g of green coloring portion and red colored 151r, dispose the 151s of non-coloring portion, therefore, move through making second mirror portion, 15 straight lines, can make the colour temperature that penetrates light for example from 2,800K to 6 changes between the 500K continuously.

Penetrating the colour temperature adjustment of light specifically carries out in the following manner.

When the user to switch 22 operate, or thereby when being input to input processing circuit 24 based on the shooting operation initiating signal of camera 26, input processing circuit 24 generates the color temperature signal of the colour temperature of expression surrounding environment according to the detection signal that comes from color temperature sensor 23.And then; When the color temperature signal that comes from input processing circuit 24 is input to colour temperature control circuit 25; Colour temperature control circuit 25 driving motors 16 and second mirror portion 15 is moved so that by with brush 20 and resistor 21 between second mirror portion 15 represented of the corresponding position detection signal of resistance value become the position of the ejaculation light that can access the colour temperature of representing by above-mentioned color temperature signal with respect to the relative position of first mirror portion 14.When for example utilizing camera 26 to photograph under the situation of environment by tungsten lamp (white bulb) illumination around; Second mirror portion 15 is moved, so that second mirror portion of being represented by above-mentioned position detection signal 15 is with respect to the relative position of first mirror portion 14 position of exposing red colored 151r from the integral body of each hole portion 141 of first mirror portion 14 that becomes for example as shown in Figure 8.And; When for example utilizing camera 26 to photograph under the situation of environment by white fluorescent lamp illumination around; Second mirror portion 15 is moved, so that second mirror portion of being represented by above-mentioned position detection signal 15 is with respect to the relative position of first mirror portion 14 position of exposing the 151g of green coloring portion of second mirror portion 15 from the integral body of each hole portion 141 of first mirror portion 14 that becomes for example as shown in Figure 5.Like this, owing to can penetrate the light with the colour temperature of the colour temperature same degree of surrounding environment from flash unit 10, so the tone of surrounding environment (color and taste) is few with the difference of flash light, can take the photo that does not have sense of discomfort.

Like this; The flash unit related according to first embodiment; Because can be, therefore can change the catoptrical colour temperature of mirror 13 reflections that are reflected of the flash of light of sending from xenon discharge tube 12 according to above-mentioned distribution of color through coloured part that changes second mirror portion of exposing from each hole portion 141 of first mirror portion 14 15 and the distribution of color that area changes the reflecting surface of catoptron 13 thereof.Consequently, can adjust and comprise this catoptrical colour temperature that comes from the ejaculation light of flash unit 10.In this colour temperature adjustment, can as the situation of the light filter that uses liquid crystal or sheet, not cause the structure member cause thermal damage.And; Owing to rear side focus ejaculation and the colored reflected light of the direct sunshine that comes from xenon discharge tube 12 from the catoptron elliptical shape penetrates near the focus of front side; Therefore observe from the object side that leaves; Light almost penetrates from same point, therefore can not form a plurality of shadows that are accompanied by misalignment.

And; Be processed into so-called wrinkle shape cursorily owing to be formed at each red colored 151r of second mirror portion 15 and the surface of each 151g of green coloring portion; So that flash of light scattered reflection, therefore the reflected light by each red colored 151r and each 151g of green coloring portion reflection spreads through each hole portion 141.Consequently, can penetrate colour temperature light more uniformly.

In the related flash unit of first embodiment of the present invention; Mirror drive mechanism comprises the motor 16 as drive source; And second mirror portion, 15 straight lines are moved through the driving force of this motor 16; But, also can be to constitute catoptron travel mechanism through the mode that second mirror portion, 15 straight lines are moved.

And; Above-mentioned catoptron travel mechanism is the mechanism that second mirror portion, 15 straight lines are moved, but also can constitute make first mirror portion, 14 straight lines that are formed with a plurality of hole portion 141 move, or make first mirror portion 14 and the second mirror portion both sides relatively straight line move.

Below, the related flash unit of second embodiment of the present invention is described.This flash unit has the zoom mechanism of the range (Wide Ga り) of the light that adjustment penetrates, and it is different with the related flash unit of first embodiment of the present invention in the action that utilizes this zoom mechanism second mirror portion to be moved on this aspect.

The related flash unit of second embodiment of the present invention constitutes with Fig. 9～mode shown in Figure 13.In addition; Fig. 9 is the figure that the basic structure of the related flash unit of second embodiment of the present invention schematically is shown; Figure 10 is the stereographic map that the inner structure of flash unit is shown; Figure 11 is the exploded perspective view that the structure of the catoptron in the flash unit is shown, and Figure 12 amplifies the partial perspective view that representes with the zoom mechanism in the flash unit with reflection travel mechanism, and Figure 13 is the sectional view that the structure of flash unit is shown.

In Fig. 9, same with the flash unit 10 that first embodiment is related, flash unit 30 has as the xenon discharge tube 32 in flash of light source and the catoptron 33 that utilizes aluminium sheet bending (for example oval calotte) to form.Xenon discharge tube 32 is kept by the movable table that can move forward and backward 36 (maintaining part) with catoptron 33, disposes Fresnel lens 31 in the place ahead of the scope that moves forward and backward of movable table 36.The light that sends from xenon discharge tube 32 is by catoptron 33 reflections, comes from the light (direct sunshine) of xenon discharge tube 32 and penetrated towards the place ahead through Fresnel lens 31 as flash light by the reflected light of catoptron 33 reflections.

Movable table 36 can move forward and backward between the primary importance (wide-angle irradiation) and the second place (irradiation of looking in the distance); At the primary importance place; Thereby movable table 36 is maximum apart from the range that Fresnel lens 31 penetrates light recently; At second place place, thereby movable table 36 is minimum apart from the range that Fresnel lens 31 penetrates light farthest.Through movable table 36 (xenon discharge tube 32 and catoptron 33) is moved forward and backward making the variable mechanism of range that penetrates light is zoom mechanism; This zoom mechanism moves forward and backward movable table 36 through the positive and negative feed motion of screw axis 37, and above-mentioned screw axis 37 is through motor 38 rotations.

With reference to Figure 10～Figure 13 the more detailed structure of flash unit 30 with zoom mechanism is described.

At first, same with the flash unit 10 that above-mentioned first embodiment is related as Figure 11 is shown specifically, catoptron 33 has first mirror portion 34 and second mirror portion 35.And first mirror portion 34 disposes with the mode in the face of xenon discharge tube 32, and second mirror portion 35 is disposed at the rear side of first mirror portion 34 and can moves along bearing of trend (direction A: the horizontal) straight line of xenon discharge tube 32.In first mirror portion 34, be formed with a plurality of hole portion 341 with predetermined queueing discipline.In second mirror portion 35; Mode with each hole portion of a plurality of hole portion 341 that is assigned to first mirror portion 34; Clip not painted and become the 351s of non-coloring portion in the zone of mirror surface self, be formed with the 351g of green coloring portion and red colored the 351r that is coloured to the predetermined color of red colour system of the predetermined color that is coloured to green system.And then the queueing discipline with above-mentioned a plurality of hole portion 341 is identical respectively to be assigned to the queueing discipline of queueing discipline and the 351s of non-coloring portion of queueing discipline (shape, relative arrangement position), red colored 351r of the 351g of green coloring portion of each hole portion of a plurality of hole portion 341.Thus, when second mirror portion, 35 straight lines were moved, painted the color of exposing from a plurality of hole portion 341 of first mirror portion 34 was identical all the time.In addition, same with the situation of the related flash unit 10 of first embodiment, the surface of red colored 351r and the 351g of green coloring portion is processed to coarse wrinkle shape.

Below, with reference to Figure 10, on the base plate 39 of the housing of flash unit 30 (omitting diagram), be provided with the slide rail (slide rail) 40,41 that extends and be parallel to each other along fore-and-aft direction (B direction).Rearward end at a side slide rail 40 is provided with back stop part 402, and, though diagram not also is provided with same preceding stop part at its leading section.Rearward end and leading section at the opposing party's slide rail 41 are provided with back stop part 412 and preceding stop part 411 too.The sliding part 360 that is formed with two sliding part 360,361, one sides in the bottom of movable table 36 is chimeric with slide rail 40 sliding freely, and the opposing party's sliding part 361 is chimeric with slide rail 41 sliding freely.Sliding part 360,361 slides on slide rail 40,41, and movable table 36 moves forward and backward thus.When preceding stop part 411 butts of the preceding stop part of sliding part 360,361 and slide rail 40 and slide rail 41; Movable table 36 is positioned at the primary importance nearest apart from Fresnel lens 31; When back stop part 412 butts of the back stop part 402 of sliding part 360,361 and slide rail 40 and slide rail 41, movable table 36 is positioned at apart from Fresnel lens 31 second place farthest.

Between the base plate 39 of movable table 36 and housing, to dispose screw axis 37 with slide rail 40,41 parallel modes.With reference to Figure 10, Figure 11 and Figure 12, first gear 45 and screw axis 37 engagements.First gear 45 usually by after the locking mechanism locking stated, carry along fore-and-aft direction (B direction) with non-rotary mode by screw axis 37 through the positive and negative rotation of motor 38 (with reference to Fig. 9).Second gear 43 links with the coaxial mode and first gear 45 through connection shaft 44.Connection shaft 44 connects the axle support 362 that stretches out towards the rear from movable table 36, and through E type circle 48 anticreeps.Be fixed with tooth bar 42, the second gears 43 and tooth bar 42 engagements that extend along the bearing of trend of second mirror portion 35 at the back side of second mirror portion 35 that constitutes catoptron 33.

The locking mechanism of the first above-mentioned gear 45 constitutes in the following manner.

With reference to Figure 12 and Figure 13, in first gear 45, clip connection shaft 44 and be formed with extension 45a at opposition side with the tooth of screw axis 37 engagement.In extension 45a, be formed with recess, in this recess, take in the locator protrusions spare 46 that front end is spherical shape, be accommodated in this recess under the state of this locator protrusions spare 46 application of force above by volute spring 47 courts.The axle support 362 that stretches out from movable table 36, with the opposed part of extension 45a of first gear 45, be formed with three fastening recess 362a, 362b, 362c.Above-mentioned three fastening recess 362a, 362b, 362c are configured in along with first gear 45 is on the center rotation circular-arc track that form, locator protrusions spare 46 with connection shaft 44 with predetermined space.The inner peripheral surface of each fastening recess 362a, 362b, 362c forms dome shape, embeds any of above-mentioned fastening recess 362a, 362b, 362c from the leading section of the outstanding locator protrusions spare 46 of the extension 45a of first gear 45.The locator protrusions spare 46 that leading section is embedded in any among fastening recess 362a, 362b, the 362c is pushed by volute spring 47; First gear 45 links with movable table 36 (axle support 362) more securely thus, thereby first gear 45 becomes blocked state.In addition; Though first gear 45 (extension 45a) is pushed downwards by the reacting force to the volute spring 47 of locator protrusions spare 46 application of force towards the top; But since the connection shaft 44 that forms as one with first gear 45 with respect to axle support 362 through E type circle 48 anticreeps, therefore can keep the pressed state of locator protrusions spare 46 with respect to fastening recess 362a, 362b, 362c.

When thereby first gear 45 is become the state that first gear 45 and movable table 36 link more securely by the locking of above-mentioned locking mechanism; Be accompanied by moving forward and backward of first gear 45 carried by the screw axis through the positive and negative rotation of motor 38 (with reference to Fig. 9) 37, movable table 36 moves forward and backward between the above-mentioned primary importance (wide-angle) and the second place (looking in the distance).Like this, utilize motor 38, screw axis 37, first gear 45 and above-mentioned locking mechanism (the fastening protuberance 362a, 362b, the 362c that comprise locator protrusions spare 46, volute spring 47 and be formed at extension 45a) to constitute zoom mechanism.

In this flash unit 30, movable table 36 moves with blocked first gear 45, when sliding part 361,362 is resisted against the preceding stop part 411 (primary importance) of slide rail 40,41, stops the conveying of first gear 45.Under this state; When screw axis 37 will be further rotated; By the revolving force that acts on first gear 45, be embedded in any locator protrusions spare 46 among three fastening recess 362a, 362b, the 362c receives the effect that overcomes volute spring 47 from the inner peripheral surface of this fastening recess power.When locator protrusions spare 46 by this power when the fastening recess is deviate from, the locking of first gear 45 is disengaged, thus first gear 45 rotates through the revolving force that receives from screw axis 37, locator protrusions spare 46 embeds adjacent fastening recess.For example the rotation at this moment screw axis 37 stops.If the rotation at this moment screw axis 37 does not stop, then first gear 45 rotates and further is embedded in adjacent fastening recess up to locator protrusions spare 46, stops in the rotation of this moment screw axis 37.

Like this; After movable table 36 arrives primary importance; Keep the rotation scheduled volume through making screw axis 37; Thereby can not give further action to movable table 36, first gear 45 after locking is disengaged (appends actuating mechanism portion: action component) rotate, embed adjacent fastening recess up to locator protrusions spare 46.The rotation of first gear 45 of this moment is delivered to second gear 43 through connection shaft 44 (transmission mechanism); Be accompanied by the rotation of second gear 43; The straight line of tooth bar 42 moves, and moves through this straight line, and second mirror portion 35 of catoptron 33 moves along horizontal (A direction) straight line.

(append actuating mechanism portion: action action component) makes second gear 43 of second mirror portion, 35 actions constitute catoptron travel mechanism with tooth bar 42 to utilize first gear 45 via connection shaft 44 (transmission mechanism).And then; First gear 45 (appending travel mechanism) is set for the action relationships of catoptron travel mechanism (second gear 43 and tooth bar 42): first gear 45 rotates; Locator protrusions spare 46 moves the amount of a spacing and arrives the fastening recess of adjacency from each fastening recess 362a, 362b, 362c, thereby second mirror portion, 35 straight lines move such distance: make painted of exposing from each hole portion 341 of first mirror portion 34 (red colored 351r, the 351g of green coloring portion and the 351s of non-coloring portion any) become the painted portion of adjacency.

In addition; When thereby movable table 36 arrives the conveying of the second place first gear 45 that sliding parts 361,362 are resisted against the back stop part 402,412 of slide rail 40,41 and is prevented from; The locking of first gear 45 is disengaged; Through the action same, second mirror portion, 35 straight lines are moved with above-mentioned action.But, in this case and since screw axis 37 rotate to be counter-rotating, therefore the rotation direction of first gear 45, second gear 43 is also opposite, the moving direction of second mirror portion 35 is also reverse.

With reference to Figure 14～Figure 16 and Figure 17 A～Figure 17 C the more detailed action of the related flash unit 30 of second embodiment is described.

For example be embedded under the state among the fastening recess 362a of the end among three fastening recess 362a, 362b, the 362c at locator protrusions spare 46; Shown in figure 14; The tooth 451 of the end in three teeth 451,452,453 of first gear 45 and screw axis 37 engagements, and the tooth 431 of the end in three teeth 431,432,433 of second gear 43 and tooth bar 42 engagements.Under this state, tooth bar 42 is positioned at the leftmost side of moving range, thereby the 351g of green coloring portion of second mirror portion 35 exposes (with reference to Figure 11) from each hole portion 341 of first mirror portion 34.Like this, thereby be embedded under the state that the fastening recess 362a green coloring 351g of portion exposes from each hole portion 341 of first mirror portion 34, can penetrate colour temperature than higher flash light at locator protrusions spare 46.

For example; Be embedded under the state among the fastening recess 362b of the central authorities among three fastening recess 362a, 362b, the 362c at locator protrusions spare 46; Shown in figure 15; The tooth 452 of the central authorities in three teeth 451,452,453 of first gear 45 and screw axis 37 engagements, and the tooth 432 of the central authorities in three teeth 431,432,433 of second gear 43 and tooth bar 42 engagements.Under this state, tooth bar 42 is positioned at the central authorities of moving range, thereby the 351s of non-coloring portion of second mirror portion 35 exposes (with reference to Figure 11) from each hole portion 341 of first mirror portion 34.Like this, thereby be embedded under the state that the fastening recess 362b non-coloring 351s of portion exposes from each hole portion 341 of first mirror portion 34, can penetrate the flash light of colour temperature near natural light at locator protrusions spare 46.

For example; Be embedded under the state of fastening recess 362c of the other end among three fastening recess 362a, 362b, the 362c at locator protrusions spare 46; Shown in figure 16; The tooth 453 of the other end in three teeth 451,452,453 of first gear 45 and screw axis 37 engagements, and the tooth 433 of the other end in three teeth 431,432,433 of second gear 43 and tooth 42 engagements.Under this state, tooth bar 42 is positioned at the rightmost side, thereby red colored 351r of second mirror portion 35 exposes (with reference to Figure 11) from each hole portion 341 of first mirror portion 34.Like this, thereby be embedded under the state that red colored 351r of fastening recess 362c expose from each hole portion 341 of first mirror portion 34, can penetrate the lower flash light of colour temperature at locator protrusions spare 46.

This flash unit 30 has motion control system (omitting diagram); This motion control system moves second mirror portion 35 according to the information of the position detector (omit and illustrate) that comes from the turned position of detecting second gear 43 (with the position of the tooth of second gear 43 of tooth bar 42 engagements), so that the distribution of color of the reflecting surface of catoptron 33 is corresponding with the colour temperature of appointment.This motion control system for example carries out the mobile control of second mirror portion 35 according to the step shown in Figure 17 A～Figure 17 C, thereby to adjusting through the colour temperature of the light of Fresnel lens 31 ejaculations from flash unit 30.

The situation of light emission color temperature is specified in explanation to this flash unit 30.

In Figure 17 A, judge that what (S1) is the colour temperature of appointment be.Particularly, which in the following colour temperature be the colour temperature of judging appointment be: the colour temperature (lower colour temperature) of the ejaculation light that under the state that red colored 351r of the tooth 433 of second gear 43 and tooth bar 42 engagements (with reference to Figure 16), second mirror portion 35 exposes from each hole portion 341 of first mirror portion 34, obtains; The colour temperature (than higher colour temperature) of the ejaculation light that under the state that the 351g of green coloring portion of the tooth of second gear 43 431 and tooth bar 42 engagements (with reference to Figure 14), second mirror portion 35 exposes from each hole portion 341 of first mirror portion 34, obtains; And the colour temperature (colour temperature suitable) of the ejaculation light that under the state that the 351s of non-coloring portion of the tooth of second gear 43 432 and tooth bar 42 engagements (with reference to Figure 15), second mirror portion 35 exposes from each hole portion 341 of first mirror portion 34, obtains with natural light.In addition, same with the flash unit 10 that first embodiment is related, the colour temperature of above-mentioned appointment can be based on the colour temperature from the detection signal of color temperature sensor, also can be based on the colour temperature of the information of importing through user's operation.Then, the position detector of (with the position of the tooth of second gear 43 of tooth bar 42 engagements) is judged current illuminant colour set condition (S2, S4, S6) from the turned position of detecting second gear 43.And then, confirm the sense of rotation of screw axis 37 according to this result, make screw axis 37 rotations, become the position that predetermined illuminant colour is set thereby second mirror portion 35 is set in according to the output of the rotational position detection device of second gear 43.

Action under the following situation describes: the colour temperature of input appointment for example is that the current turned position of the situation of above-mentioned lower colour temperature (state shown in Figure 16) (in S1, being " 433 ") and second gear 43 that obtains according to the detection signal that comes from position detector is a tooth 431 and the situation (in S2, being " being ") of tooth bar 42 position engaged (with reference to Figure 14).

In this case, make screw axis 37, thereby so that second gear 43 rotate position (with reference to Figure 16) that the amount tooth bar 42 of two teeth becomes the rightmost side (S3) toward the clockwise direction towards rotation counterclockwise.Particularly, make screw axis 37, thereby movable table 36 move towards the place ahead with first gear 45 towards rotation counterclockwise.And then when movable table 36 arrived apart from the nearest primary importance of Fresnel lens 31, movable table 36 stopped.Through keeping the rotation of screw axis 37, thereby the locking of first gear 45 is disengaged, and first gear 45 rotates, and arrives two clicks of being separated by amount of space (the 2 Network リ that rattle away up to locator protrusions spare 46 from fastening recess 362a _StarThe Network branch) fastening recess 362c.At this constantly, second gear 43 becomes the state of tooth 433 and tooth bar engagement, and according to the detection signal that comes from position detector, the rotation of screw axis 37 stops.And then, embedding under the state of fastening recess 362c at locator protrusions spare 46, first gear 45 is locked.

Be accompanied by the rotation of the amount (tooth 431 → tooth 433) of two teeth of aforesaid second gear 43; (with reference to Figure 14) moves to the rightmost side (with reference to Figure 16) to tooth bar 42 from the leftmost side; Move through this of tooth bar 42; Second mirror portion, 35 straight lines move, and expose from each hole portion 341 of first mirror portion 34 up to red colored 351r.Thus, become the state of the light that can penetrate lower colour temperature.

Action under the following situation describes: the colour temperature of input appointment for example is that the current turned position of the situation of above-mentioned lower colour temperature (state shown in Figure 16) (in S1, being " 433 ") and second gear 43 that obtains according to the detection signal that comes from position detector is a tooth 432 and the situation of tooth bar 42 position engaged (with reference to Figure 15) (in S2 for " deny ", be " being " in S4).

In this case, make screw axis 37 towards rotation counterclockwise, thereby so that the amount tooth bar 42 that second gear 43 rotates a tooth toward the clockwise direction from position (with reference to Figure 16) that the current location (with reference to Figure 15) of substantial middle becomes the rightmost side (S5).Particularly; Towards rotation counterclockwise, movable table 36 arrives primary importance, further through screw axis 37; Through keeping the rotation of screw axis 37; The locking of first gear 45 is disengaged, and first gear 45 rotates, and arrives the fastening recess 362c of the fastening amount of space of being separated by from fastening recess 362b up to locator protrusions spare 46.Under this state, the rotation of screw axis 37 stops, and first gear 45 is locked.

Be accompanied by the rotation of the amount (tooth 432 → tooth 433) of a tooth of aforesaid second gear 43; Tooth bar 42 moves to the rightmost side (with reference to Figure 16) from substantial middle (with reference to Figure 15); Move through this of tooth bar 42; Second mirror portion, 35 straight lines move, and expose from each hole portion 341 of first mirror portion 34 up to red colored 351r.Thus, become the state of the light that can penetrate lower colour temperature.

Action under the following situation describes: the colour temperature of input appointment for example be the current turned position of the situation of above-mentioned lower colour temperature (state shown in Figure 16) (in S1, being " 433 ") and second gear 43 that obtains according to the detection signal that comes from position detector be tooth 433 with the situation of tooth bar 42 position engaged (with reference to Figure 16) (in S2 for " deny ", in S4 for " denying ", be " being " in S6).

In this case; Because red colored 351r of second mirror portion 35 exposes from each hole portion 341 of first mirror portion 34; Its distribution of color has become the distribution of color corresponding with the colour temperature of appointment, does not therefore make screw axis 37 rotations, the position (S7) of keeping second catoptron 35.Thus, keep the state of the light that can penetrate lower colour temperature.

In addition; Can't judge that the current location of second gear 43 is under the situation of which tooth and tooth bar 42 position engaged in the above-mentioned tooth 431,432,433 (in S2, S4, S6, being " denying ") according to the detection signal that comes from position detector; Think because fault etc. is not sure of the relative position of second mirror portion 35 with respect to first mirror portion 34; Thereby, perhaps light warning light (omitting diagram) (S8) in display unit (omitting diagram) display abnormality message.And then, do not make screw axis 37 rotations, the position (S7) of keeping second catoptron 35.

With reference to Figure 17 B following action is described: the colour temperature of importing appointment is opposite with above-mentioned situation when being judged to be; Be (in S1, to be " 431 ") during than higher colour temperature (with reference to Figure 14), with tooth bar 42 position engaged the 351g of green coloring portion of second mirror portion 35 exposed from each hole portion 341 of first mirror portion 34 thereby make second gear 43 be positioned at tooth 431.

In Figure 17 B, the action of following situation is described: the colour temperature of input appointment is that the turned position of situation of the colour temperature identical with state shown in Figure 14 (in S1, being " 431 ") and the second current gear 43 that obtains according to the detection signal that comes from position detector is a tooth 431 and the situation (in S11, being " being ") of tooth bar 42 position engaged (with reference to Figure 14).

In this case; Because the 351g of green coloring portion of second mirror portion 35 exposes from each hole portion 341 of first mirror portion 34; Its distribution of color has become the distribution of color corresponding with the colour temperature of appointment, does not therefore make screw axis 37 rotations, the position (S12) of keeping second catoptron 35.Thus, keep the state that can penetrate than the light of higher colour temperature.

Action under the following situation describes: the colour temperature of input appointment is that the current turned position of situation of the colour temperature identical with state shown in Figure 14 (in S1, being " 431 ") and the second current gear 43 that obtains according to the detection signal that comes from position detector is a tooth 432 and the situation of tooth bar 42 position engaged (with reference to Figure 15) (in S11 for " deny ", be " being " in S13).

In this case, screw axis 37 is rotated toward the clockwise direction, thereby so that the position (with reference to Figure 14) that the current location (with reference to Figure 15) of second gear 43 towards the amount tooth bar 42 that counterclockwise rotates a tooth from substantial middle becomes the leftmost side (S14).Particularly, screw axis 37 is rotated toward the clockwise direction, thereby movable table 36 move towards the rear with first gear 45.And then when movable table 36 arrived apart from farthest the second place of Fresnel lens 31, movable table 36 stopped.Through keeping the rotation of screw axis 37, thereby the locking of first gear 45 is disengaged, and first gear 45 rotates, and arrives the rattle away fastening recess 362a of amount of space of the click of being separated by up to locator protrusions spare 46 from fastening recess 362b.At this constantly, second gear 43 becomes the state of tooth 431 and tooth bar engagement, and according to the detection signal that comes from position detector, the rotation of screw axis 37 stops.And then, embedding under the state of fastening recess 362a at locator protrusions spare 46, first gear 45 is locked.

Be accompanied by the rotation of the amount (tooth 432 → tooth 431) of a tooth of aforesaid second gear 43; Tooth bar 42 moves to the leftmost side (with reference to Figure 14) from substantial middle (with reference to Figure 15); Move through this of tooth bar 42; Second mirror portion, 35 straight lines move, and expose from each hole portion 341 of first mirror portion 34 up to the 351g of green coloring portion.Thus, become the state that can penetrate than the light of higher colour temperature.

Action under the following situation describes: the colour temperature of input appointment be the current turned position of situation identical (in S1, being " 431 ") and the second current gear 43 that obtains according to the detection signal that comes from position detector with state shown in Figure 14 be tooth 433 with the situation of tooth bar 42 position engaged (with reference to Figure 16) (in S11 for " deny ", in S13 for " denying ", be " being " in S15).

In this case, screw axis 37 is rotated toward the clockwise direction, thereby so that the position (with reference to Figure 14) that the current location (with reference to Figure 16) of second gear 43 towards the amount tooth bar 42 that counterclockwise rotates two teeth from the rightmost side becomes the leftmost side (S16).Particularly; Through screw axis 37 rotation toward the clockwise direction, movable table 36 arrives the second place, further; Through keeping the rotation of screw axis 37; The locking of first gear 45 is disengaged, and first gear 45 rotates, and arrives the rattle away fastening recess 362a of amount of space of two clicks of being separated by up to locator protrusions spare 46 from fastening recess 362c.Under this state, the rotation of screw axis 37 stops, thereby first gear 45 is locked.

Be accompanied by the rotation of the amount (tooth 433 → tooth 431) of two teeth of aforesaid second gear 43; (with reference to Figure 16) moves to the leftmost side (with reference to Figure 14) to tooth bar 42 from the rightmost side; Move through this of tooth bar 42; Second mirror portion, 35 straight lines move, and expose from each hole portion 341 of first mirror portion 34 up to the 351g of green coloring portion.Thus, become the state that can penetrate than the light of higher colour temperature.

Further; In Figure 17 A;, the colour temperature that is judged to be above-mentioned input appointment (in S1, is " 432 ") when being the colour temperature (with reference to Figure 15) suitable with natural light; So that the 351s of non-coloring portion of second mirror portion 35 exposes from each hole portion 341 of first mirror portion 34, be transferred to the processing shown in Figure 17 C in order to make second gear 43 be positioned at tooth 432 position engaged.

In Figure 17 C, the action of following situation is described: the colour temperature of input appointment is that the current turned position of situation identical with state shown in Figure 15 (in S1, being " 432 ") and the second current gear 43 that obtains according to the detection signal that comes from position detector is a tooth 431 and the situation (in S21, being " being ") of tooth bar 42 position engaged (with reference to Figure 14).

In this case, make screw axis 37, thereby make tooth bar 42 (S22) from position (with reference to Figure 15) that the current location (with reference to Figure 14) of the leftmost side becomes substantial middle so that second gear 43 rotates the amount of a tooth toward the clockwise direction towards rotation counterclockwise.Particularly; Towards anticlockwise rotation, movable table 36 arrives the primary importance nearest apart from Fresnel lens 31, further through screw axis 37; Through keeping the rotation of screw axis 37; The locking of first gear 45 is disengaged, and first gear 45 rotates, and arrives the rattle away fastening recess 362b of amount of space of the click of being separated by up to locator protrusions spare 46 from fastening recess 362a.Under this state, the rotation of screw axis 37 stops, and first gear 45 is locked.

Be accompanied by the rotation of the amount (tooth 431 → tooth 432) of a tooth of aforesaid second gear 43; (with reference to Figure 14) moves to substantial middle (with reference to Figure 15) to tooth bar 42 from the leftmost side; Move through this of tooth bar 42; Second mirror portion, 35 straight lines move, and expose from each hole portion 341 of first mirror portion 34 up to the 351s of non-coloring portion.Thus, become the state of the light that can penetrate the colour temperature suitable with natural light.

Action under the following situation describes: the colour temperature of input appointment is that the current turned position of situation identical with state shown in Figure 15 (in S1, being " 432 ") and the second current gear 43 that obtains according to the detection signal that comes from position detector is a tooth 432 and the situation of tooth bar 42 position engaged (with reference to Figure 15) (in S21 for " deny ", be " being " in S23).

In this case; Because the 351s of non-coloring portion of second mirror portion 35 exposes from each hole portion 341 of first mirror portion 34; Its distribution of color has become the distribution of color corresponding with the colour temperature of appointment, does not therefore make screw axis 37 rotations, the position (S24) of keeping second catoptron 35.Thus, keep the state of the light that can penetrate the colour temperature suitable with natural light.

Action under the following situation describes: the colour temperature of input appointment be the current turned position of situation identical (in S1, being " 432 ") and the second current gear 43 that obtains according to the detection signal that comes from position detector with state shown in Figure 15 be tooth 433 with the situation of tooth bar 42 position engaged (with reference to Figure 16) (in S21 for " deny ", in S23 for " deny ", in S25 be " be ").

In this case, screw axis 37 is rotated toward the clockwise direction, thereby so that second gear 43 make tooth bar 42 from position (with reference to Figure 15) that the current location (with reference to Figure 16) of the rightmost side moves to substantial middle (S26) towards the amount of counterclockwise rotating a tooth.Particularly; Through screw axis 37 rotation toward the clockwise direction, movable table 36 arrives apart from Fresnel lens 31 second place farthest, further; Through keeping the rotation of screw axis 37; The locking of first gear 45 is disengaged, and first gear 45 rotates, and arrives the rattle away fastening recess 362b of amount of space of the click of being separated by up to locator protrusions spare 46 from fastening recess 362c.Under this state, the rotation of screw axis 37 stops, thereby first gear 45 is locked.

Be accompanied by the rotation of the amount (tooth 433 → tooth 432) of a tooth of aforesaid second gear 43; (with reference to Figure 16) moves to substantial middle (with reference to Figure 15) to tooth bar 42 from the rightmost side; Move through this of tooth bar 42; Second mirror portion, 35 straight lines move, and expose from each hole portion 341 of first mirror portion 34 up to the 351g of non-coloring portion.Thus, become the state of the light that can penetrate the colour temperature suitable with natural light.

When such colour temperature adjustment of penetrating light finishes as stated; Make screw axis 37 toward the clockwise direction or rotation counterclockwise, can be in the primary importance nearest and between apart from Fresnel lens 31 second place farthest movable table 36 set for and penetrate the range (zoom action) that light becomes expectation apart from Fresnel lens 31.Under this state; When making xenon discharge tube 32 luminous; Have the colour temperature based on the color of painted that exposes from each hole portion 341 of first mirror portion 34 (351g of green coloring portion, red colored 351r, the 351s of non-coloring portion) by the reflected light of catoptron 33 reflection, the reflected light of this colour temperature mixes the flash light of range that the ground conduct has above-mentioned expectation from Fresnel lens 31 ejaculations with the direct sunshine that comes from xenon discharge tube 32.

Related second embodiment of the invention flash unit 30; Coloured part through second mirror portion 35 that will expose from each hole portion 341 of first mirror portion 34 is changed into any red colored 351r, the 351g of green coloring portion and the 351s of non-coloring portion; Thereby can change the distribution of color of the reflecting surface in the catoptron 33; Therefore, can change the catoptrical colour temperature by catoptron 33 reflections of the flash of light of sending from xenon discharge tube 32 according to above-mentioned distribution of color.Consequently, can adjust and comprise this catoptrical colour temperature that comes from the ejaculation light of flash unit 30.And, same with the flash unit 10 that first embodiment is related, in above-mentioned colour temperature adjustment; Needn't use the parts of the flash of light that absorption such as light filter sends from xenon discharge tube 32, and, owing to do not use adjustment such as light filter or liquid crystal to come from the light quantity of a plurality of light sources; The destruction that therefore can not produce the parts that cause by heat; Can effectively the light that produces from xenon discharge tube 32 be given and taken the photograph body, and, can prevent to form a plurality of situation that are accompanied by the shadow of misalignment.

Further; Related second embodiment of the invention flash unit 30; Because the catoptron travel mechanism action of using the part of zoom mechanism to make to be used to second mirror portion 35 that makes catoptron 33 to move; Therefore the mechanism of catoptron travel mechanism action need not be provided for making in addition, the maximization of flash unit 30 can be suppressed as far as possible.

In addition; In the related flash unit 30 of second embodiment of the present invention; Change painted the color of exposing from each hole portion 341 of first mirror portion 34 accordingly with each latched position in three latched positions of the locator protrusions spare 46 of locking mechanism (three fastening recess 362a, 362b, 362c); But; Also more latched position can be further set,, painted the area that exposes from each hole portion 341 of first mirror portion 34 can be adjusted through changing ratio of gear from first gear, 45 to second gears 43.Thus, can more fine adjust the colour temperature that penetrates light.

Utilize possibility on the industry

As above said clear, flash unit involved in the present invention can not produce destruction and the misalignment that is caused by heat, can be thrown light on to taking the photograph body effectively with the light that predetermined colour temperature utilization produces from the flash of light source.And, through with the combination of existing zoom mechanism, can share motor etc. mechanism part, therefore can provide at an easy rate automatically to make the flash unit of the colour temperature coupling of flash light, so be useful according to the lighting environment of being taken the photograph body.

Claims (16)

1. flash unit, said flash unit has flash of light source and catoptron, and the flash of light that send in this flash of light source and the reflected light by said mirror reflects of this flash of light penetrate towards the place ahead, it is characterized in that,

Said flash unit has the distribution of color changeable mechanism, and said distribution of color changeable mechanism changes the distribution of color of the reflecting surface of said catoptron,

Said catoptron possesses first mirror portion and second mirror portion that is disposed at the rear side of this first mirror portion,

Form porose portion in said first mirror portion,

Be formed with painted portion in said second mirror portion with predetermined color dyes,

Said distribution of color changeable mechanism has the catoptron travel mechanism that said first mirror portion and said second mirror portion are relatively moved,

Through utilizing said catoptron travel mechanism to make said painted the area change of exposing from the said hole portion of said first mirror portion, change the distribution of color of the reflecting surface of said catoptron.

2. flash unit according to claim 1 is characterized in that,

Said catoptron travel mechanism makes said second mirror portion move with respect to fixing said first mirror portion.

3. flash unit according to claim 1 and 2 is characterized in that,

Said painted the processing of having implemented to be used to make the flash of light scattered reflection that comes from said flash of light source in said second mirror portion.

4. flash unit according to claim 1 is characterized in that,

Be formed with predetermined regularly arranged a plurality of hole portion in said first mirror portion,

Be formed with and said a plurality of hole corresponding a plurality of painted portion of portion in said second mirror portion,

Make painted area change of the correspondence that each hole portion from the said a plurality of hole portion of said first mirror portion exposes through said catoptron travel mechanism.

5. flash unit according to claim 4 is characterized in that,

Be formed with a plurality of painted portion in said second mirror portion with different color dyes.

6. flash unit according to claim 5 is characterized in that,

Said a plurality of painted comprises: the first painted portion, and it is coloured to first color; With the second painted portion, it is coloured to catoptrical colour temperature second color higher than the catoptrical colour temperature of said first color.

7. flash unit according to claim 6 is characterized in that,

Said first color is the predetermined color of red colour system, and said second color is the predetermined color of green system.

8. according to claim 5 or 6 described flash units, it is characterized in that,

Said catoptron travel mechanism make said first mirror portion and second mirror portion relatively straight line move,

Be formed at said first painted of said second mirror portion with said second painted each hole portion that is assigned in the said a plurality of hole portion that is formed at said first mirror portion; And arrange along the direction that this straight line moves at the interval with more than or equal to the width of hole portion on said straight line moving direction that it was assigned with

Width on said first painted and second painted each the comfortable said straight line moving direction is more than or equal to the width of hole portion on said straight line moving direction that they were assigned with.

9. flash unit according to claim 1 is characterized in that,

Said flash unit has:

The color temperature information generation unit, it generates the color temperature information of expression colour temperature; And

Action control unit, it makes said distribution of color changeable mechanism action, so that the distribution of color of the reflecting surface of said catoptron becomes and the corresponding distribution of color of being confirmed by the color temperature information that obtains through said color temperature information generation unit of colour temperature.

10. flash unit according to claim 1 is characterized in that,

Said flash unit has:

The color temperature information generation unit, it generates the color temperature information of expression colour temperature; And

Action control unit; It makes the action of said catoptron travel mechanism so that painted area of said second mirror portion of exposing from the said hole portion of said first mirror portion becomes following size: this size make the distribution of color of reflecting surface of said catoptron become with by the definite corresponding distribution of color of colour temperature of the color temperature information that obtains through said color temperature information generation unit.

11. flash unit according to claim 10 is characterized in that,

Said action control unit has the relative position detecting unit, the relative position of said first mirror portion of said relative position detection and said second mirror portion,

According to by this relative position detection to relative position make the action of said catoptron travel mechanism so that painted area of said second mirror portion of exposing from the said hole portion of said first mirror portion becomes following size: this size make the distribution of color of reflecting surface of said catoptron become with by the definite corresponding distribution of color of colour temperature of said color temperature information.

12. each the described flash unit according in the claim 9 to 11 is characterized in that,

Said color temperature information generation unit has the colour temperature detecting unit, the colour temperature of the surrounding environment light of said this flash unit of colour temperature detection,

Said color temperature information generation unit generate expression by this colour temperature detection to the color temperature information of colour temperature.

13. flash unit according to claim 1 is characterized in that,

The place ahead in said flash of light source disposes lens; Said flash unit also has zoom mechanism, and said zoom mechanism drives said flash of light source and said catoptron between first state and second state, under said first state; The range of the ejaculation light that penetrates through said lens is maximum; Under said second state, the range of said ejaculation light is minimum

Said zoom mechanism comprises the actuating mechanism portion of appending; After said flash of light source and said catoptron arrive the arbitrary state in first state and second state; This appends that actuating mechanism portion carries out predetermined actions and the action that do not promote said flash of light source and said catoptron

Said zoom mechanism has transmission mechanism, and said transmission mechanism combines said actuating mechanism portion and the said distribution of color changeable mechanism of appending,

The power that is produced by the said action of appending actuating mechanism portion in the said zoom mechanism is delivered to said distribution of color changeable mechanism via said transmission mechanism, thereby this distribution of color changeable mechanism changes the distribution of color of the reflecting surface of said catoptron.

14. flash unit according to claim 13 is characterized in that,

The said actuating mechanism portion of appending has:

Action component, it receives the power of said zoom mechanism and combines with said transmission mechanism; And

Locking mechanism; When said flash of light source and said catoptron are driven between said first state and said second state; This locking mechanism locks said action component; After said flash of light source and said catoptron arrived the arbitrary state in said first state and said second state, this locking mechanism was removed said lock-out state

Thereby the said action component behind the latch-release receives the power of said zoom mechanism carries out said predetermined actions.

15. flash unit according to claim 1 is characterized in that,

Said flash unit has maintaining part, and said maintaining part keeps said flash of light source and said catoptron, and,

The place ahead in said flash of light source disposes lens, and said flash unit has zoom mechanism, and said zoom mechanism makes the advance and retreat action between the primary importance nearest apart from said lens and the said lens of the distance second place farthest of said maintaining part,

Said zoom mechanism comprises the actuating mechanism portion of appending, and after said maintaining part arrived the arbitrary position in the said primary importance and the second place, this appended that actuating mechanism portion carries out predetermined actions and the action that do not promote said maintaining part,

Said zoom mechanism has transmission mechanism, and said transmission mechanism combines this to append actuating mechanism portion and said catoptron travel mechanism,

Append power that the action of actuating mechanism portion produces by said in the said zoom mechanism and be delivered to said catoptron travel mechanism, thereby this catoptron travel mechanism relatively moves said first mirror portion and said second mirror portion via said transmission mechanism.

16. flash unit according to claim 15 is characterized in that,

The said actuating mechanism portion of appending has:

Action component, it bears the power of said zoom mechanism; And

Locking mechanism; When said maintaining part was advanced and retreat action between the said primary importance and the said second place, this locking mechanism locked said action component, after said maintaining part arrives the arbitrary position in the said primary importance and the said second place; This locking mechanism is removed said lock-out state

Said action component behind the latch-release bears the power of said zoom mechanism, thereby carries out said predetermined actions.

Images