CN101813870A - Flash unit - Google Patents

Abstract

The invention provides a kind of flash unit, this flash unit can be given the light that produces from the flash of light source to subject effectively, can not cause obstacle to photography, and can adjust the colour temperature of flashlamp.This flash unit has flash of light source (12) and catoptron (13), the reflected light by described catoptron (13) reflection of the flash of light that send in this flash of light source (12) and this flash of light penetrates towards the place ahead, wherein, this flash unit has color distribution changeable mechanism (16,17,18,19), and described color distribution changeable mechanism changes the color distribution of the reflecting surface of described catoptron (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 subject 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 Zai Sheng image and the photo that prints many times.

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) by 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 by the concentration of adjusting 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 such energy 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 being attached with dirt etc. on conversion filter for colour temperature, 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 under the approaching situation of subject, 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 in the place ahead of each xenon discharge tube and can adjust the liquid crystal of concentration 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 finishes in light of this situation, 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 described mirror reflects of this flash of light penetrate towards the place ahead, wherein, described flash unit forms the structure with color distribution changeable mechanism, and described color distribution changeable mechanism changes the color distribution of the reflecting surface of described catoptron.

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

In flash unit involved in the present invention, described catoptron possesses first mirror portion and is disposed at second mirror portion of the rear side of this first mirror portion, form porose portion in described first mirror portion, be formed with painted portion in described second mirror portion with predetermined color dyes, described color distribution changeable mechanism has the catoptron travel mechanism that described first mirror portion and described second mirror portion are relatively moved, by utilizing described catoptron travel mechanism to make the area change of the described painted portion of exposing from the described hole portion of described first mirror portion, change the color distribution of the reflecting surface of described catoptron.

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

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

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

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

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

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

By this structure, the area change of the painted portion of second mirror portion of exposing by 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 color distribution 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 described second mirror portion.

By 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, described a plurality of painted portions comprise: 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 described first color.

By this structure, the area of the painted portion of first color that can be by adjusting second mirror portion of exposing from the hole portion that is formed at first mirror portion, change color distribution based on first color, and, the area of painted portion that can be by adjusting second color of exposing from described hole portion, change color distribution, therefore can carry out the colour temperature adjustment of wider scope based on second color.

Described first color is the predetermined color of red colour system, and described second color is the predetermined color of green system.

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

By this structure, by make first mirror portion and second mirror portion relatively straight line move, can make the area of the first painted portion 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 integral body continuously from zero, and, can make the area of the second painted portion 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 integral body continuously from zero.

Further, in flash unit involved in the present invention, described 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 described color distribution changeable mechanism action, so that the color distribution of the reflecting surface of described catoptron becomes and the corresponding color distribution of being determined by the color temperature information that obtains by described color temperature information generation unit of colour temperature.

By this structure,, therefore can penetrate light by the definite colour temperature of the color temperature information of described generation owing to the color distribution control of the reflecting surface of catoptron can be become and the corresponding color distribution of being determined by the color temperature information that generates of colour temperature.

And in flash unit involved in the present invention, described 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 described catoptron travel mechanism so that the area of the painted portion of described second mirror portion of exposing from the described hole portion of described first mirror portion becomes following size: this size make the color distribution of reflecting surface of described catoptron become with by the definite corresponding color distribution of colour temperature of the color temperature information that obtains by described color temperature information generation unit.

By this structure, owing to the area control of the painted portion of second mirror portion exposed from the hole portion of first mirror portion can be become following size: this size makes the color distribution of reflecting surface of catoptron become and the corresponding color distribution of being determined by the colouring information that generates of colour temperature, therefore can penetrate the light by the definite colour temperature of the color temperature information of described generation.

And, in flash unit involved in the present invention, described action control unit has the relative position detecting unit, described relative position detecting unit detects the relative position of described first mirror portion and described second mirror portion, according to making the action of described catoptron travel mechanism by the detected relative position of this relative position detecting unit, so that the area of the painted portion of described second mirror portion of exposing from the described hole portion of described first mirror portion becomes following size: this size make the color distribution of reflecting surface of catoptron become with by the definite corresponding color distribution of colour temperature of described color temperature information.

By 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, described color temperature information generation unit has the colour temperature detecting unit, described colour temperature detecting unit detects the colour temperature of the surrounding environment light of this flash unit, and described color temperature information generation unit generates the color temperature information of expression by the detected colour temperature of this colour temperature detecting unit.

By 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, the place ahead in described flash of light source disposes lens, described flash unit also has zoom mechanism, described zoom mechanism drives described flash of light source and described catoptron between first state and second state, under described first state, the range maximum of the ejaculation light that penetrates by described lens, under described second state, the range minimum of described ejaculation light, described zoom mechanism comprises the actuating mechanism portion of appending, after described flash of light source and described catoptron arrive 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 described flash of light source and described catoptron, described zoom mechanism has transmission mechanism, described transmission mechanism is in conjunction with described actuating mechanism portion and the described color distribution changeable mechanism of appending, the power that is produced by the described action of appending actuating mechanism portion in the described zoom mechanism is delivered to described color distribution changeable mechanism via described transmission mechanism, thereby this color distribution changeable mechanism changes the color distribution of the reflecting surface of described catoptron.

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

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

By 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 described flash of light source and described catoptron arrive arbitrary state in first state and second state, the locking of described action component is disengaged, thereby this action component carries out predetermined actions.And then the predetermined actions of this action component is delivered to the color distribution changeable mechanism via transmission mechanism, and thus, the color distribution of the reflecting surface in the catoptron changes.

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

By 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, thus, first mirror portion and second mirror portion relatively move.By relatively moving of this first mirror portion and second mirror portion, the area change of the painted portion 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 described actuating mechanism portion of appending has: action component, and it bears the power of described zoom mechanism; And locking mechanism, when described maintaining part is advanced and retreat action between the described primary importance and the described second place, this locking mechanism locks described action component, after described maintaining part arrives arbitrary position in the described primary importance and the described second place, this locking mechanism is removed described lock-out state, described action component behind the latch-release bears the power of described zoom mechanism, thereby carries out described predetermined actions.

By 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 arbitrary position in the maintaining part arrival primary importance and the second place, the locking of described action component is 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, the area change of the painted portion 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 color distribution of reflecting surface that can be by 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 give the light that produces from the flash of light source to subject effectively, and, can prevent to form a plurality of situations 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 that the structure of the structure of the catoptron in the flash unit shown in Figure 1 and catoptron travel mechanism is 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 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 concrete structure of flash unit inside 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 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) 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 embodiments of the present invention are described.

The flash unit that first embodiment of the present invention is related such as Fig. 1～constitute as 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 that the structure of the structure of the catoptron in the flash unit shown in Figure 1 and catoptron travel mechanism is 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 xenon discharge tube 12 and the 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 (direction vertical with the paper of Fig. 1: the laterally) shape of extending, and this catoptron 13 disposes in the mode of surrounding xenon discharge tube 12 along the bearing of trend of this 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 by light-emission window 11.Catoptron 13 has first mirror portion 14 and second mirror portion, 15, the first mirror portion 14 dispose in 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.As described later, painted is exposed from these a plurality of hole portions 141, these a plurality of hole portions 141 so that the colour temperature of the illumination light in the subject zone that is taken any part all roughly uniformly mode dispose.

Second mirror portion 15 is formed by aluminium sheet, this second mirror portion 15 be 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 by 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 151r of the predetermined color that is coloured to red colour system of predetermined space configuration and the 151g of green coloring portion that is coloured to the predetermined color of 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, hereinafter referred to as 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 in 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 by 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 color distribution in the reflecting surface of catoptron 13 changed.

This flash unit 10 possesses the mechanism (hereinafter referred to as catoptron travel mechanism) that above-mentioned second mirror portion, 15 straight lines are moved.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 in 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 in the mode of screw axis 17 along second mirror portion 15, and nut 18 is fixed in support 19 in the mode that screws togather with this screw axis 17.Thus, when screw axis 17 is driven by motor 16 and when rotating, along with nut 18 along the moving of screw axis 17, second mirror portion 15 moves along arrow A direction straight line.

Be provided with position detector in above-mentioned flash unit 10, 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 by 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, described brush 20 is configured to slide on this resistor 21.The position (with the relative position of first mirror portion 14) that predetermined position (for example end) that can be by 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 in 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 mixes well of the only above-mentioned direct sunshine L0 that penetrates from this flash unit 10 and reflected light L1, L2.And then, by second mirror portion 15 being moved adjust the color (color of the color of red colour system or green system) and the area thereof of the painted portion of exposing from each hole portion 141 of first mirror portion 14, change the color distribution in the reflecting surface of catoptron 13, thus, the above-mentioned change color that has the color reflected light L2 of color, consequently, the colour temperature of the light that 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 be 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, by 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 range regulation of 500K is from the colour temperature of the ejaculation light of flash unit 10 ejaculations.And, by 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 adjusts between the 800K from the colour temperature of the ejaculation light of flash unit 10 ejaculations.That is, owing to dispose the 151s of non-coloring portion between the 151g of green coloring portion and red colored 151r, therefore, move by 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 thereby the user operated switch 22 or is input to input processing circuit 24 based on the shooting operation initiating signal of camera 26, input processing circuit 24 generated 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 for example becomes the position of exposing red colored 151r from the integral body of each hole portion 141 of first mirror portion 14 as shown in Figure 8 with respect to the relative position of first mirror portion 14.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 for example becomes the 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 as shown in Figure 5 with respect to the relative position of first mirror portion 14.Like this, owing to can penetrate 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 color distribution by coloured part that changes second mirror portion of exposing from each hole portion 141 of first mirror portion 14 15 and the color distribution 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 is adjusted, 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 by each hole portion 141.Consequently, can penetrate the more uniform light of colour temperature.

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 by the driving force of this motor 16, but, also can be to constitute catoptron travel mechanism by 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 adjust to penetrate, 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 in 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 structure of flash unit inside is shown, Figure 11 is the exploded perspective view that the structure of the catoptron in the flash unit is shown, Figure 12 amplifies the partial perspective view that represents with zoom mechanism in the flash unit and 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 and catoptron 33 are kept by the movable table 36 (maintaining part) that can move forward and backward, and dispose 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 by 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 penetrates the range maximum of light recently apart from Fresnel lens 31, at second place place, thereby movable table 36 penetrates the range minimum of light farthest apart from Fresnel lens 31.By 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 by the positive and negative feed motion of screw axis 37, and above-mentioned screw axis 37 is by 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 in 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 of the predetermined color that is coloured to green system and be coloured to red colored 351r of the predetermined color of red colour system.And then the queueing discipline that is assigned to the queueing discipline 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 and the 351s of the non-coloring portion queueing discipline with above-mentioned a plurality of hole portion 341 respectively is identical.Thus, when second mirror portion, 35 straight lines were moved, the color of the painted portion 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, dispose screw axis 37 in the mode parallel with slide rail 40,41.With reference to Figure 10, Figure 11 and Figure 12, first gear 45 and screw axis 37 engagements.First gear 45 by locking mechanism locking described later, is carried along fore-and-aft direction (B direction) in non-rotary mode by the screw axis 37 by the positive and negative rotation of motor 38 (with reference to Fig. 9) usually.Second gear 43 links with the coaxial mode and first gear 45 by connection shaft 44.Connection shaft 44 connects the axle support 362 that stretches out towards the rear from movable table 36, and by 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, this locator protrusions spare 46 by volute spring 47 towards above be accommodated in this recess under the state of the application of force.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 among fastening recess 362a, 362b, the 362c any is pushed by volute spring 47, first gear 45 and movable table 36 (axle support 362) link more securely thus, thereby first gear 45 becomes blocked state.In addition, though first gear 45 (extension 45a) is by locator protrusions spare 46 is pushed downwards towards the reacting force of the volute spring 47 of the top application of force, but since the connection shaft 44 that forms as one with first gear 45 with respect to axle support 362 by 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 by 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, stops the conveying of first gear 45 when sliding part 361,362 is resisted against the preceding stop part 411 (primary importance) of slide rail 40,41.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 is subjected to overcoming the effect of 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 by the revolving force that is subjected to 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 by 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 by connection shaft 44 (transmission mechanism), be accompanied by the rotation of second gear 43, the straight line of tooth bar 42 moves, and moves by 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 and tooth bar 42 constitute catoptron travel mechanism 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 (any red colored 351r, the 351g of green coloring portion and the 351s of non-coloring portion) 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, by the action same, second mirror portion, 35 straight lines are moved with above-mentioned action.But in this case, owing to the counter-rotating that rotates to be of screw axis 37, therefore the rotation direction of first gear 45, second gear 43 is also opposite, and 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 under locator protrusions spare 46 is embedded in state among the fastening recess 362a of the end among three fastening recess 362a, 362b, the 362c, as 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, under locator protrusions spare 46 is embedded in state among the fastening recess 362b of the central authorities among three fastening recess 362a, 362b, the 362c, as 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, as 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 color distribution 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 by 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 obtains 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; 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 431 of second gear 43 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 432 of second gear 43 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 by 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, determine 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 is described: 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) (being " 433 " in S1) and second gear 43 that obtains according to the detection signal that comes from position detector is a tooth 431 and the situation (being "Yes" in S2) 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.By 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 by 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 is described: 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) (being " 433 " in S1) 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 "No", be in S4 "Yes").

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, rotate towards counter clockwise direction by screw axis 37, movable table 36 arrives primary importance, further, by 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 by 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 is described: 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 "No", in S4 for "No", in S6, be "Yes").

In this case, because red colored 351r of second mirror portion 35 exposes from each hole portion 341 of first mirror portion 34, its color distribution has become the color distribution 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 in the above-mentioned tooth 431,432,433 and tooth bar 42 position engaged (being "No" in S2, S4, S6) according to the detection signal that comes from position detector, think because fault etc. be can not determine 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 (being " 431 " in S1) 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 (being "Yes" in S11) 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 color distribution has become the color distribution 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 is described: 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 (being " 431 " in S1) 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 "No", be in S13 "Yes").

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.By 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 by 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 is described: 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 "No", in S13 for "No", in S15, be "Yes").

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, by screw axis 37 rotation toward the clockwise direction, movable table 36 arrives the second place, further, by 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 by 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, when being the colour temperature (with reference to Figure 15) suitable with natural light, the colour temperature that is judged to be above-mentioned input appointment (in S1, is " 432 "), 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, be described as follows the action of situation: the colour temperature of input appointment is that the current turned position of situation identical with state shown in Figure 15 (being " 432 " in S1) 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 (being "Yes" in S21) 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, by screw axis 37 towards anticlockwise rotation, movable table 36 arrives the primary importance nearest apart from Fresnel lens 31, further, by 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 by 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 is described: the colour temperature of input appointment is that the current turned position of situation identical with state shown in Figure 15 (being " 432 " in S1) 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 "No", be in S23 "Yes").

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 color distribution has become the color distribution 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 is described: 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, by screw axis 37 rotation toward the clockwise direction, movable table 36 arrives apart from Fresnel lens 31 second place farthest, further, by 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 by 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 the colour temperature adjustment of penetrating light as mentioned above like that finishes, make screw axis 37 toward the clockwise direction or rotation counterclockwise, can be in the nearest primary importance of distance Fresnel lens 31 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.Under this state, when making xenon discharge tube 32 luminous, have 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 ground conduct and has the flash light of range of 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, change into red colored 351r, the 351g of green coloring portion and the 351s of non-coloring portion any by the coloured part of second mirror portion 35 that will expose from each hole portion 341 of first mirror portion 34, thereby can change the color distribution 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 color distribution.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 is adjusted, 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, so destruction that can not produce the parts that cause by heat, can give subject with the light that produces from xenon discharge tube 32 effectively, and, can prevent to form a plurality of situations 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 the color of the painted portion 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 can further set more latched position, by changing ratio of gear, can adjust the area of the painted portion of exposing from each hole portion 341 of first mirror portion 34 from first gear, 45 to second gears 43.Thus, can more fine adjust the colour temperature that penetrates light.

Utilize possibility on the industry

What understand as mentioned above is such, and flash unit involved in the present invention can not produce destruction and the color deviation that is caused by heat, can effectively throw light on to subject with the light that predetermined colour temperature utilization produces from the flash of light source. And, by with the combination of existing zoom mechanism, can share motor etc. mechanism part, therefore the flash unit of the colour temperature coupling that can automatically make according to the lighting environment of subject flash light can be provided at an easy rate, be useful therefore.

Claims (17)

1. flash unit, described 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 described mirror reflects of this flash of light penetrate towards the place ahead, it is characterized in that,

Described flash unit has the color distribution changeable mechanism, and described color distribution changeable mechanism changes the color distribution of the reflecting surface of described catoptron.

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

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

Form porose portion in described first mirror portion,

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

Described color distribution changeable mechanism has the catoptron travel mechanism that described first mirror portion and described second mirror portion are relatively moved,

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

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

Described catoptron travel mechanism makes described second mirror portion move with respect to fixing described first mirror portion.

4. according to claim 2 or 3 described flash units, it is characterized in that,

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

5. according to each the described flash unit in the claim 2 to 4, it is characterized in that,

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

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

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

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

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

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

Described a plurality of painted portion 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 described first color.

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

Described first color is the predetermined color of red colour system, and described second color is the predetermined color of green system.

9. according to claim 6 or 7 described flash units, it is characterized in that,

Described catoptron travel mechanism make described first mirror portion and second mirror portion relatively straight line move,

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

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

10. according to each the described flash unit in the claim 1 to 9, it is characterized in that,

Described 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 described color distribution changeable mechanism action, so that the color distribution of the reflecting surface of described catoptron becomes and the corresponding color distribution of being determined by the color temperature information that obtains by described color temperature information generation unit of colour temperature.

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

Described 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 described catoptron travel mechanism so that the area of the painted portion of described second mirror portion of exposing from the described hole portion of described first mirror portion becomes following size: this size make the color distribution of reflecting surface of described catoptron become with by the definite corresponding color distribution of colour temperature of the color temperature information that obtains by described color temperature information generation unit.

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

Described action control unit has the relative position detecting unit, and described relative position detecting unit detects the relative position of described first mirror portion and described second mirror portion,

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

13. each the described flash unit according in the claim 10 to 12 is characterized in that,

Described color temperature information generation unit has the colour temperature detecting unit, and described colour temperature detecting unit detects the colour temperature of the surrounding environment light of this flash unit,

Described color temperature information generation unit generates the color temperature information of expression by the detected colour temperature of this colour temperature detecting unit.

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

The place ahead in described flash of light source disposes lens, described flash unit also has zoom mechanism, described zoom mechanism drives described flash of light source and described catoptron between first state and second state, under described first state, the range maximum of the ejaculation light that penetrates by described lens, under described second state, the range minimum of described ejaculation light

Described zoom mechanism comprises the actuating mechanism portion of appending, after described flash of light source and described catoptron arrive 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 described flash of light source and described catoptron

Described zoom mechanism has transmission mechanism, and described transmission mechanism is in conjunction with described actuating mechanism portion and the described color distribution changeable mechanism of appending,

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

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

The described actuating mechanism portion of appending has:

Action component, it is subjected to the power of described zoom mechanism and combines with described transmission mechanism; And

Locking mechanism, when described flash of light source and described catoptron are driven between described first state and described second state, this locking mechanism locks described action component, after described flash of light source and described catoptron arrive arbitrary state in described first state and described second state, this locking mechanism is removed described lock-out state

Thereby the described action component behind the latch-release is subjected to the power of described zoom mechanism carries out described predetermined actions.

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

Described flash unit has maintaining part, and described maintaining part keeps described flash of light source and described catoptron, and,

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

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

Described zoom mechanism has transmission mechanism, and described transmission mechanism appends actuating mechanism portion and described catoptron travel mechanism in conjunction with this,

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

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

The described actuating mechanism portion of appending has:

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

Locking mechanism, advance and retreat between the described primary importance and the described second place when action when described maintaining part, this locking mechanism locks described action component, after described maintaining part arrives arbitrary position in the described primary importance and the described second place, this locking mechanism is removed described lock-out state

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

Images