CN101390011B

CN101390011B - Reflecting mirror for electronic flash device

Info

Publication number: CN101390011B
Application number: CN2005800456117A
Authority: CN
Inventors: 松尾机
Original assignee: Shibakawa Manufacturing Co Ltd
Current assignee: Shibakawa Manufacturing Co Ltd
Priority date: 2005-08-08
Filing date: 2005-08-08
Publication date: 2011-06-22
Anticipated expiration: 2025-08-08
Also published as: JP4423330B2; WO2007017929A1; TWI317841B; JPWO2007017929A1; TW200707058A; CN101390011A

Abstract

A reflecting mirror (1) for an electronic flush device has a pair of first reflecting surfaces (5, 7) arranged opposite to each other across a standard surface K and also has a second reflecting surface (12) inside which a circular tube-shaped light source (2) is received. The reflecting mirror (1) is configured so that the center axis (2a) of the light source (2) is positioned on a standard surface (O). The pair of reflecting surfaces (5, 7) of the reflecting mirror (1) is formed in flat surfaces, and an angle formed by the standard surface K and a line segment (B1-O, B2-O) connecting one end (5a, 7a), positioned on the second reflecting mirror side, of each of the pair of reflecting surfaces (5, 7) and the center axis (2a) of the light source (2) is equal to or less than 90 degrees.

Description

Reflecting mirror for electronic flash device

Technical field

The present invention relates to the direct light that is used for to go out from light emitted and compile and shine the catoptron of the electronic flash equipment of the body that is taken by the reflected light of reflecting surface reflection.

Background technology

As reflecting mirror for electronic flash device in the past, has for example such as shown in figure 21 device (for example, patent documentation 1).

Figure 21 is the concept nature sectional view of reflecting mirror for electronic flash device in the past.

Reflecting mirror for electronic flash device in the past shown in Figure 21 (below, simply be called " catoptron ") 111, have: the light source that places light source (not shown) at central portion places portion 101; This light source place in the portion 101 form continuously on facial 104 and lower face 105.This wherein, last facial 104 and each inner face 104a, 105a of lower face 105, formed by the part of the cylinder curved surface of slightly cylindrical shape as a whole.In addition, each inner face 104a, 105a face mutually with respect to reference axis K, and each inner face 104a, 105a, are that benchmark forms symmetry up and down with reference axis K.Should go up each inner face 104a, 105a of face 104 and lower face 105, constitute the 1st reflecting surface.In addition, light source places portion 101, possesses: the central shaft with the above-mentioned light source that placed is central shaft O, is the cylinder face 102 cylindraceous that radius obtains with the external radius R of light source, and the inner face 102a of this cylinder face 102 constitutes the 2nd reflecting surface.

According to this catoptron 111, the light that penetrates from above-mentioned light source, or direct irradiation, or be transmitted into the place ahead from peristome 111a via the 1st reflecting surface or the 2nd reflecting surface.In addition, this emission keeps luminous intensity distribution angle α (for example 45 degree) shown in Figure 21 and carries out.

Patent documentation 1: the spy opens the 2004-212926 communique

Yet, in above-mentioned catoptron 111 in the past, form each inner face 104a, 105a of face 104 and lower face 105 by means of the part of the cylinder curved surface that is the general cylindrical shape shape as a whole.Each shape of this each inner face 104a, 105a, each size, employing is present in the so-called focus notion of aspheric curve and designs.For this reason, determine each shape, each size of each inner face 104a, 105a, comparatively difficulty by the simple geometric ray tracing.Usually, utilize mathematical formulae, carry out complicated coordinate figure and set, thus each shape of definite inner face 104a, 105a.

Under the situation of making catoptron 111, usually, owing to each shape and each size based on each inner face 104a, 105a design, therefore in each shape and each determining dimensions of each inner face 104a, 105a as described above, because of using mathematical formulae and carrying out complicated coordinate figure conversion, and cause following problem: make that the design effort of catoptron 111 is hard to tackle, and in the manufacturing of catoptron 111, need for a long time, and the manufacturing cost of catoptron 111 uprises.

At above-mentioned problem, purpose of the present invention is for providing a kind of reflecting mirror for electronic flash device, it can make the design project of reflecting mirror for electronic flash device comparatively simple, and can carry out the manufacturing of reflecting mirror for electronic flash device, and can reduce the manufacturing cost of reflecting mirror for electronic flash device with the short period.

Summary of the invention

Achieve the above object for addressing the above problem, reflecting mirror for electronic flash device of the present invention, have: constitute by the inner face of going up face of a catoptron, the inner face of lower face respectively, the configuration over the ground of practising physiognomy mutually with respect to reference field, and be formed with the 1st a pair of reflecting surface of peristome in the face side of described catoptron; Be configured in the rear side of described catoptron, and place the 2nd reflecting surface of the light source of drum in inside, the central shaft of described light source is positioned at described reference field, form described the 1st a pair of reflecting surface by the plane, in the section vertical with the central shaft of described light source looked, the line segment that connects the central shaft of each end of the 1st described a pair of reflecting surface be positioned at described the 2nd reflecting surface side and described light source, with respect to described reference field angulation is below 90 degree, and described the 2nd reflecting surface, in described section is looked, the tie point that has the tie point that is connected with a described end of a side the 1st reflecting surface and be connected with a described end of the opposing party's the 1st reflecting surface, in described section is looked between described tie point, be positioned between the described tie point of described peristome side, do not form circular shape, described the 2nd reflecting surface has: from the central shaft with described light source is that the cylinder face cylindraceous (43) that the central shaft of radius-of-curvature obtains promptly leaves the cylinder face that disposes from the outer peripheral face of described light source; And it is continuously facial and with described cylinder in described section is looked from the outstanding reflecting part of the outer peripheral face of described cylinder face, a plurality of projectioies of connecting of configuration and the outer peripheral face of described light source off and on the inner peripheral surface of described the 2nd reflecting surface, the formation air circulation is used the gap between the outer peripheral face of described the 2nd reflecting surface and described light source.

Therefore, compare by the reflecting surface in the past that the cylinder curved surface that is the general cylindrical shape shape constitutes as a whole with first reflecting surface, the operation of determining the shape and size of the 1st reflecting surface becomes comparatively simple, the design effort of catoptron becomes simple thus, and can make reflecting mirror for electronic flash device with the short time, and can reduce the manufacturing cost of reflecting mirror for electronic flash device.

Fig. 1 is the concept nature sectional view of reflecting mirror for electronic flash device of the 1st embodiment of expression the present application, especially represents the figure of profile.

Fig. 2 is expression based on the key diagram of the example of the reflection of light of the reflecting mirror for electronic flash device of Fig. 1 and light path.

Fig. 3 is expression based on the key diagram of the example catoptron of the electronic flash equipment of Fig. 1, reflection of light and light path.

Fig. 4 is expression based on the key diagram of the example catoptron of the electronic flash equipment of Fig. 1, reflection of light and light path.

Fig. 5 is expression based on the key diagram of the example catoptron of the electronic flash equipment of Fig. 1, reflection of light and light path.

Fig. 6 is expression based on the key diagram of the example catoptron of the electronic flash equipment of Fig. 1, reflection of light and light path.

Fig. 7 is expression based on the key diagram of the example catoptron of the electronic flash equipment of Fig. 1, reflection of light and light path.

Fig. 8 is expression based on the key diagram of the example catoptron of the electronic flash equipment of Fig. 1, reflection of light and light path.

Fig. 9 is expression based on the key diagram of the example catoptron of the electronic flash equipment of Fig. 1, reflection of light and light path.

Figure 10 is expression based on the key diagram of the example catoptron of the electronic flash equipment of Fig. 1, reflection of light and light path.

Figure 11 is expression based on the key diagram of the example catoptron of the electronic flash equipment of Fig. 1, reflection of light and light path.

Figure 12 is expression based on the key diagram of the example catoptron of the electronic flash equipment of Fig. 1, reflection of light and light path.

Figure 13 is the figure of design procedure of the reflecting mirror for electronic flash device of presentation graphs 1.

Figure 14 is the figure of design procedure of the reflecting mirror for electronic flash device of presentation graphs 2, the figure of the appearance when being expression with the step design different with Figure 13.

Figure 15 is the notion sectional view of reflecting mirror for electronic flash device of the 2nd embodiment of expression the present application.

Figure 16 is the notion sectional view of reflecting mirror for electronic flash device of the 3rd embodiment of expression the present application.

Figure 17 is the notion sectional view of reflecting mirror for electronic flash device of the 4th embodiment of expression the present application.

Figure 18 is the notion sectional view of reflecting mirror for electronic flash device of the 5th embodiment of expression the present application.

Figure 19 is the notion sectional view of reflecting mirror for electronic flash device of the 6th embodiment of expression the present application.

Figure 20 is the concept map of action of the reflecting mirror for electronic flash device of expression Figure 19.

Figure 21 is a notion sectional view of representing reflecting mirror for electronic flash device in the past.

1,21,31,51,71, the 91-reflecting mirror for electronic flash device among the figure:, the 2-light source, the central shaft of 2a-light source, 5, the 1st a pair of reflecting surface of 7-, 5a, 7a-are positioned at each end of the 1st a pair of reflecting surface of the 2nd reflecting surface side, 12,42,62-the 2nd reflecting surface, 13,43-cylinder face cylindraceous, 14,15,74, the 75-reflecting part, many projectioies of 19-, the 34-air circulation is used the gap, K-reference field, B1-O, B2-O, B1 '-O, B2 '-O-line segment.

Embodiment

Below, with reference to accompanying drawing, the reflecting mirror for electronic flash device to the present application in the 1st embodiment to the 6 embodiment describes.Be expression based on the key diagram of the example catoptron of the electronic flash equipment of Fig. 1, reflection of light and light path.

Embodiment 1

Fig. 1 be the expression the present application the 1st embodiment reflecting mirror for electronic flash device (below, be called " catoptron " simply) the notion sectional view, especially the figure that represents its profile, Fig. 2～Figure 12 is expression based on the key diagram of the example of the reflection of light of the catoptron of the electronic flash equipment of Fig. 1 and light path, Figure 13 is the figure of design procedure of the catoptron of presentation graphs 1, Figure 14 is the figure of design procedure of the catoptron of presentation graphs 1, is the figure of the appearance of expression when designing with the step different with Figure 13.In addition, to Figure 20 described later,, only illustrate its interior shape at Fig. 1 for catoptron.

The inner face of going up face 4 of the catoptron 1 of the 1st embodiment, such as shown in Figure 2, constitute the 1st reflecting surface 5.In addition, the inner face of the lower face 6 of catoptron 1 constitutes the 1st reflecting surface 7.In addition, the 1st reflecting

surface

5,7 that this is a pair of is with respect to reference field K and opposed facing mode disposes.In addition, the 1st reflecting

surface

5 and 7 is formed by the plane.The 1st reflecting

surface

5 and 7 is with respect to reference field K and symmetrical mode sets.

In addition, in the face side of catoptron 1, form peristome 1a.In addition, the rear side of catoptron 1 sets light source and places portion 11.In addition, place the inner face of portion 11, constitute the 2nd reflecting surface 12,, can place the light source 2 (Fig. 2) of drum in the inside of the 2nd reflecting surface 12 at light source.

Next,, describe in more detail,, in Fig. 1 to Figure 14, use the coordinate system that constitutes by X-axis and Y-axis, and be central shaft O with the intersection point of orthogonal X-axis and Y-axis for the facility that illustrates for the structure of the section of catoptron 1 etc.In addition, the reference field K of catoptron 1 is disposed on the X-axis.And some B1 represents the tie point of the 1st reflecting surface 5 and the 2nd reflecting surface 12.In addition, put B2, represent the tie point of the 1st reflecting surface 7 and the 2nd reflecting surface 12.In addition, some C1 is positioned at the point of a B1 side as the point of crossing of the 2nd reflecting surface 12 and Y-axis with respect to reference field K.In addition, some C2 is as the point that with respect to reference field K be positioned at some B2 side of the 2nd reflecting surface 12 with the point of crossing of Y-axis.In addition, the some D1 represent with central shaft O be benchmark and with the point-symmetric point of a B2.The point D2 represent with central shaft O be benchmark and with the point-symmetric point of a B1.

As shown in Figure 1, the 2nd reflecting surface 12 of catoptron 1 possesses: by the central shaft 2a with light source 2 is the cylinder face 13 cylindraceous that the central shaft O of radius-of-curvature obtains.This cylindrical portion face 13 is formed at the zone from the some B1 of the 2nd reflecting surface 12 to a C1 respectively, the zone from a D1 to D2 (comprising a G), the zone from a C2 to a B2.This each cylinder face 13 is the central shaft 2a of light source 2 with central shaft O, and the radius R 1 of its section is set in the mode identical with the external radius R of light source 2.

In addition, the 2nd reflecting surface 12 possesses: the central shaft O of clamping cylinder face 13 also is provided in and is formed at the reflecting part 14 of position (zone from a D1 to a C1) of facial 13 opposition sides of cylinder in the zone from a B2 to a C2.This reflecting part 14 is a benchmark with the central shaft O of cylinder face 13, forms, with respect to the asymmetrical shape that is shaped as of the cylinder face 13 that is formed at the zone from a B2 to a C2.

In addition, the 2nd reflecting surface 12 has: the central shaft O of clamping cylinder face 13, and be provided in and be formed at the reflecting part 15 of position (zone) of facial 13 opposition sides of cylinder in zone from a B1 to a C1 from a D2 to a C2.This reflecting part 15 is a benchmark with the central shaft O of cylinder face 13, forms the non-point symmetry shape that is shaped as with respect to the cylinder face 13 in the zone from a B1 to a C1.

In addition, reflecting

part

14,15, be that axle I1, I2 with beyond the central shaft 2a of light source 2 in the cylinder cylindraceous facial 13 that obtains of the central shaft O of radius-of-curvature are the central shaft of radius-of-curvature by central shaft 2a respectively, and the cylindrical portion cylindraceous that obtains (cylindrical portion different with cylindrical portion 12) constitute with light source 2.This reflecting

part

14,15 is a central shaft with I1, I2 respectively, forms by the cylinder that is set at cross sectional radius r1, r2 is facial respectively.In addition, reflecting part 14 forms respectively with as the some C1 at the two ends of cylinder face 13, the point consecutive mode of D1 with its two ends.In addition, reflecting part 15 forms respectively with as the continuous mode of some D2, the some C2 at the two ends of cylinder face 13 with its two ends.

In addition, in this catoptron 1, radius r 1, r2 all the inside radius r (Fig. 1) with light source 2 are identical.

In addition, connect each an end 5a, the 7a be positioned at the 1st reflecting

surface

5,7 the 2nd reflecting surface 12 sides, a pair of, with the line segment B1-O of the central shaft 2a of light source 2, B2-O respectively with respect to reference field K angulation β u, β d, all is set to below 90 degree.

In addition, as shown in Figure 1, be positioned at the respectively distance between an

end

5a, 7a of the 1st a pair of reflecting

surface

5,7 of the 2nd reflecting surface 12 sides, promptly put B1 and the distance of point between the B2, than be positioned at and each other end of the 1st a pair of reflecting

surface

5,7 of the 2nd reflecting surface 12 opposition sides between the distance promptly put between A1 and some A2 of distance little.

Next, Fig. 2 to Figure 12 of the reflection of light in this catoptron of use illustration and the example of light path describes for the catoptron 1 that places light source 2.

In addition, the catoptron 1 of the electronic flash equipment of the 1st embodiment is made as 45 degree (going up luminous intensity distribution angle α u is 22.5 degree, and following luminous intensity distribution angle α d is 22.5 degree) with maximum luminous intensity distribution angle α.

In the catoptron 1 of Fig. 2, be formed at the cylinder face 13 in zone from a B1 to a C1, the zone from a D1 to a D2 (comprising a G), zone respectively from a B2 to C2, it is central shaft that its section becomes with central shaft O, by radius of curvature R 1 resulting circular shape.Therefore, at the light from light source 2 emission, directly or behind the reflection back (comprising multipath reflections such as a heavily reflection, two-fold reflection) and incide under the situation of each cylinder face 13, this light reflects in the mode of the central shaft 2a by light source 2.

In addition, be formed at the reflecting part 14 in zone from a C1 to a D1, be formed at the position of central shaft with facial 13 opposition sides of the cylinder that is formed at zone of clamping cylinder face 13 from a C2 to a B2, and, this reflecting part 14, with central shaft O is benchmark, forms asymmetrical shape with respect to the shape of the cylinder face 13 that is formed at the zone from a C2 to a B2.Specifically, reflecting part 14 forms as follows: promptly to become with axle I1 be that the center is by the resulting circular shape of radius-of-curvature r1 (different with the radius R 1 of cylindrical portion face 13) to its section.Therefore, the light from light source 2 is launched directly or after the reflection (comprising multipath reflections such as a heavily reflection, two-fold reflection) is inciding under the situation of reflecting part 14, and this light is that benchmark reflects with axle I1.

In addition, be formed at the reflecting part 15 in zone from a D2 to a C2, be formed at the central shaft O that inserts and puts cylinder face 13 and with the position of facial 13 opposition sides of the cylinder that is formed at zone from a B1 to a C1, and this reflecting part 15, with central shaft O is benchmark, with respect to the shape of the cylinder face 13 that is formed on zone, and form asymmetrical shape from a B1 to a C1.Specifically, reflecting part 15 forms as follows: promptly to become with axle I2 be that the center is by the resulting circular shape of radius-of-curvature r2 (different with the radius R 1 of cylindrical portion face 13) to its section.Therefore, the light from light source 2 is launched directly or after the reflection (comprising multipath reflections such as a heavily reflection, two-fold reflection) is inciding under the situation of reflecting part 15, and this light is that benchmark reflects with axle I2.

Below, if more specifically describe, then Fig. 2 represents from the central shaft 2a ejaculation of light source 2 and towards the light in the place ahead the figure of the light path of the light S2 in light S1 in the scope of last luminous intensity distribution angle α u and the scope of following luminous intensity distribution angle α d.In this case, light S1 and light S2, from the some A1 of the peristome 1a side front end of the 1st a pair of reflecting

surface

5,7 in the scope of an A2, in the promptly maximum luminous intensity distribution angle α (α=α u+ α d), former state advance point-blank and be transmitted into catoptron face side (below, be called " the place ahead ".)。

In addition, as shown in Figure 2, towards the light in the place ahead, surpass the angular range of last luminous intensity distribution α u and light S3 between angle beta u penetrating from the central shaft 2a of light source 2, be irradiated to the 1st reflecting surface 5, and reflected and launch forwards by the 1st reflecting surface 5.

In addition, as shown in Figure 2, towards the light in the place ahead, surpass the angular range of last luminous intensity distribution α d and light S4 between angle beta d penetrating from the central shaft 2a of light source 2, be irradiated to the 1st reflecting surface 7, and reflected and launch forwards by the 1st reflecting surface 7.

In addition,, shine the light S5 of a B1, be positioned on the 1st reflecting surface 5 owing to put B1, therefore according to illustrated, by the 1st concurrent directive the place ahead that reflecting surface 5 reflects with light S3 with angle beta u as for from the central shaft 2a ejaculation of light source 2 and towards the light in the place ahead.In addition, its transmit direction is and is connected the direction that the direction of line segment of central shaft O and some A2 parallels, and can prevent the diffusion of the light of catoptron 1 thus, and keep focusing.

In addition,, shine the light S6 of a B2, be positioned on the 1st reflecting surface 7, thus according to illustrated, by 7 reflections of the 1st reflecting surface and emission forwards with light S4 owing to put B2 with angle beta d as for from the central shaft 2a ejaculation of light source 2 and towards the light in the place ahead.In addition, its transmit direction is and is connected the direction that the direction of line segment of central shaft O and some A1 parallels, and can prevent the diffusion of the light of catoptron 1 thus, and keep focusing.

In addition, as shown in Figure 3 and Figure 4, penetrate and towards the light in the place ahead from the central shaft 2a of light source 2, be radiated at the light S7 and the S8 of the cylinder face 13 that is formed at zone from a B1 to a C1, after turning back to central shaft O towards the opposition side by the light path former state of coming, the former state straightaway thereafter, shines the reflecting part 15 of the 2nd reflecting surface 12.

So, in light S7 that shines this reflecting part 15 and S8, as shown in Figure 3, from the rear side that more is close to catoptron 1 than axle I2 (below, be called " rear ") and irradiation to the light S7 of reflecting part 15, change direction corresponding to incident angle (is benchmark with axle I2) to reflecting part 15, and reflection, arrive the 1st reflecting surface 5, and then by 5 reflections of the 1st reflecting surface, and be transmitted into the place ahead.

On the other hand, as shown in Figure 4, from shining light S8 than the more close the place ahead of axle I2, corresponding to the incident angle (is benchmark with axle I2) of reflecting part 15 and change direction and reflection, thereby reach reflecting part 14 to reflecting part 15.This time S8 arrives reflecting part 14 from the rear side than the more close catoptron 1 of axle I1.In addition, arrive the light S8 of reflecting part 14, corresponding to the incident angle (is benchmark with axle I1) of reflecting part 14 and change direction and reflection, and arrive the 1st reflecting surface 7, and reflect and forwards launch by the 1st reflecting surface 7.

In addition, as Fig. 5 and as shown in Figure 6, the light that penetrates from the central shaft 2a of light source 2 is the light at the rear of orientating reflex mirror 1, also promptly shine to the light S9 and S10 of the reflecting part 14 that is formed at zone from a C1 to a D1, as shown in Figure 5 from arrive the light S9 of reflecting part 14 than the more close the place ahead of axle I1, corresponding to the incident angle (is benchmark with axle I1) of this reflecting part 14 and change direction reflects, and arrive reflecting part 15.At this moment, light S9 is from arriving reflecting part 15 than the more close rear of axle I2.In addition, arrive the light S9 of reflecting part 15, change direction and reflection corresponding to incident angle (is benchmark with axle I2), thereby arrive the 1st reflecting surface 5 to reflecting part 15, and then, the emission forwards by the reflection of the 1st reflecting surface.

On the other hand, as shown in Figure 6, arrive the light S10 of reflecting part 14 than the more close rear of axle I1, changing direction corresponding to the incident angle (is benchmark with axle I1) to reflecting part 14 reflects, and arriving the 1st reflecting surface 7, emission is forwards by 7 reflections of the 1st reflecting surface.

In addition, as shown in Figure 7 from the light that the central shaft 2a of light source 2 sends, the light at the rear of orientating reflex mirror 1 promptly shines the light to the cylinder face 13 that is formed at the zone from a D1 to a G, such shown in light S11, along light path by coming, former state is returned to central shaft towards opposition side, former state is advanced point-blank and is transmitted into the place ahead, perhaps such shown in light S12, after turning back to central shaft O along returning towards opposition side by the light path former state of coming, arrive the 1st reflecting surface 7, and reflected and emission forwards by the 1st reflecting surface 7.

In addition,, promptly shine light S13 to a D1 towards the light at the rear of catoptron 1 as shown in Figure 2 from the light of the central shaft 2a outgoing of light source 2, along light path by coming, after former state turns back to central shaft O towards opposition side, arrival B2.In addition, arrive the light S13 of this B2, launch forwards with light S6 is same.In addition, its transmit direction is and is connected the direction that parallels of direction of central shaft O and some A1, thus, can prevent the diffusion of the light of catoptron 1, and can keep optically focused.

In addition, as shown in Figure 8 from the light of the central shaft 2a outgoing of light source 2, promptly shine light towards the light at the rear of catoptron 1 to the cylinder face 13 that is formed at zone from a G to a D2, such shown in light S14, along light path by coming, former state arrives the 1st reflecting surface 5 after turning back to central shaft O towards opposition side, and is reflected and emission forwards by the 1st reflecting surface 5.Perhaps, as light S15, along the light path by coming, former state is returned, and towards opposing side, turn back to central shaft O after, former state is advanced and emission forwards point-blank.

In addition, as shown in Figure 2 from the light of the central shaft 2a outgoing of light source 2, promptly shine light S16 to a D1 towards the light at the rear of catoptron 1, along light path by coming, after former state turns back to central shaft O towards opposition side, arrival B1.Therefore arrive the light S16 of this B1, launch forwards with light S5 is same.In addition, its transmit direction is and is connected the direction that parallels of direction of central shaft O and some A2, thus, can prevent the diffusion of the light of catoptron 1, and can keep optically focused.

In addition, as Fig. 9 and shown in Figure 10, the light at the rear of orientating reflex mirror 1 from the light that the central shaft 2a of light source 2 penetrates, also promptly shine to the light S17 and S18 of the reflecting part 15 that is formed at zone from a D2 to a C2, as shown in Figure 9 from arrive the light S17 of reflecting part 15 than the more close rear of axle I2, reflect corresponding to incident angle (is benchmark with axle I2) change direction, and arrive the 1st reflecting surface 15 to this reflecting part 15, and the emission forwards by 15 reflections of the 1st reflecting surface.

In addition, as shown in Figure 10,, reflect, and arrive reflecting part 14 corresponding to incident angle (is benchmark with axle I2) change direction to this reflecting part 15 from shine the light S18 of reflecting part 15 than the more close the place ahead of axle I1.At this moment, light S18 is from than the rear of the more close catoptron 1 of axle I1 and arrive reflecting part 14.Thereafter, this light S18 reflects corresponding to incident angle (is benchmark with the axle I1) change direction to this reflecting part 14 and to arrive the 1st reflecting surface 7, and by 7 reflections of the 1st reflecting surface and emission forwards.

In addition, as Figure 11 and as shown in Figure 12, from the light that the central shaft 2a of light source 2 penetrates, the light in the place ahead of orientating reflex mirror 1 promptly shines the light S19 and the S20 of the cylinder face 13 that is formed at the zone from a C2 to a B2, along by the light path former state of coming after opposition side turns back to central shaft O, former state ground straightaway shines reflecting part 14 thereafter.

Among this light S19 and the S20 as shown in Figure 11 from shining the light S19 of reflecting part 14 than the more close the place ahead of axle I1, corresponding to the incident angle (is benchmark with axle I1) of reflecting part 14 and change direction, and reflection and shine reflecting part 15.In addition, at this moment, light S19 is from shining than the more close rear side of axle I2.And the light S19 that arrives reflecting part 15 is according to the incident angle (is benchmark with axle I2) of reflecting part 15 and change direction, and reflection and arrive the 1st reflecting surface 5, and by reflection of the 1st reflecting surface and emission forwards.

In addition, as shown in Figure 12, from than the more close rear of axle I1 and to the light S20 of reflecting part 14 irradiation, according to the incident angle (is benchmark with axle I1) of reflecting part 14 and change direction and reflection, and arrive the 1st reflecting surface 7, forwards launch by 7 reflections of the 1st reflecting surface.

So, catoptron 1, because having the plane of facing the ground configuration with respect to reference field K mutually is the 1st a pair of reflecting

surface

5,7, therefore the light of forwards launching from light source 2 directly can be launched forwards, or launched forwards via 5,7 reflections of the 1st reflecting surface.

In addition, to face one another the plane that disposes mutually with respect to reference field K be the 1st a pair of reflecting surface 5 owing to catoptron 1 possesses, 7, and possesses the 2nd reflecting surface 12 of the light source 2 that places drum in inside, and make becoming of the 2nd reflecting surface 12, have the central shaft 2a of light source 2 as the central shaft O of radius-of-curvature and the cylinder face 13 that obtains, and clip the central shaft O of cylinder face 13 and be disposed at position with facial 13 opposition sides of cylinder, and with central shaft O is benchmark forms asymmetrical shape with respect to the shape of cylinder face 13 reflecting

part

14,15, therefore from the rearward light of light source 2 emissions, also by the 2nd reflecting surface 12, perhaps, forwards launch by the 2nd reflecting surface 12 and the 1st reflecting surface 5 or 7.For this reason, can improve the reflection efficiency of catoptron 1, and can do one's utmost to suppress the heat interchange that the reflection-absorption by catoptron 13 inside causes and output to the outside, with more light as effectively light utilization.

Like this, according to catoptron 1,,, and in the luminous intensity distribution angle of regulation, carry out the emission of efficient the best perhaps by reflection based on the

1st reflecting surface

5,7 or the 2nd reflecting surface 12 by will be direct by the light that light source 2 sends.

In addition, this catoptron 1 as described above, can realize preventing by means of the multipath reflection of catoptron inner face the action effect of the reduction of reflection efficiency by means of the reflecting surface that is formed by reflecting surface and barrel surface.

Next, the step that designs this catoptron 1 is described, still, here so that the maximum luminous intensity distribution angle α of catoptron 1 is the situations of 45 degree (going up luminous intensity distribution angle α u is 22.5 degree, and following luminous intensity distribution angle α d also is 22.5 degree) describes for representative.

At first, as shown in Figure 13, be in the coordinate system of the X-axis of intersection point and Y-axis having with central shaft O, in center O, the central shaft 2a of configuration light source 2.Next, draw picture is angle [alpha] u, α d respectively with respect to X-axis line P1, P2 (being equivalent to axial plane) from this center O.

Next, the H of point arbitrarily on the selection X-axis, and determine to comprise this H and be parallel to the axle of Y-axis and some A1, the A2 that line P1, P6 intersect.In addition, by selected element H, determine center O and tie point A1 and the some A2 optical axis between distance, promptly the depth from center O to peristome 1a has been determined.In addition, the distance between some A1 and the some A2 is the peristome size.Next,, extend the plane towards the profile of light source 2 respectively, and the intersection point that will intersect with the profile of light source 2 is as B1, B2 according to an A1 and some A2.Here, about intersection points B 1, be that following point is selected: i.e. the illumination of penetrating from center O is mapped under the situation of a B1, is that the angle identical with α d promptly 22.5 spent to the light that shines on the plane reflection plate that comprises an A1 and some B1 and reflected by this plane reflection plate with respect to the angle γ u that X-axis became.In addition, about a B2, be that following point is selected: i.e. illumination from center O is mapped under the situation of a B2, shines on the plane reflection plate that comprises an A2 and some B2 and is i.e. 22.5 degree of the angle identical with α u by light that this plane reflection plate reflected with respect to angle γ d that X-axis became.Like this, if determine some B1 and some B2, then can determine the size and dimension of the 1st reflecting surface 5,7.

In addition, utilize the size and dimension that to determine the

1st reflecting surface

5,7 with above-mentioned step diverse ways.

For example, as shown in Figure 14, at random the distance between set point A1 and the some A2 is the peristome size in advance, and sets some A1 and the A2 that satisfies this peristome size.At this moment, some A1 and some A2 are set on the optical axis parallel with Y-axis.In addition, from the mid point H of tie point A1, be configured on the X-axis with the line of some A2.Next,, extend the plane towards the profile of light source 2 respectively, and the intersection point that will intersect with the profile of light source 2 is as B1, B2 according to an A1 and some A2.Here, about intersection points B 1, select following such point: i.e. illumination from center O is mapped under the situation of a B1, shines on the plane reflection plate that comprises an A1 and some B1 and the light that is reflected by this plane reflection plate, with respect to the angle γ u that X-axis became, be that the angle identical with α d is 22.5 degree.In addition, about a B2, select following such point: i.e. illumination from center O is mapped under the situation of a B2, shines on the plane reflection plate that comprises an A2 and some B2, and is i.e. 22.5 degree of the angle identical with α u by light that this plane reflection plate reflected with respect to angle γ d that X-axis became.If determined such some B1 and put B2, then can determine center O and tie point A1 and the some A2 optical axis between distance, that is to say the distance that automatically to determine from center O to peristome 1a, thus, can determine the size and dimension of the 1st reflecting surface 5,7.

In addition, under any situation in the method for designing of two catoptrons 1 stating in the use, in designed catoptron 1, connecting line B1-O, the B2-O of the central shaft 2a of each an

end

5a, 7a of a pair of the

1st reflecting surface

5,7 be positioned at described the 2nd reflecting surface side and light source 2, is below 90 degree with respect to reference field K angulation.

In addition, in catoptron 1, suppose that the 2nd reflecting surface 12 only is made of by the resulting cylinder cylindraceous facial 13 of the central shaft O of radius-of-curvature the central shaft 2a with light source 2, then at the light of launching from light source 2, be directly incident on zone (comprising a G) from a D1 to a D2, or under the situation of incident after the reflection (comprising multipath reflections such as a heavily reflection, two-fold reflection), this light is issued to the outside of cylinder face 11., from the light that light source 2 irradiates, shine each light in regional or zone respectively, do not send to the outside of cylinder face 11 from a C2 to a B2 from a C1 to a D1.For this reason, in the catoptron of the present application, a wherein side the zone the zone from a C2 to a B2, zone from a C1 to a D1 has reflecting part 14.In the catoptron 1 of the 1st embodiment, as Figure 13 and shown in Figure 14, at the 2nd reflecting surface 12, be provided with: be disposed at clamping cylinder face 13 central shaft O and with the position of facial 13 opposition sides of the cylinder that is formed at zone from a C2 to a B2, and form, with this central shaft O is benchmark, with respect to the reflecting part that is shaped as asymmetrical shape 14 (zone from a C1 to a D1) of the cylinder face 13 that is formed at the zone from a C2 to a B2.

In addition, in catoptron 1, suppose that the 2nd reflecting surface 12 is that the resulting cylinder face 13 cylindraceous of central shaft O of radius-of-curvature constitutes by the central shaft 2a with light source 2 only, then from the light of light source 2 irradiations, shine the zone from a B1 to a C1, each light in zone respectively, do not emit to the outside of cylinder face 11 from a D2 to a C2.For this reason, in the catoptron of the present application, a wherein side the zone the zone from a B1 to a C1, zone from a D2 to a C2 has reflecting part 15.

In the catoptron 1 of the 1st embodiment, as Figure 13 and as shown in Figure 14, at the 2nd reflecting surface, be provided with: be equipped on the central shaft O that clips cylinder face 13 and with the position of the opposition side of the cylinder face 13 that is formed at zone from a B1 to a C1, it forms, with central shaft O is benchmark, with respect to the reflecting part that is shaped as asymmetrical shape 15 (zone from a D2 to a C2) of the cylinder face 13 that is formed at the zone from a B1 to a C1.

In order to ask for this reflecting

part

14,15, at first, selecting central shaft 2a with light source is axle I1, I2 beyond the central shaft 2a in the cylinder cylindraceous facial 13 that obtains of the center O of radius-of-curvature, light source 2.This I1 is to be positioned to leave a C1 and the equidistant axle of axle D1, and makes an I2 leave a C1 and the equidistant axle of axle D2 for being positioned at.If select this axle I1, I2 respectively, then the two ends of reflecting part 14 connect some C1, the D1 as the two ends of cylinder face 13 respectively, and perhaps the two ends of reflecting part 15 connect some C2, the D2 as the two ends of cylinder face 13 respectively.

In addition, determine respectively cylinder face cylindraceous that axle I1, I2 are obtained as the central shaft of each radius-of-curvature, for example with central shaft as I1, I2, and be set at the barrel surface (the 1st barrel surface) of cross sectional radius r1, r2.For example, also can, as described in this embodiment 1, set radius r 1, r2 identical with the inside radius r of the section of one of them light source 2.

Like this, can be by determining each shape and each size of the

1st reflecting surface

5,7, and then determine the shape and size of the 2nd reflecting surface 12 and carry out the design of catoptron 1.

In addition, catoptron 1 of the present invention, has the 1st a pair of reflecting surface 5 that faces one another with respect to benchmark K and dispose, 7, and inner the 2nd reflecting surface 12 that places the light source 2 of drum, be arranged in the mode of reference field K and the catoptron that is configured at central shaft 2a with light source 2, form the 1st a pair of reflecting surface 5 with the plane, 7, and connect and be positioned at the 1st a pair of reflecting surface 5 of the 2nd reflecting surface 12 sides, each end 5a of 7, the line B1-O of the central shaft 2a of 7a and light source 2, B2-O, with respect to reference field K angulation is below 90 degree, catoptron 1 thus, is made of plane and barrel surface.For this reason, in the 1st catoptron 1, employed so-called focus notion when not using as shown in figure 21 catoptron in the past promptly the 1st reflecting surface is as a whole by the shape and size of definite the 1st reflecting surface in the formed catoptron in the past 111 of the part of the cylinder curved surface that forms rough drum.And, do not use employed in the past mathematical formulae or carry out complicated coordinate figure setting, and determine the shape and size of the 1st reflecting surface by the simple geometric ray tracing.Like this, compare, determine that the shape and size of the 1st reflecting surface become simple with catoptron in the past, therefore, the design project of catoptron 1 can be oversimplified, and can carry out the manufacturing of catoptron 1, and can reduce the manufacturing cost of catoptron 1 with the short time.

In addition, the catoptron 1 of the present application, has a pair of the 1st reflecting surface 5 of practising physiognomy mutually and disposing over the ground with respect to reference field K, 7, and inner the 2nd reflecting surface 12 that places the light source 2 of drum, and be arranged in the mode of reference field K and the catoptron that designs with the central shaft 2a of light source 2, form the 1st a pair of reflecting surface 5 with the plane, each end 5a of 7,7a, the line segment B1-O that connects the central shaft 2a of light source 2, B2-O, with respect to reference field K angulation is below 90 degree, the distance that the peristome size is promptly put between A1 and the some A2 is compared with the past shorter, and can make the size of depth promptly compared with the past shorter to the distance of a H from an O, in addition, can make above-mentioned peristome be of a size of the value littler than the external radius R of light source 2.

Embodiment 2

Figure 15 is the notion sectional view of the catoptron of the 2nd embodiment of the present invention.

In the catoptron 21 of the 2nd embodiment, at the position

configuration reflecting part

14,15 different with the catoptron 1 of the 1st embodiment.This reflecting part 14, be equipped on the central shaft O that clips cylindrical portion 13 and with the position (zone) of the opposition side of the cylinder face 13 that is formed at zone from a D2 to a C2 from a B1 to a C1, and with central shaft O is benchmark, with respect to the asymmetrical shape that is shaped as of the cylinder face 13 that is formed at the zone from a D2 to a C2.In addition, reflecting part 14, the mode continuous respectively with putting B1, some C1 with its two ends forms.

In addition, reflecting part 15 is equipped on, clip cylinder face 13 central shaft O and with the position (zone) of cylindrical portion 13 opposition sides that are formed at zone from a C1 to a D1 from a C2 to a B2, and, form, with central shaft O is benchmark, with respect to the asymmetrical shape that is shaped as of the cylinder face 13 that is formed at the zone from a C1 to a D1.In addition, about reflecting part 15, form with a B2, the consecutive mode of some C2 respectively with its two ends.

In addition, because other formation and previous embodiment are same, therefore omit its explanation for the same symbol of identical part additional phase.

In the catoptron 21 of this 2nd embodiment, at the light of launching from light source 2, directly or incide the cylinder face 13 that is formed at the zone from incidence point C1 to a D1 after the reflection (comprising multipath reflections such as a heavily reflection, two-fold reflection), be formed at zone (comprising a G) 13 from a D1 to a D2, be formed under the situation of cylinder face 13 in the zone from a D2 to a C2, this light reflects in the mode of the central shaft 2a by light source 2.In addition, at the light from light source 2 emission, directly or after the reflection (comprising multipath reflections such as a heavily reflection, two-fold reflection), inciding under the situation of the reflecting part 14 that is formed at the zone from a B1 to a C1, is that benchmark reflects with axle I1.In addition, the light from light source 2 is launched directly or after the reflection (comprising multipath reflections such as a heavily reflection, two-fold reflection) incides under the situation of the reflecting part 15 that is formed at the zone from a C2 to a B2, is that benchmark reflects with axle I2.

Therefore, in the catoptron 21 of the 2nd embodiment, same with the catoptron 1 of the 1st embodiment, will be direct from the light that light source 2 sends, or by means of the reflection by the

1st reflecting surface

5,7 or the 2nd reflecting surface 12, and in the luminous intensity distribution angle of regulation, all can launch respond wellly.

In addition, in this catoptron 21, can play the action effect same with the catoptron 1 of above-mentioned the 1st embodiment.

Embodiment 3

Figure 16 is the notion sectional view of the catoptron of the 3rd embodiment of the present invention.

In the catoptron 31 of the 3rd embodiment, the 2nd reflecting surface 42 has: the central shaft 2a with light source 2 is the cylinder face 43 cylindraceous that central shaft O obtains, and promptly leaves from the outer peripheral face of light source 2 and disposes cylinder face 43.Set the radius R 1 of the section of this cylinder face 43 in the mode bigger than the external radius R of light source 2.In addition, in the 2nd reflecting surface 42, with the outer peripheral face butt of light source 2 a plurality of protruding 19 mutually across the compartment of terrain, promptly set off and on.

In addition, the 2nd reflecting surface 42, the zone identical with the 2nd reflecting surface 12 of the reflecting

part

14,15 of the catoptron 1 of embodiment 1 has reflecting

part

14,15 respectively.Wherein, in embodiment 3, radius r 1, the r2 of reflecting

part

14,15 are set in the mode bigger than the inside radius r of light source 2.In addition, radius r 1 is identical size with radius r 2.

In addition, because other formations are identical with aforesaid embodiment, therefore omit its explanation for the same symbol of same section additional phase.

In the catoptron 31 of the 3rd embodiment, at the 2nd reflecting surface 42, off and on configuration contact with the outer peripheral face of light source 2 a plurality of protruding 19, formation air circulation usefulness gap 34 between the outer peripheral face of the 2nd reflecting surface 42 and light source 2 thus.Therefore, from the heat that light source 2 produces, with air circulation air in the gap 34, one coexists this air circulation with circulating in the gap 34.For this reason, can stop the danger of the catoptron that caused by this heat 31 damages as far as possible, particularly, under the situation that the height output discharge tube that will apply high pressure uses as the light source of catoptron 31, the catoptron 1 of the 3rd embodiment is effective.

In addition, above-mentioned a plurality of projection 19 has that outer peripheral face with light source 2 connects and the function that supports this light source 2.

In addition, in this catoptron 31, played the action effect same with the catoptron 3 of above-mentioned the 1st embodiment.

Embodiment 4

Figure 17 is the notion sectional view of catoptron of the 4th embodiment of the present application.

The catoptron 31 of this catoptron 51 and the 3rd embodiment is same, has cylinder face 43 at the 2nd reflecting surface 42.In addition, same with the catoptron 31 of the 3rd embodiment between the 2nd reflecting surface 42 and light source 2, the folder person a plurality of protruding 19.

In addition, at the 2nd reflecting surface 42, the zone same with the reflecting

part

14,15 of the catoptron 23 of embodiment 2

forms reflecting part

14,15, forms cylinder face 13 in the zone identical with the cylinder facial 13 of the catoptron 21 of embodiment 2.

In addition, in the catoptron 51 of the 4th embodiment, radius r 1, the r2 of reflecting

part

14,15 are bigger than the inside radius r of light source 2.In addition, radius r 1 is identical size with radius r 2.

In addition, other formation and aforesaid embodiment are same, omit its explanation for the same symbol of same section additional phase.

Catoptron 51 according to this 4th embodiment, same with the catoptron 31 of the 3rd embodiment, use gap 34 by air circulation, can stop as far as possible because of the heat that produces from light source 2 and make the danger of catoptron 13 damages, particularly will apply under the situation that high-tension high output discharge tube uses as the light source of catoptron, the catoptron 51 of the 4th embodiment is effective.

In addition, above-mentioned a plurality of projection 19 connects and supports on these light source 2 this point having outer peripheral face with light source 2, and is same with the catoptron 31 of the 3rd embodiment.

In addition, in this catoptron 51, played the action effect same with the catoptron 1 of above-mentioned the 1st embodiment.

Embodiment 5

Figure 18 is the notion sectional view of catoptron of the 5th embodiment of the present application.

In the catoptron 71 of the 5th embodiment, the 2nd reflecting surface 62, identical with the 4th catoptron 51, have cylinder face 43.In addition, in the 2nd reflecting surface 62, configuration and a plurality of protruding 19 of the outer peripheral face butt of light source 2 off and on.

In addition,, has reflecting

part

74,75 respectively, to substitute the reflecting

part

14,15 of the 4th embodiment 51 at the 2nd reflecting surface 62.

Wherein, reflecting part 74, by the plane from a B1 to an E1 76 and the plane from a C1 to an E1 77 and form, the distance from a B1 to an E1 is identical with distance from a B1 to an E1.

In addition, reflecting part 75, by the plane from a B2 to an E2 78, from a C2 to an E2 plane 79 and form, and distance from a B2 to an E2, identical with distance from a C2 to an E2.

In addition, because other structures are identical with previous embodiment, therefore omit its explanation for the same symbol of same section additional phase.

In the catoptron 71 of the 5th embodiment, form the 1st a pair of reflecting

surface

5,7 with the plane, and the angle that the line segment B1-O, the B2-O that connect the central shaft 2a of each an

end

5a, 7a of the 1st a pair of reflecting

surface

5,7 be positioned at the 2nd reflecting surface 42 sides and light source 2 form with respect to reference field K is below 90 degree, therefore needless to say can play the same action effect of catoptron with the

catoptron

1,51 of the 1st embodiment and the 4th embodiment.

Embodiment 6

Figure 19 is the notion sectional view of catoptron of the 6th embodiment of expression the present application.

In the catoptron 91 of the 6th embodiment, each an end 5a, the 7a that is positioned at the 2nd reflecting surface 12 sides except the 1st a pair of reflecting

surface

5,7 is the point that can move, and is identical with the formation of the 1st the 1st catoptron 3.

In this catoptron 91, each an

end

5a, 7a of the 1st a pair of reflecting

surface

5,7 moves, for example carry out as follows: promptly as shown in figure 20, be the center with each other end of the

1st reflecting surface

5,7 that lays respectively at an A1, A2, each an

end

5a, 7a are rotated.

In addition, the catoptron of other formation and previous embodiment is same, omits its explanation for the same symbol of same section additional phase.

In addition, in Figure 19, the example as the light path of forwards launching from light source 2 illustrates from light S21 to light S24.Represent with solid line: the light path of the light of light S21 point of irradiation A1, the light path of the light of light S22 point of irradiation A2, the light path of the light of light S23 point of irradiation B1, the light path of the light of light S24 point of irradiation B2.

In addition, Figure 20 is that an end 5a of expression the 1st reflecting surface 5 moves to a B1 ' from a B1, and an end of the 1st reflecting surface 7 moves under the situation of a B2 ' from a B2, the figure of the example of the light path of the light of forwards launching from light source 2 distinguishes the light path of corresponding light S21 ' to S24 ' with the solid line diagram with the light S21 to S24 of Figure 19.That is to say, illustrate: light S21 ' shines the light path of the light of an A1; Light S22 ' shines the light path of the light of an A2; Light S23 ' is by the light path of the light of a B1; Light S24 ' is by the light path of the light of a B2.

In addition, in Figure 19, illustrate the

1st reflecting surface

5,7 after moving, and illustrate each light path of the light S20 to S23 before moving with two dot dot dash with a little line.

In the catoptron 91 of the 6th embodiment that constitutes by this structure, each an

end

5a, 7a of the

1st reflecting surface

5,7, be disposed at respectively under the situation of initial position point B1, the B2 shown in Figure 19, the line segment B1-O, the B2-O that connect the central shaft 2a of this each an

end

5a, 7a and light source 2 are below 90 degree with respect to reference field K angulation.

In addition, each an

end

5a, 7a at the

1st reflecting surface

5,7 are disposed at respectively under the situation of location point B1 ', B2 ' after moving as shown in Figure 20, and line segment B1 '-O, the B2 '-O that connects the central shaft 2a of an

end

5a, 7a and light source 2 is below 90 degree with respect to reference field K angulation.

In addition, in the catoptron 91 of the 6th embodiment, can change from light source 2 and send and incide the light of the

1st reflecting surface

5,7 by these reflecting

surface

5,7 angles that reflected (luminous intensity distribution angle).

In the catoptron 91 of this embodiment 6, form each an

end

5a, 7a of the 1st a pair of reflecting

surface

5,7 with the plane, and the line segment B1-O, the B2-O that connect the central shaft 2a of light source 2 are below 90 degree with respect to reference field K angulation, and therefore much less this catoptron 91 can play the action effect identical with the catoptron 3 of embodiment 1.

In addition, the catoptron 91 of the 6th embodiment can move according to the mode identical with 7a with each end 5a of the

1st reflecting surface

5,7, in addition, according to necessity each an

end

5a, 7a is moved respectively mutually independently.

In addition, current in digital camera device, miniaturization by imaging apparatus and storer etc., the miniaturization of camera head self is also in progress, but in the

catoptron

1,21,31,51,71,91 of the 1st to the 6th embodiment of the present application, can reduce the peristome size of catoptron, and can reduce the depth size of catoptron, therefore by using this each catoptron, can make also miniaturization of camera head.

In addition, the present invention is not limited only to the aforesaid way shown in the above-mentioned convex surface, can do various distortion in the scope that does not break away from its main idea.

For example, as the light source that places in this catoptron, can use fluorescent light (thermionic-cathode tube, cold-cathode tube etc.), columnar tubular light source.

In addition, from needless to say, in the catoptron of this invention, as long as constituting the reflecting part of the 2nd reflecting surface is equipped on, the central shaft O of clamping cylinder face and with the position of the facial opposition side of this cylinder, and with central shaft O is benchmark and getting final product with respect to the non-point symmetry of being shaped as of this cylinder face, and is not limited to use as each reflecting

part

75,77 of the catoptron of the 6th embodiment the shape on two planes.

In addition, although understand the

catoptron

1,21,31,51 of above-mentioned the 1st embodiment and even the 4th embodiment, and the size of each radius r1, r2 of the reflecting

part

14,15 that sets separately in the catoptron 91 of the 6th embodiment is identical mutually, but the size of each radius r1, r2 also can be different mutually.In addition, the size of each radius r1, r2 also need not be identical with the inside radius of light source 2.

The reflecting mirror for electronic flash device of the present application can be used for for example camera, video camera and other e-machines, ligthing paraphernalia etc.

Claims

1. a reflecting mirror for electronic flash device (31,51,71) is characterized in that,

Have:

Constitute by the inner face of going up facial (4) of a catoptron (31,51,71), the inner face of lower face (6) respectively, the configuration over the ground of practising physiognomy mutually with respect to reference field, and be formed with the 1st a pair of reflecting surface (5,7) of peristome in the face side of described catoptron;

Be configured in the rear side of described catoptron, and place the 2nd reflecting surface of the light source of drum in inside,

The central shaft of described light source is positioned at described reference field,

Form described the 1st a pair of reflecting surface by the plane,

In the section vertical with the central shaft of described light source looked, connect each end of the 1st described a pair of reflecting surface be positioned at described the 2nd reflecting surface side and the line segment of the central shaft of described light source, with respect to described reference field angulation be 90 spend below, and

Described the 2nd reflecting surface (42,62), in described section is looked, the tie point (B2) that has the tie point (B1) that is connected with a described end of a side the 1st reflecting surface and be connected with a described end of the opposing party's the 1st reflecting surface, in described section is looked between described tie point (B1, B2), between the described tie point that is positioned at described peristome (1a) side (B1, B2), do not form circular shape

Described the 2nd reflecting surface (42,62) has:

From the central shaft with described light source is that the cylinder face cylindraceous (43) that the central shaft of radius-of-curvature obtains promptly leaves the cylinder face (43) that disposes from the outer peripheral face of described light source; And

In described section is looked with described cylinder face (43) continuously and from the outstanding reflecting part (14,15,74,75) of the outer peripheral face of described cylinder face (43),

A plurality of projectioies of connecting of configuration and the outer peripheral face of described light source off and on the inner peripheral surface of described the 2nd reflecting surface, the formation air circulation is used the gap between the outer peripheral face of described the 2nd reflecting surface and described light source.

2. according to the described reflecting mirror for electronic flash device of claim 1, it is characterized in that,

In described section is looked, using described central shaft to be the coordinate center with described light source, constitute by X-axis and the Y-axis mutually orthogonal at this coordinate center, and described reference field is configured under the situation of the coordinate system on the described X-axis, with described the 2nd reflecting surface, described tie point (B1, B2) point (C1 that intersects with described the 2nd reflecting surface and described Y-axis, C2) in respect to described reference field and the zone between the point of this tie point side, and serve as positive side and be that benchmark is spent with 180 with this zone and in the zone of an opposite side with the central shaft of described cylinder face with this zone

Wherein a side zone is formed by described reflecting part, and the opposing party's zone forms by described cylinder is facial.

3. according to the described reflecting mirror for electronic flash device of claim 2, it is characterized in that,

Described reflecting part, by in the cylinder face cylindraceous that the central shaft of described light source is obtained as the central shaft of radius-of-curvature, obtain, constituted with the central shaft of the axle beyond the central shaft of described light source with the facial different cylinder face cylindraceous of described cylinder by radius-of-curvature.

4. according to the described reflecting mirror for electronic flash device of claim 2, it is characterized in that,

During described section is looked, utilizing the described central shaft with described light source is the coordinate center, constitute by X-axis and the Y-axis mutually orthogonal at this coordinate center, and described reference field is configured under the situation of the coordinate system on the described X-axis, described tie point (the B1 of described the 2nd reflecting surface, B2) point (C1 that intersects with described the 2nd reflecting surface and described Y-axis, C2) in respect to described reference field and the zone between the point of this tie point side, by described reflecting part (74,75) form, described the 2nd reflecting surface, with this zone serve as positive side and with the central shaft of described cylinder face by benchmark and the zone of an opposite side is formed by cylindrical portion (43) with 180 degree with this zone

Described reflecting part possesses a plurality of planar portions.