JP2001133857A - Flashing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flashing device capable of being miniaturized and obtaining highly precise light distribution characteristics. SOLUTION: An optical member 12 arranged inside a reflector 40 is positioned with reference to a light source 20 by a positioning member 30. The positioning member 30 is provided with a light source abutting part abutting on the light source 20, an optical member abutting part abutting on the optical member 12, and a distance between the light source 20 and the optical member 12 is fixed by the positioning member 30 in an attaching/detaching direction X of the light source 20 and the optical member 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a flash device.

[0002]

2. Description of the Related Art Conventionally, there has been proposed a flash device capable of changing a light distribution by moving a reflector umbrella or an optical panel provided in front of the reflector umbrella. However, this type of device has a drawback in that it requires a moving space and has a large overall configuration.

For miniaturization, there has been proposed a flash device in which an optical member is arranged between a reflector and a panel to distribute light more efficiently. In this device, the optical member is fixed and positioned in a notch formed on the side surface of the reflector (for example, Japanese Patent Laid-Open No. 5-210149).

However, in general, the reflector is formed by press-molding an aluminum member, so that it is difficult to obtain the dimensional accuracy of the notch for positioning the optical member, and the mounting position of the optical member tends to vary. Since the optical member is located near the xenon tube, the positional accuracy has a large effect on the light distribution characteristics.Therefore, positioning the optical member with the notch of the reflector can provide high-precision light distribution characteristics. Was difficult.

[0005]

SUMMARY OF THE INVENTION Accordingly, a technical problem to be solved by the present invention is to provide a flash device which can be miniaturized and which can obtain a light distribution characteristic with high accuracy. .

[0006]

SUMMARY OF THE INVENTION The present invention provides a flash device having the following configuration to solve the above technical problems.

The flash device is of a type including a reflector, a light source disposed inside the reflector, and an optical member disposed between an opening of the reflector and the light source. The flash device includes a first positioning member. The first positioning member has a light source contact portion that contacts the light source and an optical member contact portion that contacts the optical member. The first positioning member keeps a constant distance between the light source and the optical member in a first direction in which the light source and the optical member come and go.

In the above configuration, for example, FIGS.
As shown in the configuration diagram of FIG. 3, the light source 2 is provided at the light source contact portion of the first positioning member 3, and the optical member 1 is provided at the optical member contact portion.
Are brought into contact with each other by bonding or urging. Thereby, the optical member 1 is positioned with respect to the light source 2 via the first positioning member 3. Since it is easy to ensure the component accuracy of the first positioning member 3, the light source 2
It is possible to easily increase the positioning accuracy of the optical member 1 with respect to.

Therefore, it is possible to reduce the size and obtain an accurate light distribution characteristic.

When the xenon tube is used as the light source, the positioning accuracy of the optical member with respect to the xenon tube can be easily increased as described above.

That is, the flash device includes a reflecting umbrella,
This is a type including a xenon tube disposed inside the reflector and an optical member disposed between the opening of the reflector and the xenon tube. The flash device includes a first positioning member. The first positioning member has a xenon tube contact portion that contacts the xenon tube, and an optical member contact portion that contacts the optical member.

Preferably, the first positioning member is
The optical member is integrally formed. For example, as shown in the configuration diagram of FIG. 14, the configuration can be simplified by forming the first positioning member 3 and the optical member 1 as one component. In addition, it is easy to ensure the positioning accuracy.

Preferably, the apparatus further comprises a second positioning member. The second positioning member is an optical member or the first member.
And a second-direction positioning portion positioned in a second direction orthogonal to the first direction. In this case, for example, FIGS.
6, by appropriately positioning the second direction positioning portion of the second positioning member 3B, the second direction orthogonal to the first direction in which the light source or the xenon tube 2 and the optical member 1 come into contact with or separate from each other. The direction can position the optical member. In the case where the second direction is the extending direction of the light source or the xenon tube, as shown in FIG. 15, for example, even if the notch 4A on the side surface of the reflector 4 is small, it is possible to easily assemble it and to increase the height. Reflection efficiency can be obtained.

[0014] More preferably, the second direction positioning portion of the second positioning member abuts on a reflector. For example, as shown in FIG. 16, the second direction positioning portion of the second positioning member 3 </ b> B is brought into contact with the reflector 4, and the second direction orthogonal to the first direction in which the light source or the xenon tube 2 and the optical member 1 come and go.
In the direction, the optical member 1 can be positioned with respect to the reflector 4 with high accuracy. In this case, it is easy to reduce the size of the entire apparatus by reducing the number of components arranged outside the reflector.

Further, the present invention provides a flash device having the following configuration.

The flash device is of a type including a reflector, a xenon tube disposed inside the reflector, and an optical member disposed between the opening of the reflector and the light source. The flash device includes a holder. The holder has a reflector holding portion and an optical member contact portion. The reflector holding portion is disposed outside the reflector along the light source, and holds the reflector between the reflector and the light source. The optical member contact portion contacts the optical member or a holding member that holds the optical member.

In the above configuration, the reflector is held between the reflector holding portion of the holder and the light source by bonding or urging. Since the dimensional accuracy of the reflector in the thickness direction is high and it is easy to secure the component accuracy of the holder, it is possible to position the light source on the holder with high accuracy via the reflector. On the other hand, the optical member or a holding member for holding the optical member is brought into contact with the optical member contact portion of the holder by bonding or urging. Since it is easy to ensure the precision of the components of the holder, it is possible to position the optical member on the holder with high precision. That is, the positioning accuracy of the optical member with respect to the light source can be easily increased via the holder.

Therefore, it is possible to reduce the size and obtain an accurate light distribution characteristic.

More specifically, as shown in the configuration diagram of FIG. 17, for example, the optical member 1 and the xenon tube 2 are urged in the opposite directions by the elastic member 9 so that the optical member 1 contacts the holder optical member contact portion. On the other hand, the reflector is held between the xenon tube 2 and the holder of the holder.

Further, the present invention provides a flash device having the following configuration.

The flash device is of a type including a reflector, a xenon tube disposed inside the reflector, and an optical member disposed between the opening of the reflector and the xenon tube. The optical member has an entrance surface facing the xenon tube, an exit surface facing the opening of the reflector, and an end surface extending between the entrance surface and the exit surface and inclined in a direction in which the light distribution spreads. Having. The end face is disposed inside the straight-forward radiation from the xenon tube passing near the outside of the incident face.

If the light emitted from the xenon tube is directly
When incident on the end face of the optical member, the light becomes harmful light that degrades the light distribution characteristics.However, according to the above configuration, straight-ahead radiation from the xenon tube, that is, radiation that travels straight from the center of the xenon tube, It does not enter the end face of the optical member. On the other hand, if the light incident on the optical member exits from the end face, it becomes harmful light that degrades the light distribution characteristics. However, according to the above configuration, the end face is inclined in the direction in which the light distribution spreads. Can be prevented from exiting from the end face. That is, it is possible to prevent harmful light that degrades the light distribution characteristics from being generated by the optical member.

Therefore, it is possible to reduce the size and obtain an accurate light distribution characteristic.

Further, the present invention provides a flash device having the following configuration.

The flash device is of a type including a reflector, a xenon tube disposed inside the reflector, and an optical member disposed between the opening of the reflector and the xenon tube. The reflecting umbrella has a first reflecting surface and a second reflecting surface. The first reflecting surface covers the periphery of the xenon tube in a semi-cylindrical shape on the side opposite to the opening of the reflector when viewed from a first direction in which the xenon tube and the optical member come and go.
The second reflecting surface extends from the first reflecting surface to the side of the opening of the reflector, and reflects the radiated light from the xenon tube toward the opening without entering the optical member.

If the radiated light from the xenon tube is reflected by the second reflecting surface of the optical member and enters the optical member, it becomes harmful light that degrades the light distribution characteristics. Light emitted from the tube is not reflected on the second reflecting surface and enters the optical member. Therefore, it is possible to prevent harmful light that degrades the light distribution characteristics from being generated by the optical member.

Therefore, it is possible to reduce the size and obtain an accurate light distribution characteristic.

Specifically, the optical member is disposed along the xenon tube, and is disposed inside the first reflecting surface of the reflector when viewed from the first direction.

In the above configuration, of the light emitted from the xenon tube, the light not incident on the optical member is reflected by the second reflecting surface of the reflector or goes straight as it is, so that the opening of the reflector is opened. From the part to the subject side. In general,
The second reflecting surface of the reflecting umbrella emits light from the xenon tube,
Since the light is reflected in parallel or outward in the first direction in which the xenon tube and the optical member come and go, the light reflected by the second reflecting surface of the reflector does not enter the optical member.

Preferably, an optical panel is provided at the opening of the reflector or outside the opening.

According to the above configuration, the reflector is covered so that the inside of the reflector is not exposed. By disposing the optical panel at a position far away from the xenon tube, light from the xenon tube can be efficiently distributed.

More preferably, the optical member has a positive power, and the optical panel has a negative power.

According to the above configuration, while the irradiation area is widened by the optical panel, the light distribution can be made such that the illuminance of one part of the irradiation area is higher than that of the other part by condensing the optical member.

Further, the present invention provides the following flash device.

The flash device is of a type including a reflector, a light source disposed inside the reflector, and an optical member disposed between the light source and the opening of the reflector. The flash device includes a driving unit that moves the optical member with respect to the light source.

For example, as shown in the configuration diagram of FIG. 18, by moving the optical member 1 with respect to the light source 2, the light distribution characteristics can be appropriately changed according to the subject, which is convenient.

Therefore, it is possible to reduce the size and obtain a light distribution characteristic with high accuracy.

Further, the present invention provides the following flash device.

The flash unit is of a type including a reflector, a xenon tube disposed inside the reflector, and an optical member disposed between the opening of the reflector and the xenon tube. The flash device includes an optical member holding member and a driving unit. The optical member holding member has an optical member holding portion that holds the optical member, and a xenon tube contact portion that movably contacts the xenon tube. The driving means includes:
The optical member holding member is moved.

In this flash device, the position of the optical member holding member with respect to the xenon tube is configured to change with reference to the xenon tube. The driving means moves the optical member holding member with the xenon tube as a reference (fulcrum). For example,
As shown in the configuration diagram of FIG. 19, the xenon tube contact portion of the optical member holding member 6 is configured to rotate around the xenon tube 2 while contacting the xenon tube 2. Alternatively, as shown in the configuration diagram of FIG. 20, the xenon tube contact portion of the optical member holding member 7 is configured to move parallel to the xenon tube 2 while contacting the xenon tube 2. In addition, the optical member 1 may be configured to rotate around the xenon tube 2.

According to the above configuration, by controlling the position of the optical member holding member with respect to the light source and moving the optical member with respect to the xenon tube, the light distribution characteristics can be appropriately changed according to the subject, which is convenient. It is. Further, since it is easy to secure the component accuracy of the optical member holding member, it is easy to control the position of the optical member holding member with high accuracy and to control the light distribution characteristics with high accuracy.

Therefore, it is possible to reduce the size and obtain a light distribution characteristic with high accuracy.

Preferably, the driving means moves the optical member holding member based on photographing information of a camera.

According to the above configuration, the irradiation angle can be changed by moving the optical member holding member based on the photographing information of the camera, so that the light distribution characteristics suitable for the subject can be obtained.

[0045]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a flash device according to each embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the flash device of the first embodiment generally includes a xenon tube 20, a reflector 40,
It has a panel 10, a lens 12, and a pair of lens positioning members 30.

The reflecting umbrella 40 is formed by press-molding an aluminum member, and has a semi-cylindrical wall portion 40a extending in a semi-cylindrical shape along the outer peripheral surface of the xenon tube 20, and a substantially parabolic shape from the semi-cylindrical wall portion 40a. A pair of curved wall portions 40b extending on both sides of the optical axis X, a semi-cylindrical wall portion 40a and a curved wall portion 4;
0b and a pair of end wall portions 40c extending substantially at right angles. A notch 40 s is formed in the end wall portion 40 c so that the lens positioning member 30 can be inserted therethrough.

The panel 10 includes a main lens portion 10a and a Fresnel lens portion 10b, and is disposed at an opening of the reflector 40.

The lens 12 is disposed inside the reflector 40, and projections are formed at both ends of the lens 12 so as to engage with the notches 30 a of the lens positioning member 30. The pair of lens positioning members 30 are disposed so as to face in parallel with the axial direction of the xenon tube 20, and support both ends of the lens 12. The lens positioning member 30 has a cylindrical contact surface that comes into contact with the outer peripheral surface of the xenon tube 20, and is attached while being pressed against the end of the xenon tube 20 by a ring-shaped rubber band G or the like.

Since the lens positioning member 30 is accurately processed into a shape having a predetermined size, the lens 12 is positioned via the positioning member 30 at a position separated from the xenon tube 20 by a predetermined distance without tilting. Thereby, the accuracy of the relative position between the lens 12 and the xenon tube 20 can be ensured.

Each lens positioning member 30
The corner 30 b of the reflector abuts on the curved wall 40 b of the reflector 40. Thereby, the accuracy of the relative position of the lens 12, the xenon tube 20, and the reflector 40 can be ensured.

Next, the structure of the lens 12 will be further described.

As shown in the enlarged view of the main part of FIG.
2 are provided on both sides of the optical axis X at angles α with respect to the optical axis X, respectively.
It has an inclined end surface 12a. When light from the xenon tube 20 is incident on the end surface 12a of the lens 12, the light is not refracted or reflected in a desired direction and becomes harmful light. Therefore, the lens 12 is configured so that α <θ (1). Light from the light source 20 is prevented from being incident on the end face 12 a of the lens 12. Here, the angle θ is an angle formed by a straight line connecting the xenon tube side end point K of the end surface 12a of the lens 12 and the xenon tube center O to the optical axis X.

As shown in FIG. 5, the height of the lens 12 in the direction perpendicular to the optical axis is H, and the semi-cylindrical wall portion 40a of the reflector 40 is
If the diameter of the inner surface (reflection surface) of D is D, then H <D (2).

If the light L1 and L2 emitted from the xenon tube 20 to the radiation surface of the curved wall 40b of the reflector 40 and reflected parallel (or outward) to the optical axis X enter the lens 12,
Although it is not refracted or reflected in a desired direction and becomes harmful light, if it is configured so as to satisfy Expression (2), the reflected light L1, which is emitted from the xenon tube 20 to the curved wall portion 40b of the reflector 40, will be described.
L2 can be prevented from entering the lens 12.

FIG. 10 is a block diagram of a camera using the flash device having the above configuration.

CPU 100 for controlling the entire camera
, A photographing lens 200, a finder 120, a photometric unit 130, a distance measuring unit 140, and a flash device 150 are connected. As shown in FIG. 11, the distance measuring section 140 includes an area sensor 142 having two light receiving sections 142a and 142b. The distance measuring unit 140 can also be used for photometry.

The CPU 100 includes a distance measurement information calculation unit 102
, A photometric information calculation unit 104, an image processing unit 106, a flash device control unit 108, a photographing lens control unit 110
, A display control unit 112, and a storage unit 112.

As shown in the cross-sectional view of FIG. 2, the flash device of the second embodiment is generally arranged around the xenon tube 20 and the xenon tube 20 and has a reflective surface, similarly to the first embodiment. A reflector, a panel 10 disposed at an opening of the reflector 42, a lens 14 disposed inside the reflector 42, a lens support member 32 for supporting the lens 14, and an outer side of the reflector 42. And a holder 50 to be arranged.

The xenon tube 20 and the panel 10 are configured in the same manner as in the first embodiment.

The reflector 42 is substantially similar to the first embodiment,
Semi-cylindrical wall portion 42a, curved wall portion 42b, and end wall portion 42c
In the end wall portion 42c, a notch 42s through which the lens support member 32 is inserted is formed.

The lens 14 is different from the first embodiment.
It has a projection 14a projecting radially from both ends. The projection 14a has a cylindrical contact surface 14b that contacts the outer peripheral surface of the xenon tube 20. Xenon tube 20
Since the outer diameter of the glass tube is unstable near the electrode terminals at both ends thereof and varies greatly, the projection 14a of the lens 14 is slightly away from such a portion and has a stable outer diameter at xenon. It comes into contact with the outer peripheral surface of the tube 20.

A pair of lens support members 32 are fitted at both ends of the lens 14 to support the lens 14. In the lens support member 32, a portion that penetrates the notch 42 s of the reflector 42 and protrudes to the outside is positioned by the holder 50.

The holder 50 is provided with the semi-cylindrical wall 42 of the reflector 42.
a, a pair of support protrusions 50b protruding from both ends of the main body 50a along the curved wall portion 42b of the reflector 42, and a reflector from each support protrusion 50b. The pair of positioning projections 50c protruded along the end wall 42c of the projection 42. The lens support member 32 is sandwiched between each pair of the positioning projections 50c.

Each lens support member 32 has a ring-shaped rubber band G extending along the main body 50a of the holder 50.
Is inserted and hooked. When the rubber band G is attached, the lens support member 32 and the main body 50a of the holder 50 are urged in directions approaching each other by the elastic force of the rubber band G. Thereby, the contact surface 14b of the projection 14a of the lens 14 contacts the outer peripheral surface of the xenon tube 20, and the relative position (distance and inclination) between the lens 14 and the xenon tube 20 is
Maintained with high precision.

The xenon tube 20 urges the semi-cylindrical portion 42a of the reflector 42 toward the main body 50a of the holder 50, and holds the semi-cylindrical portion 42a of the reflector 42 between itself and the main body 50a of the holder 50. I do. Since the dimensional error of the thickness of the semi-cylindrical portion 42a of the reflector 42 is small, the reflector 40 is
0, and thus the relative position with respect to the lens 14 is held with high precision.

Further, the curved wall portion 42b of the reflecting umbrella 42
The curved wall portion 42b of the reflector 40 is held in a fixed shape with high precision because it comes into contact with the corner of the support protrusion 50b of the holder 50.

As shown in FIG. 3, the flash device according to the third embodiment generally includes a reflector 44, a panel 10 disposed at an opening of the reflector 44, and a lens disposed inside the reflector 44. 16, a lens support member 34 for supporting the lens 16, and a holder 52 disposed outside the reflector 44.

The xenon tube 20 and the panel 10 are configured in the same manner as in the first embodiment.

The reflecting umbrella 44 has substantially the same configuration as that of the first embodiment, and includes a semi-cylindrical wall portion 44a, a curved wall portion 44b, and an end wall portion 44c. The end wall portion 44c has a lens support member. A notch 44 s into which 34 is inserted is formed.

As in the second embodiment, the lens 16 is supported by lens support members 34 fitted at both ends.

The holder 52 is substantially the same as the second embodiment,
It comprises a main body 52a, two pairs of support projections 52b, and two pairs of positioning projections 52c. However, unlike the second embodiment, a groove is formed in the positioning protruding piece 52c in a stepped manner, and the lens support member 34 is sandwiched between the grooves.

At both ends of the xenon tube 20, donut-shaped rubber rings 54 are attached. This rubber ring 54
Urges the lens support member 34 away from the xenon tube 20 by the elastic repulsion. Thus, the lens support member 34 comes into contact with the step surface 52x at the groove end of the positioning projection 52c of the holder 52. Further, by this contact, the holder 52 is also urged, and the main body 52a of the holder 52 is
Presses the semi-cylindrical wall portion 44a of the reflector umbrella 44 against the xenon tube 20, and the semi-cylindrical wall portion 44a of the reflector umbrella 44
2 between the main body 52a and the xenon tube 20.

Thus, the lens 16, the reflector 40,
The relative positions of the xenon tubes 20 are maintained with high accuracy.

Further, the curved wall 44b of the reflector 44 is
The curved wall 44b of the reflector 44 is held in a fixed shape with high precision because it comes into contact with the corner of the support projection 52b of the holder 52.

Next, a fourth embodiment will be described.

In the fourth embodiment, as shown in FIGS. 18 to 20, the lens 1 disposed inside the reflector is moved within the reflector 4, thereby changing the flash light distribution characteristics. It is configured to be able to.

In this case, for example, as shown in FIGS. 6 and 7, when the position of the lens L is moved in the optical axis direction, the light distribution angle can be changed. In the figure, R indicates a reflector and P indicates a panel. As shown in FIG.
Approaching the xenon tube S, the light flux incident on the lens L increases, and the light distribution angle decreases. Conversely, as shown in FIG.
When the lens L is moved away from the xenon tube S side, the light flux incident on the lens L decreases, and the light distribution angle increases.

The movement of the lens L is not limited to the above-described parallel movement in the optical axis direction. For example, when compared with the case of the normal position shown in FIG. 8A, the xenon tube S as shown in FIG.
When the lens L is rotated around the center, the light distribution on the side to which the lens L is moved (the lower side in the figure) increases and the light becomes brighter. Also, as shown in FIG. 8 (c), even when the lens is moved in parallel in the direction perpendicular to the optical axis, the light distribution on the side where the lens L is moved (the lower side in the figure) increases, and the light becomes brighter.

As described above, since the light distribution characteristics change depending on the position of the lens L, when the lens is fixed in the reflector as in the first to third embodiments, the lens in the reflector is higher. It is necessary to position with accuracy.

The change in the light distribution angle due to the movement of the lens can be used for the light distribution according to the subject. For example, when there is little need to illuminate the background such as a night view, the light distribution is set according to the subject.

FIG. 3 shows an example in which a night scene is photographed in a vertical position. As shown in FIGS. 9A and 9B, when one subject T is deviated rightward or leftward, the lens L is brought closer to the xenon tube S to reduce the light distribution angle, and the arrow is used. As shown by or, the lens L is moved according to the position of the subject T, and the light distribution is focused on the subject T. As shown in FIG. 9C, when the two subjects T are on the right and left sides, as shown by arrows, the lens L is moved away from the xenon tube S to increase the light distribution angle, and both subjects T Light distribution toward.

The flash is usually installed above the photographing lens, and at the time of close-up photographing, the optical axis of the photographing lens and
Parallax of the flash irradiation optical axis occurs. At this time, by moving the lens L such that the irradiation optical axis is directed to the center of the subject in accordance with a signal from the distance measuring unit, good light distribution is possible.

The flash device of each of the embodiments described above can position the lens in the reflector with high accuracy. Therefore, miniaturization is possible and accurate light distribution characteristics can be obtained.

The present invention is not limited to the above embodiment, but can be implemented in various other modes.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a flash device according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a flash device according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a flash device according to a third embodiment of the present invention.

FIG. 4 is an explanatory diagram of a configuration of a lens.

FIG. 5 is an explanatory diagram of a configuration of a lens.

FIG. 6 is an explanatory diagram of light distribution when a lens approaches a xenon tube.

FIG. 7 is an explanatory diagram of light distribution when a lens is separated from a xenon tube.

FIG. 8 is an explanatory diagram of a change in light distribution due to movement of a lens.

FIG. 9 is an explanatory diagram of photographing conditions and light distribution.

FIG. 10 is a block diagram of a camera using a flash device.

11 is a perspective view of a sensor used in the distance measuring unit of FIG.

FIG. 12 is an explanatory diagram of a configuration of a flash device.

FIG. 13 is an explanatory diagram of a configuration of a flash device.

FIG. 14 is an explanatory diagram of a configuration of a flash device.

FIG. 15 is an explanatory diagram of a configuration of a flash device.

FIG. 16 is an explanatory diagram of a configuration of a flash device.

FIG. 17 is an explanatory diagram of a configuration of a flash device.

FIG. 18 is an explanatory diagram of a configuration of a flash device.

FIG. 19 is an explanatory diagram of a configuration of a flash device.

FIG. 20 is an explanatory diagram of a configuration of a flash device.

[Explanation of symbols]

 Reference Signs List 1 optical member 2 light source, xenon tube 3 first positioning member 3A first positioning member 3B second positioning member 4 reflector 5 opening 6,7 optical member holding member 8 holder 9 elastic member 10 panel 10a main lens portion 10b Fresnel lens portion 12 lens 12a end face 14 lens 14a protrusion 14b abutment surface 16 lens 20 xenon tube 30 lens positioning member 30a cutout portion 30b angle 32,34 lens support member 40,42,44 reflective umbrella 40a, 42a, 44a Semi-cylindrical wall portions 40b, 42b, 44b Curved wall portions 40c, 42c, 44c End wall portions 40s, 42s, 44s Notches 50, 52 Holders 50a, 52a Main body portions 50b, 52b Supporting projections 50c, 52c Positioning projections 52x step Surface 54 rubber ring

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G03B 15/05

Claims (14)

[Claims] 1. A flash device comprising a reflector, a light source disposed inside the reflector, and an optical member disposed between an opening of the reflector and the light source, wherein the light source contacts the light source. A first portion having a contact portion and an optical member contact portion contacting the optical member, wherein the light source and the optical member contact and separate from each other;
A flash device comprising: a first positioning member that keeps a distance between a light source and an optical member constant in a direction. 2. A flash device comprising: a reflector, a xenon tube disposed inside the reflector, and an optical member disposed between the opening of the reflector and the xenon tube. A flash device comprising: a first positioning member having a xenon tube contact portion in contact with an optical member contact portion in contact with an optical member. 3. A flash device comprising a reflector, a xenon tube disposed inside the reflector, and an optical member disposed between an opening of the reflector and a light source. A holder arranged along the light source and having a reflector holding portion for holding the reflector between the light source and an optical member or an optical member abutting portion abutting on a holding member holding the optical member. Characterized by the flash device. 4. The flash device according to claim 1, wherein the first positioning member is formed integrally with the optical member. 5. A second member having an optical member-side contact portion that contacts the optical member or the first positioning member, and a second direction positioning portion that is positioned in a second direction orthogonal to the first direction. The flash device according to claim 1, further comprising a positioning member. 6. The flash device according to claim 5, wherein the second direction positioning portion of the second positioning member contacts a reflector. 7. A flash device comprising a reflector, a xenon tube disposed inside the reflector, and an optical member disposed between the opening of the reflector and the xenon tube, wherein the optical member is An entrance surface facing the xenon tube, an exit surface facing the opening of the reflector, and an end surface extending between the entrance surface and the exit surface and inclined in a direction in which the light distribution spreads, The end face is disposed on the inner side than the straight-forward radiation from the xenon tube passing near the outside of the incident surface.
Flash device. 8. A flash device comprising a reflector, a xenon tube disposed inside the reflector, and an optical member disposed between an opening of the reflector and the xenon tube, wherein the reflector is A first reflecting surface that covers the periphery of the xenon tube in a semi-cylindrical shape on the side opposite to the opening of the reflector when viewed from a first direction in which the xenon tube and the optical member come and go; A second reflecting surface extending from the first reflecting surface to the opening side of the reflector and reflecting the radiated light from the xenon tube toward the opening without entering the optical member. Flash device. 9. The optical member is disposed along a xenon tube, and when viewed from the first direction, a first member of the reflector.
The flash device according to claim 8, wherein the flash device is disposed inside a reflection surface of the flash device. 10. The flash device according to claim 7, wherein an optical panel is provided at an opening of the reflector or outside the opening. 11. The optical member has a positive power, and the optical panel has a negative power.
The flash device according to claim 10. 12. A flash device comprising: a reflector, a light source disposed inside the reflector, and an optical member disposed between an opening of the reflector and the light source, wherein the optical member is disposed with respect to the light source. A flash device comprising a driving means for moving the flash device. 13. A flash device comprising: a reflector, a xenon tube disposed inside the reflector, and an optical member disposed between an opening of the reflector and the xenon tube. An optical member holding portion, a xenon tube contact portion movably in contact with the xenon tube, an optical member holding member, and a driving unit for moving the optical member holding member. Flash device. 14. The flash device according to claim 12, wherein the driving unit moves the optical member holding member based on photographing information of a camera.