JP2011242663A - Spectroscopy adaptor for stroboscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spectroscopy adaptor for stroboscope which disperses a part of strobe light as diffusion light and irradiates a beam of spot light in a different direction.SOLUTION: The spectroscopy adaptor comprises a ring-like attachment part 10 of resin detachably fitted to a light emitting head S2 of a stroboscope S; and a concave mirror 20 supported by the attachment part 10 being interposed by a supporting member 30 in a state being inclined to extend toward a light emitting face of the light emitting head S2 of the stroboscope S. The spectroscopy adaptor is attached to a stroboscope S the light emitting head S2 of which is rotatably supported by a main body S1 detachably attached to a camera C.

Description

  The present invention relates to a spectroscopic adapter for a strobe attached to a strobe that is detachably attached to a camera.

  Conventionally, in order to give a natural feeling, bounce shooting has been performed in which the subject is not exposed to direct strobe light, but is directed toward the ceiling, but there is no light from the front. Since the light alone becomes a top light, when the subject is a person or an animal, there is a problem that the face becomes dark or the brightness of the eyes disappears.

  Therefore, in order to solve these problems, when performing bounce photography, as shown in FIG. 11, a reflector that irradiates the subject with a part of the light emitted from the strobe emitted toward the ceiling. The bouncer 51 is built in the strobe 50 or attached to the strobe 50 separately.

Japanese Patent Laid-Open No. 08-087056

  By the way, when the bouncer 51 as described above is used, it is possible to divide a part of the strobe light that is the diffused light and irradiate it in different directions, but the light reflected by the bouncer 51 is a diffused light. Instead of irradiating the subject with uniform light, aiming for a special effect by irradiating the subject with diffused light and irradiating the subject with a spot light on the wall behind the subject or the floor in front of the subject. If you want to take an image, such a bouncer is not useful, and in addition to the strobe that emits diffused light, you have to prepare a separate light source that can emit spot light.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a strobe spectral adapter that can split a part of strobe light that is diffused light and irradiate spot light in different directions.

  In order to solve the above problems, the invention according to claim 1 is a spectral adapter for a strobe attached to a strobe in which a light emitting head part is rotatably supported on a main body part detachably attached to a camera. A mounting portion that is detachably mounted on the light emitting head portion of the strobe, and a concave mirror that is supported by the mounting portion in an inclined state so as to project toward the light emitting surface side of the light emitting head portion of the strobe. Provided is a spectroscopic adapter for a strobe that is provided.

  According to a second aspect of the present invention, in the strobe spectroscopic adapter according to the first aspect of the present invention, the concave mirror has an inclination angle of 50 to 80 degrees with respect to the light emitting surface of the light emitting head. Yes.

  According to a third aspect of the present invention, in the strobe spectroscopic adapter according to the first aspect of the invention, the concave mirror is supported by the mounting portion so that an inclination angle with respect to the light emitting surface of the light emitting head can be changed.

  As described above, the spectroscopic adapter for a strobe according to the first aspect of the present invention is tilted so as to project toward the light emitting surface side of the light emitting head portion of the strobe and the mounting portion that is detachably attached to the light emitting head portion of the strobe. In this state, it is equipped with a concave mirror supported by the mounting part, so when it is mounted on the strobe light emitting head, part of the strobe light, which is diffused light, is reflected by the concave mirror and irradiated as a spot light in different directions. The

  Therefore, for example, if you want to irradiate the subject with diffused light and irradiate the subject with spot light on the wall surface behind the subject, bounce the strobe light toward the ceiling. By performing photographing, it is possible to irradiate a wall or the like behind the subject as spot light with a part of strobe light reflected by the concave mirror while irradiating the subject with diffused light as a top light.

  In addition, if you want to irradiate the subject with spot light on the floor in front of the subject while irradiating the subject with a diffused light, irradiate the subject directly with strobe light, irradiating the subject with diffused light as a catchlight, It is possible to irradiate a part of the strobe light reflected by the light onto the floor surface in front of the subject as spot light.

  Further, in the strobe spectroscopic adapter according to the second aspect of the invention, since the inclination angle of the concave mirror with respect to the light emitting surface of the light emitting head of the strobe is set to 50 to 80 degrees, the spot light can be most effectively dispersed. it can.

  Further, the strobe spectroscopic adapter of the invention according to claim 3 can change the inclination angle of the concave mirror with respect to the light emitting surface of the light emitting head of the strobe, so that the branching ratio of the spot light to the diffused light can be arbitrarily set with a certain degree of freedom This has the effect of increasing variations in the finish.

It is a perspective view which shows one Embodiment of the spectral adapter for strobes concerning this invention. (A) is a plan view showing the same strobe spectral adapter, (b) is a front view showing the same strobe spectral adapter, (c) is a rear view showing the same strobe spectral adapter, and (d) is the same as above. The bottom view which shows the spectral adapter for electronic flashes, (e) is a right view which shows the spectral adapter for electronic flashes same as the above. (A) is a side view showing a state before the above-mentioned strobe spectral adapter is attached to a strobe attached to the camera, and (b) is a side view showing the attached state. It is a figure which shows the irradiation state of strobe light when using the spectral adapter for strobes same as the above. It is a figure which shows the irradiation state of strobe light when using the spectral adapter for strobes same as the above. (A) is a front view which shows the spectral adapter for strobes which is other embodiment, (b) is a right view which shows the spectral adapter for strobes same as the above. FIG. 7 is a partial cross-sectional view taken along line XX in FIG. It is a partial expanded side view which shows the concave mirror positioning mechanism in the spectroscopy adapter for flashes same as the above. (A) is a partial side view showing a state in which the concave mirror in the above strobe spectral adapter is positioned at the most forward tilted position, and (b) is a position at which the concave mirror in the above strobe spectral adapter is most tilted back. It is a partial side view which shows the state made. (A) is a right side view showing a state in which the concave mirror in the above strobe spectral adapter is folded back, and (b) is a rear view showing a state in which the concave mirror in the above strobe spectral adapter is folded back. . It is a figure which shows the irradiation state of strobe light when the conventional bouncer is used.

  Hereinafter, embodiments will be described with reference to the drawings. As shown in FIGS. 1 to 3, the strobe spectral adapter 1 is attached to a strobe S in which a light emitting head portion S <b> 2 is rotatably supported on a main body portion S <b> 1 that is detachably attached to a camera C. There is a mounting portion 10 that is an annular resin molded product that is detachably fitted to the light emitting head portion S2 of the strobe S, and is inclined so as to project toward the light emitting surface side of the light emitting head portion S2 of the strobe S. Thus, the concave portion 20 is supported by the mounting portion 10 via the support member 30.

  The mounting portion 10 is formed so that the opening area on the upper end side is slightly smaller than the opening area on the lower end side, and the light emitting head portion of the strobe S as shown in FIGS. Depending on the type of strobe S, the light emitting surface of the light emitting head portion S2 is flush with or slightly protruding from the upper end surface of the mounting portion 10 when it is externally fitted to S2. Its inside dimension is set.

  The support portion 30 is connected to the back side of the mounting portion 10, and the lower end portion of the concave mirror 20 is embedded in the support portion 30, so that the concave mirror 20 is supported by the support portion 30 at a predetermined inclination angle. Yes.

  The concave mirror 20 has a diameter of 79 mm, a radius of curvature of 80 mm, and a front circular shape having substantially the same diameter as the width of the mounting portion 10. As shown in FIG. The inclination angle is set so that the angle θ formed with the upper end surface of 10 is 50 to 80 degrees.

  When the strobe spectral adapter 1 configured as described above is attached to the light emitting head portion S2 of the strobe S attached to the camera C, the concave mirror 20 becomes the light emitting head portion of the strobe S as shown in FIG. A state of projecting to the light emitting surface side in S2 is achieved, and a part of the strobe light that is the diffused light is reflected by the concave mirror 20 and irradiated as a spot light in different directions.

  Therefore, for example, as shown in FIG. 4, when bounce shooting is performed with the light emitting surface of the light emitting head portion S2 of the strobe S facing upward, the strobe light, which is diffused light, is irradiated on the ceiling surface and diffused. The light dl is irradiated on the subject from above, and a part of the strobe light that is the diffused light is reflected by the concave mirror 20, and is irradiated on the wall surface or the like behind the subject as the spot light sl. As shown in FIG. 5, when bounce shooting is performed with the light emitting surface of the light emitting head portion S2 of the strobe S facing diagonally upward, the strobe light, which is diffused light, is applied to the ceiling surface, and the diffused light dl is directed upward. Since a part of the strobe light, which is diffused light, is reflected by the concave mirror 20 and is irradiated to the part of the subject and the floor as the spot light sl. There unlike the case of uniformly irradiating light to the subject as in the conventional bounce flash with bouncer that the diffused light can be photographed image photo targeting special effects. 4 and 5, the case where ceiling bounce shooting is performed using the strobe spectral adapter 1 has been described, but horizontal wall bounce shooting is performed in which the strobe light is directed sideways to irradiate the side wall with strobe light. In this case, it is needless to say that by using the strobe spectral adapter 1, it is possible to shoot an image photograph aiming at a special effect, similar to ceiling bounce shooting.

  Further, when normal shooting is performed with the light emitting surface of the light emitting head portion S2 of the strobe S facing the front subject, the strobe light that is the diffused light is directly irradiated to the subject and the strobe light that is the diffused light is irradiated. A part of the light is reflected by the concave mirror 20 and is irradiated as a spot light on the floor surface in front of the subject, so that it is possible to take an image photograph different from the case of the bounce photographing described above.

  Also, when performing macro photography (close-up photography), since the subject is close to the camera, it is not possible to irradiate the subject directly with strobe light. By using a bouncer, reflected light (diffuse light) from the bouncer is used. If the strobe spectral adapter 1 is used in place of such a bouncer, the spot light reflected by the concave mirror 20 can be irradiated onto the subject, so a conventional bouncer is used. Compared to the case, there is an effect that the amount of light applied to the subject can be increased.

  6 to 10 show other embodiments. The strobe spectroscopic adapter 1 is fixed at a predetermined angle within the range of 50 to 80 degrees of the concave mirror 20, but the strobe spectroscopic adapter 2 has the tilt angle of the concave mirror 20 within a predetermined range. Can be changed in stages.

  As shown in the figure, the strobe spectroscopic adapter 2 also basically has the same configuration as the strobe spectroscopic adapter 1 described above. Description of the support member 30A, which is a different component, is omitted in detail.

  The support member 30 </ b> A supports a pair of left and right support bases 31 connected to both sides on the back side of the mounting portion 10 and a concave mirror 20 fixed to the upper end surface of the support base 31 so as to be rotatable. The support unit 32 has a positioning function that can change the inclination angle of the concave mirror 20 stepwise within a predetermined range.

  The support unit 32 includes a columnar support portion 33 that supports the lower end portion of the concave mirror 20, and a rotation shaft 34 embedded in the center of the support portion 33 so that both end portions protrude from both end portions of the support portion 33. And left and right support blocks 35 and 36 that rotatably support the rotation shaft 34 protruding from both ends of the support portion 33, and a plurality of outer peripheral surfaces fixed to one end of the rotation shaft 34. A locking plate 37 is provided with an appropriate locking claw 37a. The left and right support blocks 35 and 36 are fixed to a pair of left and right support bases 31 and 31, respectively.

  One support block 35 includes a main body portion 35A in which a circular concave portion 35a that accommodates a disk 37 fixed to one end portion of the rotating shaft 34 is formed, and a lid plate that closes the circular concave portion 35a of the main body portion 35A. 35B, so that the disk 37 can rotate in the circular recess 35a.

  A hole 35 b is formed in the inner peripheral surface of the circular recess 35 a in the main body portion 35 A of the support block 35, and a locking pin 38 that engages between the locking claws 37 a of the disk 37 and the hole 35 b. A coil spring 39 that urges the locking pin 38 toward the center of the disk 37 is accommodated. Therefore, when the concave mirror 20 is moved in the rotation direction, the locking claw 37a of the disk 37 presses the locking pin 38, the coil spring 39 is compressed, and the locking pin 38 moves backward. The engagement of the locking pin 38 with the claw 37a is released and the concave mirror 20 can be rotated. When the rotation is stopped, the locking pin urged toward the center of the disk 37 by the coil spring 39 is stopped. Since 38 engages between the locking claws 37a, the concave mirror 20 is positioned in that posture.

  However, the locking claws 37a are not formed at regular intervals over the entire circumference of the disk 37, and as shown in FIG. 9A, an inclination angle (a plane passing through the outer peripheral edge of the concave mirror 20 and the mounting portion 10). Are formed at regular intervals in a region corresponding to an inclination angle θ2 of up to 110 degrees as shown in FIG. 5B. As shown in FIGS. 10 (a) and 10 (b), the concave mirror 20 can be positioned in the retracted position completely tilted to the back side of the mounting portion 10. A pair of locking claws 37a and 37a are formed at the positions to be operated. Therefore, the concave mirror 20 cannot be positioned between the inclination angle θ2 of the concave mirror 20 and the storage position.

  The strobe spectroscopic adapter 2 configured as described above can change the inclination angle of the concave mirror 20 with respect to the light emitting surface of the strobe S stepwise within a predetermined range. The branching ratio can be arbitrarily set with a certain degree of freedom, which has the effect of increasing variations in finish.

  In addition, since the strobe spectroscopic adapter 2 can be positioned at the storage position where the concave mirror 20 is completely tilted to the back side of the mounting portion 10, the strobe spectroscopic adapter 2 is mounted on the strobe S. However, it is possible to perform normal photographing without using the spectral function, and it is easy to use.

  Further, when the concave mirror 20 is positioned at the storage position, the strobe spectral adapter 2 itself is not bulky, so that it is convenient to carry, and the storage space at home is also small, so that the handling property is good.

  The strobe spectroscopic adapter 2 allows the inclination angle of the concave mirror 20 to be changed stepwise within a range that is expected to be used, but is not limited thereto. Needless to say, the concave mirror 20 may be positioned stepwise within the entire range in which the concave mirror 20 is rotatable.

  In addition, the strobe spectral adapter 2 includes a disk 37 having a plurality of locking claws 37 a attached to the rotating shaft 34, and a locking pin 38 that engages between the locking claws 37 a of the disk 37. Although the positioning mechanism is employed, the present invention is not limited to this, and it goes without saying that various positioning mechanisms can be employed.

  In the strobe spectroscopic adapter 2, the concave mirror 20 is positioned stepwise. However, the present invention is not limited to this. For example, the rotating shaft to which the concave mirror 20 is fixed has a certain thickness. In addition, the concave mirror 20 can be positioned in an arbitrary posture by increasing the frictional resistance of the rotating shaft with respect to the bearing member that rotatably supports the rotating shaft.

  The maximum diameter of the concave mirror 20 may be set as appropriate, but is preferably set to about 130 to 80% of the lateral width of the strobe light emitting surface. This is because if the maximum diameter of the concave mirror 20 exceeds 130% of the width of the strobe light emitting surface, it becomes bulky and the portability becomes poor. If the maximum diameter of the concave mirror 20 is less than 80% of the width of the strobe light emitting surface, sufficient. This is because the spectral effect cannot be obtained.

  Moreover, in each embodiment mentioned above, although the cyclic | annular mounting | wearing part 10 detachably fitted to the light emission head part S2 of strobe S is employ | adopted, it is not limited to this, For example, of strobe S It is also possible to employ a band-shaped mounting portion that is wound around and fixed to the peripheral surface of the light emitting head portion S2.

  The spectral adapter for strobes of the present invention can be used when performing strobe photography.

1, 2 Strobe spectral adapter 10 Mounting part 20 Concave mirror 30, 30A Support member 31 Support base 32 Support unit 33 Support part 34 Rotating shaft 35, 36 Support block 35A Body part 35B Cover plate 35a Circular recess 35b Hole 37 Disc 37a Claw 38 Locking pin 39 Coil spring C Camera S Strobe S1 Main body S2 Light emitting head

Claims (3)

A strobe spectroscopic adapter attached to a strobe in which a light emitting head part is rotatably supported on a main body part detachably attached to a camera,
A mounting portion detachably mounted on the light emitting head portion of the strobe;
A strobe spectroscopic adapter comprising: a concave mirror supported by the mounting portion in an inclined state so as to project toward a light emitting surface side of the light emitting head portion of the strobe.   The strobe spectroscopic adapter according to claim 1, wherein the concave mirror has an inclination angle of 50 to 80 degrees with respect to a light emitting surface of the light emitting head.   The strobe spectroscopic adapter according to claim 1, wherein the concave mirror is supported by the mounting portion so that an inclination angle of the light emitting head with respect to a light emitting surface can be changed.

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