JPH0677404B2 - Optical device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lighting device for use when, for example, shooting video or making a movie in a studio.

INDUSTRIAL APPLICABILITY The present invention is a device that can adjust the angle of the illumination light, the position to illuminate and the width of the illuminated light very easily, and allows the photographed person to comfortably photograph without receiving heat from the illumination. is there.

FIG. 1 and FIG. 2 show an embodiment of the present invention. A light source lamp 1, a first mirror 2 which is a dichroic parabolic mirror which is provided in the center of the light source, and which collects light, and the light of the lamp 1 are shown. The light is reflected on the axis and emitted in the direction of the illuminated object 3
Then, the second mirror 4 is inserted into the case 5.

The mirror 4 is also a dichroic mirror, one side 6 is a plane mirror and the other side 7 is a double-sided mirror with a concave mirror.
The lamp 1 is pivoted about the axis 8 so that both sides of the lamp 1 reflect the light in the direction of the radiated light 3 with respect to the optical axis of the lamp 1 and are locked every 180 degrees. In this example, the light incident angle is 45 degrees with respect to the optical axis 9 of the lamp 1, that is, the emitted light 3 is emitted in a direction perpendicular to the optical axis 9.

The dichroic mirrors 2 and 4 have a mirror surface coated with a multi-layer film having different refractive indexes, and most of the heat rays, that is, infrared rays, of the light impinging on the dichroic mirrors are transmitted without being reflected and only visible rays are reflected. is there.

As a result, the heat rays 10 of the lamp 1 are removed by, for example, 20%, and further removed by 80% by the mirror 4, so that the radiated light 3 that strikes the subject becomes so-called cold light with almost no heat rays. Further, the emitted light 3 becomes light that spreads on the mirror surface 6 and becomes spot illumination on the mirror surface 7 and can be switched.

Furthermore, four plates 12 are provided on the edge of the light projecting opening 11 of the case 5 so that the irradiation range of the light 3 can be adjusted.
13, 14, 15 are provided as barn doors that can be opened and closed and locked. Even if the angle of the second mirror 4 is changed, the light can be locked every 180 degrees, so that the light of the light source lamp 1 always passes through the position of the light 3, that is, the center of the barn door, thereby adjusting the barn door. Is performed easily and reliably, and the irradiation light is not blocked.

As described above, the light source 1, the reflecting mirrors 2, 4, and the burn doors 12, 13, 14, 15 are integrally mounted on the case 5, and the case 5 is rotatably supported on the arm 17 of the stand 16 by the shaft 18. The arm 17 is horizontally rotatably supported on the shaft 19 of the stand 16, and the shaft 19 is mounted on the stand base 20.
It is inserted so that it can move up and down and is locked by the knob 21. By these, the irradiation light 3 can freely change the vertical position, the vertical angle, the diffusion degree, and the irradiation range.

The lamp 1 is, for example, a 24V halogen lamp, and in this case, a plug to be plugged into a 100V or 120V power outlet.
From 22 to the cord 23, the voltage is reduced to 24V by the electronic transformer 24 attached to the arm 17, and power is supplied to the lamp 1.

FIG. 3 also shows an embodiment of the present invention, in which the upper end of the stand 16 to which the first mirror 2 and the lamp 1 are attached, and the burn doors 12, 13, 14,
Gears 2 of the same diameter are attached to each end of a frame 25 that supports 15 for opening and closing.
6 and 27, and the shafts 28 and 29 of these gears 26 and 27 are
The mirror 4 is integrally mounted on the plate 30 that supports the mirror 4, and even if the vertical angle of the barn door or the mirror 4 is changed, the optical axis of the irradiation light 3 which is emitted by the light of the lamp 1 being reflected by the mirror 4 is set at the center of the barn door. It is a device that is always installed.

In the present invention, the first mirror may be omitted, the second mirror may be a combination of a plurality of mirrors, and either or all of the first mirror and the second paper may be normal mirrors. All other variants of the above examples are included in the present invention.

The present invention prevents the performer from sweating due to the heat of the illumination and the Dolan makeup to come off, and the illumination light is not blocked by the rotating mirror when the barn door is used. It is an invention that has many remarkable effects such that the angle and diffusion can be changed very easily.

[Brief description of drawings]

 FIG. 1 is a perspective view of an embodiment of the present invention. FIG. 2 is a side view of an embodiment of the present invention. FIG. 3 is a side view of a second embodiment of the present invention. Second mirror 10 ... Heat rays 12, 13, 14, 15 ... Barndoor

Claims (1)

[Claims] 1. A light source, a first mirror that emits light from the light source in a direction different from a direction of an illuminated body, and a second mirror that emits light in the radiation direction by changing the direction of the illuminated direction. The first mirror and / or the second mirror is a mirror that reflects light excluding the heat rays of the light source, and is supported around the optical path that radiates in the direction of the illuminated object, and An illumination device having a barn door that can be opened and closed.