JPS61183805A - Arbitrary color arrangement lighting apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an arbitrary color lighting device that irradiates light of a plurality of colors in arbitrary colors.

[Prior Art] As shown in FIG. 2, a conventional arbitrary color illumination device of this type includes light sources 11a and 11b111 whose light intensity can be arbitrarily adjusted.
The light from C is collimated by lenses 12a, 12b, and 12c, respectively, and is then collimated by a red filter 13a, a green filter 13b, and a blue filter 13C, respectively.
Colored green and blue, these lights are sent to mirrors 15a and 15.
b and mixed through prism 16 to form optical fiber bundle 1
The light sources 11a, 11b111 are configured to be incident on one end of the optical fiber bundle 14 and irradiated from the other end of the optical fiber bundle 14.
By adjusting the light amount of c, an arbitrary colored light can be emitted.

[Problems to be Solved by the Invention] However, such a conventional device has a mirror 15a.
, 15b and the prism 16, the optical system is complicated and the entire device becomes large. When mixing blue light with blue light, the optical axes must be adjusted, making handling difficult.

It is an object of the present invention to solve the problems of the above-mentioned conventional devices and to provide an arbitrary color illumination device that does not require the use of a complicated optical system that requires optical axis adjustment.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides an arbitrary color illumination device including a plurality of color filters, each of which is combined with a variable light amount light source, in which the light passing through each color filter is A plurality of optical fiber bundles are provided, and the other ends of these optical fiber bundles are arranged in a random strand arrangement to form one optical fiber bundle.

[Function] By adopting the above means, the light passing through each color filter is incident on the corresponding optical fiber bundle,
The light is mixed and irradiated from the other end of these optical fiber bundles in accordance with a random strand arrangement.

[Example] Embodiments of the invention shown in the drawings will be described below.

FIG. 1 shows an embodiment of the invention, 1a.

1b and 1C are light sources that can arbitrarily adjust the light a, 2 at2
b and 2c are lenses that collimate the light from light sources 1a, 1b, and 1C, respectively; 3a is a red filter that colors the light that has passed through lens 2a red; and 3b is a red filter that colors the light that has passed through lens 2b green. Green filter, 3C is lens 2C
4 is an optical fiber bundle.

One end of the optical fiber bundle 4 is branched into three optical fiber bundles each consisting of approximately the same number of optical fiber strands, forming input ends 4a, 4b, and 4c, respectively, and the input end 4a passes through the red filter 3a. Light is incident thereon, and the incident end 4b is arranged so that the light passing through the green filter 3b is incident thereon, and the incident end 4C is arranged so that the light passing through the blue filter 3C is incident thereon. The other end of the optical fiber bundle 4 is combined into one optical fiber bundle to constitute an irradiation end 4d, and at the irradiation end 4d, optical fiber strands are connected to the incidence ends 4a, 4b, and 4C, respectively. are arranged randomly so that the irradiated light is evenly mixed according to color.

In the above arbitrary color scheme illumination device, the light from the light source 1a is collimated by the lens 2a, passes through the red filter 3a, is colored red, and enters the incident end 4a, and the light source 1b
The light from the lens 2b is collimated by the lens 2b, passes through the green filter 3b, is colored green, and enters the incident end 4b, and the light 1. .

The light from 1C is collimated by a lens 2C, passes through a blue filter 3C, is colored blue, and enters an incident end 4C, and the incident light from incident ends 4a, 4b, and 4C passes through an optical fiber bundle 4. The light is mixed and irradiated evenly for each color from the irradiation end portion 4d of the randomly arranged strands. By adjusting the light intensity of the light sources 1a, 1b, and 1c, it is possible to irradiate light of any color.

In the above embodiment, three types of color filters, red filter 3a, green filter 3b, and blue filter 3C, which correspond to the three primary colors of light, were used. However, for example, in the case of arbitrary color arrangement within a special color range, It goes without saying that the present invention is not limited to the above embodiments, and that various changes and modifications of the above-described embodiments can be made.

[Effects of the Invention] Since the present invention is configured as described above, it is not necessary to use complicated optical systems such as mirrors and prisms as in conventional systems to mix the light passing through each color filter, and therefore the entire device can be made smaller. In addition to being lightweight,
It has excellent effects such as being extremely easy to handle because it does not require optical axis adjustment.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing one embodiment of the present invention, and FIG. 2 is an explanatory diagram showing an example of a conventional one. 1a, 1 b, 1 c, 11a111b, 11c...
・Light source, 2a, 2b, 2c, 12a, 12b, 12c
m... Lens, 3a, 13a... Red filter, 3
b, 13b... Green filter, 3G, 13C... Blue filter, 4.14... Optical fiber bundle, 4a, 4b
, 4C...Incidence end, 4d...Irradiation end, 15a,
15b...mirror, 16...prism. Applicant Hoya Co., Ltd. Representative Masayuki Asakura Figure 1 Figure 2

Claims (1)

[Scope of Claims] 1. In an arbitrary color illumination device equipped with a plurality of types of color filters, each of which is combined with a light source whose light intensity is variable, a plurality of optical fiber bundles are provided, each of which receives light passing through each of the color filters, An arbitrary color arrangement illumination device characterized in that the other ends of these optical fiber bundles are arranged in a random strand arrangement and combined into one optical fiber bundle. 2. The arbitrary color scheme illumination device according to claim 1, wherein the color filter is comprised of three types: red, green, and blue. 3. The arbitrary color arrangement illumination device according to claim 1, wherein the plurality of optical fiber bundles are composed of substantially the same number of optical fiber strands. 4. The arbitrary color arrangement illumination device according to claim 1, wherein the optical fiber bundle is branched into a plurality of fibers only near the input end.