JPS6011803A - Image scope - Google Patents

Abstract

PURPOSE:To save trouble of arranging a large number of optical fibers, to eliminate gaps among the fibers, and to obtain an image scope capable of giving a sharp image by forming a large number of light guides in a large number of polymer films and laminating said films. CONSTITUTION:A photopolymerizable monomer, such as methyl acrylate, is incorporated in, e.g., polycarbonate with 1.59 refractive index, and the mixture is molded into a film 1. A photomask 3 is overlaid on this film 1 to expose to UV rays the parts of the film 1 corresponding to a clad layer 4 and form a methyl acrylate polymer with 1.49 refractive index by photopolymerization, serviceable as a clad layer 4 lower in refractive index than 1.59. The upper and lower sides of the film 1 are coated with layers lower in said index than 1.59. A necessary number of the films 1 are laminated and bonded, and the outer circumference of the laminated films 1 are provided with a protective material 5. Both end faces of the films 1 are polished and provided with lens systems. The image scope thus obtained can obtain a sharp image, and it is large in the areas of the light guides 2 and high in the density of the light guides 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an image scope that can directly transmit images.

[Background technology]

Conventional image scopes are bundles of optical fibers4
It was made by. This is made by bundling hundreds to hundreds of optical fibers, depending on the size of the image that can be transmitted. In order to bundle these fibers, each fiber must be arranged in the same positional relationship at the input end face and the output end face, as shown in F o g 1. Also, in the case of circular fibers, there were gaps between the fibers.

[Purpose of the invention]

The object of the present invention is to provide an image fiber that eliminates the trouble of arranging fibers and eliminates gaps caused by the shape of the fibers.

[Disclosure of the invention]

(Example) The present invention will be described below with reference to the drawings showing an example of the present invention. First, a leading waveguide 2 is formed on a film 1. Base material of the film (e.g. polycarbonate, bending E4n1=1.59
) is impregnated with a photopolymerizable monomer (for example, methyl acrylate) and made into a film. A photomask 3 is placed on top of the film 1 and exposed to 1ζ ultraviolet rays. The photomask 3 covers the photoconductive wave path 2 which becomes the core part, so that the part which becomes the cladding 4 is irradiated with ultraviolet rays. (Figure 2) The polymerized monomer methyl acrylate has a refractive index of approximately 1.49, the base material polycarbonate has a refractive index of 1.59 and becomes the optical waveguide 2, and the polymerized acrylic-dispersed methyl forms the cladding layer 4. .

In order to apply the cladding layer 4 to the upper and lower surfaces of the film 1,
Coating with a material having a refractive index smaller than 1.59 (eg, acrylic emulsion). The film 1 containing the light produced by 4'9 and the 9 wave paths 2 must be laminated in a certain number of layers and bonded together so that the film 1 does not deform. Furthermore, as shown in Fig. 3 (protective material 5
administer. (Fig. 3) By polishing both ends of this laminated film 1 and adding a simple lens system to each, for example, as shown in Fig. 2134, an intercom device 6 can also be used to respond to outpatients while looking at their faces. becomes possible.

〔Effect of the invention〕

Since the present invention is made as described above, it has the following effects.

(2) Unlike the conventional bundle type fiber shown in FIG. 1, there is no need to arrange the waveguides.

■ By reducing the rlr or thickness of the cladding layer 4 provided on the left and right sides and above and below around the leading waveguide section 2, the area of the optical waveguide section 2 is widened (and the area becomes denser at 1.11 o'clock, making it clearer). An image of an elephant is sipping.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the image scope, where Figure 1 is a perspective view of the film, Figure 2 is a sectional view, Figure 3 is a front view, and 41<I is -1-1. Lesson 1: Figures 1 and 5 are conventional examples. 1...Film, 2...Optical waveguide? l/proverb 6.3...
Mask, 4... Grid layer Patent applicant Matsushita Electric Works Co., Ltd. Patent attorney Satoshi Takemoto (2 idiots) Figure 1 Figure 3 Figure 4

Claims (1)

[Claims] (1) An image scope characterized by a large number of 112r trowels in which a large number of leading waveguides are formed on a polymer film.