JPS62257109A - Line point sensor - Google Patents

Abstract

PURPOSE:To easily deform a line point end surface into a shape which fits completely to the shape of a detecting part by arraying one-end sides of many optical fibers linearly, fixing the end surfaces by a flexible material, and bundling the other-end sides. CONSTITUTION:One end surfaces of a bundle 2 of many optical fibers is uniformized in parallel, the other end is formed as a bundle part 5, and the line point sensor part is fixed by the flexible material to form a fixation part 4. Namely, the flexibility of the sensor part is extremely superior, so the sensor part is easily worked triangularly or semicircularly and its end surface part is deformed into various shapes such as a quadrangular prism, a semiarc, and a cylinder. Consequently, the end surface is deformed large according to the shape of a body to be sensed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a line point sensor in which aligned end faces of optical fibers are fixed with a flexible material.

[Conventional technology]

A line point sensor, in which a large number of optical fibers are aligned and one end is clamped and fixed between hard materials such as aluminum plates or plastic plates, can be used as a line light source for copying machines, or as an image reading sensor [Problems to be solved by the invention] As mentioned above, the optical fiber aligned end faces of conventionally developed line point sensors are held between inflexible aluminum plates, etc., so they are extremely useful as perfectly straight line point sensors. It should not be used at all in some sensors where the end face needs to be processed into a triangular or semicircular shape, or where one end face of the line point sensor needs to be transformed into a shape other than a plane, such as a semicircle, circle, or polygon. I couldn't do it.

[Means for solving problems]

Therefore, the present inventor conducted studies with the aim of developing a line point sensor in which the line point end can be easily deformed and the line point end face can be easily transformed into a shape that perfectly fits the shape of the detection part. , completed the invention.

The gist of the present invention resides in a line point sensor characterized in that one ends of a large number of optical fibers are aligned in a straight line and the ends are bundled.

The line point sensor of the present invention will be explained in more detail with reference to the drawings.

FIG. 1 is a perspective view of the line point sensor of the present invention, where (1) shows the uninvented line point sensor, and (2)
) is the east of a number of optical fibers, one end face of which is a parallel aligned line point sensor part (3) and the other end forming a convergence 5 (5). (4) is a fixed part in which a part of the line point sensor is fixed with a flexible material.

As the optical fiber used in carrying out the present invention, a modest number of optical fibers can be used, such as inorganic optical fibers and sheath-core type having a core made of plastics such as polystyrene, polymethyl methacrylate, polycarbonate, and polyglutarimide. Plastic fibers, image transmission type fibers, multi-optical fibers in which many light guide paths are formed in one fiber, etc. can be used.

Materials for forming the flexible part at the end of the line point include natural rubber, silicone rubber, acrylic rubber, polyurethane,
It is preferable to use rubber-based materials such as ethylene propylene rubber and fluorine-based polymers, but other plastic materials that do not impair the optical properties of the optical fibers used, such as ABS, may also be used.
.

Polyamide and the like can also be used as appropriate. Further, filler such as carbon black may be added to this material.

The line point sensor of the present invention has a part of the sensor that is extremely flexible compared to conventionally developed line point sensors.
Alternatively, as shown in (b), since it can be easily processed into a triangular or semicircular shape, the shape can be changed depending on the shape of the end face of the substance to be sensed.

Furthermore, the line point sensor of the present invention is shown in FIG.
As shown in (b), the end face can be deformed into various shapes such as a square prism, a half-arc, or a cylinder, and the end face can be greatly deformed depending on the shape of the object to be sensed. It has characteristics.

[Brief explanation of drawings]

Figure 1 is a perspective view of the line point sensor of the present invention, Figures 2 (a) and (b) are plan views of the head portion of the line point sensor of the present invention modified and processed;
Figures (b) and (b) are perspective views of a three-dimensionally deformed head portion of the line point sensor of the present invention. 1...Line point sensor 2...Optical fiber 3...Sensor head section 4...Sensor flexible section 5...Optical fiber convergence section blue 2 B (A) (Rono + 3 points)

Claims (1)

[Claims] A line point sensor characterized by aligning one end of a large number of optical fibers in a straight line, fixing the end face with a flexible material, and converging the other ends.