JPH06328587A - End surface treatment of transparent member - Google Patents

Abstract

PURPOSE:To provide an end surface treatment method wherein an end surface excellent in transparency is obtainable by a simple treatment in transparently arranging the end surface of a transparent member used in an optically element or an indoor decorative element. CONSTITUTION:A coating agent C having transparency in a cured state is applied to the rough end surface 1f of an object to be treated so as to embed the fine uneveness of the end surface of the object to be treated. As a result, the fine unevenness of the end surface of the object to be treated is filled with the coating agent and the end surface of the object to be treated is made optically flat and a finished end surface 2f excellent in transparency is simply obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transparent body used as an optical element, or a transparent body used for a building material, an interior decoration element, etc., to provide an end face treatment for making the end face transparent.

[0002]

2. Description of the Related Art An optical element such as a light transmitting body or an optical lens always has an end face for entering and exiting light, and the efficiency of entering and exiting light at this end face, that is, whether transparency is good or bad. It greatly affects the overall performance. Further, in the case of a transparent body used as a building material or an interior decoration element, the transparency of the end face greatly affects the appearance.

For example, in the case of an optical transmission body which is one of the optical elements, first, the material is cut into a predetermined length with a cutter, a lathe or the like to obtain an intermediate body. The end face of this intermediate body is a rough end face having fine irregularities due to cutting marks and the like, and has a ground glass shape due to the optical effect of the fine irregularities, and thus has very low transparency. Therefore, a process of increasing the transparency of the rough end face is performed, which has been conventionally performed by polishing. However, this polishing process involves rough polishing → medium polishing →
It is necessary to stack multiple steps in sequence, such as fine polishing → buffing, and each step is a tough work that requires delicate attention and patience. This is a dirty work that mixes with the cooling water and is the most burdensome process in the process of processing the optical transmission body.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an end face processing method capable of obtaining an end face having excellent transparency with simple processing.

[0005]

According to the end surface treatment method of the present invention, a coating agent having transparency in a cured state is applied to a rough end surface to be treated so as to fill fine irregularities on the end surface to be treated. ing.

According to this end surface processing method, a finely uneven surface on the end surface to be processed is filled with a coating agent to optically and flatten the surface until scattering does not occur, so that a finished end surface with excellent transparency can be obtained. It is the one.
Therefore, particularly when the object to be treated is an optical element, it is preferable to use a coating agent having the same or similar optical characteristics (for example, refractive index and transparency) in the cured state as the optical element.

[0007]

EXAMPLES Examples of the present invention will be described below. This example is an example applied to a refractive index distribution type optical element using an acrylic synthetic resin as a raw material, and an intermediate 1 obtained by cutting a rod-shaped material into a predetermined length with a cutter or the like. Rough end face 1
A coating material C made of a synthetic resin similar to that of the intermediate body 1 is applied to f and cured. It is most preferable that the coating amount of the coating agent C be such that the fine irregularities on the rough end face 1f can be barely filled in because the influence of the surface tension can be reduced. The finished end surface 2f of the optical element 2 thus obtained has a transparency that is not inferior to the finished end surface obtained by the conventional polishing treatment.

[0008]

As described above, the end surface treatment method according to the present invention requires only a thin coating of a predetermined coating agent on the end surface to be treated, so that it is possible to apply it to an optical transmitter or an optical lens. It is possible to greatly reduce the burden imposed by the conventional polishing treatment on the processing of transparent bodies used for optical elements or building materials, interior decoration elements and the like.

[Brief description of drawings]

FIG. 1 is a processing step diagram of an end surface processing method according to an embodiment of the present invention.

[Explanation of symbols]

 1 Optical element before treatment 1f Rough end face to be treated 2 Optical element 2f Treated end face Finished end face

Claims (2)

[Claims] 1. In an end face treatment for making a rough end face of a transparent body transparent, a coating agent having transparency in a cured state is applied to the rough end face to be treated so as to fill fine irregularities on the end face to be treated. A method for treating an end surface of a transparent body, characterized in that 2. The method for treating an end surface of a transparent body according to claim 1, wherein a coating agent having the same optical characteristics as that of the transparent body to be treated in a cured state is used.