JPS583207B2 - Optical equipment equipped with lenses, and their manufacturing methods and manufacturing tools - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cylindrical optical device equipped with a magnifying glass or other lens, a method for manufacturing the same, and a manufacturing tool.

Conventionally, a cylindrical engineering device equipped with a lens has a lens holder inside the nuchal body (cylindrical body) that supports the lens, only a lens holding edge stands up at the open end, and the lens holding edge is pressed inward and bent. There is a structure in which the lens is fixed by moving the lens (conventional example in Japanese Utility Model Publication No. 30-156530).

However, if only the lens holding edge is erected, it is extremely difficult to apply pressure evenly over the entire circumference to bend the lens holding edge inward, which has the disadvantage of causing distortion or damage to the lens. There is.

Further, the means for pressing the lens holding edge is not shown.

As a tool for fixing lenses in this type of optical equipment, there is a ring attachment tool (Japanese Patent Publication No. 47-269).
No. 14), but this tool reversely deforms a flat, elastically deformable ring, and does not bend the lens holding edge.

This invention solves the drawbacks of the conventional optical equipment in which the lens is fixed by the lens holding edge.The purpose of this invention is to create a structure in which the lens holding edge can be evenly pressurized over the entire circumference. It is an object of the present invention to provide a method and a tool capable of applying pressure uniformly to the entire circumference of the lens holding edge.

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, A is an optical device equipped with a lens, 1 is a cylinder to which a lens 2 is attached, and this cylinder is made of, for example, aluminum. The opening edge is made of a relatively thick plastic metal material, and a lens holding stage 3 is formed inside the opening end, and the opening edge on the outside of the holding stage is formed with a comparatively thin inner lens holding edge 4. It is separated by a groove on the outside thick tool guide edge 5.

B is a tool for fixing the lens 2 to the cylindrical body 1 of the optical device, and is made of a disk with a shaft 6 protruding from the back side.
The outer diameter of the disc is set to fit tightly into the groove between the outer tool guide edge 5 and the inner lens holding edge 4 at the opening edge of the cylindrical body 1 of the optical device, and the pressing surface of the disk protrudes into a blade shape, and the inner surface of the blade-like protruding edge 8 is formed into a tapered surface so that the entire pressing surface is depressed.

9 is a recessed portion. When the tip of the edge 8 is in contact with the bottom of the groove between the lens holding edge 4 and the tool guide edge 5 at the open end of the cylindrical body 1, the tapered surface 10 on the inside of the edge 8 presses the lens holding edge 4 inward. The inclination angle of the tapered surface 10 is set so that the tapered surface 10 can be laid down.

Next, attach the lens 2 to the cylinder 1 using the tool B to the optical device A.
To assemble the lens 2, place the lens 2 on the lens holder 3 of the cylindrical body 1, place the disc 7 of the tool B with its pressing surface facing the lens, and connect the blade-shaped ridge 8 to the lens holding edge 4 and the outside tool. It fits into the groove between the guide edges 5.

In this state, the disk 7 is supported by the tool guide edge 5 protruding from the open end of the cylinder 1 and is stable.

The blade-like protruding edge 8 of the disk 7 is partially fitted into the groove between the tool guide 5 and the lens holding edge 4.

In this state, by lightly tapping the shaft 6 on the back side of the tool B, the blade-shaped ridge 8 is in close contact with the inner surface of the tool guide edge 5, and the blade-shaped ridge 8 enters the groove without any wobbling movement. As shown in FIG. 2, the tapered surface 10 on the inner surface
As shown in FIG. 2, the holding edge 4 presses down the periphery of the lens 2 evenly, so that the lens is in a fixed state where it will not come off. The periphery will not be damaged.

The present invention is as described above, and an optical device equipped with a lens uses a cylindrical body that supports the lens as a plastic metal material,
The opening end of the cylindrical body is made to have a required thickness, and a lens holder is formed inside the opening end, and the opening edge outside the holder is used as an inner lens holding edge and an outer tool guide edge, and the lens holder is fitted into the holder. The peripheral edge of the lens is supported by only the lens holding edge being caulked and laid down, and the tool has a blade-shaped peripheral edge, a tapered inner side of the blade-shaped protrusion, and a recessed pressing surface.
The tip of the blade-like peripheral edge has an outer diameter that tightly fits into the groove between the outer tool guide edge and the inner lens presser edge in the opening edge of the optical device barrel, and the edge of the blade-like peripheral edge has an outer diameter that fits tightly into the groove between the outer tool guide edge and the inner lens presser edge at the opening edge of the optical device barrel. The inclination angle of the tapered surface is set so that the lens holding edge can be tilted inward by the tapered surface on the inside of the cutting edge when it comes into contact with the bottom of the groove between the tools. Because it makes close contact with the cylindrical body and allows the lens holding edge to fall down evenly without wobbling, it is different from the conventional lens holding tool in which only the lens holding edge is formed on the lens fitting part of the barrel. This has an excellent effect of preventing the lens from being damaged or distorted due to uneven lens pressing of the lens holding edge.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; Fig. 1 is a partially cutaway side view of an example of an optical device equipped with a lens during the manufacturing process, and Fig. 2 shows the main parts of the optical device obtained in the same way. FIG. 3 is an enlarged vertical side view. A...Optical equipment, 1...Cylinder, 2...Lens, 3...Step, 4...Lens holding edge, 5...Tool guide edge, B...
Tool, 6... Shaft rod, 7... Disc, 8... Blade-shaped ridge, 9...
...Concave portion, 10...Tapered surface.

Claims (1)

[Scope of Claims] 1. The cylindrical body that supports the lens is made of a plastic metal material, and the opening end of the cylindrical body has a required thickness, and a lens holder is formed inside the opening end, and the opening edge on the outside of the holder is formed. An optical device equipped with a lens, characterized in that an inner lens holding edge and a tool guide edge are used, and the peripheral edge of the lens fitted to a receiving stage is supported by caulking only the lens holding edge. 2. A cylindrical body in which a lens holder is formed inside the opening end, and the opening edge outside the holder serves as a lens holding edge and a tool guide edge outside the cylindrical body is made of a plastic metal material, and the lens is fitted into the lens holder. Afterwards, a tool for tilting the lens presser edge inward is placed on the lens presser edge, and the outer periphery of the tip of the tool is tightly surrounded by the tool guide edge and lightly pressed with the tool, so that the lens presser edge is folded into the lens periphery. A method for manufacturing an optical device equipped with a lens characterized by fixing the lens upside down along the 3. The pressing surface of the outer diameter disc that fits tightly into the groove between the outer tool guide edge and the inner lens holding edge on the opening edge of the optical device cylinder body is made such that the peripheral edge protrudes into a blade shape and the inside of the blade-shaped protruding edge is tapered. The pushing surface is recessed, and the lens holding edge can be tilted inward by the tapered surface inside the cutting edge when the tip of the cutting edge comes into contact with the bottom of the groove between the tool guide edge and the lens holding edge. An engineered bird for manufacturing optical equipment equipped with a lens characterized by having a tapered surface with an inclination angle set to