JPS60129715A - Lens barrel and its manufacture - Google Patents

Abstract

PURPOSE:To simplify the structure of a lens frame and to fix a lens to a holding frame easily and precisely by fixing the lens to the lens holding frame which has no specifying part for the lens position only with an adhesive. CONSTITUTION:The lens holding frame 1 having no specifying part for positioning the lens is butted against a jig 3. An optical element L is inserted from above in said state and an adhesive is supplied as shown by an arrow to the contacting part between the holding frame 1 and optical element L to couple both of them with each other. Then, the optical element L never slants during attachment. Consequently, the structure of the holding frame 1 is simplified greatly and high-precision work is carried out. Further, it is not necessary to adjust the inclination of the lens during the attachment, so the lens is fixed easily and precisely.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Application (11) This invention relates to a lens barrel having a lens attached with an adhesive and a method for manufacturing the same.

(Prior art) When attaching a lens to a lens holding frame in a lens barrel, conventionally a (1M holding frame 1 as shown in Fig. 141)
A regulating part 2 is provided, the lens L is pushed against the regulating part 2, and then a retaining agent is injected between the holding frame 1 and the lens L from the direction of the arrow to fix them. According to this method, the lens L
It is fine if the holding frame 1 has a tight shoulder, but if the curvature of the lens is strong as shown in Figure 1, the lens tends to tilt when it hits the LFi regulating part 2 due to the clearance t, and fine adjustment is necessary. However, adjusting Jin's pieces is not something that can be done easily.

In addition, when there are multiple lenses, the shape of the holding frame 1 is rough and it is difficult to process it to 1% precision of the regulating part. When ' is large, υ processing is performed in one direction, and the opposite direction is υ processing only from the left direction in FIG.

@Figure 2 shows optical [iiL
According to this method, the optical element does not tilt, but due to the thickness of the restricting part 2, the working in the optical axis direction is prevented.・There is a drawback that the distance W-D cannot be long. It is also difficult to push in the optical elements.

OBJECTS OF THE INVENTION The present invention relates to a method for mounting optical elements and an optical device manufactured thereby, which eliminates the above-mentioned problems of the prior art.

(Structure of the Invention) Figures 3 to 5 show various embodiments of the present invention. The holding frame 1 hits the jig 3. In this state, insert the optical element from above, and attach the holding frame 1 and the optical element! * Supply the retaining agent to the LO contact part from the direction of the arrow to firmly bond the two. - Remove the optical element like this, it's optical! 11 times will not tilt. In addition, since the holding frame 1 and the optical element υ end coincide with each other, the working discances W and D4 of the optical element are the same. I can get enough.

In the implementation direction shown in FIG. 4, the optical element is held down from above with a jig 4, and a holding agent is supplied to the side opening 5 of the holding frame 1 to fix it while preventing the optical element from lifting up. It's a method.

The implementation row in figure WX5 is a fixing method when the end face of the holding frame l and the end face of the optical element are not on the same plane. In this case, use i A 3' which has a step 3'' and an annular groove ill as shown in the figure. Then, insert the optical fiber and supply the retaining agent.

! 6-0 Practical feeding is a method in which a holding frame 1 having a regulating part 2 is used, a retaining agent is supplied and fixed, and then the regulating part is cut and removed.

(Effects of the Invention) The present invention provides the following effects for manufacturing an optical device using the method described above. It is possible to perform precise machining (all machining in one direction) with a fist and a knife.

2. Since there is no regulatory department, working distance can be maximized.

3 Optical element Lv#A
There is no need to correct optical distortion, and optical performance does not deteriorate due to lens inclination.

4. Insertion of optical elements is much easier than with conventional arrays (especially the one shown in Figure 2).

As described above, according to the method of the present invention, the optical element can be fixed to the holding frame easily and elliptically, and the completed optical equipment is made of M4, which has a ring wire and is more convenient than the conventional one. Working distance can also be longer.

[Brief explanation of the drawing]

No. 1181 is a cross-sectional view of the conventional lens barrel; Figure 5 shows the implementation of the present invention using a jig. Figure 5 shows the jig with different simplifications. Frame 2: Regulation m 3: Ken^ 4: Pressure Jirori 5: 11 section opening Patent applicant Konishi Rokusha A1 Saku Co., Ltd. Applicant's agent Patent attorney Fumi Sato (1 other person)

Claims (1)

[Scope of Claims] ＼ 1) A lens barrel to which a lens is fixed with an adhesive v) to a lens holding frame having a regulating portion for positioning the lens. 2) A lens barrel with a lens fixed to the lens holding frame with a regulating part for positioning the lens. Lens barrel 3) with the lens fixed with adhesive, with the same recess at the end, connect the end face of the lens holding frame and the end face in the optical axis direction of the lens inserted into the Toj holding frame to the fI3 member. A method for manufacturing a lens mirror, in which the lens is placed in the lens holding frame in a state where it is identified by applying one agent V.