Method for producing resin molded article, resin molded article, resin molded article for endoscope, endoscope using resin molded article, and apparatus for producing the resin molded article

A resin molding and manufacturing method technology, applied in the field of manufacturing equipment for resin molded products, capable of solving problems such as adverse effects of optical components on optical functions

Inactive Publication Date: 2012-11-21
OLYMPUS CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the unevenness of the gate mark scatters light on the surface of the optical element, it may adversely affect the optical function of the optical element

Method used

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  • Method for producing resin molded article, resin molded article, resin molded article for endoscope, endoscope using resin molded article, and apparatus for producing the resin molded article
  • Method for producing resin molded article, resin molded article, resin molded article for endoscope, endoscope using resin molded article, and apparatus for producing the resin molded article
  • Method for producing resin molded article, resin molded article, resin molded article for endoscope, endoscope using resin molded article, and apparatus for producing the resin molded article

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0056] (structure)

[0057] Figure 1A , Figure 1B , Figure 1C , Figure 1D , 19 d27edc-bf6d-4590-b119-9a5170c7637e shows the first embodiment of the present invention. Figure 1A It is a plan view of a two-color molded product 5 which is a resin molded product of the present embodiment. Figure 1B yes Figure 1A The 1B-1B line profile, Figure 1C yes Figure 1A The 1C-1C line profile, Figure 1D yes Figure 1C 1D-1D line profile. and, figure 2 It is an overall vertical cross-sectional view of a two-color molding die (molding die) 28 for molding the two-color molded product 5 .

[0058] Such as Figure 1A , Figure 1B , Figure 1C , Figure 1D As shown, the two-color molded product 5 includes: a primary molded body 3 having an optical element 1 and a protruding portion 2 protruding from the outer periphery of the optical element 1, and a cylindrical support member (secondary molded body) that supports the optical element 1. ) 4. The optical element 1 is formed ...

no. 2 Embodiment approach

[0101] (structure)

[0102] Figure 20 and Figure 21 The second embodiment of the present invention is shown. In the first embodiment, one protrusion 2 is provided on a part of the outer peripheral surface of the optical element 1 of the primary molded body 3 . In this embodiment, two protrusions 2a, 2b are provided on the outer peripheral surface of the optical element 1 of the primary molded body 3 . The two protrusions 2 a and 2 b are arranged so as to be separated from each other by 180° in the circumferential direction of the optical element 1 . Furthermore, each of the two protruding parts 2a and 2b has a width sufficient to provide a pin gate 24a required for molding the primary molded body 3 . In addition, the two protrusions 2a and 2b may have the same size or different sizes.

[0103] With respect to the thickness direction of the optical element 1 , the thickness of the two protruding portions 2 a and 2 b is smaller than the thickness of the portion adjacent t...

no. 3 Embodiment approach

[0114] (structure)

[0115] Figure 24 , Figure 25A , Figure 25B , Figure 26 , Figure 27 , Figure 28 , Figure 29 The third embodiment of the present invention is shown. In this embodiment, the present invention is applied to the distal end portion 306 of the endoscope 301 . Figure 24 The overall configuration of an endoscope 301 for observing the inside of a body cavity and performing diagnosis, treatment, etc. is shown. The endoscope 301 has an elongated and flexible insertion portion 305 to be inserted into a patient's body cavity. A rigid distal end portion 306 is provided at the distal end of the insertion portion 305 , and an operation portion 307 is provided at the proximal end of the insertion portion 305 .

[0116] The insertion portion 305 has an elongated flexible tube portion 305a and a bent portion 305b connected to the distal end of the flexible tube portion 305a. The front-end part 306 is connected to the front-end|tip of this bending part 305b. ...

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PUM

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Abstract

Disclosed is a method for producing a resin molded article, which comprises: a first molding step wherein a first molded body (3) that has an optical element (1) and a projected portion (2) protruding from the optical element (1) is molded from a light transmitting material; and a second molding step wherein a supporting member (4) for supporting the first molded body (3) is molded from a material that is different from the molding material of the first molded body (3) and the first molded body (3) and the supporting member (4) are integrated with each other. The projected portion (2) is molded so as to protrude toward the supporting member (4). In the first molding step, the molding material of the first molded body (3) is supplied into a first cavity (34) of a mold for the first molded body (3) by being supplied into a molding space (1A) for the optical element (1) via a molding space (2A) for the projected portion (2) from a pin point gate (24a) of the mold for the first molded body (3).

Description

technical field [0001] The present invention relates to a method for manufacturing a resin molded product obtained by integrally molding an optical element used in an observation optical system of an endoscope and / or an imaging optical system of a camera, etc., and a supporting member for supporting the optical element, a resin molded product, A resin molded product for an endoscope, an endoscope using the resin molded product, and a manufacturing apparatus for the resin molded product. Background technique [0002] For example, a method using a two-color molding technique is known as a method of integrally molding an optical element such as a lens and a supporting member for supporting the optical element using a resin material. A general method based on two-color molding is described below. First, as primary molding, for example, a mold having a cavity in the shape of an optical element is filled with a molten resin material for primary molding to mold an optical element ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/16B29C45/26B29D11/00B29L11/00
CPCB29D11/00432B29K2995/0025B29D11/00692B29C45/0025B29K2995/0026B29C2045/0027B29L2011/0016B29C45/1657
Inventor 菊森一洋野中航新村徹
Owner OLYMPUS CORP
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