Receptacle and method of manufacturing the same

• US 5,684,903 A
• Filed: 06/29/1995
• Issued: 11/04/1997
• Est. Priority Date: 06/30/1994
• Status: Expired due to Term

• Current Assignee: Hamamatsu Photonics KK
• Original Assignee: Hamamatsu Photonics KK, Kyocera Corporation
• Inventors: Ikeya, Takeshi, Yamagishi, Takashi, Ikegami, Shin, Kyomasu, Mikio, Yasuda, Toshimichi
• Primary Examiner(s): Palmer, Phan T. H.
• Application Number:
  US08/496,405
• Time in Patent Office: 859 Days
• Field of Search: 385/93, 385/84-94, 385/60
• US Class Current: 385/93
• CPC Class Codes: G02B 6/3874 using tubes, sleeves to align ferrules
• CPC Class Codes: G02B 6/4292 the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements

Abstract

This receptacle comprises a case made of resin, holding a rigid sleeve by being in contact with the outer wall of the rigid sleeve, having a through hole communicating with the through hole of the rigid sleeve at one end thereof.

Claims

1. A receptacle for coupling light from a light source to an optical fiber installed in a ferrule, comprising:

(a) a rigid sleeve having a through hole defined by the inner radius, wherein the ferrule fits into the inner hole by inserting the ferrule into it;

(b) a case made of resin, holding said rigid sleeve by being in contact with the outer wall of said rigid sleeve, having a through hole communicating with the through hole of said rigid sleeve at one end thereof; and

(c) a lens fixed to the inner wall of the through hole of said case, the optical axis of said lens being identical with the axis of the through hole of said case, the axis of the through hole of said rigid sleeve being identical with the axis of the through hole of case, the light being coupled to the optical fiber through said lens, sleeve and ferrule;

further comprising a pinhole member having;

first and second surfaces opposing each other, a pinhole extending between said first surface and said second surface along the axis of said rigid sleeve, a side surface surrounding said pinhole member and being continued to said first and second surfaces, wherein said side surface is fixed to the inner wall of said rigid sleeve, wherein said first surface faces the light source via the through hole of said case, and wherein a transfer surface connects said first surface to said side surface, said transfer surface forming obtuse angles with said side and first surfaces, wherein an opening edge of the through hole at the end of said case nearer to said rigid sleeve is in contact with said first surface of said pinhole member.

2. A receptacle for coupling light from a light source to a fiber, comprising:

(a) a rigid sleeve;

(b) a one piece case made of resin, having first and second through holes, an outer surface of said rigid sleeve being in contact with an inner surface of said first through hole;

(c) a lens fixed to an inner surface of said second through hole of said case, said lens having an optical axis identical with an axis of said first through hole; and

(d) a pinhole member having;

first and second surfaces opposing each other,

a pinhole extending between said first surface and said second surface and aligned along an axis of said rigid sleeve,

a side surface surrounding said pinhole member and being continued to said first and second surfaces,

wherein said side surface is fixed to the inner surface of said rigid sleeve,

wherein said first surface faces the light source via said second through hole of said case,

wherein a transfer surface connects said first surface to said side surface, said transfer surface forming obtuse angles with said side surface, and

wherein an opening edge of said second through hold of said case nearer to said rigid sleeve is in contact with said first surface of said pinhole member.

3. A receptacle, comprising:

(a) a rigid sleeve;

(b) a one piece case made of resin, having first and second through holes in communication with each other, an outer surface of said rigid sleeve being in contact with an inner surface of said first through hole;

(c) a light source fixed in said case;

(d) a lens fixed to an inner surface of said second through hole of said case, and arranged between said light source and said sleeve, said lens having an optical axis identical with an axis of said first through hole.

4. A receptacle according to claim 3, wherein said outer surface of said sleeve is rough.

5. A receptacle according to claim 4, wherein a portion of said outer surface of said sleeve has a concave region.

6. A receptacle according to claim 3, wherein the resin is made of liquid crystal polymer, and polymer molecules of said resin are aligned with the axis of said first through hole.

7. A receptacle according to claim 3, wherein said sleeve is comprised of metal.

8. A receptacle according to claim 3, wherein said sleeve is comprised of ceramic.

9. A receptacle according to claim 3, further comprising a pair of clips that extend from said case and that for grasping an outer wall of a housing that contains a ferrule therein when the ferrule is inserted into said sleeve.

10. A receptacle according to claim 3, further comprising a pin hole member having a pinhole extending along the axis of said sleeve, wherein an end of a ferrule when inserted into said sleeve abuts on an opening edge defined by said pinhole.