Wavelength division multi-channel optical module and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-2016154195-A1
Application number	US-201514952805-A
Country	US
Kind code	A1
Filing date	Nov 25, 2015
Priority date	Nov 27, 2014
Publication date	Jun 2, 2016
Grant date	—

Abstract

Provided herein is an optical module including: an optical receptacle including a first lens and a second lens; a lens module including a lens unit facing the second lens of the optical receptacle; and an optical element configured to receive a beam emitted from the lens module or form a beam to be emitted to the lens module. A horizontal length and a vertical length of a cross-section of the first lens may differ from each other, and a horizontal length and a vertical length of a cross-section of the second lens may differ from each other.

First claim

1 . An optical module comprising:
an optical receptacle including a first lens and a second lens; a lens module including a lens unit facing the second lens of the optical receptacle; and an optical element configured to receive a beam emitted from the lens module or form a beam to be emitted to the lens module, wherein a horizontal length and a vertical length of a cross-section of the first lens differ from each other, and a horizontal length and a vertical length of a cross-section of the second lens differ from each other.

2 . The optical module according to claim 1 , further comprising:
an alignment board provided to align the lens module.

3 . The optical module of claim 2 ,
wherein the lens module includes a guide column, and wherein the alignment board includes a guide column alignment hole into which the guide column is inserted.

4 . The optical module of claim 2 ,
wherein the alignment board includes an alignment mark for mounting of the optical element, and wherein the optical element is mounted on the alignment mark.

5 . The optical module of claim 1 , wherein the lens module comprises a lens module body in which the lens unit is included,
wherein the lens unit is formed on a surface of the lens module body that faces the second lens, and a surface of the lens module body that faces the surface formed with the lens unit comprises an inclined reflective surface.

6 . The optical module of claim 5 ,
wherein the lens module comprise a lower lens unit formed on a lower surface of the lens module body, wherein the optical element is disposed below the lower lens unit, and wherein the lens module comprises a protrusion provided on the lower surface of the lens module body and configured to maintain a distance between the optical element and the lower lens unit.

7 . The optical module of claim 3 , further comprising:
a printed circuit board mounted with the lens module and the alignment board, wherein the printed circuit board includes a filter module alignment hole into which the guide column is inserted.

8 . The optical module of claim 2 , further comprising:
a drive integrated circuit disposed on the alignment board.

9 . The optical module of claim 7 , further comprising:
a package mounted with the printed circuit board, the package comprising a package guide column configured to mount the printed circuit board in the package, wherein the printed circuit board includes a package alignment hole into which the package guide column is inserted.

10 . The optical module according to claim 1 , wherein the lens module further comprises a block filter provided in the lens unit.

11 . The optical module according to claim 1 , wherein at least one of the first lens, the second lens, and the lens unit comprises a spherical lens or an aspherical lens.

12 . The optical module according to claim 1 , wherein the optical element comprises an array-type optical element.

13 . A method of manufacturing an optical module, comprising:
forming an optical receptacle including a first lens formed such that a horizontal length and a vertical length of a cross-section thereof differ from each other, and a second lens formed such that a horizontal length and a vertical length of a cross-section thereof differ from each other; forming a lens module including a lens unit and a guide column; aligning the lens module by inserting the guide column of the lens module into a guide column alignment hole of an alignment board; and aligning the optical receptacle such that the lens unit faces the second lens of the optical receptacle.

14 . The method of claim 13 , further comprising:
aligning the lens module and the alignment board on a printed circuit board by inserting the guide column into a filter module alignment hole of the printed circuit board.

15 . The method according to claim 13 , wherein the aligning of the lens module comprises:
mounting an optical element on an alignment mark of the alignment board.

16 . The method of claim 14 , further comprising:
aligning the printed circuit board in a package by inserting a package guide column of the package into a package alignment hole of the printed circuit board.

17 . The method according to claim 16 , wherein the aligning of the optical receptacle comprises:
sealing the optical receptacle with the package.

18 . The method according to claim 13 , wherein the forming of the optical receptacle comprises:
forming the optical receptacle using a plastic injection molding method, and wherein the forming of the lens module comprises: forming the lens module using a plastic injection molding method.

19 . (canceled)

20 . The method according to claim 13 , wherein at least one of the first lens, the second lens, and the lens unit is formed in a spherical or aspherical shape.

21 . The optical module according to claim 1 , wherein the lens unit comprises a plurality of lenses.

Assignees

• Korea Electronics Telecomm

Inventors

• Lim Kwon Seob
• Park Hyoung Jun
• Kang Hyun Seo
• Koh Jai Sang
• Kim Keo Sik
• Kim Young Sun
• Kim Jeong Eun
• Ryu Ji Hyoung
• Jeon Eun Kyoung
• Heo Young Soon

Classifications

• G02B6/4214

  the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device (G02B6/4246 takes precedence) · CPC title

• G02B6/425 Primary

  Optical features (semiconductor laser arrays H01S5/40; hybrid LED arrays H10W90/00) · CPC title

• G02B6/428

  containing printed circuit boards [PCB] · CPC title

• G02B6/4251

  Sealed packages (G02B6/4248 takes precedence) · CPC title

• G02B6/4227

  Active alignment methods, e.g. procedures and algorithms · CPC title