Lens structure and optical connection structure

Patent metadata

Field	Value
Publication number	US-12189140-B2
Application number	US-202017430799-A
Country	US
Kind code	B2
Filing date	Jan 31, 2020
Priority date	Feb 15, 2019
Publication date	Jan 7, 2025
Grant date	Jan 7, 2025

Abstract

An embodiment lens structure body includes a microlens portion of double-sided asymmetric aspherical shape having a refraction surface on an illuminant side and a refraction surface on an emission side so as to be opposed to the refraction surface, and marker portions formed so as to be joined to both ends of the microlens portion in a direction perpendicular to an optical axis.

First claim

The invention claimed is:

1. A lens structure body comprising:
a lens portion having a first refraction surface on an illuminant side and a second refraction surface on an emission side so as to be opposed to the first refraction surface, wherein:
the first refraction surface satisfies

z
=

z
c

-

r

b
⁢
1

⁢

1
-

(

y

r

a
⁢
1

)

2

z
c

=

l
a

+

r

b
⁢
1

⁢

1
-

(

0.5
D

r

a
⁢
1

)

2

1.6
D

<

r

a
⁢
1

<

2
.
1

⁢
D

6.
D

<

r

b
⁢
1

<

7
.4
D

;

 and
the second refraction surface satisfies

z
=

z
c

+

r

b
⁢
2

⁢

1
-

(

y

r

a
⁢
2

)

2

z
c

=

l
a

+
t
-

r

b
⁢
2

⁢

1
-

(

0.5
D

r

a
⁢
2

)

2

Assignees

• Nippon Telegraph & Telephone

Inventors

• Endo Jun
• Shikama Kota
• Aratake Atsushi

Classifications

• G02B6/305

  and having an integrated mode-size expanding section, e.g. tapered waveguide · CPC title

• G02B6/32

  having lens focusing means {positioned between opposed fibre ends (with lens being an integral part of the single fibre end G02B6/262)} · CPC title

• G02B3/04 Primary

  with continuous faces that are rotationally symmetrical but deviate from a true sphere {, e.g. so called "aspheric" lenses} · CPC title