US 2026/0277083 A1 · LENS ADAPTER DEVICE, MOBILE PHONE PROTECTIVE CASE, AND HIGH-DEFINITION MOBILE PHONE PHOTOGRAPHY SYSTEM

Abstract

A lens adapter device for a mobile phone high-definition photography system is provided. The mobile phone high-definition photography system includes a mobile phone protective case for mounting a mobile phone. The lens adapter device includes a lens barrel, a first lens unit disposed within the lens barrel, and a second lens unit disposed within the lens barrel and spaced apart from the first lens unit. The lens barrel has a first end and a second end opposite each other. The first end is configured to detachably connect to a camera lens, and the second end is configured to detachably connect to the mobile phone protective case. An object-side surface of the first lens unit is planar, and an image-side surface of the first lens unit is convex. An object-side surface of the second lens unit is planar, and an image-side surface of the second lens unit is concave.

Claims20

Dependent claims

A lens adapter device for a mobile phone high-definition photography system, the mobile phone high-definition photography system comprising a mobile phone protective case for mounting a mobile phone, and the lens adapter device comprising:

a lens barrel having a first end and a second end opposite each other, the first end being configured to detachably connect to a camera lens, and the second end being configured to detachably connect to the mobile phone protective case;
a first lens unit disposed within the lens barrel, an object-side surface of the first lens unit being planar, and an image-side surface of the first lens unit being convex;
and
a second lens unit disposed within the lens barrel and spaced apart from the first lens unit, an object-side surface of the second lens unit being planar, and an image-side surface of the second lens unit being concave.

1 more element

A lens adapter device, comprising a lens barrel and a lens group disposed within the lens barrel, the lens group comprising a first lens group, a second lens group, a third lens group, a fourth lens group, and a fifth lens group sequentially arranged along an optical axis from an object side to an image side of the lens barrel;

wherein,
the first lens group has a negative optical power, and an image-side surface of the first lens group is concave;
the second lens group has a negative optical power, an object-side surface and an image-side surface of the second lens group are both concave;
the third lens group has a positive optical power, an object-side surface of the third lens group is concave, and an image-side surface of the third lens group is convex;
the fourth lens group has a negative optical power, an object-side surface of the fourth lens group is concave, and an image-side surface of the fourth lens group is spherical;
and
the fifth lens group has a negative optical power, an object-side surface of the fifth lens group is convex, and an image-side surface of the fifth lens group is concave;
wherein a focal length of the lens adapter device is recorded as f, an effective focal length of the second lens group is recorded as f2, an effective focal length of the third lens group is recorded as f3, and an effective focal length of the fourth lens group is recorded as f4;
the following relationships are satisfied:
0
.1
<
❘
"\[LeftBracketingBar]"
f
/
f
⁢
2
❘
"\[RightBracketingBar]"
<
0.3
;
0.4
<
❘
"\[LeftBracketingBar]"
f
/
f
⁢
3
❘
"\[RightBracketingBar]"
<
0.6
;
and
0.03
<
❘
"\[LeftBracketingBar]"
f
/
f
⁢
4
❘
"\[RightBracketingBar]"
<
0.
0
⁢
6
.

53 more elements

A lens adapter device, comprising a first lens group, a second lens group, a third lens group, a fourth lens group, and a fifth lens group sequentially arranged along an optical axis of the lens adapter device from an object side to an image side of the lens adapter device;

wherein,
the first lens group comprises a first lens and a second lens;
wherein each of the first lens and the second lens has a negative optical power;
an image-side surface of the first lens is convex in a paraxial region;
an object-side surface and an image-side surface of the second lens are both concave in the paraxial region;
the second lens group comprises a third lens and a fourth lens;
wherein each of the third lens and the fourth lens has a negative optical power;
an object-side surface and an image-side surface of the third lens are both concave in the paraxial region;
an image-side surface of the fourth lens is convex in the paraxial region;
the third lens group comprises a fifth lens and a sixth lens;
wherein each of the fifth lens and the sixth lens has a negative optical power;
an object-side surface and an image-side surface of the fifth lens are both concave in the paraxial region;
an object-side surface and an image-side surface of the sixth lens are both spherical in the paraxial region;
the fourth lens group comprises a seventh lens, an eighth lens, a ninth lens, and a tenth lens;
wherein each of the seventh lens, the eighth lens, the ninth lens, and the tenth lens has a positive optical power;
an object-side surface of the seventh lens is convex in the paraxial region;
an object-side surface and an image-side surface of the eighth lens are both concave in the paraxial region;
an object-side surface and an image-side surface of the ninth lens are both concave in the paraxial region;
an object-side surface and an image-side surface of the tenth lens are both convex in the paraxial region;
and
the fifth lens group comprises an eleventh lens and a twelfth lens;
wherein each of the eleventh lens and the twelfth lens has a positive optical power;
an object-side surface of the eleventh lens is convex in the paraxial region;
an object-side surface of the twelfth lens is spherical in the paraxial region, and an image-side surface of the twelfth lens is concave in the paraxial region;
wherein an effective focal length of the lens adapter device is recorded as f10, an effective focal length of the first lens group is recorded as f11, an effective focal length of the second lens group is recorded as f12, an effective focal length of the third lens group is recorded as f13, and an effective focal length of the fourth lens group is recorded as f14;
the following relationships are satisfied:
140
<
f
⁢
11
/
f
⁢
10
<
150
;
7.5
<
f
⁢
12
/
f
⁢
10
<
8.5
;
4.2
<
f
⁢
13
/
f
⁢
1
⁢
0
<
4.8
;
and
270
<
f
⁢
14
/
f
⁢
1
⁢
0
<
2
⁢
9
⁢
0
.

80 more elements

Dependencies are inferred from the claim text.

Lens adapter device, mobile phone protective case, and high-definition mobile phone photography system

Life of this patent

Lens adapter device, mobile phone protective case, and high-definition mobile phone photography system

Life of this patent

Abstract

Claims20