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US 12,730,282 B2Granted
Optical module
AssigneeLG Innotek Co., Ltd.
InventorJae Wook Jung
Life of this patent
Estimating the term…
Abstract
A optical module according to an embodiment includes a sensor and an optical system including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged sequentially along the optical axis in the direction from the object side to the sensor side, at least one of the object side surface or the sensor side surface of the fourth lens includes a freeform surface.
Claims20
An optical module comprising:
- a sensor;
- and
- an optical system comprising a first lens, a second lens, a third lens, a fourth lens, and a fifth lens arranged sequentially along an optical axis from an object side to a sensor side,
- wherein at least one of an object side surface or a sensor side surface of the fourth lens comprises a freeform surface,
- wherein the third lens and the fifth lens satisfy Equation 23 below:
- max
-
- ❘
- "\[LeftBracketingBar]"
- SA_O
-
- _
-
- 5
- ❘
- "\[RightBracketingBar]"
- <
- max
-
- ❘
- "\[LeftBracketingBar]"
- SA_O
-
- _
-
- 3
- ❘
- "\[RightBracketingBar]"
- ,
- max
-
- ❘
- "\[LeftBracketingBar]"
- SA_S
-
- _
-
- 5
- ❘
- "\[RightBracketingBar]"
- >
- max
-
- ❘
- "\[LeftBracketingBar]"
- SA_S
-
- _
-
- 3
- ❘
- "\[RightBracketingBar]"
- ,
- max
-
- ❘
- "\[LeftBracketingBar]"
- SA_O
-
- _
-
- 3
- ❘
- "\[RightBracketingBar]"
- <
- 35
-
- °
- ,
- max
-
- ❘
- "\[LeftBracketingBar]"
- SA_S
-
- _
-
- 3
- ❘
- "\[RightBracketingBar]"
- >
- 60
-
- °
- [
- Equation
-
- 23
- ]
- (In Equation 23, max |SA_O_3| means a maximum angle of inclination between a normal line and the optical axis at any point on an object side surface of the third lens in a distance range from the optical axis of the third lens to an effective diameter, max |SA_S_3| means a maximum angle of inclination between a normal line and the optical axis at any point on a sensor side surface of the third lens in the distance range from the optical axis of the third lens to an effective diameter, max |SA_O_5| means a maximum angle of inclination between a normal line and the optical axis at any point on an object side surface of the fifth lens in the distance range from the optical axis of the fifth lens to an effective diameter, max |SA_S_5| means a maximum angle of inclination between a normal line of a sensor side surface of the fifth lens and the optical axis at any point in the distance range from the optical axis of the fifth lens to the effective diameter).
87 more elements
An optical module, comprising:
- a sensor;
- and
- an optical system comprising a first lens, a second lens, a third lens, a fourth lens, and a fifth lens arranged sequentially along an optical axis from an object side to a sensor side,
- wherein at least one of an object side or a sensor side of the fourth lens comprises a freeform surface, and
- wherein the fourth lens and the fifth lens satisfy Equation 26 below:
- P_
-
- 4
-
- sign
- ≠
- P_
-
- 5
-
- sign
- ,
- V_
-
- 5
- >
- V_
-
- 4
- ,
- 10
- <
- V
-
- 4
- <
- 50
- <
- V
-
- 5
- ,
- [
- Equation
-
- 26
- ]
- N_
-
- 5
- <
- N_
-
- 4
- (In Equation 26, P_4 sign is a refractive power sign of the fourth lens having a positive (+) or negative (−) sign, P_5 sign is a refractive power sign of the fifth lens having a positive (+) or negative (−) sign, V_4 is an Abbe number of the fourth lens, V_5 is an Abbe number of the fifth lens, N_4 is a refractive index of the fourth lens, and N_5 means a refractive index of the fifth lens).
47 more elements
Dependencies are inferred from the claim text.