Lens and lens assembly
A lens includes a lens unit, an intermediate layer disposed on one surface of the lens unit, a first coating layer including a UV improving additive and disposed on one surface of the intermediate layer, and a second coating layer including a water repellent and disposed on one surface of the first coating layer.
1 . A lens comprising:
a lens unit;
an intermediate layer disposed on one surface of the lens unit;
a first coating layer comprising a UV absorbing additive and disposed on one surface of the intermediate layer; and
a second coating layer comprising a water repellent and disposed on one surface of the first coating layer,
wherein a thickness of the first coating layer is 10 nm or less, and
wherein the first coating layer is not provided on a portion of the one surface of the intermediate layer and the second coating layer is in contact with the one surface of the intermediate layer.
2 . The lens of claim 1 , wherein the intermediate layer is an Anti-Reflective (AR) coating layer.
3 . The lens of claim 1 , wherein a thickness of the first coating layer is 1 to 10 nm.
4 . The lens of claim 1 , wherein a thickness of the first coating layer is less than a thickness of the second coating layer.
5 . The lens of claim 1 , wherein the UV absorbing additive of the first coating layer comprises a UV absorber, an antioxidant, and a light stabilizer.
6 . The lens of claim 5 , wherein the UV absorbing additive further includes inorganic particles, and the inorganic particles include at least one selected from the group consisting of CeO 2 , ZnO, TiO 2 , and WO 3 .
7 . The lens of claim 1 , wherein the intermediate layer includes at least one material layer selected from the group consisting of siloxane, SiO 2 , SiON, Si 3 N 4 , TiO 2 , TiON, and TiN.
8 . The lens of claim 1 , wherein the intermediate layer includes a multilayer structure in which a first layer and a second layer having different refractive indices are alternately stacked one or more times.
9 . A portable electronic device comprising:
a lens assembly comprising the lens of claim 1 ; and
a printed circuit board (PCB) configured to convert an image of an object formed at the imaging plane of the lens assembly into an electrical signal.
10 . A lens assembly comprising:
one or more lenses,
wherein at least one lens of the one or more lenses comprises a lens unit, an intermediate layer disposed on one surface of the lens unit, a first coating layer comprising a UV absorbing additive and disposed on one surface of the intermediate layer, and a second coating layer comprising a water repellent and disposed on one surface of the first coating layer, and
wherein a thickness of the first coating layer is less than a thickness of the second coating layer.
11 . The lens assembly of claim 10 , wherein the at least one lens is disposed on an outermost side of the lens assembly among the one or more lenses in an optical axis direction.
12 . The lens assembly of claim 10 , wherein the at least one lens is disposed on an outermost side of the lens assembly in an optical axis direction of the at least one lens.
13 . A portable electronic device comprising:
the lens assembly of claim 10 ; and
a printed circuit board (PCB) configured to convert an image of an object formed at the imaging plane of the lens assembly into an electrical signal.
14 . The portable electronic device of claim 13 , further comprising a display unit configured to display an image based on the electrical signal,
wherein the lens assembly is covered by the display unit.
15 . The portable electronic device of claim 13 , further comprising a tempered glass,
wherein the lens assembly is covered by the tempered glass.