An optical laminate, comprising: an optical functional layer; and a cover layer formed on the top of the optical functional layer, wherein the optical functional layer is a polarizing layer or a retardation layer, wherein the cover layer comprises at least one hard coat layers and a glass layer, wherein the hard coat layer comprises a polyorganosiloxane compound having an average unit of the following Formula F, and wherein the glass layer comprises a silica network and a nitrogen atom, wherein the silica network is formed of one or more units selected from the group consisting of units of the following formulae A and B, wherein the glass layer does not contain a linkage (Si-N) of the nitrogen and the silicon atom, wherein a ratio of the silica network in the glass layer is 85 weight% or more and a ratio of the nitrogen atom in the glass layer is from 0.0001 to 6 weight% as measured by X-ray photoelectron spectroscopy: [Formula A] R n SiO (4-n)/2 [Formula B] SiO 3/2 L 1/2 wherein, R is hydrogen, an alkyl group, an alkenyl group, an aryl group, an arylalkyl group, an epoxy group or a (meth)acryloyloxyalkyl group, n is 0 or 1, and L is an alkylene group, [Formula F] (R 1 3 SiO 1/2) a (R 2 2 SiO 2/2) b (R 3 SiO 3/2) c (SiO 4/2) d (RO 1/2) e wherein R 1 to R 3 are each independently a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or a cation curable functional group, at least one of R 1 to R 3 is a cation curable functional group, R is a hydrogen atom or an alkyl group, and when the sum of a, b, c and d is converted into 1, c/(a + b + c + d) is a number of 0.7 or more, and e/(a + b + c + d) is a number in a range of 0 to 0.4. an optical functional layer; and a cover layer formed on the top of the optical functional layer, wherein the optical functional layer is a polarizing layer or a retardation layer, wherein the cover layer comprises at least one hard coat layers and a glass layer, wherein the hard coat layer comprises a polyorganosiloxane compound having an average unit of the following Formula F, and wherein the glass layer comprises a silica network and a nitrogen atom, wherein the silica network is formed of one or more units selected from the group consisting of units of the following formulae A and B, wherein the glass layer does not contain a linkage (Si-N) of the nitrogen and the silicon atom, wherein a ratio of the silica network in the glass layer is 85 weight% or more and a ratio of the nitrogen atom in the glass layer is from 0.0001 to 6 weight% as measured by X-ray photoelectron spectroscopy: [Formula A] R n SiO (4-n)/2 [Formula B] SiO 3/2 L 1/2 wherein, R is hydrogen, an alkyl group, an alkenyl group, an aryl group, an arylalkyl group, an epoxy group or a (meth)acryloyloxyalkyl group, n is 0 or 1, and L is an alkylene group, [Formula F] (R 1 3 SiO 1/2) a (R 2 2 SiO 2/2) b (R 3 SiO 3/2) c (SiO 4/2) d (RO 1/2) e wherein R 1 to R 3 are each independently a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or a cation curable functional group, at least one of R 1 to R 3 is a cation curable functional group, R is a hydrogen atom or an alkyl group, and when the sum of a, b, c and d is converted into 1, c/(a + b + c + d) is a number of 0.7 or more, and e/(a + b + c + d) is a number in a range of 0 to 0.4.