Think Logically !!!!!!!!!!!!

There were two Logician in a train and were getting bored so Logician 1 gives a puzzle to the other.

Logician 1 :The sum of the age of my three sons is equal to the age of your only daughter

Logician 2 : So?

Logician 1 : And the product of the ages on my sons is equal to 36

Logician 2 : Then?

Logician 1 : What is the age of my three sons?

[After thinking for a while]

Logician 2 : Give me some more information.

Logician 1 : The eye color of my eldest son in blue

Logician 2 instantly gave the answer!

What is the ages of Logician 1's all three sons?