Provided is an optical element that has at least a first optical component, a third optical component. A surface of the second optical component facing the first optical component has a convex shape and a surface of the third optical component facing the second optical component has a concave shape. At least one of the first optical component and the second optical component and the second optical component and the third optical component are bonded by an adhesive layer. The condition 0.2≤Ead2/Ead1≤0.5 is satisfied, where Ead1 is an elastic modulus of the adhesion layer at 20 degrees Celsius and Ead2 is an elastic modulus of the adhesion layer at 60 degrees Celsius. The condition of 0.25≤α1/α3