JP2011102906A5 - - Google Patents

Claims (10)

In an optical element in which three or more optical elements are joined and integrated,
Of the three or more optical elements, one of the optical elements in which two optical surfaces are in contact with other optical elements is composed of an organic composite layer, and in a cross section including the optical axis of the optical element, Of the optical elements constituting the optical element and the bonded surfaces obtained by bonding the optical elements, the maximum diameter of the bonding surface that does not include an object other than the adhesive is φs, and the optical axis of the organic composite layer at the maximum diameter φs Ti (i = 1, 2, 3,... N) (mm), and the water absorption elongation of the material of the organic composite layer is DLi (i = 1, 2, 3,... N) ( %)
Σ (Ti × DLi) <0.19 (mm)
An optical element characterized by satisfying the following condition. Of the three or more optical elements constituting the optical element, the length along the optical axis at the maximum diameter φs of the two optical elements whose optical surfaces on one side are exposed to gas is expressed as Tgn (n = 1), respectively. , 2) (mm)
Σ (Ti × DLi) / (Tg1 + Tg2) <0.025
The optical element according to claim 1, wherein the following condition is satisfied. Of the three or more optical elements constituting the optical element, the Young's modulus of two optical elements whose optical surfaces on one side are exposed to gas are set to Egn (n = 1, 2), respectively, and the organic composite layer When the Young's modulus of the material is Ei (i = 1, 2, 3,... N),
Σ {(Ti × DLi) × logEi} / {Tg1 × log (Eg1) + Tg2 × log (Eg2)} <0.0090
The optical element according to claim 1, wherein the following condition is satisfied. The organic composite layer is formed on the first optical element optical surfaces of the support side is exposed to the gas, the surface opposite to the first optical element of the organic composite layer is adhered The optical element according to any one of claims 1 to 3, wherein the optical element is bonded to the second optical element via an agent. When the outer diameter of the organic composite layer is φj,
φs <φj
The optical element according to claim 1, wherein the following condition is satisfied. When the refractive indices at the d-line of the material of the organic composite layer and the material of the adhesive are nr and ns, respectively, | nr−ns | <0.1
The optical element according to claim 1, wherein the following condition is satisfied. When the focal length in the air of the organic composite layer is f,
f> 0.0
The optical element according to claim 1, wherein the following condition is satisfied. When the anomalous partial dispersibility of the material of the organic composite layer is | ΔθgFr |
0.0272 <| ΔθgFr |
The optical element according to claim 1, wherein the following condition is satisfied.   An optical system comprising the optical element according to claim 1.   An optical apparatus comprising: the optical system according to claim 9; and a photoelectric conversion element that receives an image formed by the optical system.