抄録
It is necessary to evaluate each displacement of optical components in an optical pickup to improve read/write characteristics at various environmental temperatures.Conventionally,we calculated thermal deformation of the optical pickup by CAE analysis and estimated the displacements of the optical components.In this paper,we visualized thermal deformation of the optical pickup using a Digital Image Correlation method.As a result,it was revealed that the displacements of the optical components occurred by anisotropic deformation of the resin housing and thermal expansion of the adhesive to tie between optical component and housing.
