| abstract |
Provided are a method and a material useful for simple production of an article having a birefringence pattern having high resolution and excellent heat resistance. A method for producing an article having a birefringence pattern including at least the following steps [1] to [3] in this order: [1] an optically anisotropic layer containing a polymer, the optical anisotropy The layer has a retardation disappearing temperature at which the in-plane retardation is 30% or less of the retardation at 20 ° C. in a temperature range higher than 20 ° C., and the retardation disappearing temperature is increased by exposure. A step of preparing a material; [2] a step of performing pattern exposure on the birefringence pattern builder; [3] a step of heating the laminate obtained after step 2 to 50 ° C. or higher and 400 ° C. or lower. [Selection] Figure 4 |