How were the Sun's rays used to illuminate Ram Lalla idol's forehead today?

Ram Lalla idol's 'Surya Tilak' took place at 12.16 pm today. The 'Surya Abhishek' was performed using an optomechanical system. Sun rays initially fell on a high-quality mirror installed on the temple's top floor, then with the help of three lenses, they were directed to another mirror on second floor. It then finally fell on Ram Lalla's forehead.