並前往https://books.google.com.tw/books?id=e3WcDwAAQBAJ&pg=PR7&lpg=PR7&dq=edmund+aspheric+lens&source=bl&ots=WycT7lf1LX&sig=ACfU3U0vFZv_jXbD_grfs8pm1uwPF05Xxg&hl=zh-TW&sa=X&ved=2ahUKEwjqgvmOqrL5AhW8gv0HHVisAJ0Q6AF6BAhvEAM