Complex sentence: An optical train, also called an optical assembly, is an arrangement of lenses to guide a line of sight and/or a laser, for example, the position and angle of lenses may be adjusted to guide a laser through the path required.
Split into simpler sentences: An optical train, also called an optical assembly, is an arrangement of lenses to guide a line of sight and/or a laser. For example, the position and angle of lenses may be adjusted to guide a laser through the path required.