1 results about "Pentagonal prism" patented technology

This invention belongs to the field of telescope manufacturing technology and discloses a binocular optical system with a large field of view and low edge distortion. Its features include: a first objective lens, a second objective lens, a third objective lens, a focusing lens, a semi-pentagonal prism, a roof prism, a first eyepiece lens, a second eyepiece lens, a third eyepiece lens, a fourth eyepiece lens, a fifth eyepiece lens, and a sixth eyepiece lens arranged sequentially from the object side to the image side along the optical axis. The telescope optical system has a magnification of 8x, an exit pupil distance of 20.90mm, an exit pupil diameter of 5.037mm, and a field of view of 9°.