The invention relates to a
refraction and reflection type
large aperture and
large field of view imaging
system. The
refraction and reflection type
large aperture and
large field of view imaging
system is characterized in that a
refraction type correction plate, a reflection type
primary mirror and a refraction type correction mirror group are successively arranged along an
optical axis from the outside to the inside; the central area of the second surface of the correction plate is plated with a reflective
coating layer, and becomes a reflection type
secondary mirror; an incident
light beam irradiates to the reflection type
primary mirror through the refraction type correction plate; the reflection type
primary mirror reflects the incident
light beam to the reflection type
secondary mirror; and the reflection type
secondary mirror reflects the
light beam to the refraction type correction mirror group, and then the light beam passing through the refraction type correction mirror group is converged on a focal plane of an optical
system. The refraction and reflection type
large aperture and
large field of view imaging system sets the refraction type correction plate within the focus of a reflection type spherical main mirror and takes the central area of the second surface of the correction plate as the reflection type secondary mirror and the diaphragm, thus having the advantages of ultra-short lens
barrel and large
field of view, and being able to be widely applied to the
astronomy,
aviation, security and protection, and other photoelectric imaging fields. The refraction and reflection type large aperture and large
field of view imaging system can realize aberration reducing design for a 11DEG-15DEG
field of view. However, the field of view for a traditional refraction and reflection type imaging system is only 3DEG-4DEG.