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US 12,591,112 B2Granted
Optical imaging system
AssigneeAAC Optics (Changzhou) Co., Ltd.
InventorTakaaki Teranishi
Life of this patent
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AssigneeAAC Optics (Changzhou) Co., Ltd.
InventorTakaaki Teranishi
Estimating the term…
The present disclosure discloses an optical imaging system satisfying: 0.38≤f10-12/f≤0.90, −21.70≤f7-8/(d13+d15)≤−1.00, 2.00≤d17/d18≤10.00, and 1.00≤ (d1+d3)/d23′≤5.00, where f denotes a focal length of the optical imaging system; f10-12 denotes a combined focal length of the tenth lens, the eleventh lens and the twelfth lens; f7-8 denotes a combined focal length of the seventh lens and the eighth lens; d1 and d3 denotes an on-axis thickness of the first and second lens; d23′ denotes an on-axis distance from the second lens to the third lens; d13, d15 and d17 denotes an on-axis thickness of the seventh, eighth, and ninth lens; and d18 denotes an on-axis distance from the ninth lens to the tenth lens. The optical imaging system of the present disclosure has good optical performance, variable aperture and low distortion, and can change the depth of field during measurement.
An optical imaging system comprising, from an object side to an image side:
Dependencies are inferred from the claim text.