Prime lens

• Main Authors: ZHAI LINYAN, CHENG JIAJIAN, LIANG WEICHAO, YING YONGMAO
• Format: Patent
• Language: Chinese; English
• Published: 27.12.2022
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

The utility model relates to a prime lens, which is arranged along an optical axis in a direction from an object side to an image side. The utility model relates to a multi-lens zoom lens, which sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with positive focal power, a fifth lens with negative focal power, a sixth lens with positive focal power, a seventh lens with positive focal power, an eighth lens with negative focal power and a ninth lens with positive focal power, the third lens and the fourth lens are aspheric lenses, and the seventh lens is a spherical lens; the prime lens further comprises a diaphragm, and the diaphragm is located between the third lens and the fourth lens or between the fourth lens and the fifth lens. The prime lens has the performance of high resolution, low cost, miniaturization, ultra-large aperture and infrared confocal performance, is clear in imaging in a temperature