In the field of precision optics, a seemingly simple but crucial optical element - the meniscus lens is quietly promoting the development of many technologies. This lens with a special structure of concave and convex surfaces plays an irreplaceable role in laser processing, medical equipment, security monitoring and other fields with its unique optical properties.
The meniscus lens consists of a convex surface and a concave surface. The curvature radius is precisely calculated and can be divided into two types: positive meniscus lens and negative meniscus lens.
Its core features include:
1. Strong aberration correction ability: through the unique curved surface design, spherical aberration and coma are effectively reduced, and the imaging quality is improved.
2. Accurate optical path control: It can realize the convergence or divergence of the light beam and flexibly adjust the optical path layout.
3. Compact structure: Compared with the traditional lens combination, a single meniscus lens can achieve complex optical functions.
High-precision processing: computer numerical control (CNC) grinding technology is used, and the surface accuracy can reach λ/10@632.8nm.
Special coating process: anti-reflection film makes the transmittance exceed 99.5%, greatly reducing the loss of light energy.
Material diversification: optical glass, fused quartz and even infrared materials (such as Ge, ZnSe) can be selected to meet the needs of different bands.
1. Laser processing system
In fiber laser cutting equipment, negative meniscus lens is used for beam expansion and collimation, and cooperates with focusing lens to achieve high-precision processing. A certain brand of 30,000-watt laser cutting machine adopts this design to control the processing accuracy within ±0.03mm.
2. Medical endoscope
As a key component of the endoscope objective lens group, the positive meniscus lens has a compact structure to help realize the design of ultra-thin electronic mirrors with a diameter of only 2.8mm. With this technology, a domestic laparoscope has a field of view of 120°, which greatly improves surgical efficiency.
3. Security monitoring
Infrared thermal imagers use germanium meniscus lenses, which can still produce clear images at low temperatures of -20℃. The monitoring system equipped by a border defense force has a detection distance of 5 kilometers.
4. Virtual reality equipment
The optical module in VR glasses uses a combination of multiple meniscus lenses to reduce the thickness of the equipment to 1/3 of the traditional solution while maintaining a 100° field of view.
5. Astronomical observation
The correction mirror group of large astronomical telescopes often contains meniscus lenses to compensate for the aberration caused by atmospheric disturbances. The latest 1.2-meter telescope installed at an observatory in my country uses this design.
With the advancement of intelligent manufacturing and the miniaturization of optical systems, "this seemingly simple optical component is actually the 'behind-the-scenes hero' of many high-end equipment," an expert from an optical association commented, "its development level reflects a country's precision optics manufacturing capabilities to some extent."
In the field of precision optics, a seemingly simple but crucial optical element - the meniscus lens is quietly promoting the development of many technologies. This lens with a special structure of concave and convex surfaces plays an irreplaceable role in laser processing, medical equipment, security monitoring and other fields with its unique optical properties.
The meniscus lens consists of a convex surface and a concave surface. The curvature radius is precisely calculated and can be divided into two types: positive meniscus lens and negative meniscus lens.
Its core features include:
1. Strong aberration correction ability: through the unique curved surface design, spherical aberration and coma are effectively reduced, and the imaging quality is improved.
2. Accurate optical path control: It can realize the convergence or divergence of the light beam and flexibly adjust the optical path layout.
3. Compact structure: Compared with the traditional lens combination, a single meniscus lens can achieve complex optical functions.
High-precision processing: computer numerical control (CNC) grinding technology is used, and the surface accuracy can reach λ/10@632.8nm.
Special coating process: anti-reflection film makes the transmittance exceed 99.5%, greatly reducing the loss of light energy.
Material diversification: optical glass, fused quartz and even infrared materials (such as Ge, ZnSe) can be selected to meet the needs of different bands.
1. Laser processing system
In fiber laser cutting equipment, negative meniscus lens is used for beam expansion and collimation, and cooperates with focusing lens to achieve high-precision processing. A certain brand of 30,000-watt laser cutting machine adopts this design to control the processing accuracy within ±0.03mm.
2. Medical endoscope
As a key component of the endoscope objective lens group, the positive meniscus lens has a compact structure to help realize the design of ultra-thin electronic mirrors with a diameter of only 2.8mm. With this technology, a domestic laparoscope has a field of view of 120°, which greatly improves surgical efficiency.
3. Security monitoring
Infrared thermal imagers use germanium meniscus lenses, which can still produce clear images at low temperatures of -20℃. The monitoring system equipped by a border defense force has a detection distance of 5 kilometers.
4. Virtual reality equipment
The optical module in VR glasses uses a combination of multiple meniscus lenses to reduce the thickness of the equipment to 1/3 of the traditional solution while maintaining a 100° field of view.
5. Astronomical observation
The correction mirror group of large astronomical telescopes often contains meniscus lenses to compensate for the aberration caused by atmospheric disturbances. The latest 1.2-meter telescope installed at an observatory in my country uses this design.
With the advancement of intelligent manufacturing and the miniaturization of optical systems, "this seemingly simple optical component is actually the 'behind-the-scenes hero' of many high-end equipment," an expert from an optical association commented, "its development level reflects a country's precision optics manufacturing capabilities to some extent."
Trusted Optical Components Manufacturer
AOS Optics provides custom optical component processing from medium precision to ultra-high precision. From cutting, fine grinding, polishing, coating, to quality inspection before shipment, we complete them all in our own factory, truly providing you with one-stop service...
AOS Optics Co., Ltd
Tel: +86 189 4674 7897
E-mail: inquiry@aosoptic.com
Address: Yiju Road High-Tech Zone,Changchun City,
Jilin Province, China