Product Case Studies

Spherical lenses are used to improve signal coupling between optical fibers, transmitters, and detectors, enhance signal quality, and can also be applied to endoscopy, barcode scanning, pre-processing materials for non spherical lenses, sensors, etc. The focal length behind the spherical lens is short, which can greatly reduce the distance required from the spherical lens to the optical fiber.

Spherical lenses can be divided into plano convex lenses (PCX), plano concave lenses (PCV), biconvex lenses (DCX), biconcave lenses (DCV), meniscus lenses, plano convex cylindrical lenses, circular cylindrical lenses, non spherical lenses, achromatic lenses, double bonded lenses, triple bonded lenses, etc. according to their shape and function. Lenses have the functions of converging light rays, diverging light rays, and beam shaping in the optical path. Plano convex lenses (PCX)/biconvex lenses (DCX) converge light rays; Flat concave lens (PCV)/double concave lens (DCV) will diverge light rays; Non spherical lenses have the same function as double bonded lenses or lens groups in the optical path, and can correct axial aberrations such as spherical aberration, chromatic aberration, etc; Achromatic lenses have the function of correcting chromatic aberration. Maipu Optoelectronics can provide lenses made of optical glass materials (such as K9, BK7, B270, etc.) used in the visible spectrum band, and lenses made of optical crystal materials (such as zinc selenide, zinc sulfide, calcium fluoride, fused silica, etc.) used in the near-infrared/infrared/ultraviolet spectrum band. These lenses are widely used in optical imaging, laser detection, optical communication, life science, optical lighting and other related fields. Maipu Optoelectronics can customize various optical lenses and coatings for you according to your application needs.

Convex lens (converging lens)

A convex lens has both sides protruding outward, or one flat surface and one convex surface, which can focus the incident parallel light rays on the other side of the lens. Therefore, convex lenses are also known as positive lenses. Convex lenses are commonly used in imaging systems to converge light and form real or virtual images, such as in magnifying glasses, glasses, camera lenses, and other devices.

Concave lens (divergent lens)

A concave lens has concave surfaces on both sides, or one flat surface and one concave surface, which causes the incident parallel light rays to diverge as if they were coming from a virtual focal point on one side of the lens. Therefore, concave lenses are also known as negative lenses. Concave lenses are commonly used in optical systems to diffuse light, improve the field of view and image quality of imaging systems, such as in glasses for correcting farsightedness.

Main characteristics

• focal length：The distance at which a lens focuses parallel light rays on a point is called the focal length, with convex lenses having a positive focal length and concave lenses having a negative focal length.
• imaging：According to the degree of convergence or divergence of light passing through a lens, the lens can produce a real or virtual image, depending on the relative position of the object and the lens.
• magnification：The size change of the image formed by a lens on an object is called magnification, which is related to the distance between the object and the lens.

application area

Spherical lenses have a wide range of applications in many fields due to their simple and effective optical properties:

• Imaging system：In imaging devices such as cameras, microscopes, telescopes, etc., spherical lenses are used to focus light and form clear images.
• optical instrument：In precision instruments such as spectrometers and optical measuring equipment, spherical lenses are used to control and adjust the propagation of light beams.
• Orthoptics：In glasses and contact lenses, different types of spherical lenses are used to correct visual defects based on individual vision conditions.
• laser technology：In laser systems, spherical lenses are used to focus or diffuse laser beams to meet specific application requirements.

note

• chromatism：Due to the different refractive indices of light with different wavelengths, spherical lenses may produce chromatic aberration during imaging. To reduce chromatic aberration, a combination of achromatic lenses or non spherical lenses can be used.
• spherical aberration：Spherical lenses are unable to perfectly focus all incident light rays on one point, a phenomenon known as spherical aberration. Spherical aberration can be reduced by using non spherical lenses or multi lens systems.

conclusion

Spherical lens is one of the most fundamental and important components in optical design, and its simple design and versatility make it play an irreplaceable role in optical systems.