Royan

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About Royan

CLZ Optical Co., Ltd. is one of China leading optical manufacturing companies. We manufacture a wide range of optical components for many different fields like Industrial Laser, Consumer products, Environmental Monitoring, Photography and Aerospace and R&D. We were established in early 2012 in China�s Optical Manufacturing hub of Changchun.

Physical Characteristics and Basic Structure

Royan25 Feb, 2026Astrology

The basic structure of a ‌meniscus lens presents an asymmetric shape with one side convex and one side concave, which causes specific refraction and focusing effects of light passing through the ‌meniscus lens. The difference between the optical center thickness and edge thickness, as well as the curvature radii of the convex and concave surfaces, collectively determine the optical performance of the meniscus lens.

Double-Concave Lenses, Bi-concave Lenses

Royan25 Feb, 2026Business

This distinct shape—visually recognizable by its inward-curving faces—directly governs their unique optical behavior in diverging light rays. The defining characteristic of Double-Concave Lenses lies in their ‌geometric profile‌: thinner at the optical center and progressively thicker toward the periphery, enabling precise control over light divergence and beam spreading in optical systems.

Bi-Convex Lenses, CLZ Optical Co., Ltd

Royan25 Feb, 2026Business

CLZ Optical Co. Provides standard catalog of double convex lenses made of various materials (such as optical glass, fused quartz, etc.) and specifications, and provides custom processing of Bi convex lenses according to customer drawings or specifications, which can be processed and coated with precision according to customer requirements.

Plano-Concave Lenses,

Royan25 Feb, 2026Business

CLZ Optical Co., Ltd. provides a variety Catalog of Plano Concave Lenses product. These stand plano concave can be widely used in optical beam shaping, beam expanders, laser cutting, projection systems and optical detection laser applications. In addition to the Plano concave lens in the catalog, CLZ Optical provides customized lenses according to the customer's drawings or specifications. Materials include optical glass, fused silica, fluoride, silicon, etc.

Plano-Convex Lenses,

Royan25 Feb, 2026Business

CLZ Optical Co.Ltd. provides catalog of optical componments for various applications, including plano convex lenses made of N-BK7 and fused silica. They are suitable for different types of optical systems. Flat convex lenses are generally suitable for optical systems with light collimation or monochromatic illumination, such

Concave (Focusing ) Mirrors are often used in applications

Royan14 May, 2025Business

Concave (Focusing ) Mirrors are often used in applications that require light collection. The reflective surface bend inwards to focus light toward the inner focal point. When the parallel light shines on concave mirrors. It reflects on the focal point in front of the mirror through its reflection. The reflective surface is the concave surface.

Dense Flint Glass is referred to as ZF glass

Royan14 May, 2025Games

Dense Flint Glass is referred to as ZF glass. It has the characteristics of high refraction and high dispersion. The density is great. It is the glass with the highest lead content in the Na2O-K2O-PbO-SiO2 system, and the mass fraction of PbO is greater than 55%. Because of its high lead content, this type of glass can be used as a radiation protection glass in addition to being used as a material for optical parts

Plano (Flat) mirrors are Optical Mirrors

Royan14 May, 2025Entertainment

Plano (Flat) mirrors are Optical Mirrors designed for a variety of applications, with a flat reflection surface. If an optical system can form a perfect image with random wide beam in any large space, namely, any concentric beam can still be kept as a concentric beam after passing through the system, then this system is an ideal optical system.

Flinting Glass is referred to as F glass

Royan14 May, 2025Business

The narrowly defined flint glass belongs to the Na2O-K2O-PbO-SiO2 system, and the mass fraction of PbO is between 40% and 55%. The refractive index and density increase with the increase of PbO content. Mainly used as a material for optical parts in optical instruments, such as Spherical Lenses and Cylindrical lenses.

Coating Witness Samples

Royan27 May, 2024Event/Party Planner

Coating Witness Samples is measurement of coating stresses on substrates. Often the material is the same as the finished product' substrate material and is almost always made to 25mm or 1? (25.40mm dia) in thickness of 1mm to 3mm with both sides polished or one side polished.