Changchun Sunday Optics Co., Ltd., founded in 2013 and located in Changchun City—China renowned optical base—is a precision optical components manufacturer providing integrated capabilities in optical glass processing, coating, optical assembly, and optical design. Sunday Optics specializes in the production of spherical lenses, aspheric lenses, cylindrical lenses, optical prisms, high-precision windows, optical filters, optical mirrors, coatings, and laser lenses. The minimum lens size can reach 0.3 mm, while prism 90-degree angle tolerance can be controlled within 2″. With a strong focus on high-precision optics, surface roughness can be guaranteed down to 0.1 nm, meeting the stringent requirements of advanced optical applications.
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Preliminary Contact
Customers can contact the company through the contact information provided on the website.
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Product Selection
Customers can browse and select the desired products or services on the website
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Request for Quotation
After determining the required products or services, submit an inquiry form through the website
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Quotation and Negotiation
After receiving the inquiry, the company will provide a detailed quotation
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Place an Order
After confirming the quotation, place an order through website or offline methods
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Quality Control and Testing
Strictly implement quality control and testing to ensure that products meet the highest standards
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Shipping and Logistics
After the product is completed, arrange for shipment and provide logistics tracking information
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After-Sale Service
After product delivery, we will continue to provide after-sales service, including technical support and warranty services, to ensure customer satisfaction
June 24-27th,2025
Munich,Germany
April 22-24th,2026
Pacifico-Yokohama-Japan
June 24-27th,2025
Munich,Germany
Shanghai,China
March 18-20th,2026
Feb 02-04th 2026
Sands-expo and Convention CenterEqual-Radius vs. Unequal-Radius Bi-Convex Lenses
Choosing the right Spherical Lens is not simply a matter of selecting a larger diameter or shorter focal length. Designers comparing an equal-radius bi-convex lens, an unequal-radius bi-convex lens, and a custom solution from an optical spherical lens manufacturer must consider the radius of curvature, refractive index, and lensmaker’s equation.
2026-08-20
How Lens Diameter, Focal Length, and F-Number Affect Spot Size
When a focused beam produces a spot larger than expected, the cause is usually not mysterious: a Spherical Lens may have the wrong aperture, the focal length may not match the working distance, or diffraction may be limiting the result. This guide explains spherical lens spot size calculation, the relationship between lens diameter, focal length, a
2026-08-20
Germanium vs. Silicon vs. ZnSe: Choosing an Infrared Lens Material
Choosing the right infrared lens material affects image quality, system size, battery life, thermal stability, durability, and total ownership cost. Germanium, silicon, and zinc selenide, commonly called ZnSe, are all widely used for infrared optics, but they are not interchangeable.
2026-08-19