450nm Longpass Filter

Shandong Yanggu Constant Crystal Optics, Inc. was established in April 2006, located in Xiangguang economic development zone, Yanggu County, Shandong Province. We are specialized in researching, producing and saling optics and optical components. Our main products include optical window, prism, lens, beamsplitter, filter, wedge, blanks and etc. We also provide customized service according to customer’s requests. Our products are mainly used in camers, optical instruments, medical instruments, teaching instruments, slide projector, projector, UV analyser, finance tolls, lamp lights and etc. And especially serving the mational defence, aerospace, medical, biological scientific research colleges, public security and etc. our products are well trusted by the users Shandong Yanggu Constant Crystal Optics, Inc. is a trusted global supplier of high-quality optical components, proudly serving a diverse range of industries for over 20 years. Renowned for delivering premium optical products at competitive prices, we’ve built a strong reputation for reliability, precision, and value. Whether your business is in optical instrument manufacturing, medical research, military and aerospace technology, or consumer electronics, our expert team and state-of-the-art facilities are equipped to meet your exact specifications. Contact us today to learn how we can support your optical component requirements. Our advanced production facilities and cutting-edge equipment enable us to manufacture high-precision optical components tailored to your needs. We offer a comprehensive range of services, including design, prototyping, material selection and preparation, molding, grinding, polishing, coating, and rigorous inspection and testing — ensuring the highest quality at every stage. Why choose us? OEM and ODM Services Available We offer both OEM and ODM services, supported by our elite R&D team. Simply provide your design drawings, and we’ll handle the production — or let us assist with custom designs tailored to your requirements. ISO 9001:2015 Certified Our company is ISO 9001:2015 certified and adheres to the 6S management system. We prioritize quality in every aspect of our operations, continually enhancing product quality, workplace efficiency, and environmental standards through ongoing improvement initiatives. Professional Expertise Specializing in customized, precision-engineered glass optical products, we bring extensive experience and technical know-how to every project. We expertly manufacture a range of optical components, including cylindrical, aspherical, spherical, and flat/planar glass elements — and can also deliver fully processed and assembled lens components. Over 20 Years of Experience With more than two decades in the optical industry, we are well-equipped to address complex optical design and manufacturing challenges. Our team is committed to evolving our processes and capabilities to achieve superior results for our clients. Design for Manufacturing Support Our highly experienced engineering team offers valuable design-for-manufacturing input, helping customers enhance their optical systems through expert guidance in material selection, geometry, and tolerance optimization. Cost-Effective Solutions As a Precision Optics Solutions Provider, We deliver high-quality products and customized solutions with an outstanding price-performance ratio, making us a reliable and cost-effective partner for businesses of any size. High quality and customer’s satisfaction is our target. Welcome to every customer’s cooperation