N-BK7 SF11 Optical Glass Achromatic Doublet for High-Resolution Photography

N-BK7 SF11 Optical Glass Achromatic Doublet for High-Resolution Photography

1. Material

   • ‌Composition‌: The N-BK7/SF11 Achromatic Doublet is composed of two types of optical glass: N-BK7 and SF11.
     • ‌N-BK7‌: A type of borosilicate crown glass with high transmittance in the visible and near-infrared spectrum.
     • ‌SF11‌: A type of flint glass known for its ability to correct chromatic aberrations in combination with crown glass.

   Property

   • ‌Refractive Index‌: Each glass type has a distinct refractive index, which allows for the dispersion of light to be managed and corrected.
     • ‌N-BK7‌: Typically has a refractive index of around 1.516 at 587.6 nm.
     • ‌SF11‌: Typically has a higher refractive index compared to N-BK7, aiding in the correction of chromatic aberrations.
   • ‌Dispersion‌: The combination of N-BK7 and SF11 glasses is specifically chosen to minimize dispersion, ensuring that light of different colors focuses to a common point.
   • ‌Durability‌: Both glasses are resistant to thermal shock and chemical attack, ensuring longevity and stability in various environments.

   Function

   • ‌Achromatic Correction‌: The doublet design utilizes the different refractive indices and dispersions of N-BK7 and SF11 glasses to correct for chromatic aberrations. This results in images that are free from color fringes and have high color fidelity.
   • ‌High Resolution‌: The precise manufacturing and optical properties of the doublet enable it to produce high-resolution images with sharp detail and clarity.
   • ‌Focal Length and Aperture‌: The doublet can be designed with various focal lengths and apertures to suit different photographic needs, from wide-angle to telephoto applications.

   Application

   • ‌High-Resolution Photography‌: Ideal for use in professional photography where high resolution and color accuracy are critical, such as portrait photography, landscape photography, and scientific imaging.
   • ‌Telescopes and Binoculars‌: The achromatic doublet can be used in telescopes and binoculars to produce clear, high-contrast images with minimal chromatic aberration.
   • ‌Machine Vision and Imaging Systems‌: Suitable for machine vision and imaging systems that require precise color rendition and high spatial resolution.

Introduction

Shanghai Longway Special Glass Co., Ltd. has been a professional supplier in the glass industry for over 20 years. With its expertise spanning across various fields, including optics, laser, imaging, and lighting etc., the company has established itself as a trusted partner for businesses worldwide. The company's commitment to providing high-quality glass products and services has earned it a reputation as a reliable supplier of choice among major corporations and small businesses alike.

Our Team

The team at Shanghai Longway Special Glass Co., Ltd. consists of professional experts with extensive experience in the field of glass manufacturing. These skilled technicians have honed their expertise through years of hands-on training and continuous education, ensuring that they remain up-to-date on the latest techniques and technologies.

Our Capabilities

Shanghai Longway Special Glass Co., Ltd.'s capabilities include:

Cutting: Advanced cutting equipment allows for precise cuts in a variety of glass types.

Grinding: High-speed grinding machines enable efficient surface preparation.

Polishing: Automated polishing systems guarantee exceptional optical clarity.

Molding: Sophisticated molding techniques permit the creation of intricate shapes and designs.

Blowing: Expertise in blow-and-form processing enables the production of hollow glass products, such as bottles and jars.

Tempering: Heat-treating equipment ensures that glass products meet or exceed industry standards for thermal shock resistance.

Our Raw Materials

The company offers a wide range of raw materials and processed glass products, normally including:

Optical Glass: High-quality optical glass suitable for precision applications.

Borosilicate Glass: Durable borosilicate glass ideal for laboratory equipment and medical devices.

Quartz Glass: Pure quartz glass utilized in various industries, including electronics and optics.

Float Glass: Large sheets of float glass suitable for architectural applications and flat glass products.

Soda Lime Glass: Economical soda lime glass used for a wide range of industrial and commercial applications.

Our Quality Control Process

At Shanghai Longway Special Glass Co., Ltd., quality control is an integral part of the manufacturing process. Each product undergoes rigorous inspection to ensure that it meets or exceeds customer expectations. This commitment to excellence has earned the company a reputation as a trusted supplier of high-quality glass products.

Our Commitment to Excellence

At Shanghai Longway Special Glass Co., Ltd., we are committed to delivering exceptional quality glass products that meet or exceed customer expectations. Our team of professional experts is dedicated to providing expert advice and assistance in selecting the most suitable materials and processing techniques for specific needs. We take pride in our state-of-the-art facility, equipped with cutting-edge machinery and technology, ensuring that every product meets the highest standards.

Why Choose Us?

Shanghai Longway Special Glass Co., Ltd. is a trusted supplier of high-quality glass products, committed to delivering exceptional quality, innovation, and customer satisfaction. With over 20 years of experience and expertise spanning across various fields, we are well-positioned to meet the evolving needs of businesses worldwide. We look forward to serving your needs and meeting your expectations.