Technology / product information

The "Bi-Concave Lens" has concave surfaces on both sides, excelling in its ability to diffuse light. With a negative focal length, this lens is used in optical systems requiring image reduction and light divergence. Compared to Plano Concave lenses, it offers stronger light divergence, making it particularly suitable for finite optical systems and illumination systems.

SUGITOH OPTICAL (THAILAND) CO., LTD., based in Samut Sakhon, Thailand, provides high-quality optical components. Leveraging advanced Japanese technology, the company manufactures products that meet diverse needs both domestically and internationally.

■ Features
・Designed with a negative focal length for light divergence and image reduction
・High-precision design for easy optical system adjustments
・Strong light-diffusion capability, ideal for finite optical systems
・Customizable: anti-reflection coatings available
・High durability: beveled edges for protection

■ Specifications
・Material: B270, BK-7
・Refractive Index: 1.523/nd (B270), 1.51680/nd (BK-7)
・Design Wavelength: 587.6nm
・Dimensions: Diameters from 5mm to 100mm
・Tolerances:
Diameter: +0mm/-0.1mm
Center Thickness: ±0.2mm
Focal Length: ±2%
Decentration: Within 3' (arc minutes)
・Surface Quality: MIL 60-40 standard

■ Applications
・Optical systems for telescopes and binoculars
・Illumination systems
・Laser and camera systems
・Door scopes and flashlights

About SUGITOH OPTICAL (THAILAND) CO., LTD.Based in Samut Sakhon, Thailand, the company is a globally trusted provider of optical component design, manufacturing, and supply. It delivers high-quality lens solutions tailored for research, development, and industrial optical systems to meet diverse customer needs.

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