A 3-county, 5-piece configuration without using a barlow lens! Especially recommended for binocular users.
We would like to introduce the 'Masuyama 20mm 85°' handled by Oi Koki. It features a 3-group, 5-element design without using a barlow lens. With fewer lens elements, it has a full multi-coating on the air surfaces, resulting in excellent light transmission. It is particularly recommended for binocular users, with a barrel diameter of 58mm, and it also comes with a rubber eyepiece. 【Features】 ■ 3-group, 5-element design without using a barlow lens ■ Fewer lens elements ■ Full multi-coating on the air surfaces for excellent light transmission ■ Barrel diameter of 58mm, with a rubber eyepiece included *For more details, please refer to the related links or feel free to contact us.
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【Specifications】 ■Focal Length (f): 20mm ■Apparent Field of View: 85° ■Eye Relief (ER): Approximately 12.5mm ■Body Size (Diameter × Height): Approximately Φ58 × 90mm ■Weight (g): Approximately 304g ■Sleeve Size: 2 inches (Φ50.8) ■Coating: Fully Multi-Coated *For more details, please refer to the related links or feel free to contact us.
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For more details, please refer to the related links or feel free to contact us.
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At Oi Optical Co., Ltd., we leverage our 65 years of experience to process optical components such as lenses and mirrors, ranging from small to large diameters. We handle everything from lens design and mechanical design to the completion of lenses with metal frames. We measure with our owned "Zygo" interferometer to ensure high-precision optical components are quality assured before shipment.
