Адрес: 4, Jiang Wang Miao Street Nanjing,Jiangsu 210042, China
Телефон: +86-25-85282507
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These lenses have a large range of lengths and are the optimum shape for producingreal images at 1:1 magnification. In a single lens application you should considerusing them in preference to a single plano-convex lens if the magnificationlies in the region of -5We specialize in the production of medium to large-size custom mirrors with exactingtolerances, high grade surface finishes and difficult coatings. Please sendus your specification or drawing and we will be happy to return a quotation ASAP.Our average response time is within 24 hours. Our optical designers are alwaysavailable to assist with your special needs and our factory in China is ready tomeet your quantity requirements.Specifications:1) Diameter: Φ4 - 1000mm2) Material: BK7 (K9), or as requested3) Surface quality: up to 60-40 S&D, or as requested4) Surface accuracy: up to λ/4, or as requested5) Clear aperture: >90%6) Diameter tolerance: +0.0/-(0.1-0.2)mm (depends on the dimension)7) Focal length tolerance: ±2%8) EFL: as requested9) Surface figure: λ/4, or as requested10) Centering tolerance: 3, or as requested11) CT tolerance: ±0.15mm, or as requested12) ET tolerance: as requested13) Bevel: (0.25 - 1.0mm) x 45° (depends on the diameter)14) Coating: as requested
Our ED apochromats use a very high homogeneity ED glass as the center element, fullmulti-coatings on all required surfaces, a fully temperature compensated lenscell, and zonal correcting non-equal int
Ellipsoidal mirrors have two conjugate foci. Light from one focus passes throughthe other after reflection. Ellipsoids collect a much higher fraction of total emittedlight than a spherical mirror or c
Ellipsoidal mirrors have two conjugate foci. Light from one focus passes throughthe other after reflection. Ellipsoids collect a much higher fraction of total emittedlight than a spherical mirror or c
Flat mirrors are smooth and highly polished. The flat surfaces are used for reflecting light. The actual reflecting surface is usually a thin coating of silver, aluminum, or other material. They may b
Hyperbolic mirrors are intended to form the image of object in focal plane, and normallyare used in astronomy telescopes, as well as other optical systems demandingbroadband reflection and excellent p
Meniscus lenses are often employed in conjunction with another lens to produce an optical system having either a longer or shorter focal length than the original lens.We specialize in the production o
Parabolic mirrors offer excellent correction of spherical aberrations, and are availablein both on-axis and off-axis specifications. On-axis parabolic mirrors producecollimated reflected light, while
Optical windows are used to isolate different physical environments while allowing light to pass relatively unimpeded. The selection of a window should consider the properties of the different optical
This kind of lens is used to increase focal lengths in existing systems. It is more suitable than equi-concave lens if the magnification lies in the range m0.2.We specialize in the production of mediu
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