An impressive ultra wide-angle prime, the EF 14mm f/2.8L II USM is a Canon L-series lens well-suited for landscape, nature, and interior photography applications. Its relatively bright f/2.8 maximum aperture is well-suited to working in difficult lighting conditions and also makes this lens an ideal choice for astrophotography. The optical design incorporates two aspherical elements and two ultra-low dispersion elements to control both spherical and chromatic aberrations in order to realize a high degree of sharpness, clarity, and color accuracy. A Super Spectra coating has also been applied to suppress flare and ghosting for increased contrast and color fidelity when working in backlit and harsh lighting conditions. A ring-type USM and internal focusing mechanism also afford quick, quiet, and accurate autofocus performance, as well as full-time manual focus override. Additionally, this lens is weather-sealed for use in trying climates. Ultra wide-angle 14mm prime is compatible with full-frame Canon EF-mount DSLRs, as well as APS-C-sized models where it will provide a 22.4mm equivalent focal length range. Bright f/2.8 maximum aperture benefits working in low-light conditions and suits astrophotography applications. Two ultra-low dispersion elements are used to minimize chromatic aberrations as well as eliminate color blurring around the edges of subjects. Two aspherical elements help to minimize distortions and spherical aberrations in order to maintain edge-to-edge sharpness and illumination. Super Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and color neutrality when working in strong lighting conditions. A ring-type Ultrasonic Motor (USM), along with an internal focusing system, is employed to deliver fast, precise, and quiet autofocus performance as well as full-time manual focus override. As a member of the esteemed L-series, this lens is sealed against dust and moisture for working in inclement environmental conditions. Built-in lens hood helps to block stray light and also protects the bulbous front element. Lens's design accepts rear insert-type gelatin filters, which are cut-to-size and inserted behind the rear lens element.
Blending a compact form factor with versatile performance, the Nokton Classic 35mm f/1.4 II MC from Voigtlander is a fast wide-angle prime designed for M-mount rangefinder cameras. This updated, version II of the lens features a symmetrical optical design with one abnormal partial dispersion element, which retains the distinct character and high color accuracy rendering of the original, but also reduces curvature of field and astigmatism for improved focusing accuracy and more even sharpness across the entire image plane. This lens also features a multi-coating to suppress lens flare and ghosting for improved contrast and color fidelity when working in strong lighting conditions. Its manual focus design permits working with subjects as close as 2.3' away and a 10-blade diaphragm contributes to a pleasing bokeh quality to suit working with shallow depth of field. Focal Length 35mm Maximum Aperture f/1.4 Minimum Aperture f/16 Lens Mount Leica M Angle of View 63�° Minimum Focus Distance 2.3' / 70 cm Optical Design 8 Elements in 6 Groups Diaphragm Blades 10 Focus Type Manual Focus Filter Size 43 mm (Front) Dimensions (¸ x L) 2.2 x 1.1" / 55 x 28.5 mm Weight 6.67 oz / 189 g
Product Name:1.49/1.56/1.60/1.67 S/F Single Vision Lens Material:CR39/NK55/MR-8/MR-7 Index:1.499/1.553/1.598/1.665 Diameter:70/75mm Available Base:Plano~10.00 Abbe Value: 58/35/32 Coating: HC/HCT/HMC+EMI/SHMC Design: ASPH/SPH Color:Clear Transmittance:Over 93%/Over 96.5%/Over 97% Coating Color:Green,Blue
Belilang RO Polisher Buffing Pad Features : 1.Suitable for RO. Polisher machine 2.Made of German sponge which with good tensile . 3.Exclusive Patened product with convex hook and loop fastener 4.Unique Bonding technology decide it's long service life 5.Stock pads are available ,customized pads are welcomed 6.Different colors with different polishing effect . 7.Maroon for cutting , Yellow for Light cut, orange for polishing Black for finishing 8.6"sizes are available
Product Name: Single Vision Lens Material:NK55 Diameter:70, 65 Index:1.56 Power Range:SPH:-0.00~-14.00;CYL:-0.25~-2.00 SPH:+0.25~+8.00;CYL:-0.25~-2.00 Abbe Value: 38 Coating: UC/HC/HMC+EMI/SHMC Design: ASPH/SPH Color:Clear Transmittance:Over 96.5% Coating Color:Green,Blue,Gold,Purple
Product Name:1.67 Single Vision Lens Material:MR-7 Index:1.67 Power Range:SPH:-0.00~-800.00;CYL:-0.25~-2.00 SPH:+0.25~+8.00;CYL:-0.25~-2.00 Abbe Value: 32 Coating: UC/HC/HMC+EMI/SHMC Design: ASPH/SPH Color: Clear
Product Name: 1.56 hc Single Vision Lens Material: SR-55 Index: 1.56 Diameter:65,70,72 Power Range:SPH:-0.00~-8.00;CYL:-0.25~-2.00 SPH:+0.25~+6.00;CYL:-0.25~-2.00 Abbe Value: 35 Coating: HMC+EMI/SHMC Design: SPH Color: Clear
Product Name:Realkoko Tri Color Contact Lenses Manufacturer New Three Tone 14 mm Contact Lens Green Ringlight Contact Lenses Material:HEMA, MMA, NVP, AIBN and colorant Power Range:From 0.00D to -6.00D, each step 0.25D;above -6.00D, each step 0.50D Water Content:40 % Base Curve (mm):8.40mm ~ 8.60mm Diameter (mm):14.00mm ~ 14.50mm Center Thickness:0.06mm ~ 0.12mm Disposal Period:within one year. Expiry Date:5 years Package:PP blister package
Place of Origin:China Brand Name:Realcon Model Number:FA-71 Lenses Color:gray blue green brown purple Using Cycle Periods:Yearly Lenses Hardness:Soft Diameter:14.2 mm Center Thickness:0.06 -- 0.12 mm Color:13 colors Lens Hardness:Soft Using Cycle Period:Yearly Disposable Contact Lens Lens Design:Cast Molding Material:HEMA/NVP Base Curve:8.60mm Water Content:40% Power Range:S-0.00~5.00(0.25 step);S-5.00~10.00(0.50 step) Single package size: 4X2X7 cm Single gross weight:0.030 kg Package Type: Blister or Vial Packing
All kinds of bespoke optical waveplates
All kinds of bespoke optical crystals: BBO crystals LBO crystals
All kinds of bespoke optical filters: IR bandpass filters UV bandpass filters heat absorbing filters
All kinds of bespoke optical flats
All kinds of bespoke infrared optics: Silicon ZnS ( zinc sulfide) Germanium Zinc Selenide
All kinds of regular and bespoke optical lenses: achromatic doublets, achromatic triplets, plano-convex lenses, plano-concave lenses, double-convex lenses, double-concave lenses, meniscus lenses, large aperture lenses, etc.
All kinds of bespoke optical reflectors: Dielectric HR mirror Metallic mirror
[Title] acridine hydrazide nsp-sa-adh [English name] nsp-sa-adh [molecular weight] 740.85 [Formula] c34h40n6o9s2 [appearance] yellow solid or powder [storage conditions] refrigerate at 2-8 , seal, dry and keep away from light [purpose] it can be used to mark proteins, antigens, antibodies, nucleic acids (DNA, RNA), etc. The terminal of acridine hydrazide is suitable to react with the polysaccharide, nucleic acid or protein containing aldehyde group and label it with acridine. [product advantage] Purity: 98% (HPLC), good water solubility, stable process, small batch difference.
we have a very light and comfortable lenses which our customers can wear more than once and can wear up to 1 year usage period. looks are totally natural.
BK7 Glass Powell Lens PARAMETER: The Powell lens is a quantum leap forward in line generator performance over the simple cylinder lens. A cylinder lens produces a poorly illuminated line, one limited by the non-uniform, Gaussian laser beam. The Powell lens' rounded roof is in fact a complex two-dimensional aspheric curve that generates a tremendous amount of spherical aberration that redistributes the light along the line; decreasing the light in the central area while increasing the light level at the line's ends. The result is a very uniformly illuminated line used in all manner of machine vision applications; from bio-medical and automobile assembly to chocolate chip cookie production. The Customized Powell Prism resembles a round prism with a curved roof line. The lens is a laser line generator, stretching a narrow laser beam into a uniformly illuminated straight line . Specification Material Fused silica/ BK7glass Diameter 0.8mm, 1mm, 2mm, 3mm, 5mm, 9mm, 10mm, 15mm or customized size Diameter Tolerance +0.0/-0.05mm / ±0.05mm Range of Fan 3°,5°,10°,15°,20°,30°,45°,53°,60°,70°,75°,85°,90°96°,100°,110°,120° Angle tolerance 90% Bevel
Spherical Lens PARAMETER: Sphertical Lens Plano Convex Lens are positive focal length elements that have one spherical surface and one flat surface. These lenses are designed for infinite conjugate (parallel light) use or simple imaging in non-critical applications. These optic lenses are ideal for all-purpose focusing elements. BRD Optical Manufactures Plano Convex Lens Plano Convex Lens Exporter:ChangChun BRD Optical co., Ltd Specification: Material Optical grade glass/ Fused Silica/ Sapphire Diameter 2mm~300mm Diameter Tolerence ±0.05mm~±1mm Surface Quality 80/50, 60/40, 40/20, 20/10, 10/5 Surface Accuracy λ~λ/20 Centration 3 arc min~30 arc sec. Coating As per customer's request
