Anti-glare acrylic lens are made of fabricating a super-fine single-matte acrylic sheet,
it creates much better readability of the text, image, and photos for people by reducing the glare, reflection ,and eye dizziness.
thickness: 2, 3mm
size: 800mm x 1260mm
masking: brown masking paper
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New original tin contact lens circle contact lens
Product details Power Range Plano ~6.00(0.25 step) ;
6.00~10.00(0.50step)
Base Curve 8.6 mm
Diameter 14 mm
Water content 40%
Center Thickness 0.08 mm
Package Blister ,Vial
Contact lenses are thin, clear plastic disks you wear in your eye to improve your vision. Contacts float on the tear film that covers your cornea.
whose base plate material is PMMA, also known as pressure afterburner lenses, sub-afterburner lenses, in fact, refers to the general term of PMMA sheet after electroplating, using plastic lenses instead of glass lenses, has the advantages of light weight, not easy to break, easy shaping and processing, easy coloring, etc., the momentum of development is increasing, and has become a kind of technology in lens production. Plastic sheets can generally be made into: single-sided mirror, double-sided mirror, taped mirror, paper mirror, semi-lens, etc. can be done according to different requirements. For example, mobile phones and TV screens are visible everyday.
Because acrylic is difficult to produce and its cost is high, there are many substitutes of high quality and low price in the market. These substitutes, also known as acrylic, are actually ordinary organic or composite boards (also known as sandwich boards). Ordinary organic board is cast with ordinary organic glass cracking material and pigment. Its surface hardness is low, and it is easy to fade. After polishing with fine sand, the polishing effect is poor. The composite board has only a very thin acrylic surface and ABS plastics in the middle. It is easy to delaminate due to thermal expansion and contraction in use. The true and false acrylic can be identified from the slight chromatic aberration and polishing effect of the plate section.
1. Architectural Applications: Shop Window, Soundproof Doors and Windows, Lighting Hood, Telephone Booth, Decorative Color Mirror, etc.
2. Advertising applications: light boxes, signboards, signboards, exhibition shelves, etc. 3. Traffic applications: train, car backup mirror, car lens, etc.
4. Medical applications: baby care box, various surgical medical appliances and civilian articles: handicraft, cosmetic mirror, bracket, aquarium, toy mirror, etc.
5. Industrial applications: instrument surface plate and cover, etc.
6. Lighting applications: fluorescent lamp, Pendant lamp, Street lampshade LED reflector, acrylic reflector, etc.
If you need proofing, please give specific size specifications drawings.
Optical Lens Assemblies
Optical AssembliesÂ
PARAMETER:
The F15-300mm zoom lens is mainly used in visible light band to detect specific targets or regions and transmit TV images and focal length information in real time.
The f15-300mm zoom lens is mainly used in visible light band to detect specific targets or regions and transmit TV images and focal length information in real time.
1. Applied environmentÂ
  Â
Teperature
() Visibility
Km Relative humidity
(%)
Visible light imaging 25 15 80
Enhance to penetrate the fog
25 1-8 80%
2. Main performace
2.1 Sensor:Â Digital 1/1.8 "color CCD.
2.2Â Illumination adjustment range:Â 10~1104lx).
2.3 The smallest view: 1.7°.
2.4Â Optical magnification ratio: 20X, consecutive magnification.
2.5Â Imaging range:Â 20m~.
2.6 Frame frequency:Â 50Hz.
The F15-300mm zoom system is composed of visible light zoom lens, control circuit board and power supply circuit board. The visible light zoom lens includes CCD, optical lens, diaphragm, potentiometer, micro-dc motor, CAM and other structural parts.
3 Optical lens design
3.1Â Zoom lens system is an optical system in which the focal length changes within a certain range and the image plane remains fixed. In general, the relative aperture is constant during zoom.For imaging system, continuous zoom optical system is the best way to solve the problem of large field search and small field resolution. The ratio of the two ultimate focal lengths in the zoom range, namely the ratio of the long focal length to the short focal length, is called magnification ratio, also known as multiplier. In consideration of the secondary spectrum requirements, the plan of the small relative aperture of the long focal length is adopted (that is, the relative aperture also changes during the zoom process).
3.2Â The optical system USES a continuous zoom lens with a focal length of 15mm~300mm.
No. Parameters Item Design Result
1 Zoom ratio 20x
2 Focal length f=15mm~300mm
4 Horizontal field 1.27°~24.9°
5
Visual discrimination(Design value) Short focus(Wide field of view) 200lp/mm
Long focus(Wide field of view) 180lp/mm
6
OTF Characteristic frequency 145lp/mm MTF 0.2
Prized for event, portraiture, and sports shooting, the Canon EF, Nikon F and Sigma SA mount Sigma 70-200mm f/2.8 DG OS HSM Sports Lens is a flexible telephoto zoom characterized by its bright and sophisticated design. The fast constant f/2.8 maximum aperture excels in difficult lighting conditions and also offers increased control over depth of field for isolating subjects. In regard to the optical layout, an impressive 10 low dispersion elements are used to greatly reduce chromatic aberrations and color fringing for improved clarity and color accuracy. A Super Multi-Layer Coating is also featured, and helps to suppress ghosting and flare when working in strong lighting conditions.
Complementing the optics is an Intelligent OS system, which minimizes the appearance of camera shake for sharper results when shooting handheld. A Hyper Sonic Motor is also used to provide quick and quiet autofocus performance along with full-time manual focus override. The physical design of the lens also incorporates several seals to guard against dust and moisture, and a water- and oil-repellent coating has been applied to the exposed elements to prevent moisture, fingerprints, or smudges from sticking to the surface. Additionally, a fixed rotating tripod collar is featured, and has a removable Arca-type compatible foot for wide compatibility with different tripod or monopod heads.
A fast telephoto prime, the Nikon F, Sigma SA and Canon EF-mount 135mm f/1.8 DG HSM from Sigma pairs bright and sophisticated optics with intuitive handling and design. As part of the Art line of lenses, this 135mm f/1.8 is designed for high-resolution rendering, and utilizes FLD and SLD glass to control chromatic aberrations and color fringing for notable clarity. A Super Multi-Layer Coating also enhances image quality by suppressing lens flare and ghosting for improved contrast and color fidelity in strong lighting conditions. Additionally, making it an ideal lens for portraiture, the bright f/1.8 maximum aperture pairs with a rounded nine-blade diaphragm to benefit selective focus and shallow depth of field imaging with smooth bokeh.
Complementing the imaging capabilities, the lens sports a Hyper Sonic Motor to produce quick, smooth, and quiet autofocus performance with full-time manual focus override. The physical design utilizes Thermally Stable Composite material for durability in a wide range of environments, and a brass bayonet mount also offers rigidity and mounting precision.
As part of the Art line within Sigma's Global Vision series, this lens is designed to achieve truly notable optical performance and is ideally suited for creative and artistic applications.
Prime telephoto lens is designed for full-frame Canon EF-mount DSLRs, however can also be used on APS-C models where it will provide a 216mm equivalent focal length.
Bright f/1.8 maximum aperture is well-suited for working in low-light conditions and also provides greater control over the focus position when using shallow depth of field techniques.
Two F Low Dispersion (FLD) and two Special Low Dispersion (SLD) elements are featured in the optical design, and help to reduce color fringing and chromatic aberrations for improved clarity and color accuracy.
A Super Multi-Layer Coating has been applied to lens elements in order to minimize lens flare and ghosting and contribute to producing contrast-rich and color-neutral imagery, even in backlit conditions.
Nine-blade rounded diaphragm contributes to a smooth and pleasing bokeh quality.
The integrated HSM (Hyper Sonic Motor) realizes quick and quiet autofocusing, which is further complemented by an optimized AF algorithm to produce smoother focusing performance. The HSM also permits full-time manual focus control simply by rotating the focus ring at any time.
The lens is constructed using a Thermally Stable Composite (TSC) material, along with traditional metals, for greater precision and use in wide temperature variations.
The bayonet mount is constructed from brass for ensured accuracy and durability. Additionally, rubber sealing is incorporated in the mount design to render it dust- and splash-resistant.
This lens is compatible with the optional Sigma USB Dock for fine-tuning different lens characteristics and updating its firmware.
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: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
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