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Products/Services for effective focal length
The Famous High-speed Artist. This moderate wide-angle lens is based on the renowned Distagon design of the 1980s for the Contax system. (read more)
...image captures. Other types of camera lenses and video lenses are also available. Optical characteristics for camera lenses and video lenses include focal length, adjustability, focal ratio, minimum focusing distance, zoom capability, zoom... Search by Specification | Learn More
...wavelength ranges. Ultraviolet Fresnel lenses are designed for use in the 4 nm to 380 nm wavelength ranges. Important lens geometry parameters to consider when specifying Fresnel lenses include effective focal length, grooves, round or square... Search by Specification | Learn More
...of the available gradient index lenses or GRIN lenses is best for the application at hand, the following specifications are of greatest import: effective focal length, lens diameter, radius of the curvature, and the thickness of the edge and the center. Focal... Search by Specification | Learn More
...for optical lenses include effective focal length, diameter or length, width, and lens application. Ultraviolet (4 nm to 380 nm), visible (380 nm to 750 nm) and infrared (750 to 2500 nm) products are commonly available. Search by Specification | Learn More
Focal plane arrays (FPA) are detectors consisting of a linear or two-dimensional matrix of individual detector elements, typically used at the focus of an imaging system. Search by Specification | Learn More
...convex-convex, concave-concave, meniscus, aspheric, and ball. Plano-convex lenses have a positive focal length, which makes them ideal for collecting and focusing light for many imaging applications. Plano-concave lenses have a negative focal... Search by Specification | Learn More
...configurations. Plano-concave lenses have a negative focal length and are used for image reduction or to spread light. Plano-convex lenses have a positive focal length, which makes them ideal for collecting and focusing light for many imaging... Search by Specification | Learn More
...focusing options can be used to yield even smaller spot sizes. As a rule, the beam’s expander power is equal to the ratio of the effective focal length (EFL) of the objective lens to the EFL of the entrance optic. The separation between these two... Learn More
...in longitudinal color foci of about 0.05 percent. Such lenses are usually designed to focus blue and red light to the same position, with all other colors focusing at either slightly longer or slightly shorter focal lengths. The discordant 0.05... Search by Specification | Learn More
...as the distance of the light source from the reflector. A secondary focal length determination is also needed for proper focusing of ellipsoidal reflectors. This range is the point at which the reflected light converges outside the reflector. Search by Specification | Learn More
Spherical mirrors are curved so that reflected beams converge on a focal point. Search by Specification | Learn More
...choosing monochromators. Dispersion in monochromators is the wavelength dispersing power, which is usually expressed as spectral range or slit width (nm/mm). Dispersion depends on the focal length, grating resolving power, and the grating order. Resolution... Learn More
...for reflecting light. Usually, the reflecting surface is a thin coating of silver, or aluminum on glass. Product specifications for optical mirrors include diameter, radius of curvature, thickness focal length, and surface quality. The diameter... Search by Specification | Learn More
...is the focal length. Focal length is the distance from the mirror the light converges. Parabolic mirrors can be supplied in a variety of materials. Mirror material refers to the classification of the material used to make the mirror. The material... Search by Specification | Learn More
...of laser delivery and laser compatibility specifications. Important considerations include diameter, focal length, clear aperture or beam diameter, laser output power, and laser type. The clear or free aperture size of a laser optics component is the size... Search by Specification | Learn More
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Telecentric VISIONMES® Lenses Carl Zeiss Camera Lens Division
Makro-Planar T* 2/100 Telephoto Macro Lens Carl Zeiss Camera Lens Division
Planar T* 1,4/50 ZF Lens Carl Zeiss Camera Lens Division
Planar T* 1,4/85 Short Telephoto Lens Carl Zeiss Camera Lens Division
Distagon T* 2,8/21 Super Wide Angle Lens Carl Zeiss Camera Lens Division
Distagon T* 2/35 Wide-Angle Lens Carl Zeiss Camera Lens Division
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Product News for effective focal length
Vari-focal lens (manual/auto iris)
Focal length (mm):6-60;Aperture (F):1.4-360;Mount:CS;Format cover (inch):1/3;Horizontal Angle of View (°):49.1-5.0;Min. object Dimension (m):0.3;Dimension (mm):82×48×41; Net Weight (g):145;Iris:Auto (DC drive) (read more)
Distagon T* 2/35 Wide-Angle Lens
The Versatile Reporter. This classic focal length with a moderate wide-angle perspective
is perfectly suited for commercial, location and nature photography. The Distagon T* 2/35 is designed to provide very high image quality over a wide range of apertures and focusing ranges.
(read more)
Distagon T* 2/28 Wide-Angle Lens
The Famous High-speed Artist. This moderate wide-angle lens is based on the renowned Distagon design of the 1980s for the Contax system. (read more)
Distagon T* 2,8/25 ZF Lens
The Legendary Wide-angle Lens with Close-focus Capability. This wide-angle lens is the most advanced version of the legendary Distagon, a high performance lens with close focus capabilities, that was first introduced in 1961. (read more)
Makro-Planar T* 2/100 Telephoto Macro Lens
The Selective Macro Superstar. The Makro-Planar T* 2/100 features a completely new optical design which incorporates floating lens elements to ensure distortion free, maximum imaging performance throughout the focusing range. (read more)
Distagon T* 3,5/18 Ultra Wide Angle Lens
Focusing on the perfect moment. This ultra wide angle lens is ideal for capturing breathtaking moments in dramatic perspectives. The Distagon T* 3,5 / 18 offers excellent image performance over the entire image field. (read more)
Fixed Length Security Seal - Stoffel's TeviTag
The TeviTag security seal is the result of Stoffel Seals' commitment to provide a simple, cost-effective solution that increases security and efficiency. It is the first tamper-evident security device to combine Security and Logistics. (read more)
The most cost-effective linear actuator available
The next generation of belt driven modules, the Parker Daedal HPLA expands on the roller wheel bearing design with the addition of high-load capacity steel wheels. The steel wheels significantly increase normal and moment load capacities of this belt driven actuator. (read more)
Focal Plane Arrays
No matter your choice, a Fairchild Imaging focal plane array can be perfectly suited to your aerospace, industrial, medical or scientific imaging application. (read more)
SUR-SIZE™ Cut-To-Length Assembly
The combination of a knife assembly and a roll feeder creates a Sur-Size™ cut-to-length assembly. The Sur-Size™ cut-to-length assemblies are capable of handling a wide variety of film, foil, paper and non-woven products. They are self-contained, complete units that deliver finished product to your specifications. (read more)
Conduct Research
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Understanding Ball Lenses
The effective focal length of a ball lens is very simple to calculate (Figure 1) since there are only two variables: the ball lens diameter, D, and the index of refraction, n. The effective focal...(read more)
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Subwavelength, Binary Lenses at Infrared Wavelengths
We describe the nanofabrication of subwavelength, binary lenses in GaAs for operation in the infrared. Subwavelength surface relief structures create an artificial material with an effective index of...(read more)
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Focal Length Focal length - The focal length of a lens or mirror is the distance along the optical axis from the lens to the principal focus (or focal point). A |
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Diffraction - Wikipedia, the free encyclopedia where ? is the wavelength of the light and N is the f-number (focal length divided by diameter) of the imaging optics. |
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Aperture - Wikipedia, the free encyclopedia The lens aperture is usually specified as an f-number, the ratio of focal length to effective aperture diameter. |
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TECHSPEC® Precision Aspheric Lenses - Edmund Optics Effective Focal Length EFL (mm) 11.25 Aperture (f/#) Effective Focal Length EFL (mm) 11.25 Aperture (f/#) See Edmund Optics Inc. Profile & Catalog |
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Zinc Selenide Meniscus Lenses - Edmund Optics Effective Focal Length EFL @ 12?m (mm) 12.94 Effective Focal Length EFL @ 10.6?m (mm) See Edmund Optics Inc. Profile & Catalog |
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FUJIFILM USA FUJINON | Effective Focal Length Field of View | Effective Focal Length | Lens Focal Length | Camera/Lens Format Conversion See Fujinon Inc. Information |
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Chapter 25 Tele Lenses |
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Measurement of lens focal length using multicurvature analysis... Yet it is sometimes difficult to make accurate effective focal length and pupil position measurements, especially for long focal length lenses. |
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Sandia National Laboratories - <? echo $iptitle; ?> Details the variable focal-length lenses or mirrors can provide the flexibility necessary to change the overall system focal length (i.e., effective focal |
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KODAK CANADA: Guide to Better Pictures This allows the physical length of some telephoto lenses to be shorter than the focal length. See Eastman Kodak Company Information |
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