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Lens Type:

Lens Application:

Focal Length:

Diameter / Length:

Width:

Materials:

Surface Quality:

Surface Flatness:

Antireflection Coating?

Laser / Heat Resistant?

Microoptic?

Mounted?

Help with Optical Lenses specifications:

Lens Type
   Lens Type       
   Your choices are...         
   Achromats       Achromats, or achromatic lenses, compensate for chromatic dispersion by combining two or sometimes three contrasting glasses. 
   Aspheric Lens       Aspheric lenses compensate for spherical aberration and are used primarily for their light gathering ability. 
   Ball Lens       Ball lenses are used to provide short focal lengths for use with collimated light. Often used in fiber coupling applications. 
   Cylindrical Lens       Cylindrical lens have at least one surface that is formed in the shape of a cylinder. Cylindrical lenses are used to correct astigmatism in the eye and in rangefinders to produce astigmatism; stretching a point of light into a line. 
   Fresnel Lens       Fresnel lenses resemble a planoconvex or planoconcave lens that is cut into narrow rings and flattened. If the steps are narrow, the surface of each step is generally made conical and not spherical. 
   Gradient Index Lens       Gradient index (GRIN) lenses focus light through a precisely controlled, radial variation of the lens material's index of refraction from the optical axis to the edge of the lens. 
   Meniscus       Meniscus lenses can increase the numerical aperture of a positive lens assembly, without an undue increase in the aberrations. 
   Spherical Lens       Spherical lenses, also known as singlets, are transparent optical components consisting of one or more pieces of optical glass with surfaces so curved that they serve to converge or diverge the transmitted rays from an object, thus forming a real or virtual image of that object. 
   Other       Any other optical lens not listed. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Performance
   Lens Application:      Lens application refers to the desired wavelength range for the lens. This wavelength range is mostly dependent upon the lens material.
   Your choices are...         
   Infrared       Lenses are designed for use in the 750 nm to 2500 nm wavelength range. 
   Visible       Lenses are designed for use in the 380 nm to 750 nm wavelength range. 
   Ultraviolet       Lenses are designed for use in the 4 nm to 380 nm wavelength range. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Focal Length       The effective focal length is the distance from the lens the light converges. Focal lengths are positive for a converging system and negative for a diverging system. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Diameter / Length       Diameter of the lens if viewed straight on; could also be thought of as the length. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Width       Width of the lens looking straight on; could also be thought of as the height of the lens. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
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Materials
   Materials      Glass tends to reflect in the infrared range.
   Your choices are...         
   BK7 Glass       BK7 is boro-crown glass (borosilicate glass). A glass with an Abbe v-value of 64. It generally has an index of refraction of 1.51. 
   Crown Glass       One of the two principal types of optical glass, the other being flint glass. Crown glass is harder than flint glass, and has a lower index of refraction and lower dispersion. Both types are used in the production of compound lenses. A glass with an Abbe v-value larger than 50 or 55, depending on its index. It generally has an index of refraction of 1.495-1.54. 
   Flint Glass       One of the two major types of optical glass, the other being crown glass. Flint glass is softer than crown glass, has a higher dispersion and usually a higher refractive index. A glass with an Abbe v-value of 35-40. It generally has an index of refraction of 1.595-1.64. 
   LaSFN9 Glass       LaSFN9 is dense lanthanum flint (borosilicate or silico-borate glasses with RE oxides). A glass with an Abbe v-value of 27-50. It generally has an index of refraction of >1.80. 
   SF5 Glass       SF5 is dense flint glass (alkaline silicate glasses with > 47% wt. PbO). A glass with an Abbe v-value of <35. It generally has an index of refraction of >1.63. 
   SF11 Glass       SF11 is dense flint glass (alkaline silicate glasses with > 47% wt. PbO), Higher quality than SF5. A glass with an Abbe v-value of <35. It generally has an index of refraction of >1.63. 
   Acrylic       Acrylic lenses have 92% transmission in the visible spectrum. 
   Amorphous Polyolefin (Zeonex®)       Zeonex® lenses have 92% transmission in the visible spectrum. They have high stiffness and high temperature resistance. 
   Polycarbonate       Polycarbonate Lenses have 85%-91% transmission in the visible spectrum. 
   Polystyrene       Polystyrene Lenses have 87%-92% transmission in the visible spectrum. 
   Calcium Fluoride       Calcium Fluoride lenses exhibits excellent transmission from 150nm through 7000nm. 
   Germanium       Germanium lenses exhibit excellent transmission in the infrared from 2000nm to 4000nm. 
   Sapphire       Sapphire has a very broad transmission range extending from 150 nm to 6000nm. Its great hardness and resistance to chemical attack and thermal shock allow it to be used in environments where other less costly components would not be suitable. 
   Zinc Selenide       Zinc Selenide exhibits excellent transmission from .69μm to 18μm. 
   UV Grade Fused Silica       UV grade fused silica offer improved transmission in the ultraviolet region compared with crown glass. 
   Other       Any other non-glass, non-plastic lens material. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Lens Surface
   Surface Quality:      Surface quality of the lens.
   Your choices are...         
   10-5 Scratch / Dig       A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 10/5 indicates the average diameter of the digs to be .05 mm and the average length of a scratch is .10 mm. 
   20-10 Scratch / Dig       A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 20/10 indicates the average diameter of the digs to be .10 mm and the average length of a scratch is .20 mm. 
   40-20 Scratch / Dig       A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 40/20 indicates the average diameter of the digs to be .20 mm and the average length of a scratch is .40 mm. 
   60-40 Scratch / Dig       A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 60/40 indicates the average diameter of the digs to be .40 mm and the average length of a scratch is .60 mm. 
   80-50 Scratch / Dig       A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 80/50 indicates the average diameter of the digs to be .50 mm and the average length of a scratch is .80 mm. 
   Other       Any other scratch/dig rating not listed. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Surface Flatness:      The surface flatness of the plate lens, given in terms of λ(λ=633nm).
   Your choices are...         
   λ/2       The biggest variation in surface height for the lens is no more than λ/2 (λ=633nm). 
   λ/4       The biggest variation in surface height for the lens is no more than λ/4 (λ=633nm). 
   λ/5       The biggest variation in surface height for the lens is no more than λ/5 (λ=633nm). 
   λ/8       The biggest variation in surface height for the lens is no more than λ/8 (λ=633nm). 
   λ/10       The biggest variation in surface height for the lens is no more than λ/10 (λ=633nm). 
   λ/20       The biggest variation in surface height for the lens is no more than λ/20 (λ=633nm). 
   Other       Any other surface flatness. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Lens Features
   Antireflection Coating       Lenses have an antireflective coating. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Laser / Heat Resistant       Lenses are rated for use with lasers or are heat resistant. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Microoptic       Suppliers describe the optic as a micro-optic or miniature optic. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Mounted       Optics come already mounted. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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