These lenses are also available uncoated or with a -B, or -C antireflection coating.
Uncoated Wavelength Range: 350 nm - 2.0 µm
Much like surface flatness for flat optics, surface power is a measure of the deviation between the surface of the curved optic and a calibrated reference gauge, typically for a 633 nm source, unless otherwise stated. This specification is also commonly referred to as surface fit.
Positive cylindrical lenses are ideal for applications requiring magnification in one dimension. While spherical lenses act symmetrically in two dimensions on an incident ray, cylindrical lenses act in the same manner but only in one dimension. A typical application is to use a pair of cylindrical lenses to provide anamorphic shaping of a beam. A pair of positive cylindrical lenses can be used to collimate and circularize the output of a laser diode. Another application possibility would be to use a single lens to focus a diverging beam on to a detector array. To minimize the introduction of spherical abberations, collimated light should be incident on the curved surface when focusing it to a line, and light from a line source should be incident on the plano surface when collimating.
All cylindrical lenses can be ordered uncoated and the cylindrical lenses made from N-BK7 can be ordered with one of the following broadband AR coatings: -A: 350-700 nm, -B: 650-1050 nm or -C: 1050-1620 nm
These high performance multilayer AR coatings have an average reflectance of less than 0.5% (per surface) across the specified wavelength ranges. The central peak in each curve is less than 0.25%. These coatings are designed for angles of incidence between 0 and 30 degrees (0.5 NA). For optics intended to be used at large angles, consider using a custom coating optimized at a 45 degree angle of incidence; these coatings are effective from 25 to 52 degrees. The plot shown below indicates the performance of the standard coatings in this family as a function of wavelength. Broadband coatings have a typical absorption of 0.25%, not shown in the reflectivity plots.
Response from Tim at Thorlabs: We are able to quote some custom optics but this can be dependent on quantity. Creating such a focal length lens within tolerances may pose manufacturing difficulties. I will contact you directly with more information.
Poster: nico
Posted Date: 2012-04-11 16:22:06.0
Can you make a 10m (10,000mm) cylindrical lens? I need one of those...
Poster: bdada
Posted Date: 2011-03-10 17:59:00.0
Response from Buki:
Hello David,
Thanks for your feedback. We have already sent you a graph of the typical reflectance spectrum for the A, B, and C coatings in extended ranges. The reason we don't publish this data is that we cannot guarantee the performance of the coating outside of the coating range since it can vary from one coating run to the next. We only guarangee performance within the coating range. However, we will consider your request and think about how we can best convey this information through our website.
Poster: david.thompson
Posted Date: 2011-03-05 18:43:24.0
Can you post here, and/or send me the full reflection curves (at all wavelengths)for the A,B and C coatings. Generally I buy optics for one purpose, but then sometimes am short an optic and need to use them at a wavelength outside of the design region. It would be very helpful to know before doing that what type of a hit I am going to take because I am working outside of the optimized AR region.
Thanks.
Poster: Adam
Posted Date: 2010-04-19 15:00:54.0
A response from Adam at Thorlabs: To mount a rectangular shaped cylindrical lens in the cage system, I would recommend a product similar to the ARV1. Please note that if you would like an alternative solution that is easier to mount, I would suggest looking at our round cylindrical lenses found on the following webpage:
http://www.thorlabs.de/NewGroupPage9.cfm?ObjectGroup_ID=3371
These can be mounted in our SM1 series lens tubes like the SM1L10. The SM1L10 can then be mounted in the 30mm cage plates like the CP02.
Poster:
Posted Date: 2010-04-19 12:28:49.0
How do you mount a cylindrical lens in a 30mm cage system? Is a special mount available?
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All focal lengths are specified at the design wavelength (587.6 nm). Since the index of refraction for N-BK7 is inversely proportional to the wavelength, the focal length of each lens increases with increasing wavelength.
All focal lengths are specified at the design wavelength (587.6 nm). Since the index of refraction for N-BK7 is inversely proportional to the wavelength, the focal length of each lens increases with increasing wavelength.
All focal lengths are specified at the design wavelength (587.6 nm). Since the index of refraction for N-BK7 is inversely proportional to the wavelength, the focal length of each lens increases with increasing wavelength.
All focal lengths are specified at the design wavelength (587.6 nm). Since the index of refraction for N-BK7 is inversely proportional to the wavelength, the focal length of each lens increases with increasing wavelength.
All focal lengths are specified at the design wavelength (587.6 nm). Since the index of refraction for N-BK7 is inversely proportional to the wavelength, the focal length of each lens increases with increasing wavelength.
All focal lengths are specified at the design wavelength (587.6 nm). Since the index of refraction for N-BK7 is inversely proportional to the wavelength, the focal length of each lens increases with increasing wavelength.