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I will also speak with our technical marketing department about adding this information to our website.For an optic designer it is imported to know the full description of the optical surfaces. If the extender is omitted, .zmx is assumed. If not, what is your suggestion for mounting the lens?Thank you for contacting Thorlabs. So, although the answer is not straightforward, you can consider the effective focal length as being measured a few millimiters from the convex surface of the lens. Data IO 9. By default modeling software often uses a paraxial ray trace, but in this case, a real ray trace is required for the most complete description of the NA. A techsupport representative will contact you directly for more information on quoting a Ø25mm version of the ACL25416U-A.What is the formula for calculating numerical aperture? CGHs must be manufactured specifically for each test item and are therefore only economical for series production.

As I look at your picture, I see collimated light to the left and to the right of the pair (external to the pair) and light focused to a point between the pair.
endobj

ZEMAX Ideal Lens Simulation ZEMAX Ideal Lens …

<>>> The decision as to which method is used depends on accuracy but also on manufacturing state. thanks in advance for your answer!Response from Bweh at Thorlabs USA: You may consider the SCL04. The ACL line is not a high performance line and are mainly used for less-demanding application. The rotation symmetry of the lenses means that the combination of several of these profiles provides a sufficiently precise knowledge of the shape of the lens. Mirrorless Lenses. macro execution. Introducing a thin aspheric plate. I am a bit confused because on the CAD drawing the BFL is noted with "(ref)" and on that same autoCAD pdf, "ref" refers to the edge thickness. Savvy Optics Home page. The back-focal length depends on the wavelength. We had optimized our setup using AL108 and AL1210 combination for a Fluorescence detection (non-imaging application) setup. We have added the B270 transmission curve, as well as a link to download the transmission data in an Excel spreadsheet.

Thanks in advance for the education! Inserting a powerless thin or thick meniscus lens. The use of interferometers has become a standard method of testing optical surfaces. Then this distance is calculated correctly.

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%PDF-1.5 We will follow-up with you.Like the comment of barney.william, I'm trying to calculate the NA of these lenses, albeit by a different approach, which I believe should be accurate (at least for the plano-aspherical lenses): x��T�n�@}����u�7;�7/�P@H ���ܐ�I�IU>��M�Ƒ݀"M&�9��m�w�)PR)�Dʃ'�(h����,�7y�0Vʡ2�蛳� \��lt�WR{�-�ػ���vp��W����T{�J#�Тu�6~YBi#mե�O��y�6E>�V����m�qZ��� �(�-�-T.�Y��Y���t�1��6�WD8�ۃHy��9]���z����60�$�͌;�"r�/��AG_M"� &7#+�R� These generate an aspherical wavefront in the target shape and thus enable the determination of deviations of the lens from the target shape in an interference image. endobj BillHello, thank you for contacting Thorlabs. Flipping a lens group into reverse order. ZEMAX Application Note Axicon defined by single parameter, θ θ= 0, plane parallel plate Surface sag, z = r. Refer to Zemax for a newly updated and comprehensive CDGM folder. The asphere's more complex surface profile can reduce or eliminate While in principle aspheric surfaces can take a wide variety of forms, aspheric lenses are often designed with surfaces of the form Another possibility is the interferometric measurement of aspheres in subareas, with minimal deviations to the best-fit sphere, and subsequent combination of the submeasurements to a full-surface interferogram. Bending a lens. In general, the equations provided by Tyler (tfrisch) in response to the comment by barney.william you mentioned (NA=D/(2f) or tan(NA)=D/(2f)) are fairly decent approximations.

Is there a particular design intent or application for these lenses over the regular ACL series? 10. The thin lens equation can be used, but it disregards the distance between these planes. Please let us know if you have any other needs.I was wondering if i can get the zemax model for this. endobj �u �6��@j�u(jB�c4���Q��bLѺ�2��M3ؐ���8�P+1j�'��,;�K�odP�iri��-��v}� ���P�4n��rh�@�Hig�5[���,.�.qQ�柑@ v9���+74���;֗֙��Ԃ���=�n�,N�n��̄. We have not established damage threshold for these yet but we may have some recommendations depending on your laser characteristics.

the A coating graph suggests it is but the substrate transmision is stated at 380, which sounds a little close to the edge. ]c\RbKSTQ�� C''Q6.6QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ�� \�" �� j��J���Zz�yu���s)�\�Y|��Wd��~��n�����o.��J�%�{��Ә9N�݊\F���>� �U٨ ��wv�.1Ş��|�\j��� �V=����g7qы�3�$�����m�]Yl���Oj�sj���!�R/!N����s�j����\]Uͅd����%6S�o��~�f�!����".H H4{�,.� �t�"������!�i���K��?��>z|w������W��K��]��ȥ�T���u+� 3. We will correct this shortly.Is the setup shown here correct?
I will reach out to you with more details, but if you have access to Zemax, you can set a real ray trace using our provided models.Which mounting shoud be suitable for the ACL7560U condenser lens? endobj 2�긽��^��(�W�:���)����u��wꗑ��:�Mp2��]TM���W�]�\�1}M���z5o�B�j>Q[FG��]����j�#nD�}��-g�� That being said, as Tyler said in his reply, these equations will not give you the most accurate NA due to the thickness of the lens, index of refraction, etc. I will follow-up with you.My question is about the back focal length on the ACL25416U (and actually other lenses for which the face other than aspherical is non-plano). Symmetric periscopic lens in Zemax We choose the following parameters and calculate surface radii to enter in Zemax … J. For the ACL108, the shift should not be any more than 0.55mm over the full range(380-2100), but I will send you the curve generated from Zemax with more detailed information.There seems to be an error with the prescription data and .zmx file for ACL3026- its modeled performance seems to be far less than other lenses in this category. Any damage to the lens surface caused by the probe tip would be removed in subsequent steps.Interferometers are used when measuring sensitive or polished surfaces. Also, beam diameter needs to be considered. Depending on the manufacturing process and processing status, various measurement tasks are distinguished: