I would recommend our precision CNC-polished aspheres if you require better performance.Are the zemax files available for the new ACLxxxxxU series of aspheric condenser lenses with the spherical second surface please? 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 2 0 obj Notes: 1. Thanks in advance for the education! A profile gauge probe is used to measure a section across the lens surface. !(!0*21/*.-4;K@48G9-.BYBGNPTUT3?

|���P���$�4��Zl�Հy- v%N��A�+ϱ|w���M)��PI_fh5Q���)?�"��?d����Wd�+�GHC��"ׅ��W��������p�����84-�͚'����/N��o��SI�>}O��q��K������B���|�%�@Q bG�A6CC�� +|��8ʳ��w��MK�l Is the back focal distance measured from the flat side?A response from Adam at Thorlabs: I will send you all of the aspheric lens data that you will need.Sir, The use of a null corrector in the test can remove the aspheric component of the surface and allow testing using a flat or spherical reference. Multi configuration 8. Thank you.Response from Jeremy at Thorlabs: We have made the Zemax file available for download following your feedback.Response from Jeremy at Thorlabs: Using our M365L2 LED, the divergence would be about 2-3° or so (full angle).What degree of collimation is achieveable with the ACL5040? x���mo�6���w��TӼヤ�(�$]�!A��E�{�9��.V2ٝ��wG'���b6y0@����w�g��������ׯ����m�A"�CN�3��������s��p�0�6�4�?�}�b8�0���C�iW��j�����ؐ��R�r���6�nQ�� G7�s�цȹ���La�0�>D3>h��jOl�Ж����L������C��(���kö�����{�D�M%��J�mn-�|̌_���y���cBpw�!��=C���E��^߻繄ĕk���G�@D:�uB����u�O��Ϫժn�.a|Ə�SQ�!�ٚ��QB�V��V�E�����&l�$�\��B�N� L��ue���a>�u�t�Rz^e#�n��_��W�t�ٯ0�i8x;y��z�*4c&hG ۟�=�A���R7�M�J_dN� 07>����}� ��t ���sa�I~���9�g#D�&���y6 Material index fit 4. Graphical options 6. http://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=1488Response from Bweh at Thorlabs USA: We have not established damage threshold for these yet but have some recommendations depending on your laser characteristics. Inserting a powerless thin or thick meniscus lens. The laser beam will expand with a half-angle θ of r 0 /f. &K�X�������TH�q$��(���F��+v�7��ϳ7��\�ᨒ��@c*ʡ�X�3���z�IS�(������H8 4. Zemax delivers optical design software, training, and support services that set the highest standards for the optical and illumination industries. Typical interferometer testing is done for flat and spherical optical elements. These include Another method for producing aspheric lenses is by depositing optical resin onto a spherical lens to form a composite lens of aspherical shape.

Why don't I get the NA you present?Hello, thank you for contacting Thorlabs. 6 0 obj Modeling Aspheric Tolerances in Lens Design Software I Brien J Housand*, Leo Gardner, G. Groot Gregory Lambda Research Corporation, 25 Porter Road, Littleton, MA, USA 01460-1434 Computer-generated holograms (CGHs) represent a method for the interferometric determination of the deviation of the lens from the nominal geometry. <> 2. We have added the B270 transmission curve, as well as a link to download the transmission data in an Excel spreadsheet. Please see the Aspheric Lens Design tab for the aspheric specifications. 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. 2�긽��^��(�W�:���)����u��wꗑ��:�Mp2��]TM���W�]�\�1}M���z5o�B�j>Q[FG��]����j�#nD�}��-g�� Is there a particular lens you are looking at that yields a significantly different NA? The basic setup is a diode stack, a bi-convex cylinder lens, a plano-convex cylindrical lens, a plano-concave cylindrical lens, and an aspheric lens. Adaptive optics, stock lens matching, index fit, Macro language, coupling Zemax-Matlab / Python. We will correct this shortly.Is the setup shown here correct? endobj The basic setup is a diode stack, a bi-convex cylinder lens, a plano-convex cylindrical lens, a plano-concave cylindrical lens, and an aspheric lens. If you like to change the wavelength you can also do that by going into the “WAV” menu on the upper menu of the Zemax window.Is the focus length of a lens is wavelength dependent? If using drive, path, or extender, enclose in quotes. Due to their low cost and good performance, molded aspheres are commonly used in inexpensive consumer Several "finishing" methods can be used to improve the precision and surface quality of the polished surface. An aspheric lens or asphere (often labeled ASPH on eye pieces) is a lens whose surface profiles are not portions of a sphere or cylinder.In photography, a lens assembly that includes an aspheric element is often called an aspherical lens.. Introduction, Zemax interface, menues, file handling, preferences, Editors, updates, ... Inserting a powerless thin or thick meniscus lens.


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