Learning Forum

[manager]

I have two questions on the LED collimator lens in the Zemax opticstudio sample file. 

(1) How we target the beamwidth for example a 20 degree or 30 degree beam width 

(2) I want to add a micro lens array infront of the TIR lens and optimzie for the uniformity. 

Possible if someone can share the optimizer and the surface defination for this, will be really helpful. 

I am adding both pictures so its clear what I am asking. 

[Berta Bernad]

Hi!

For your first question, you can use the Optimization Wizards and use as criterion the RMS Angular Radius, X or Y.  Selecting the RMS Angular Radius target would take into account the incident angle of the rays as they are. However, the RMS Angular X and Y options would only take into account the incident angle in specific directions, i.e. with respect to X or Y direction.

For your second question, if you want this kind of geometry I think you can use the Array Ring object, which is a collection of identical objects, based upon a single parent object, arranged in a ring or arc. Array Ring Have a look at the sample file Samples\Non-sequential\Geometry Creation\Ring Array Example 3- Hexapolar Array

Best regards, 

Berta

[manager]

Hi Berta, agreed, the lenslet arrays are all rectangular in shape, however its easier to work with as I don't need multiple arrays to adjust like in the example you are suggesting. Possible to make the rectangular lenslet to circular or hexagonal as you suggesting? 

[Berta Bernad]

Hi! Yes, as you said the lenslet arrays are all rectangular volumes and currently there is no other shape available. In fact, although it may be a bit more difficult to manage in the non-sequential component editor, as you have an extra line, it is recommended, if possible, instead of using these object to make a single lenslet and then create an array using the Array Object as is usually more efficient because ray traces more quickly.

[manager]

Hi Berta,

Thank you about the help on textures. Speaking of micro lens array (MLA), very similar shape is macro focal reflector. Below are the pictures from Lucid shape. Does Zemax has a surface property to define similar shape as shown below? 

(2) On that note, how I can get a CAD file profile import into Zemax as a freeform surface?  I saw an old post in the link below but its not complete. Do you have any other lead that will allow me to take the cross section and create a zemax freeform surface to create reflectors? 

Converting CAD data of the TIR lens into the parametric surface for optimization in NSQ mode | Zemax Community