finite conjugates cassegrain design

[algog]

I have to design a Cassegrain optical device for finite conjugates (obj height <0.125mm). The object minimum-maximum distances required from the primary mirror are: 13-16 cm.
Does anybody know the best radium-to-radium ratio and primary mirror radium-to-mirror spacing for best performance in terms of light collection, when a paraxial magnification of (-1) is required?
Any hints for interesting related sites?
I'm a novel Zemax-EE user.

Thanks in advance

 

[cev]

Magnification of -1? I would think that you would be better off to use a symmetrical system. Are you constrained to reflective optics?

CV

 

[algog]

Yes, I'm constrained to reflective optics. What's the best design for this kinda system?
I outline that the obj-to-secondary mirror distance must be between 13 to 18 cm and that the obj height is no more than 0.125 mm. The image must be collected on an N.A.=0.22 optical fiber.

What do u suggest me to do?

Thans in advance

 

[cev]

I don't know what your wavelength is, much other important information. I think your best system would be symmetric. In your case, imagine a &quot;Z&quot; shaped optical system. Your object and source are at the ends of the &quot;Z&quot;, and there are two spherical mirrors at the bends in the &quot;Z&quot;. The beam is collimated between the two mirrors. If you need more beam control, use a pair of off-axis parabolas. I don't know your object NA, but I assume it is not too large. You could probably use focal length F~= 100 mm and easily find off-the-shelf optics.

CV