SELFOC® MicroLens - Instructions

Key to optical parameters: (all units in millimeters unless otherwise stated)

λ Wavelength of incident light in microns (>0.55 mm)
L₁ Object distance (from object point to lens' front surface)
L₂ Image distance (from lens' back surface to image point)
N₀ On-axis refractive index of SELFOC® lens
√A Index gradient constant (mm-1)
Z Lens length
EFL Effective focal length (from rear primary plane to rear focal plane)
BFL Back focal length (from rear lens surface to rear focal plane)
M_T Transverse magnification
θ+ Maximum angle from object above axis
θ_- Maximum angle from object below axis
H_m Maximum object height
L_s Distance from lens surface to aperture stop

Steps for using the SELFOC® MICROLENS Tables:

1. If the object distance for your application is known, click the sheet tab entitled "Obj. Distance". If the desired magnification is known, click the sheet tab entitled "Magnification".
2. Enter the required data in the colored data cells. As you enter numeric values, the SELFOC® lens parameters such as N0, √A, and EFL will be recalculated in the lens table.
3. Adjust the Pitch in small increments and observe how the optical parameters are altered. Recall that 2πP=Z√A.