PCX lenses
Light Pipe Homogenizing Rod Mounts
• Easily Mounts Light Pipe Homogenizing Rods
• Non-Marring Clamps
• Breadboard Mounting Accessory Available
Specifically designed to hold our standard and Fused
Silica families of Light Pipe Homogenizing Rods,
these mounts simplify handling and integration of
those components. The end-clamps provide minimal
contact with the light pipes, ensuring maximum light
throughput. Each mount includes two non-marring
plastic clamps, one barrel and four set screws. Mounting
bracket (#64-922) for easy bench-top integration
is also available.
#64-922 Mounting Bracket
Ø15.9mm
Accessories
1/4-20 Mounting Bracket #64-922 €66,00
Tapered Light Pipe Homogenizing Rod Mounts
TECHSPEC® Tapered Light Pipe Homogenizing Rod Mounts
Mounts for Light Pipes with: 50 mm Length 100 mm Length
Entrance Aperture (mm) Exit Aperture (mm) Stock No. Price Stock No. Price
2,5 x 2,5 5,0 x 5,0 #64-923 €91,00 #67-401 €104,00
2,5 x 2,5 7,5 x 7,5 #64-924 €91,00 #67-402 €104,00
4,0 x 4,0 8,0 x 8,0 #67-403 €93,00 #64-925 €104,00
Accessories
1/4-20 Mounting Bracket #64-922 €66,00
How To Select The Right Light Pipe Homogenizing Rod
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TECHSPEC® Light Pipe Homogenizing Rod Mounts
Mounts for Light Pipes with:
Aperture, A (mm) Length (mm) Stock No. Price Length (mm) Stock No. Price Length (mm) Stock No. Price
2,0 25,0 #64-904 €83,00 50,0 #64-905 €88,00 75,0 #64-906 €99,00
4,0 25,0 #64-907 €83,00 50,0 #64-908 €88,00 100,0 #64-909 €99,00
5,0 30,0 #64-910 €88,00 60,0 #64-911 €94,00 120,0 #64-912 €110,00
6,0 50,0 #64-913 €88,00 75,0 #64-914 €94,00 150,0 #64-915 €110,00
8,0 50,0 #64-916 €94,00 100,0 #64-917 €104,00 150,0 #64-918 €122,00
10,0 75,0 #64-919 €94,00 125,0 #64-920 €104,00 175,0 #64-921 €122,00
17.0mm
6.5mm
26.7mm
30.4mm
¼-20 UN-2B Thru
Ø20.7mm
Ø20.5mm
Light Pipe Length
Minus 1.5mm
1.6mm
Light Pipe Mount
• Easily Mounts Tapered Light Pipe Homogenizing Rods
• Non-Marring Clamps
• Breadboard Mounting Accessory Available
Specifically designed to hold our TECHSPEC® Tapered Light Pipe Homogenizing Rods, these mounts simplify
handling and integration of those components. The end-clamps provide minimal contact with the light pipes,
ensuring maximum light throughput. Each mount includes two non-marring plastic clamps, one barrel and four
set screws. #64-922 1/4-20 Mounting Bracket for easy bench-top integration is also available.
TECHNICAL NOTE
Much like optical fibers, light pipe homogenizing
rods utilize total internal reflection (TIR) to
transmit light from the entrance to the exit of the
light pipe. The substrate’s refractive index is the
only factor that influences the light pipe’s critical
angle, which defines the angle of acceptance at
which TIR will occur. Light pipes designed specifically
for high NA, standard NA, and low NA
light sources will have the same acceptance angle
if designed with the same substrate.
The critical angle (θc) can be calculated using
Equation 1.
θc = sin-1 1
n
In the case of an N-BK7 light pipe, the index of
refraction at Helium’s d-line of 587,6 nm is 1,517,
resulting in a θc of 41°. If the incident angle is
greater than θc, TIR will occur and light will be
transmitted throughout the light pipe (Figure 1).
Since light rays enter a light pipe at a variety of
incident angles, the number of reflections inside
the light pipe differs from ray to ray. The smallest
incident angle, which is equal to θc, will have more
reflections than light entering at an incident angle
that is many times larger than θc within the same
length light pipe (Figure 2).
Due to low NA light sources having a larger number
of rays greater than θc than high NA light
sources, low NA light pipes are longer than high
NA light pipes, and are recommended for light
sources with narrow beam divergence. Note:
Light pipes are not designed for use with collimated
laser sources. To homogenize collimated
light sources, microlens arrays or flat top laser
beam shapers are recommended. Light pipes are
ideal for homogenizing polychromatic sources
that emit non-collimated light.
Incident
Beam
θc
Figure 1
θc
θ>>θc
Figure 2
(1)
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