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doricTM Gradient-Index Half Cylindrical Lens0 pages
doricTM Gradient-Index Half Cylindrical Lens
These plano-convex cylindrical lenses are derived from doric™ gradient-index cylindrical lenses by grinding and polishing. Compared to its
parent lens, half-doric lens has longer focal length, longer working distance and NA = 0.35.
They can be used in the visible and near infra-red spectrum as fast-axis collimators for single laser diodes or for building cylindrical lens
arrays for laser diode bars. The absence of acylindrical surfaces makes the alignment of plano-convex cylindrical lenses simple and fast.
In order to accommodate a small emitter pitch, the edge of the lens may be ground to a desired width and the initial rod diameter could be
trimmed to a smaller height as well.
Core is proprietary graded index material.
Index profile is available after signing a non-disclosure agreement.
WEBCODE:
D149xxx
LENS DRAWING
SPECIFICATIONS
SYMBOL
VALUE
Lens Type
PLANO-CYLINDRICAL
Material
FUSED SILICA (with doped core)
Transition Temperature
Tg
Design Wavelength
λ0
~ 1100°C
670 nm
Operating Wavelength
λ
600 – 1600 nm
Available diameter
Φ
60, 80, 100, 120, 200, 250, 300, 400, 500 µm
0.60, 0.70, 0.75, 0.80, 0.90, 1.0, 1.3, 1.5 mm
Central Thickness
CT
CT = Φ / 2
Dimension tolerance
ΔΦ
ΔCT
+/- 0.010 mm
Effective focal length
EFL
EFL = 0.931 Φ
Working distance
WD
WD = 0.631 Φ
Numerical aperture
NA
0.35
Beam quality factor
M2
1.3
AR coating
AR
2S-VIS : broad band 2 side AR coating @ 600 – 900 nm
2S-NIR : broad band 2 side AR coating @ 750 – 1100 nm
AA-808 : narrow band all-around @ 800 – 820 nm
AA-940 : narrow band all-around @ 930 - 950 nm
Note
other custom diameter and custom AR coating are available upon request
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doricTM Gradient-Index Half Cylindrical Lenses (12/07)
www.doriclenses.com
418.877.5600
