Aspheric Lenses - Lightpath Technologies - #3

/ 24


catalogue search
P. 01
P. 02
P. 03
P. 04
P. 05
P. 06
P. 07
P. 08
P. 09
P. 10
P. 11
P. 12
P. 13
P. 14
P. 15
P. 16
P. 17
P. 18
P. 19
P. 20
P. 21
P. 22
P. 23
P. 24
Pages:


See other catalogues for Lightpath Technologies
You may also be interested in

Isolator, Lens array, Lens, Gradient index lens, Optical isolator


Text version of the page
Aspheric Lenses
Standard Glasses
LightPath® Technologies™ manufactures aspheric lenses using several different types of glass. Transmittance of all four glasses is very good over a large wavelength spectrum. The optimum operating temperature should be less than 200 degrees Centigrade. The best cleaning agents are high purity grades of alcohol or acetone, lightly wiped with a soft optical tissue or cotton-tipped swab.
The 352xxx Series of Lenses
New European (RoHS) and Japanese environmental regulations have restricted the use of lead and other hazardous substances in optical components. ECO550 is an environmentally friendly alternative to conventional moldable glasses. It has similar optical properties to C0550, but does not contain hazardous materials.
The 350xxx Series of Lenses
Corning® developed a special glass to allow production of highly sophisticated aspheric lenses that are cost effective. The code for this glass is CO550, and its low dispersion (vd=50.40) is key for many applications. In durability it is equivalent to Corning© BCD C2060 or Schott® SKI6.
The 370xxx Series of Lenses
For aspheric lenses that require a glass with a higher index of refraction, LightPath® also offers lenses made from Ohara® PBH7I glass. Its high index (nd=I.92286) allows designers to minimize aberrations in lenses with high numerical apertures. It has the added benefit of a lower coefficient of thermal expansion.
The 390xxx Series of Lenses
For aspheric lenses in the mid to long infrared wavelength regions (I to 14pm) LightPath® offers molded aspheric lenses from our Black Diamond chalcogenide glass. See pages 42-45 for details.
Standard Anti-Reflective Coatings
LightPath® offers a variety of multilayer broadband coatings to reduce the back reflection from a nominal 6% for uncoated lenses. The choice of which AR coating is appropriate depends on the type of glass the lens is made from and the wavelength at which the lens will be used.
The 350xxx and 352xxx Series of Lenses
MLBB-A coating: Rmax<I.0%, Rtyp<0.4%, from 400-600nm, AOI=0° MLBB-B coating: Rmax<I.0%, Rtyp<0.4%, from 600-I050nm, AOI=0° MLBB-C coating: Rmax<I.0%, Rtyp<0.4%, from I050-I600nm, AOI=0°
The following coatings can be done on a custom basis.
Please contact your sales representative for information on availability.
MLBB-D coating: R„ax<0.25%, Rtyp<0.I5%, from I300-I700nm, AOI.=0-20° MLBB-E coating: R„ax<0.25%, Rtyp<0.I5%, from I800-2400nm, AOI=0-20° SLAR-M coating: R„ax<2.0%, Rtyp<I.50%, at 775nm, AOI=0-20°
The 370xxx Series of Lenses
MLBB-Q coating: Rmax<0.25%, Rtyp<0.I5%, from I300-I700nm, AOI=0-20°
The following coatings can be done on a custom basis.
Please contact your sales representative for information on availability.
MLBB-O coating: Rmax<I.0%, Rtyp<0.4%, from 600-I050nm, AOI=0° MLBB-P coating: RMAX<I.0%, Rtyp<0.4%, from I050-I600nm, AOI=0°
Typical AR
Coating Curves for C0550 and ECO55
0
REFRACTIVE INDEX CHART
EC0550
C0550
404.7
1.62636
1.62590
2.00599
435.8
1.62068
1.62016
I.98II2
480.0
1.61464
I.6I4II
I.95665
486.1
1.61394
1.61341
I.95392
546.1
1.60837
I.60786
I.93306
587.6
1.60550
I.60500
I.92286
632.8
1.60300
I.6025I
I.9I427
643.8
1.60246
I.60I98
I.9I247
656.3
1.60189
I.60I4I
I.9I057
706.5
1.59987
I.59940
I.90397
852.1
1.59573
I.59528
I.89I26
1014.0
1.59270
I.59227
I.88298
1300.0
1.58898
I.58850
I.87444
1550.0
1.58625
I.58572
I.86954
Abbe Number ( vd )
50.27
50.40
2I.29
CTE (I0-6 / °C)
11.62
I5.0
8.9
dn/dT (I0-6 / °C)
2.39
-II.0
I3.I
.0
0.8
- MLBB-C
- MLBB-A MLBB-B y
0.6
al
6? 0.4
0.2
0.0
400 500 600 700 800 900 I000 II00 I200 I300 I400 I500 I600 I700
Wavelength (nm)
Typical AR Coating Curves for PBH7I
1-800-472-3486
www.lightpath.com

pageCatalog pdf di En 2012-02-07-16