Achromat Lens
Achromat Lens
Achromatic doublet lenseshave significantly better optical performance than singlet lenses in visible imaging and laser beam manipulation applications. AchromatLensesare consist of two elements, usually of a positive low-index crown glass cemented to a negative high-index flint glass that have been corrected for chromatic aberration with respect to two or more selected wavelengths. We provide achromatic lensesconsisting of two elements. These lenses have considerably reduced not only chromatic aberration bust also spherical aberration and coma aberration. These are designed with respect to three wavelength 480.0nm, 546.1nm and 643.8nm.
Capacity:
Material: Optical glass.
Diameter: 0.5 to 350 mm
Diameter Tolerance: +0/-0.02 mm
Thickness Tolerance: ±0.01 mm
Surface Quality: 10-5
Surface Figure:λ/10
Centration: 1 minute or 30 Second
Coating: Uncoated, AR and HR
Specification:
|
Material |
BK7 grade A optical glass |
|
Design Wavelength |
|
|
Diameter Tolerance |
+0.0, -0.15mm |
|
ThicknessTolerance |
±0.2mm |
|
Paraxial Focal Length |
±2% |
|
Centration |
<3 arc minutes |
|
Clear Aperture |
>85% |
|
Surface Irregularity |
|
|
Surface Quality |
60-40 scratch and dig |
|
Protective Bevel |
Positive Achromatic Lens Standard Products:
|
Part No. |
f (mm) |
Ф (mm) |
R1(mm) |
R2=R3(mm) |
R4 (mm) |
tc1 (mm) |
tc2 (mm) |
fb (mm) |
LensA |
Lens B |
|
TPA101 |
-4.055 |
-23.23 |
SK9 |
SF15 |
||||||
|
TPA102 |
-0.902 |
-25.23 |
BK7 |
SF5 |
||||||
|
TPA103 |
-13.49 |
-37.84 |
BK7 |
SF5 |
||||||
|
TPA104 |
-17.539 |
-48.75 |
BK7 |
SF5 |
||||||
|
TPA105 |
-22.0 |
-60.57 |
BK7 |
SF5 |
Note: Other size, materialandcoating are available upon request.
Negative Achromatic Lens Standard Products:
|
Part No. |
f (mm) |
Ф (mm) |
R1(mm) |
R2=R3(mm) |
R4 (mm) |
tc1 (mm) |
tc2 (mm) |
fb (mm) |
LensA |
Lens B |
|
TNA101 |
-25 |
-15.6 |
-27.5 |
BK7 |
F2 |
|||||
|
TNA102 |
-40 |
-24.45 |
-42.5 |
BK7 |
F2 |
Note: Other size, materialandcoating are available upon request.
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