.

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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