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25mm Dia. x 35mm FL, Uncoated Germanium Meniscus Lens

Name: 25mm Dia. x 35mm FL, Uncoated Germanium Meniscus Lens
Brand: TECHSPEC
SKU: 87-957
Price: 882.00 SGD

Stock #87-957 14 In Stock

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S$882.00

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Specifications
Product Details
Technical Information
Special Handling
Accessories
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Frequently Purchased Together
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Resources

Specifications

General

Type:

Meniscus Lens

Physical & Mechanical Properties

Diameter (mm):

25.00 +0.0/-0.1

Center Thickness CT (mm):

2.50 ±0.10

Edge Thickness ET (mm):

1.6

Clear Aperture (%):

90.00

Centering (arcmin):

Optical Properties

Effective Focal Length EFL (mm):

35.00

Focal Length Specification Wavelength (μm):

10.6

Back Focal Length BFL (mm):

33.29

Germanium (Ge)

f/#:

1.4

Numerical Aperture NA:

0.36

Coating:

Uncoated

Wavelength Range (nm):

2000 - 14000

Wavelength Range (μm):

2 - 14

Radius R₁ (mm):

38.43

Radius R₂ (mm):

57.61

Surface Quality:

60-40

Regulatory Compliance

RoHS 2015:

Compliant

Certificate of Conformance:

View

Reach 240:

Compliant

Product Details

Wavelength Range of 2 - 16μm
Durable Design for Demanding Applications
Superior Spherical Correction
Due to material supply chain disruptions with germanium, there may be increased lead times and price changes on our germanium products. For more information, please contact our customer service team.
Edmund Optics has limited remaining inventory of this part number and no raw material available to supply more once this is depleted. Please contact our Product Support Engineers to help with an alternate solution for your needs. Customer Service can provide you the latest price and availability.

TECHSPEC® Germanium Meniscus Lenses are designed for demanding infrared applications including infrared imaging or surveillance, remote sensing, or infrared spectroscopy. TECHSPEC Germanium Meniscus Lenses offer superior spherical correction and smaller spot sizes than comparable focal length TECHSPEC Germanium PCX Lenses. These meniscus lenses are offered uncoated or anti-reflection coated for increased performance in the designated coating wavelength range.

Technical Information

AR COATED GERMANIUM
	Typical transmission of a 3mm thick Ge window with BBAR (3000-5000nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_avg <3% @ 3000 - 5000nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick Ge window with BBAR (3000-12000nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_avg <5.0% @ 3 - 12μm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick Ge window with BBAR (8000-12000nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_avg <3.0% @ 8 - 12μm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data

Special Handling

These optics require special handling to avoid damage and ensure long-term performance. Proper handling, cleaning, and storage are essential to maintain optical quality. Explore our Optics Cleaning Resources for step-by-step guides and best practices. For personalized assistance, Email us or Chat with our technical support team.