Axis ANVE Exam - Topic 8 Question 124 Discussion

Actual exam question for Axis's ANVE exam

Question #: 124
Topic #: 8

[All ANVE Questions]

Why is germanium used for thermal camera lenses?

AIt is inexpensive

BIt has a low index of refraction

CIt has high optical dispersion

DIt is transparent to the infrared wavelengths

Show Suggested Answer

Suggested Answer: D

Germanium is used for thermal camera lenses because it is transparent to infrared wavelengths. This transparency allows infrared radiation to pass through the lens and reach the camera sensor, enabling the capture of thermal images. Germanium's optical properties make it an ideal material for thermal imaging applications. Reference: Axis Communications thermal camera specifications and technical documentation.

by Veronique at Apr 09, 2026, 06:06 AM

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Marguerita

18 days ago

Totally agree, that's the main reason!

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Eve

23 days ago

It's transparent to infrared wavelengths!

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Ezekiel

1 month ago

I’m a bit confused; I thought germanium was chosen for its optical properties, but I can't recall if it was about dispersion or refraction.

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Fatima

1 month ago

I practiced a similar question about lens materials, and I think the transparency to infrared is definitely a key factor for thermal imaging.

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Laura

2 months ago

I remember studying about materials for lenses, and I feel like low index of refraction was mentioned, but it seems less relevant for thermal cameras.

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Kassandra

2 months ago

I think germanium is used because it's transparent to infrared wavelengths, but I'm not completely sure if that's the only reason.

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