Fresnel 90 Degree 3mm To 100mm Ge Optical Prism Cube
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Detailed Product Description
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Fresnel 90 Degree 3mm To 100mm Ge Optical Prism Cube In long-wave infrared (LWIR) electro-optical systems, managing
payload weight while maximizing optical aperture is a critical
engineering challenge. Our Fresnel 90 Degree Ge Optical Prism Cube represents a disruptive advancement in infrared beam routing.
Machined from monocrystalline or polycrystalline optical-grade
Germanium (Ge), this specialized Optical Prism configuration replaces bulky, traditional solid-glass optics. By
integrating a micro-structured Fresnel zoning pattern onto a compact 90 Degree deflection format, this Cube achieves high-efficiency infrared light bending and spectral
focusing within a footprint spanning from 3mm To 100mm, minimizing volume and bulk weight in tactical optical benches. Standard Germanium elements are inherently heavy due to the high
density of the raw element (5.33 g/cm³), which limits their use in
airborne gimbal systems, drone thermal payloads, and handheld
night-vision hardware. Our Ge Optical Prism design bypasses this restriction by maintaining an ultra-thin
active optical profile via diamond-turned Fresnel micro-grooves. Each 90 Degree reflective and refractive facet is optimized for the 8 - 14 μm
thermal band, providing maximum transmission throughput, low
chromatic dispersion, and high thermal stability under rapid
environmental shifts common in defense and industrial monitoring
applications. Specification Every Germanium component undergoes strict optical performance
auditing using transmission electron microscopy (TEM) and long-wave
infrared laser interferometers.
System Advantages Integrating a Fresnel 90 Degree Ge Optical Prism Cube provides major system-level advantages over traditional reflective
metal mirrors or solid thermal prisms:
Primary Integration Fields
Frequently Asked Questions Q1: Why is Germanium (Ge) chosen for this 90 Degree Fresnel prism
instead of standard optical glass? A: Standard optical glasses (like silicate or borosilicate
formulations) become completely opaque and act as an absolute
barrier to light wave absorption above 2.5 μm. For thermal imaging
and security applications operating in the Long-Wave Infrared
spectrum (8 - 14 μm), specialized semiconductor substrates are
mandatory. Germanium (Ge) features a vast transmission window extending from 2.0 μm out to
16.0 μm and boasts an exceptionally high refractive index, making
it the premier material for elite thermal imaging and infrared beam splitting architectures. Q2: How does the Fresnel design benefit a 3mm to 100mm Cube
configuration? A: In large aperture systems (up to 100mm), a solid Germanium prism is extremely heavy and prone to severe
internal absorption losses because of the thick layer of material
the light must travel through. The Fresnel design breaks down the continuous curved surface of a classic lens
into a series of concentric, low-profile rings. This allows us to
manufacture a Ge Optical Prism that maintains an ultra-thin profile across all sizes from 3mm To 100mm, drastically minimizing the optical absorption path length,
maximizing thermal light transmission, and cutting raw material
costs significantly. Q3: How do you protect the delicate micro-grooves of the Fresnel
prism from harsh field conditions? A: Germanium is a relatively soft element (Vickers ≈ 780) and can be
susceptible to environmental erosion. To guarantee absolute
survivability, the structured surfaces of our Fresnel 90 Degree cubes are treated with a specialized Diamond-Like Carbon (DLC)
hard coating. This thin-film layer approaches the physical hardness
of natural diamond, providing complete protection for the Cube against scratching from blowing sand, saltwater corrosion,
chemical solvents, and high humidity, ensuring long-term deployment
in marine or desert theaters. Q4: Can these Ge Optical Prisms handle dual-band infrared (MWIR and
LWIR) requirements? A: Yes. While standard configurations are optimized for the 8 - 14 μm
LWIR band, monocrystalline Germanium naturally transmits Mid-Wave
Infrared (MWIR, 3 - 5 μm) light as well. By altering our
single-point diamond turning (SPDT) groove geometry and applying
custom multi-layer broadband anti-reflection (BBAR) thin films, our
engineering team can custom-tune the Custom Optical Prism to operate across both bands simultaneously. This makes it an
ideal fit for dual-band thermal sensors and advanced fusion imaging
platforms. |
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| Product Tags: Ge Optical Prism Cube 100mm optical prism cube 3mm glass cube prism |
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