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BK7 and fused silica are the primary materials for high-precision roof prisms (Amici prisms), which deviate light by

90 raised to the composed with power

and invert the image. BK7 offers a cost-effective, high-transmission solution for visible/NIR light, while fused silica provides superior UV transmission, thermal stability, and high-power laser resistance.

BK7 Glass Roof Prisms (N-BK7)

Feature	BK7 (N-BK7)	Fused Silica
Cost	Low	High
Thermal Stability	Moderate	Excellent
Transmission	Visible/NIR	UV/Visible/NIR
Hardness	Softer	Harder

Comparison of Different Materials for Custom Optical Prisms
Oct 24, 2025 — Key Takeaways * Picking the best material for optical prisms is very important. It helps get clear and correct results in many use...
Band Optics
Schott N-BK7 Glass Explained: Why It is the Gold Standard
How to Choose the Right Optical Prism?
Substrate Material Prisms are made from different materials based on operational requirements: BK7 Glass: Standard material offeri...
MOK Optics

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Roof Prism, BK7, Sapphire, Fused Silica

Creator Optics

https://www.creatoroptics.com › E-P4_p

Creator Optics

https://www.creatoroptics.com › E-P4_p

Creator Optics provides various customized optical BK7 roof prisms, fused silica roof prisms, sapphire roof prisms and other customized prisms.

ROOF PRISMS(Bk7 and Fused silica)

ultiquestcom.com

https://ultiquestcom.com › pdf › bk7-fusedsilica-r...

ultiquestcom.com

https://ultiquestcom.com › pdf › bk7-fusedsilica-r...

PDF

Roof prisms are suitable for applications that demand both Right Angle deflection and image erection (a combination left-to-right angle deflection and a top-to- ...Read more

BK7 and Fused Silica Glass Roof Prisms

wts photonics co.,ltd

https://www.wts-photonics.com › product › bk7-and-fu...

wts photonics co.,ltd

https://www.wts-photonics.com › product › bk7-and-fu...

Through the precise prism structure design, it can efficiently capture and refract natural light, break through the limitations of traditional skylights, and ...

BK7 Optical Glass Roof Prism

Yutai Optics

https://www.ytoptics.com › prisms › bk7_optical_glass_r...

Yutai Optics

https://www.ytoptics.com › prisms › bk7_optical_glass_r...

What are the core features of roof prisms? Image orthogonality: maintains the left-right and up-down orientation of the image in line with the original.Read more

OEM Roof Prism, Roof Prism Manufacturer

Betensh Optics

https://www.betenshoptics.com › roof-prism

Betensh Optics

https://www.betenshoptics.com › roof-prism

Hot Tags : BK7 And Fused Silica Glass Roof Prisms Roof Prisms manufacturer/suppliers optical roof prism with coating N-BK7 roof Prisms High Precision roof Prism ...Read more

Roof Prism - Micro-Optics

Del Mar Photonics

http://www.dmphotonics.com › Micro-Optics › Roof Prism

Del Mar Photonics

http://www.dmphotonics.com › Micro-Optics › Roof Prism

Materials: BK7 glass; fused silica; sapphire; other customized optical glass also available; Coating: multi-layer BBAR coating, single-layer AR coating, ...Read more

BK7 And Fused Silica Glass Dove Prisms

UNI Optics

https://www.uni-optics.com › Optical Prisms

UNI Optics

https://www.uni-optics.com › Optical Prisms

A Dove prism is used to rotate, invert, or retroreflect an image,when the prism is rotated about its length axis,the image viewed through the prism rotates at ...Read more

High accuracy N-BK7 & Fused silica wedge prisms

CRYSMIT OPTICS

https://www.crysmit.com › Wedge

CRYSMIT OPTICS

https://www.crysmit.com › Wedge

CRYSMIT offer High accuracy N-BK7 & Fused silica wedge prisms for Experimental and Precision Instruments. The wedge prism with the plane surfaces at slight ...Read more

Roof prism-Changchun Weilai Optics Co., Ltd.

fuoptics.com

https://www.fuoptics.com › productinfo

fuoptics.com

https://www.fuoptics.com › productinfo

Dove prism ; Material. H-K9L (Schott BK7)/Fused Silica/Glass ; Dimension Tolerance. ±0.1mm.Read more

Right-Angle Prisms

Thorlabs

https://www.thorlabs.com › right-angle-prisms