Right-Angle Prisms

BK 7 or UV fused silica
Excellent for beam bending and retroreflection applications
Available in different sizes from 3.2 mm to 50.8 mm
AR coatings improve transmission
Optional aluminized hypotenuse avilable for HT and VALUMAX^® prisms

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Overview
Specifications
Ordering
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These right-angle prisms are precision polished to tight tolerances for more demanding applications. They are available in either BK 7 or UV grade fused silica. BK 7 prisms are recommended for general laboratory use in the visible and near IR. For UV, infrared, or thermally sensitive applications fused silica prisms are advised. Our fused silica prisms are manufactured to exacting specifications and are useful from 185 nm–2.1 µm.

VALUMAX^® right-angle prisms are ideal for beam bending and retroreflection applications. They are often used instead of mirrors in applications where deformation of the reflective surface may cause a problem. The fine balance between performance and cost has been optimized, making these prisms ideal for OEM applications in the visible and near infrared regions.

By means of total internal reflection (TIR), a right-angle prism may be used as a 90° reflector or as a 180° retroreflector. Except for reflection losses from the entry and exit faces, TIR exhibits 100% reflectivity over a very broad wavelength range. The reflecting surface should be coated with protected aluminum if the incidence angle exceeds that acceptable for TIR or if the environment does not allow the reflecting surface to be kept clean, as TIR requires. The hypotenuse can also be used as a first surface reflector. In this case, the overcoat of black paint should be removed with acetone.

Right-angle prisms are available in many different sizes from 3.20 mm to 50.8 mm with a selection of antireflection coatings. The antireflection coatings reduce surface losses yet do not affect total internal reflection or the acceptance angle. Hence, maximum versatility is achieved by coating all prism faces.

Specifications

	Precision Series	HT Series	VALUMAX^® series
Material	BK 7, grade A, precision annealed optical glass UV grade fused silica	N-BK7	BK 7, grade A, fine annealed optical glass
Surface Flatness	Specifications below at 632.8 nm over the clear aperture	λ/8 over the clear aperture	≤λ/2 at 632.8 nm over the clear aperture
Clear Aperture	≥central 80%		Central diameter, >85% of dimension
Beam Deviation	<3 arc min
Dimensions	+0.00/-0.25 mm	+0.00/-0.10 mm	+0/-0.25 mm
Chamfers	0.25–0.50 mm face width x 45° ±15°	0.3 mm x 45°	0.25–0.50 mm face width
Antireflection Coating	Uncoated or three faces multilayer AR coated ( see Broadband Multilayer Antireflection Coatings and see Laser Line Antireflection V-Coatings for specifications)	Uncoated, Aluminzed Hypotenuse, or Aluminized Hypotenuse with AR.14 Coated faces	Uncoated or hypotenuse coated with protected aluminum and overcoated with black paint (remove with acetone for first surface mirror)
Cleaning	Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended (see Care and Cleaning of Optics)
Damage Threshold	AR.14 , 1000 W/cm², 2 J/cm² with 10 nsec pulses @ 532 nm, typical AR.16 , 1000 W/cm², 2 J/cm² with 10 nsec pulses @ 1064 nm, typical AR.18 , 1000 W/cm², 2 J/cm² with 10 nsec pulses @ 1064 nm, typical AR.33 , 2000 W/cm², 3 J/cm² with 10 nsec pulses @ 1064 nm, typical	AR.14 , 1000 W/cm², 2 J/cm² with 10 nsec pulses @ 532 nm, typical	Aluminized hypotenuse, 100 W/cm² CW, 10 mJ/cm² with 10 nsec pulses, typical

Precision Series Specifications Table

Model	Dimensions, A=B=C (mm)	Material	Surface Flatness	Surface Quality
Model	Dimensions, A=B=C (mm)	Material	Surface Flatness	Surface Quality
05BR08	12.7	Grade A BK7	λ/4 at 632.8 nm	20-10
05SR20	12.7	UV grade fused silica	λ/10 at 632.8 nm	10-5
10BR08	25.4	Grade A BK7	λ/4 at 632.8 nm	20-10
10SR20	25.4	UV grade fused silica	λ/10 at 632.8 nm	10-5
10SR25	25.0	UV Grade Fused Silica	λ/10 at 632.8 nm	20-10
10SR25AR.14	25.0	UV Grade Fused Silica	λ/10 at 632.8 nm	20-10

HT Series Specifications Table

Model	Dimensions, A=B=C (mm)	Coating
Model	Dimensions, A=B=C (mm)	Coating
BRAP10-A	3.20	Aluminized Hypotenuse
BRAP10-AV	3.20	Aluminized Hypotenuse, AR.14 Coated Legs
BRAP11-A	5.00	Aluminized Hypotenuse
BRAP11	5.00	Uncoated
BRAP11-AV	5.00	Aluminized Hypotenuse, AR.14 Coated Legs
BRAP12-A	7.00	Aluminized Hypotenuse
BRAP12	7.00	Uncoated
BRAP12-AV	7.00	Aluminized Hypotenuse, AR.14 Coated Legs
BRAP13-A	10.00	Aluminized Hypotenuse
BRAP13	10.00	Uncoated
BRAP13-AV	10.00	Aluminized Hypotenuse
BRAP14-A	12.50	Aluminized Hypotenuse
BRAP14	12.50	Uncoated
BRAP14-AV	12.50	Aluminized Hypotenuse, AR.14 Coated Legs
BRAP15-A	15.00	Aluminized Hypotenuse
BRAP15	15.00	Uncoated
BRAP15-AV	15.00	Aluminized Hypotenuse, AR.14 Coated Legs
BRAP16-A	20.00	Aluminized Hypotenuse
BRAP16	20.00	Uncoated
BRAP16-AV	20.00	Aluminized Hypotenuse, AR.14 Coated Legs
BRAP17-A	25.00	Aluminized Hypotenuse
BRAP17	25.00	Uncoated
BRAP17-AV	25.00	Aluminized Hypotenuse, AR.14 Coated Legs
BRAP18-A	30.00	Aluminized Hypotenuse
BRAP18	30.00	Uncoated
BRAP18-AV	30.00	Aluminized Hypotenuse, AR.14 Coated Legs
BRAP19-A	50.00	Aluminized Hypotenuse
BRAP19	50.00	Uncoated
BRAP19-AV	50.00	Aluminized Hypotenuse, AR.14 Coated Legs

VALUMAX^® series Specifications Table

Model	Dimensions, A=B=C (mm)	Coating
Model	Dimensions, A=B=C (mm)	Coating
BRP-5	5.0	Uncoated
BRP-10	10.0	Uncoated
BRP-12.7	12.7	Uncoated
BRP-15	15.0	Uncoated
BRP-20	20.0	Uncoated
BRP-25.4	25.4	Uncoated
BRP-30	30.0	Uncoated
BRP-40	40.0	Uncoated
BRP-50.8	50.8	Uncoated
BRP-5-A	5.0	Aliminized Hypotenuse
BRP-10-A	10.0	Aliminized Hypotenuse
BRP-12.7-A	12.7	Aliminized Hypotenuse
BRP-15-A	15.0	Aliminized Hypotenuse
BRP-20-A	20.0	Aliminized Hypotenuse
BRP-25.4-A	25.4	Aliminized Hypotenuse
BRP-30-A	30.0	Aliminized Hypotenuse
BRP-40-A	40.0	Aliminized Hypotenuse
BRP-50.8-A	50.8	Aliminized Hypotenuse

Model	Description	avail raw	Availability	price raw	Price	Qty. MULTI ADD
05BR08	Precision Right-Angle Prism, BK7, A=B=C=12.7 mm, λ/4, Uncoated	4	4 Weeks	75	$75.00	ADD
05BR08AR.14	Precision Right-Angle Prism, BK7, A=B=C=12.7 mm, λ/4, 430-700 nm	3	3 Weeks	149	$149.00	ADD
05BR08AR.16	Precision Right-Angle Prism, BK7, A=B=C=12.7 mm, λ/4, 650-1000 nm	13	13 Weeks	179	$179.00	ADD
05BR08AR.18	Precision Right-Angle Prism, BK7, A=B=C=12.7 mm, λ/4, 1000-1550 nm	13	13 Weeks	179	$179.00	ADD
05BR08AR.33	Precision Right-Angle Prism, BK7, A=B=C=12.7 mm, λ/4, 1064 nm	13	13 Weeks	268	$268.98	ADD
05SR20	Right-Angle Prism, UV Fused Silica, A=B=C=12.7 mm, λ/10, Uncoated	3	3 Weeks	299	$299.00	ADD
05SR20AR.14	Right-Angle Prism, UV Fused Silica, A=B=C=12.7 mm, λ/10, 430-700 nm	99	Call	425	$425.00	ADD
05SR20AR.16	Right-Angle Prism, UV Fused Silica, A=B=C=12.7 mm, λ/10, 650-1000 nm	8	8 Weeks	435	$435.00	ADD
05SR20AR.18	Right-Angle Prism, UV Fused Silica, A=B=C=12.7 mm, λ/10, 1000-1550 nm	99	Call	435	$435.00	ADD
05SR20AR.33	Right-Angle Prism, UV Fused Silica, A=B=C=12.7 mm, λ/10, 1064 nm	99	Call	635	$635.00	ADD
10BR08	Precision Right-Angle Prism, BK7, A=B=C=25.4 mm, λ/4, Uncoated	4	4 Weeks	115	$115.00	ADD
10BR08AR.14	Precision Right-Angle Prism, BK7, A=B=C=25.4 mm, λ/4, 430-700 nm	11	11 Weeks	205	$205.00	ADD
10BR08AR.16	Precision Right-Angle Prism, BK7, A=B=C=25.4 mm, λ/4, 650-1000 nm	0	In Stock	230	$230.00	ADD
10BR08AR.18	Precision Right-Angle Prism, BK7, A=B=C=25.4 mm, λ/4, 1000-1550 nm	13	13 Weeks	230	$230.00	ADD
10BR08AR.33	Precision Right-Angle Prism, BK7, A=B=C=25.4 mm, λ/4, 1064 nm	13	13 Weeks	230	$230.00	ADD
10SR20	Right-Angle Prism, UV Fused Silica, A=B=C=25.4 mm, λ/10, Uncoated	3	3 Weeks	436	$436.00	ADD
10SR20AR.14	Right-Angle Prism, UV Fused Silica, A=B=C=25.4 mm, λ/10, 430-700 nm	7	7 Weeks	583	$583.00	ADD
10SR20AR.16	Right-Angle Prism, UV Fused Silica, A=B=C=25.4 mm, λ/10, 650-1000 nm	11	11 Weeks	607	$607.00	ADD
10SR20AR.18	Right-Angle Prism, UV Fused Silica, A=B=C=25.4 mm, λ/10, 1000-1550 nm	0	In Stock	607	$607.00	ADD
10SR20AR.33	Right-Angle Prism, UV Fused Silica, A=B=C=25.4 mm, λ/10, 1064 nm	99	Call	857	$857.00	ADD
10SR25	Right-Angle Prism, UV Fused Silica, A=B=C=25.0 mm, λ/10, Uncoated	3	3 Weeks	210	$210.00	ADD
10SR25AR.14	Right-Angle Prism, UV Fused Silica, A=B=C=25.0 mm, λ/10, AR.14 coated	3	3 Weeks	263	$263.00	ADD
BRAP10-A	High Tolerance Right-Angle Prism, N-BK7, A=B=C=3.20 mm, λ/8, Aluminized Hypotenuse	0	In Stock	100	$100.00	ADD
BRAP10-AV	High Tolerance Right-Angle Prism, N-BK7, A=B=C=3.20 mm, λ/8, Aluminized Hypotenuse, AR.14 Coated faces	0	In Stock	110	$110.00	ADD
BRAP11	High Tolerance Right-Angle Prism, N-BK7, A=B=C=5.00 mm, λ/8, Uncoated	0	In Stock	77	$77.00	ADD
BRAP11-A	High Tolerance Right-Angle Prism, N-BK7, A=B=C=5.00 mm, λ/8, Aluminized Hypotenuse	0	In Stock	83	$83.00	ADD
BRAP11-AV	High Tolerance Right-Angle Prism, N-BK7, A=B=C=5.00 mm, λ/8, Aluminized Hypotenuse, AR.14 Coated faces	0	In Stock	92	$92.00	ADD
BRAP12	High Tolerance Right-Angle Prism, N-BK7, A=B=C=12.50 mm, λ/8, Uncoated	0	In Stock	77	$77.00	ADD
BRAP12-A	High Tolerance Right-Angle Prism, N-BK7, A=B=C=12.50 mm, λ/8, Aluminized Hypotenuse	0	In Stock	83	$83.00	ADD
BRAP12-AV	High Tolerance Right-Angle Prism, N-BK7, A=B=C=12.50 mm, λ/8, Aluminized Hypotenuse, AR.14 Coated faces	0	In Stock	92	$92.00	ADD
BRAP13	High Tolerance Right-Angle Prism, N-BK7, A=B=C=10.00 mm, λ/8, Uncoated	0	In Stock	77	$77.00	ADD
BRAP13-A	High Tolerance Right-Angle Prism, N-BK7, A=B=C=10.00 mm, λ/8, Aluminized Hypotenuse	3	3 Weeks	83	$83.00	ADD
BRAP13-AV	High Tolerance Right-Angle Prism, N-BK7, A=B=C=10.00 mm, λ/8, Aluminized Hypotenuse, AR.14 Coated faces	0	In Stock	92	$92.00	ADD
BRAP14	High Tolerance Right-Angle Prism, N-BK7, A=B=C=12.50 mm, λ/8, Uncoated	0	In Stock	77	$77.00	ADD
BRAP14-A	High Tolerance Right-Angle Prism, N-BK7, A=B=C=12.50 mm, λ/8, Aluminized Hypotenuse	0	In Stock	83	$83.00	ADD
BRAP14-AV	High Tolerance Right-Angle Prism, N-BK7, A=B=C=12.50 mm, λ/8, Aluminized Hypotenuse, AR.14 Coated faces	0	In Stock	92	$92.00	ADD
BRAP15	High Tolerance Right-Angle Prism, N-BK7, A=B=C=15.00 mm, λ/8, Uncoated	0	In Stock	77	$77.00	ADD
BRAP15-A	High Tolerance Right-Angle Prism, N-BK7, A=B=C=15.00 mm, λ/8, Aluminized Hypotenuse	0	In Stock	83	$83.00	ADD
BRAP15-AV	High Tolerance Right-Angle Prism, N-BK7, A=B=C=15.00 mm, λ/8, Aluminized Hypotenuse, AR.14 Coated faces	0	In Stock	92	$92.00	ADD
BRAP16	High Tolerance Right-Angle Prism, N-BK7, A=B=C=20.00 mm, λ/8, Uncoated	0	In Stock	89	$89.00	ADD
BRAP16-A	High Tolerance Right-Angle Prism, N-BK7, A=B=C=20.00 mm, λ/8, Aluminized Hypotenuse	0	In Stock	95	$95.00	ADD
BRAP16-AV	High Tolerance Right-Angle Prism, N-BK7, A=B=C=20.00 mm, λ/8, Aluminized Hypotenuse, AR.14 Coated faces	0	In Stock	104	$104.00	ADD
BRAP17	High Tolerance Right-Angle Prism, N-BK7, A=B=C=25.00 mm, λ/8, Uncoated	0	In Stock	97	$97.00	ADD
BRAP17-A	High Tolerance Right-Angle Prism, N-BK7, A=B=C=25.00 mm, λ/8, Aluminized Hypotenuse	0	In Stock	103	$103.00	ADD
BRAP17-AV	High Tolerance Right-Angle Prism, N-BK7, A=B=C=25.00 mm, λ/8, Aluminized Hypotenuse, AR.14 Coated faces	0	In Stock	113	$113.00	ADD
BRAP18	High Tolerance Right-Angle Prism, N-BK7, A=B=C=30.00 mm, λ/8, Uncoated	0	In Stock	115	$115.00	ADD
BRAP18-A	High Tolerance Right-Angle Prism, N-BK7, A=B=C=30.00 mm, λ/8, Aluminized Hypotenuse	0	In Stock	121	$121.00	ADD
BRAP18-AV	High Tolerance Right-Angle Prism, N-BK7, A=B=C=30.00 mm, λ/8, Aluminized Hypotenuse, AR.14 Coated faces	0	In Stock	130	$130.00	ADD
BRAP19	High Tolerance Right-Angle Prism, N-BK7, A=B=C=50.00 mm, λ/8, Uncoated	0	In Stock	201	$201.00	ADD
BRAP19-A	High Tolerance Right-Angle Prism, N-BK7, A=B=C=50.00 mm, λ/8, Aluminized Hypotenuse	0	In Stock	207	$207.00	ADD
BRAP19-AV	High Tolerance Right-Angle Prism, N-BK7, A=B=C=50.00 mm, λ/8, Aluminized Hypotenuse, AR.14 Coated faces	0	In Stock	217	$217.00	ADD
BRP-10	VALUMAX Right-Angle Prism, BK7, A=B=C=10.0 mm, Uncoated	0	In Stock	65	$65.00	ADD
BRP-10-A	VALUMAX Right-Angle Prism, BK7, A=B=C=10.0 mm, Aluminized Hypotenuse	0	In Stock	80	$80.00	ADD
BRP-12.7	VALUMAX Right-Angle Prism, BK7, A=B=C=12.7 mm, Uncoated	0	In Stock	65	$65.00	ADD
BRP-12.7-A	VALUMAX Right-Angle Prism, BK7, A=B=C=12.7 mm, Aluminized Hypotenuse	0	In Stock	80	$80.00	ADD
BRP-15	VALUMAX Right-Angle Prism, BK7, A=B=C=15.0 mm, Uncoated	0	In Stock	65	$65.00	ADD
BRP-15-A	VALUMAX Right-Angle Prism, BK7, A=B=C=15.0 mm, Aluminized Hypotenuse	0	In Stock	65	$65.00	ADD
BRP-20	VALUMAX Right-Angle Prism, BK7, A=B=C=20.0 mm, Uncoated	0	In Stock	47	$47.00	ADD
BRP-20-A	VALUMAX Right-Angle Prism, BK7, A=B=C=20.0 mm, Aluminized Hypotenuse	0	In Stock	69	$69.00	ADD
BRP-25.4	VALUMAX Right-Angle Prism, BK7, A=B=C=25.4 mm, Uncoated	0	In Stock	66	$66.00	ADD
BRP-25.4-A	VALUMAX Right-Angle Prism, BK7, A=B=C=25.4 mm, Aluminized Hypotenuse	0	In Stock	73	$73.00	ADD
BRP-30	VALUMAX Right-Angle Prism, BK7, A=B=C=30.0 mm, Uncoated	0	In Stock	74	$74.00	ADD
BRP-30-A	VALUMAX Right-Angle Prism, BK7, A=B=C=30.0 mm, Aluminized Hypotenuse	0	In Stock	96	$96.00	ADD
BRP-40	VALUMAX Right-Angle Prism, BK7, A=B=C=40.0 mm, Uncoated	0	In Stock	118	$118.00	ADD
BRP-40-A	VALUMAX Right-Angle Prism, BK7, A=B=C=40.0 mm, Aluminized Hypotenuse	0	In Stock	160	$160.00	ADD
BRP-5	VALUMAX Right-Angle Prism, BK7, A=B=C=5.0 mm, Uncoated	0	In Stock	65	$65.00	ADD
BRP-50.8	VALUMAX Right-Angle Prism, BK7, A=B=C=50.8 mm, Uncoated	0	In Stock	174	$174.00	ADD
BRP-50.8-A	VALUMAX Right-Angle Prism, BK7, A=B=C=50.8 mm, Aluminized Hypotenuse	11	11 Weeks	201	$201.00	ADD
BRP-5-A	VALUMAX Right-Angle Prism, BK7, A=B=C=5.0 mm, Aluminized Hypotenuse	0	In Stock	63	$63.00	ADD