Knife Edge Right Angle Prisms

KRPB - KRPB4

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KRPB - KRPB4

The knife edge prism is polished to the sharp edges of the right angle surfaces and have no chamfers on these edges.

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Name Coating Length Material Delivery Price Add to cart

Knife Edge Right Angle Prism 15mm λ/10
KRPB-15-10H

Uncoated

15mm

BK7

3-5 days

£156.40

Material	BK7 (Refractive index n_d＝1.517)
Ridge Processing	Right-angle ridge ; knike edge (Not chamfered) Other ridge ; Chamfered
Coating	Uncoated (3 surfaces)
A＝B	15mm
Surface flatness of substrate	λ/10
Angle tolerance (90°)	±5″
Angle tolerance (45°)	±30″
Surface Quality (Scratch-Dig)	10−5

Knife Edge Right Angle Prism 30mm λ/10
KRPB-30-10H

Uncoated

30mm

BK7

3-5 days

£391.00

Material	BK7 (Refractive index n_d＝1.517)
Ridge Processing	Right-angle ridge ; knike edge (Not chamfered) Other ridge ; Chamfered
Coating	Uncoated (3 surfaces)
A＝B	30mm
Surface flatness of substrate	λ/10
Angle tolerance (90°)	±5″
Angle tolerance (45°)	±30″
Surface Quality (Scratch-Dig)	10−5

Knife Edge Right Angle Prism 10mm λ/4 Protected Aluminum Coated
KRPB4-10-550

Protected Aluminum

10mm

BK7

6-12 weeks

£86.90

Material	BK7 (Refractive index n_d＝1.517)
Ridge Processing	Right-angle ridge ; knike edge (Not chamfered) Other ridge ; Chamfered
Coating	2-surface that make up the right angle ; Al+MgF₂ (Protected Aluminum) Obliquity ; Uncoated
Laser Damage Threshold	0.25J/cm²
A＝B	10mm
Surface flatness of substrate	λ/4
Angle tolerance (90°)	±1′
Angle tolerance (45°)	±1′
Surface Quality (Scratch-Dig)	40−20

Knife Edge Right Angle Prism 25mm λ/4 Protected Aluminum Coated
KRPB4-25-550

Protected Aluminum

25mm

BK7

6-12 weeks

£243.30

Material	BK7 (Refractive index n_d＝1.517)
Ridge Processing	Right-angle ridge ; knike edge (Not chamfered) Other ridge ; Chamfered
Coating	2-surface that make up the right angle ; Al+MgF₂ (Protected Aluminum) Obliquity ; Uncoated
Laser Damage Threshold	0.25J/cm²
A＝B	25mm
Surface flatness of substrate	λ/4
Angle tolerance (90°)	±1′
Angle tolerance (45°)	±1′
Surface Quality (Scratch-Dig)	40−20

Knife Edge Right Angle Prism 15mm λ/4
KRPB-15-4M

Uncoated

15mm

BK7

3-5 days

£75.40

Material	BK7 (Refractive index n_d＝1.517)
Ridge Processing	Right-angle ridge ; knike edge (Not chamfered) Other ridge ; Chamfered
Coating	Uncoated (3 surfaces)
A＝B	15mm
Surface flatness of substrate	λ/4
Angle tolerance (90°)	±1′
Angle tolerance (45°)	±1′
Surface Quality (Scratch-Dig)	10−5

Knife Edge Right Angle Prism 30mm λ/4
KRPB-30-4M

Uncoated

30mm

BK7

3-5 days

£312.80

Material	BK7 (Refractive index n_d＝1.517)
Ridge Processing	Right-angle ridge ; knike edge (Not chamfered) Other ridge ; Chamfered
Coating	Uncoated (3 surfaces)
A＝B	30mm
Surface flatness of substrate	λ/4
Angle tolerance (90°)	±1′
Angle tolerance (45°)	±1′
Surface Quality (Scratch-Dig)	10−5

Knife Edge Right Angle Prism 20mm λ/10
KRPB-20-10H

Uncoated

20mm

BK7

3-5 days

£260.60

Material	BK7 (Refractive index n_d＝1.517)
Ridge Processing	Right-angle ridge ; knike edge (Not chamfered) Other ridge ; Chamfered
Coating	Uncoated (3 surfaces)
A＝B	20mm
Surface flatness of substrate	λ/10
Angle tolerance (90°)	±5″
Angle tolerance (45°)	±30″
Surface Quality (Scratch-Dig)	10−5

Knife Edge Right Angle Prism 15mm λ/4 Protected Aluminum Coated
KRPB4-15-550

Protected Aluminum

BK7

6-12 weeks

£126.20

Material	BK7 (Refractive index n_d＝1.517)
Ridge Processing	Right-angle ridge ; knike edge (Not chamfered) Other ridge ; Chamfered
Coating	2-surface that make up the right angle ; Al+MgF₂ (Protected Aluminum) Obliquity ; Uncoated
Laser Damage Threshold	0.25J/cm²
A＝B	15mm
Surface flatness of substrate	λ/4
Angle tolerance (90°)	±1′
Angle tolerance (45°)	±1′
Surface Quality (Scratch-Dig)	40−20

Knife Edge Right Angle Prism 30mm λ/4 Protected Aluminum Coated
KRPB4-30-550

Protected Aluminum

30mm

BK7

6-12 weeks

£338.90

Material	BK7 (Refractive index n_d＝1.517)
Ridge Processing	Right-angle ridge ; knike edge (Not chamfered) Other ridge ; Chamfered
Coating	2-surface that make up the right angle ; Al+MgF₂ (Protected Aluminum) Obliquity ; Uncoated
Laser Damage Threshold	0.25J/cm²
A＝B	30mm
Surface flatness of substrate	λ/4
Angle tolerance (90°)	±1′
Angle tolerance (45°)	±1′
Surface Quality (Scratch-Dig)	40−20

Knife Edge Right Angle Prism 20mm λ/4
KRPB-20-4M

Uncoated

20mm

BK7

3-5 days

£88.60

Material	BK7 (Refractive index n_d＝1.517)
Ridge Processing	Right-angle ridge ; knike edge (Not chamfered) Other ridge ; Chamfered
Coating	Uncoated (3 surfaces)
A＝B	20mm
Surface flatness of substrate	λ/4
Angle tolerance (90°)	±1′
Angle tolerance (45°)	±1′
Surface Quality (Scratch-Dig)	10−5

Knife Edge Right Angle Prism 10mm λ/10
KRPB-10-10H

Uncoated

10mm

BK7

3-5 days

£104.30

Material	BK7 (Refractive index n_d＝1.517)
Ridge Processing	Right-angle ridge ; knike edge (Not chamfered) Other ridge ; Chamfered
Coating	Uncoated (3 surfaces)
A＝B	10mm
Surface flatness of substrate	λ/10
Angle tolerance (90°)	±5″
Angle tolerance (45°)	±30″
Surface Quality (Scratch-Dig)	10−5

Knife Edge Right Angle Prism 25mm λ/10
KRPB-25-10H

Uncoated

25mm

BK7

3-5 days

£338.90

Material	BK7 (Refractive index n_d＝1.517)
Ridge Processing	Right-angle ridge ; knike edge (Not chamfered) Other ridge ; Chamfered
Coating	Uncoated (3 surfaces)
A＝B	25mm
Surface flatness of substrate	λ/10
Angle tolerance (90°)	±5″
Angle tolerance (45°)	±30″
Surface Quality (Scratch-Dig)	10−5

Knife Edge Right Angle Prism 20mm λ/4 Protected Aluminum Coated
KRPB4-20-550

Protected Aluminum

20mm

BK7

3-5 days

£187.00

Material	BK7 (Refractive index n_d＝1.517)
Ridge Processing	Right-angle ridge ; knike edge (Not chamfered) Other ridge ; Chamfered
Coating	2-surface that make up the right angle ; Al+MgF₂ (Protected Aluminum) Obliquity ; Uncoated
Laser Damage Threshold	0.25J/cm²
A＝B	20mm
Surface flatness of substrate	λ/4
Angle tolerance (90°)	±1′
Angle tolerance (45°)	±1′
Surface Quality (Scratch-Dig)	40−20

Knife Edge Right Angle Prism 10mm λ/4
KRPB-10-4M

Uncoated

10mm

BK7

3-5 days

£65.40

Material	BK7 (Refractive index n_d＝1.517)
Ridge Processing	Right-angle ridge ; knike edge (Not chamfered) Other ridge ; Chamfered
Coating	Uncoated (3 surfaces)
A＝B	10mm
Surface flatness of substrate	λ/4
Angle tolerance (90°)	±1′
Angle tolerance (45°)	±1′
Surface Quality (Scratch-Dig)	10−5

Knife Edge Right Angle Prism 25mm λ/4
KRPB-25-4M

Uncoated

25mm

BK7

3-5 days

£217.20

Material	BK7 (Refractive index n_d＝1.517)
Ridge Processing	Right-angle ridge ; knike edge (Not chamfered) Other ridge ; Chamfered
Coating	Uncoated (3 surfaces)
A＝B	25mm
Surface flatness of substrate	λ/4
Angle tolerance (90°)	±1′
Angle tolerance (45°)	±1′
Surface Quality (Scratch-Dig)	10−5

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◦With knife edge prism having no coating (KRPB) by using light in the range of 0±5.7 degrees angle of incidence to the slope surface the total reflection critical angle is obtained.