Right-angle prisms

Enlarge main image

Description

For 90° turning of a beam, these prisms are easier to mount and to clean than mirrors. Uncoated prisms give total internal reflection (100%), if kept clean, up to the critical angle, corresponding to 5.7° externally for BK7 and 2.5° for silica (at 587nm).

The AR-coated range achieves 99% overall efficiency with multilayer coatings for 450-900nm on the entry/exit faces.

The Protected range have the hypotenuse aluminised and black painted (R = 85% approx.) for use at larger incident angles or in wet or dirty conditions.

The External reflection range have protected aluminium on the hypotenuse for use as mirrors.

BK7 prisms are offered in two grades for general use, and UV-silica prisms for wavelengths down to 170nm and for use at high temperatures etc.

Specification

Options

More information

Angles (between polished faces)
Precision Standard	±1min. ±5min.
Flatness (over inscribed ellipse)
Precision Standard	λ/4 1λ
Dimensions:
Precision Standard	±0.1mm ±0.1mm (≤4mm) ±0.2mm (>4mm)
Scratch-dig	40-20 See specifications for details
Material data	See optical materials for details

More...

Coating options: internal aluminium, external aluminium, multi AR

For more details of your modification needs please enquire.

More...

Crown prisms for visible and IR use (RQ,RX)
UV-silica prisms for UV/high temperatures use (RS)

More...

Item code	Entry face size (mm)	Coating type	Type	Material	Price per item (£ GBP)	Select amount
25 RQ 00	25 x 25	Uncoated	Standard	BK7	£39.20
40 RX 00	40 x 40	Uncoated	Precision	BK7	£101.16
40 RX 01	40 x 40	AR coated 450-900nm	Precision	BK7	£121.12
40 RX 02	40 x 40	Protected	Precision	BK7	TBA	Send us a stock query
40 RX 03	40 x 40	External reflection	Precision	BK7	TBA	Send us a stock query
025 RQ 00	2.5 x 2.5	Uncoated	Standard	BK7	£40.78
04 RQ 00	4 x 4	Uncoated	Standard	BK7	£33.88
04 RQ 01	4 x 4	AR coated 450-900nm	Standard	BK7	£45.62
04 RQ 02	4 x 4	Protected	Standard	BK7	TBA	Send us a stock query
06 RQ 00	6.3 x 6.3	Uncoated	Standard	BK7	£27.83
06 RQ 01	6.3 x 6.3	AR coated 450-900nm	Standard	BK7	£39.81
06 RQ 02	6.3 x 6.3	Protected	Standard	BK7	£36.06
06 RQ 03	6.3 x 6.3	External reflection	Standard	BK7	£36.06
10 RQ 00	10 x 10	Uncoated	Standard	BK7	£25.65
10 RQ 01	10 x 10	AR coated 450-900nm	Standard	BK7	£38.24
25 RX 03	25 x 25	External reflection	Precision	BK7	£59.17
25 RX 02	25 x 25	Protected	Precision	BK7	TBA	Send us a stock query
06 RX 00	6.3 x 6.3	Uncoated	Precision	BK7	TBA	Send us a stock query
06 RX 01	6.3 x 6.3	AR coated 450-900nm	Precision	BK7	TBA	Send us a stock query
06 RX 02	6.3 x 6.3	Protected	Precision	BK7	£42.83
06 RX 03	6.3 x 6.3	External reflection	Precision	BK7	£42.83
10 RX 00	10 x 10	Uncoated	Precision	BK7	£32.67
10 RX 01	10 x 10	AR coated 450-900nm	Precision	BK7	£44.04
10 RX 02	10 x 10	Protected	Precision	BK7	£40.29
10 RX 03	10 x 10	External reflection	Precision	BK7	£40.29
16 RX 00	16 x 16	Uncoated	Precision	BK7	£38.72
16 RX 01	16 x 16	AR coated 450-900nm	Precision	BK7	£50.58
16 RX 02	16 x 16	Protected	Precision	BK7	£46.71
16 RX 03	16 x 16	External reflection	Precision	BK7	TBA	Send us a stock query
25 RX 00	25 x 25	Uncoated	Precision	BK7	£52.15
25 RX 01	25 x 25	AR coated 450-900nm	Precision	BK7	£63.89
10 RQ 02	10 x 10	Protected	Standard	BK7	£33.76
10 RQ 03	10 x 10	External reflection	Standard	BK7	£33.76
40 RQ 00	40 x 40	Uncoated	Standard	BK7	£78.29
40 RQ 01	40 x 40	AR coated 450-900nm	Standard	BK7	£104.42
40 RQ 02	40 x 40	Protected	Standard	BK7	£97.65
50 RQ 00	50 x 50	Uncoated	Standard	BK7	£125.11
63 RQ 00	63 x 63	Uncoated	Standard	BK7	£170.25
06 RS 00	6.3 x 6.3	Uncoated	Precision	UV-silica	£51.43
06 RS 02	6.3 x 6.3	Protected	Precision	UV-silica	£66.79
10 RS 00	10 x 10	Uncoated	Precision	UV-silica	£68.37
10 RS 02	10 x 10	Protected	Precision	UV-silica	£87.00
16 RS 00	16 x 16	Uncoated	Precision	UV-silica	£87.36
16 RS 02	16 x 16	Protected	Precision	UV-silica	£107.09
25 RS 00	25 x 25	Uncoated	Precision	UV-silica	£114.59
25 RS 02	25 x 25	Protected	Precision	UV-silica	£148.83
40 RS 00	40 x 40	Uncoated	Precision	UV-silica	£276.49
32 RQ 00	31.5 x 31.5	Uncoated	Standard	BK7	£49.85
25 RQ 03	25 x 25	External reflection	Standard	BK7	£48.76
12 RQ 00	12.5 x 12.5	Uncoated	Standard	BK7	£25.65
12 RQ 01	12.5 x 12.5	AR coated 450-900nm	Standard	BK7	£39.81
12 RQ 02	12.5 x 12.5	Protected	Standard	BK7	TBA	Send us a stock query
12 RQ 03	12.5 x 12.5	External reflection	Standard	BK7	£35.33
16 RQ 00	16 x 16	Uncoated	Standard	BK7	£27.23
16 RQ 01	16 x 16	AR coated 450-900nm	Standard	BK7	£41.14
16 RQ 02	16 x 16	Protected	Standard	BK7	£35.33
16 RQ 03	16 x 16	External reflection	Standard	BK7	TBA	Send us a stock query
20 RQ 00	20 x 20	Uncoated	Standard	BK7	£32.55
20 RQ 01	20 x 20	AR coated 450-900nm	Standard	BK7	£47.19
20 RQ 02	20 x 20	Protected	Standard	BK7	TBA	Send us a stock query
20 RQ 03	20 x 20	External reflection	Standard	BK7	£44.65
25 RQ 01	25 x 25	AR coated 450-900nm	Standard	BK7	£55.90
25 RQ 02	25 x 25	Protected	Standard	BK7	TBA	Send us a stock query
40 RS 02	40 x 40	Protected	Precision	UV-silica	£359.25

For more information regarding stock availability icons, please see our shipping page.