Micro Prisms

  • Coated and Uncoated
  • Nine standard sizes available: 0.5, 0.7, 1.0, 1.5, 2.0, 2.5, 3.0, 4.0 and 5.0mm
  • 45° – 90° – 45°
  • Uncoated or Enhanced Aluminum on hypotenuse.
  • Use for concept testing or production
  • Low Cost

Product Description

Tower Optical Corp. has expanded its line of precision optics to include standard micro prisms, coated and uncoated, for use with laser sources and imaging applications. The micro prisms are right angle, 45°-90°-45° prisms, whose sizes range from 0.5mm to 5.0mm with a format of A=B=C.

These Right Angle Prisms are used to deflect a light beam 90° or 180° as shown above. Depending on prism orientation, images will be inverted, but correct left to right. If the prism is rotated 90°, images viewed through it will be erect, but reversed left to right.

Coated prisms can also be used as mirror reflectors with respect to incoming light. Uncoated prisms act as mirrors for light incident on one of the short sides since incident light is totally internally reflected at the hypotenuse.

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Material: BK-7
Sizes: Nine as follows: 0.5mm, 0.7mm, 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, 4.0mm and 5.0mm
Dimensional Tolerance:
For 0.5 and 0.7mm: ±0.05mm
For balance: =+0.0, -0.2mm
Angular Tolerance: ±3 arc minutes
Surface Quality/Scratch & Dig: 40-20
Corner chips: None allowed
Coating: MPCH Series = Enhanced Aluminum, MPU Series = None
Clear Aperture: >80%
Flatness: λ/2 @ 632.8nm
Bevel: Allowed up to 0.1mm
Refractive index: BK7: 1.517nd

Pricing and ordering info – Must include Part Number

Size (A=B=C) Model Number
Part Number
Price 1-9 Model Number
Part Number
0.5mm MPU-0.5 4531-0001


MPCH-0.5 4531-0020 $69
0.7mm MPU-0.7 4531-0002 $39 MPCH-0.7 4531-0021 $69
1.0mm MPU-1.0 4531-0003 $36 MPCH-1.0 4531-0022 $63
1.5mm MPU-1.5 4531-0004 $36 MPCH-1.5 4531-0023 $63
2.0mm MPU-2.0 4531-0005 $33 MPCH-2.0 4531-0024 $63
2.5mm MPU-2.5 4531-0006 $33 MPCH-2.5 4531-0025 $63
3.0mm MPU-3.0 4531-0007 $30 MPCH-3.0 4531-0026 $60
4.0mm MPU-4.0 4531-0008 $30 MPCH-4.0 4531-0028 $60
5.0mm MPU-5.0 4531-0009 $29 MPCH-5.0 4531-0029 $60

Contact factory for quantity pricing or special coatings.

We make custom versions of everything on this site. Send us your drawings or specifications and we will provide a quotation.