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Penta Prisms, Solid Glass Retroreflectors

Penta Prisms, Solid Glass Retroreflectors

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Penta Prisms, Solid Glass Retroreflectors

Product catalog summary

Penta Prisms

Provide precise 90° beam deviation without image inversion or reversal.
Accuracy of 30 arc seconds.
Insensitive to alignment, making them suitable for applications requiring exact 90° deviation.
Available in sizes 12.7 mm and 25.4 mm.

Specifications:

Material: BK 7, grade A, fine annealed optical glass.
Surface Flatness: ≤λ/4 at 632.8 nm.
Clear Aperture: Central diameter > 85% of dimension.
Surface Quality: 40-20 scratch-dig.
Beam Deviation: 90° ± 30 arc sec.
Dimensions Tolerance: +0/-0.15 mm.
Chamfers: 0.25-0.50 mm face width x 45° ±15°.
Coating: Protected aluminum with black paint overcoat.
Cleaning: Non-abrasive method recommended.
Damage Threshold: 100 W/cm² CW, 10 mJ/cm² with 10 nsec pulses at 532 nm.

Ordering Information:

Model BPP-12.7: 12.7 mm dimensions.
Model BPP-25.4: 25.4 mm dimensions.

Solid Glass Retroreflectors

Provide 180° reflection independent of angle of incidence.
Accuracy of 2 arc seconds.
Image is inverted and reversed, useful for applications requiring exact 180° reflection.
Available in sizes 6.35 mm, 12.7 mm, and 25.4 mm.

Specifications:

Material: BK 7, grade A, fine annealed optical glass.
Surface Flatness: ≤ λ/4 at 632.8 nm.
Clear Aperture: Central diameter > 85% of dimension.
Surface Quality: 40-20 scratch-dig.
Reflected Beam Deviation: 180° ±2 arc sec.
Dimensions Tolerance: +0/-0.15 mm.
Chamfers: 0.1 mm face width x 45° ±15°.
Cleaning: Non-abrasive method recommended.

Ordering Information:

Model BGR-6.35: Diameter 6.35 mm, Height 5.0 mm.
Model BGR-12.7: Diameter 12.7 mm, Height 9.5 mm.
Model BGR-25.4: Diameter 25.4 mm, Height 19.0 mm.

Catalog excerpts

Penta Prisms, Solid Glass Retroreflectors -1

602 Phone: 1-800-222-6440 • Fax: 1-949-253-1680 PRISMS WINDOWS FILTERS AND ATTENUATORS BEAMSPLITTERS POLARIZATION OPTICS DIFFRACTION GRATINGS ULTRAFAST LASER OPTICS ACCESSORIES O p t i c s Penta Prisms • Precise 90° beam deviation • 30 arc sec accuracy • Image neither inverted nor reversed • Insensitive to alignment Penta prisms deviate a line of sight or input beam by precisely 90° without inverting or reversing the image, making them valuable for applications requiring an exact 90° deviation without having to orient the prism precisely. We offer 12.7 and 25.4 mm sizes. Specifications Material BK 7, grade A, fine annealed optical glass or equivalent Surface Flatness ë/4 at 632.8 nm over the clear aperture Clear Aperture Central diameter, > 85% of dimension Surface Quality 40-20 scratch-dig Beam Deviation 90° ± 30 arc sec Dimensions Tolerance +0/-0.15 mm Chamfers 0.25-0.50 mm face width x 45° ±15° Coating Protection Protected aluminum with black paint overcoat Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended (see page 688) Damage Threshold 100 W/cm2 CW, 10 mJ/cm2 with 10 nsec pulses at 532 nm, typical Ordering Information Model Dimensions, A=B=C (mm) BPP-12.7 12.7 BPP-25.4 25.4 A C B Aluminized Aluminized Solid Glass Retroreflectors • 180° reflection independent of angle of incidence • 2 arc sec accuracy • Image inverted and reversed Sometimes called corner cubes, retroreflectors reflect entering light back 180°, and parallel to the original beam, while both inverting and reversing the image—regardless of its orientation to the beam. This makes retroreflectors valuable for applications requiring an exact 180° reflection without having to precisely orient the prism. Available in 6.35, 12.7, and 25.4 mm sizes. Specifications Material BK 7, grade A, fine annealed optical glass or equivalent Surface Flatness ë/4 at 632.8 nm over the clear aperture Clear Aperture Central diameter, > 85% of dimension Surface Quality 40-20 scratch-dig Reflected Beam Deviation 180° ±2 arc sec Dimensions Tolerance +0/-0.15 mm Chamfers 0.1 mm face width x 45° ±15° Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended (see page 688) Ordering Information Model Diameter (mm) Height (mm) BGR-6.35 6.35 5.0 BGR-12.7 12.7 9.5 BGR-25.4 25.4 19.0 HEIGHT DIA

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