- 通常のビームスプリッター（以降BS）はクロムなどの金属物質をガラス基板上にくまなく成膜してその膜厚差で光量分割比が決まるものが主流ですが、このポルカドットBSは一定間隔・一定量のアルミニウム膜が水玉模様（Polka-Dotとは水玉模様の意）のようにコーティングされていて、その膜厚差に違いを持たせることで光量分割比が決定されるというユニークなBSです。波長範囲は250nm～2000nm仕様と400nm～2000nm仕様の2種類をご用意。光量分割比は下記8種類をご用意しております。
リスト / 型番表
| 光量分割比 (反射/透過) |
仕様 | 型番（上段：UV〜IR仕様、下段：VIS〜IR仕様） | ||||||
| 90/10 | UV〜IR 仕様 |
PDBS-9001-UV | PDBS-9002-UV | PDBS-9003-UV | PDBS-9004-UV | PDBS-9005-UV | PDBS-9006-UV | PDBS-9007-UV |
| VIS〜IR 仕様 |
PDBS-9001 | PDBS-9002 | PDBS-9003 | PDBS-9004 | PDBS-9005 | PDBS-9006 | PDBS-9007 | |
| 80/20 | UV〜IR 仕様 |
PDBS-8011-UV | PDBS-8012-UV | PDBS-8013-UV | PDBS-8014-UV | PDBS-8015-UV | PDBS-8016-UV | PDBS-8017-UV |
| VIS〜IR 仕様 |
PDBS-8011 | PDBS-8012 | PDBS-8013 | PDBS-8014 | PDBS-8015 | PDBS-8016 | PDBS-8017 | |
| 70/30 | UV〜IR 仕様 |
PDBS-7001-UV | PDBS-7002-UV | PDBS-7003-UV | PDBS-7004-UV | PDBS-7005-UV | PDBS-7006-UV | PDBS-7007-UV |
| VIS〜IR 仕様 |
PDBS-7001 | PDBS-7002 | PDBS-7003 | PDBS-7004 | PDBS-7005 | PDBS-7006 | PDBS-7007 | |
| 60/40 | UV〜IR 仕様 |
PDBS-6001-UV | PDBS-6002-UV | PDBS-6003-UV | PDBS-6004-UV | PDBS-6005-UV | PDBS-6006-UV | PDBS-6007-UV |
| VIS〜IR 仕様 |
PDBS-6001 | PDBS-6002 | PDBS-6003 | PDBS-6004 | PDBS-6005 | PDBS-6006 | PDBS-6007 | |
| 50/50 | UV〜IR 仕様 |
PDBS-0001-UV | PDBS-0002-UV | PDBS-0003-UV | PDBS-0004-UV | PDBS-0005-UV | PDBS-0006-UV | PDBS-0007-UV |
| VIS〜IR 仕様 |
PDBS-0001 | PDBS-0002 | PDBS-0003 | PDBS-0004 | PDBS-0005 | PDBS-0006 | PDBS-0007 | |
| 40/60 | UV〜IR 仕様 |
PDBS-0461-UV | PDBS-0462-UV | PDBS-0463-UV | PDBS-0464-UV | PDBS-0465-UV | PDBS-0466-UV | PDBS-0467-UV |
| VIS〜IR 仕様 |
PDBS-0461 | PDBS-0462 | PDBS-0463 | PDBS-0464 | PDBS-0465 | PDBS-0466 | PDBS-0467 | |
| 30/70 | UV〜IR 仕様 |
PDBS-0371-UV | PDBS-0372-UV | PDBS-0373-UV | PDBS-0374-UV | PDBS-0375-UV | PDBS-0376-UV | PDBS-0377-UV |
| VIS〜IR 仕様 |
PDBS-0371 | PDBS-0372 | PDBS-0373 | PDBS-0374 | PDBS-0375 | PDBS-0376 | PDBS-0377 | |
| 20/80 | UV〜IR 仕様 |
PDBS-2001-UV | PDBS-2002-UV | PDBS-2003-UV | PDBS-2004-UV | PDBS-2005-UV | PDBS-2006-UV | PDBS-2007-UV |
| VIS〜IR 仕様 |
PDBS-2001 | PDBS-2002 | PDBS-2003 | PDBS-2004 | PDBS-2005 | PDBS-2006 | PDBS-2007 | |
| サイズ | φ25.4mm | □25.4mm | φ38.0mm | □38.0mm | φ50.8mm | □50.8mm | φ12.7mm | |
仕様
| 光量分割比公差 | ±5% |
| 使用可能最小ビーム径 | 2mm |
| 動作波長範囲 | 250 to 2000nm（UV〜IR仕様） 400 to 2000nm（VIS〜IR仕様） |
| コーティングパターン | 正方形 |
| 基板材質 | UVグレード合成石英（UV〜IR仕様） B270（VIS〜IR仕様） |
| 基板厚み | 約1.5mm |
| 外形公差 | + 0.0mm, - 0.5mm |
| 設計入射角度 | 45° |
