Longpass- LP Series
Often referred to as a “sharp-cut” filter, Longpass Filters are specifically designed to pass a broad spectrum of longer wavelength light while blocking shorter wavelengths.
Overview
Longpass Filters
◆ A LP470 filter passes most visible and near-IR wavelengths of light. Used with monochrome cameras to aid in increasing contrast and resolution by blocking UV and shorter deep blue wavelengths.
◆ To achieve a similar effect while also blocking longer wavelengths including the near infrared, see our BP505 filter transmitting longer wavelengths often leads to decreased contrast in many LED-illuminated imaging applications.
◆ Recommend for use with laser diodes and LED lighting that operate in 810-830nm range LP780 filter material is commonly used for Near-IR wavelengths found in machine vision applications. An alternate-use bandpass filter would be our BP810 filter.
◆ LP830 is suggested for use with infrared LED lighting emitting at 880nm or 850nm when it is also desirable to transmit other longer infrared wavelengths as well.
◆ Otherwise we recommend our BP880 or BP850 filters not only for their longer wavelength blocking, but their overall higher peak transmissions.
| Part No | Description | Useful Range | Cut-on 50% T |
|---|---|---|---|
| ➡LP470 | Light Yellow Longpass Filter | 480-1100nm | 470nm |
| ➡LP500 | Yellow Longpass Filter | 510-1100nm | 495nm |
| ➡LP515 | Yellow-Orange Longpass Filter | 520-1100nm | 515nm |
| ➡LP530 | Orange Longpass Filter | 545-1100nm | 530nm |
| ➡LP550 | Orange Longpass Filter | 560-1100nm | 550nm |
| ➡LP580 | Red-Orange Longpass Filter | 585-1100nm | 580nm |
| ➡LP590 | Red Longpass Filter | 605-1100nm | 590nm |
| ➡LP610 | Red Longpass Filter | 620-1100nm | 610nm |
| ➡LP630 | Red Longpass Filter | 645-1100nm | 630nm |
| ➡LP645 | Dark Red Longpass Filter | 650-1100nm | 645nm |
| ➡LP665 | Dark Red Longpass Filter | 680-1100nm | 665nm |
| ➡LP695 | Near-IR Longpass Filter | 715-1100nm | 695nm |
| ➡LP715 | Near-IR Longpass Filter | 730-1100nm | 715nm |
| ➡LP780 | Near-IR Longpass Filter | 800-1100nm | 780nm |
| ➡LP800 | Near-IR Longpass Filter | 820-1100nm | 800nm |
| ➡LP815 | Near-IR Longpass Filter | 825-1100nm | 815nm |
| ➡LP830 | Near-IR Longpass Filter | 845-1100nm | 830nm |
| ➡LP850 | Near-IR Longpass Filter | 870-1100nm | 850nm |
| ➡LP900 | (Limited) Near-IR Longpass | 910-1100nm | 900nm |
| ➡LP920 | VIS Block Short-Wave Infrared Longpass Filter | 930-2300nm | 920nm |
| ➡LP1000 | Short-Wave Infrared Longpass Filter | 1010-2300nm | 1000nm |
| ➡LP1070 | Short-Wave Infrared Longpass Filter | 1100-2300nm | 1070nm |
| ➡LP1475 | Short-Wave Infrared Longpass Filter | 1490-2300nm | 1475nm |
| ➡LP1475A | Short-Wave Infrared Longpass Filter / Extended VIS Block | 1490-2300nm | 1475nm |
| ➡LP1850 | Short-Wave Infrared Longpass Filter | 1900-12,000nm | 1850nm |
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