Light Pollution Suppression (LPS) Filters



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Placing Orders



Above is a sample of the filter lot data plot which is shipped with each filter.

The IDAS (formerly Tokai) production criteria for filters are as follows, arranged from left to right (short to long wavelength) as plotted above:

Wavelength (nm)

  Pass/Block   Transmission

365

  Block   6.5% max

405

  Block   6.5% max

  Pass   60% min (avg)

436

  Block   6.5% max

  Pass   92% min (avg)

546

  Block   6.5% max

  Pass   75% min (avg)

590

  Block   6.5% max

  Pass   75% min (avg)

623

  Block   25% max

  Pass   80% min (avg)

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