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Operating Wavelengths of ForenScope UV-VIS-NIR-MWIR Imaging Systems

The following ranges represent the narrowband light operating spectrums utilized in ForenScope’s UV-VIS-NIR-MWIR all-in-one systems and its R&D-supported standard devices:

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1. Ultraviolet (UV)

Refers to the 10-400nm wavelength range, classified as VUV, UVC, UVB, and UVA. The operating range of ForenScope imaging devices (such as the 8K and 4K models) begins at 180±20nm and covers all UV wavelengths up to 400nm. Advanced ForenScope sensors, optical lenses, filters, and light sources render even the most challenging forensic evidence visible through this extensive operating range.

1.1 Vacuum UV (VUV: 10-200nm)

Also referred to as Extreme UV (EUV) and Far UV (FUV). VUV encompasses EUV (10-121nm) and FUV (122-200nm). ForenScope 8K and 4K devices utilize UV lenses manufactured from specialized materials capable of transmitting light starting from the 180±20nm range, operating near the Vacuum/Extreme UV boundaries.

1.2 UVC (200-280nm)

Also known as Ultraviolet-C, Deep UV, Short-wave UV, or Far-UVC. While much of the literature defines UVC as 100-280nm, ForenScope 8K and 4K devices operate efficiently in the 180-280±20nm range, supported by specialized UV lenses, customized UV sensors, Band Pass UV filters, and UVC-emitting light sources.

ForenScope 4K and 8K devices are equipped with hardware for emission, filtration, and imaging at 254nm and various other UVC wavelengths.

1.3 UVB (280-315nm)

Also referred to as Ultraviolet-B, Medium-wave UV, or B-Band UV. ForenScope 8K and 4K devices operate with full sensitivity within the 280-315nm wavelength range.

1.4 UVA (315-400nm)

Also known as Ultraviolet-A, Long-wave UV, or Blacklight (Wood’s Lamp). ForenScope 8K and 4K devices operate with full sensitivity between 315-400nm, while devices such as SuperSpectral and t-Zoom operate in the 330-400±20nm range.

2. Visible (VIS)

This represents the 400-700nm wavelength range. The lack of a definitive consensus on these boundaries stems from the differences between camera sensors and the human eye. Camera manufacturers typically limit this range to 400-700nm using filters placed in front of the sensors. However, this optical limitation does not apply to the biological human eye, which can perceive a range of 360-780nm depending on individual factors (e.g., age), light intensity, and dark adaptation.
All ForenScope imaging devices are optimized to perform at full capacity within the 400–700nm range in accordance with industrial sensor standards, ensuring sharp images with minimized chromatic aberration.

3. Infrared (IR)

The IR spectrum begins at 700nm (where the visible red light ends) and extends to the microwave boundary at 1 mm (1,000,000nm). While the limit of visible light is accepted as 700nm in standard cameras due to filter constraints, it is generally considered 750 or 780nm for the human eye.
At ForenScope, we define the starting boundary for our cameras as 700±20nm. Depending on the model, devices such as the ForenScope 8K, SuperSpectral, t-Zoom, and R&D-FP5 are capable of imaging up to 2000nm.