Chapter 5
Fig. 5-1 Right eye of author
Fig. 5-2 The Electromagnetic Spectrum (Originally taken and modified from en.wikipedia en:Image:ElectromagneticSpectrum.svg and en:Image:Electromagnetic-Spectrum.png)
Fig. 5-3 One wavelength
Fig. 5-4 Breakdown of the Ultraviolet portion of the spectrum (Courtesy of Jeff Robinson, scamper@me.com)
Fig. 5-5 Visible portion of the electromagnetic spectrum (Courtesy of Jeff Robinson, scamper@me.com)
Fig. 5-6 Sony DCR-TRV27 video camera with Night Shot
Fig. 5-7 Close-up of Sony DCR-TRV27 Night Shot
Fig. 5-8 FujiFilm FinePix S3 Pro UV/IR Single Lens Reflects (SLR) camera
Fig. 5-9 Using a stock Nikon D90, the IR energy from a TV remote can be easily seen
Fig. 5-10 Top, lens focused at 7 feet (green number on white line) in visible light; bottom, lens re-focused at 7 feet (green number on red 28mm line) for infrared energy
Fig. 5-11 Spectral range of film and digital sensors
Fig. 5-12 Illustration of how a sensor matrix is similar to a checker board with each square being one pixel
Fig. 5.13 Top, photographing only UV energy sources, blocking Visible and IR; Middle, photographing only Visible energy sources, blocking UV and IR; Bottom, photographing only IR energy sources, blocking UV and Visible
Fig. 5-14 Top, ordinary eye glasses; UV safety glasses & 18A filter in the UV portion of the spectrum; Middle, ordinary eye glasses; UV safety glasses & 18A filter in the VIS portion of the spectrum; Bottom, ordinary eye glasses; UV safety glasses & 18A filter in the IR portion of the spectrum
Fig. 5-15 Sample of various filters spectral response
Fig. 5-16 Graphs illustrating how filters limit and control energy
Fig. 5-17 Seven of the most used commonly used IR cut-on filters; Kodak number designation 70, 88A, 89B, 87, 87C, 87B, 87A
Fig. 5-18 Top, unaltered digital camera image, 400nm to 700nm; Middle, image with no blocking filter, 350nm to 1100nm; Bottom, image with only IR pass filter (87), 800nm & above
Fig. 5-19 Top, obliterated mailing label in the Visible portion of the spectrum; Bottom, obliterated mailing label in the IR portion of the spectrum
Fig. 5-20 Top, glass filters imaged in the IR (87 filter) portion of the spectrum, 800nm & up; Middle, glass filters imaged in the Visible with a UV/IR filter blocking that portion of the spectrum, 400nm to 700nm; Bottom, glass filters imaged in the UV (Baader BPU2 U-filter) portion of the spectrum, 320nm to 390nm
Fig. 5-21 Illustration of the spectral range of the above six glass filters, light sources and sensor
Fig. 5-22 Top, check in the Visible portion of the spectrum; Bottom, check in the IR portion of the spectrum
Fig. 5-23 Illustration of Ultraviolet Reflectance photography
Fig. 5-24 Illustration of Visible Reflectance photography
Fig. 5-25 Illustration of IR Reflectance photography
Fig. 5-26 Top, visible image of shoe print on a paper towel ; Bottom, UV reflective image of the same paper towel
Fig. 5-27 Illustration of the spectral range of the light source, filter and sensor for UV Luminescence
Fig. 5-28 Illustration of the spectral range of the light source, filter and sensor for Visible (IR)Luminescence
Fig. 5-29 Six images of the same piece of cloth with various lights and filters
Fig. 5-30 Top, altered deposit slip in the visible portion of the spectrum; Bottom, the same slip using IR (Visible) Luminescence
Fig 5-31 Top, receipt in visible light; Bottom, same receipt imaged using IR (Visible) Luminescence
Fig 5-32 Eight writing inks and one pencil as seen using reflectance and luminescence in the LWUV, VIS, and NIR
Fig 5-33 The various dyes in twenty six pieces of cloth as seen using reflectance and luminescence in the LWUV, VIS, and NIR
