teacher`s notes
... If the light is really intense like a laser pointer, some may get through. Slide 5 and 6 4) How are polarizing filters different from regular filters? This is a good question for whiteboards. Regular filters do not depend on orientation. Two filters will absorb twice as much light as one. They do no ...
... If the light is really intense like a laser pointer, some may get through. Slide 5 and 6 4) How are polarizing filters different from regular filters? This is a good question for whiteboards. Regular filters do not depend on orientation. Two filters will absorb twice as much light as one. They do no ...
Chromatic Dispersion
... light at the wavelength where the indices coincide, but scatter at other wavelengths. The effect is rather dramatic, with the colorless liquid and solid collaborating to create a brilliantly colored composite that has a single spectral hue. Christiansen used glass in a mixture of benzene and carbon ...
... light at the wavelength where the indices coincide, but scatter at other wavelengths. The effect is rather dramatic, with the colorless liquid and solid collaborating to create a brilliantly colored composite that has a single spectral hue. Christiansen used glass in a mixture of benzene and carbon ...
FILTERS AND BEAM SPLITTERS Several of the applications of
... Wavelength-selective filters are used to produce or select specific color or band of color from a white light source, to isolate a specific wavelength, or to reject a specific wavelength or band of wavelengths. We will study three general classes of wavelength-selective filters according to their us ...
... Wavelength-selective filters are used to produce or select specific color or band of color from a white light source, to isolate a specific wavelength, or to reject a specific wavelength or band of wavelengths. We will study three general classes of wavelength-selective filters according to their us ...
Plasmonic waveguide filters with nanodisk resonators
... *Note: From the power spectrum, obtained directly from OptiFDTD, the filter can be demonstrated. The transmission spectrum can also be calculated using the method shown in Ref 1. **Note: The slight difference in the peak wavelengths (compared to reference) is due to the different metal model used. ...
... *Note: From the power spectrum, obtained directly from OptiFDTD, the filter can be demonstrated. The transmission spectrum can also be calculated using the method shown in Ref 1. **Note: The slight difference in the peak wavelengths (compared to reference) is due to the different metal model used. ...
Coherence and Combining Filters
... Wc is the maximum separation of two points across the wavefront at a fixed time such that the two points still have a well-defined phase relationship (and hence are able to produce interference fringes) ...
... Wc is the maximum separation of two points across the wavefront at a fixed time such that the two points still have a well-defined phase relationship (and hence are able to produce interference fringes) ...
PolarView™ ND filter
... filters, each with a specific fixed optical density. Changing the filters can be cumbersome and there is a risk that other camera settings are changed unintentionally. This is especially problematic for videographers in situations where lighting conditions change rapidly. Recently, variable ND filte ...
... filters, each with a specific fixed optical density. Changing the filters can be cumbersome and there is a risk that other camera settings are changed unintentionally. This is especially problematic for videographers in situations where lighting conditions change rapidly. Recently, variable ND filte ...
UV filter
UV filters are individual compounds or mixtures to prevent ultraviolet (UV) light from getting through. UV filters are used in sunscreens to protect skin or in photography to reduce the level of ultraviolet light that strikes the recording medium.Historically, photographic films were mostly sensitive to UV light, which caused haziness or fogginess, and in color films a bluish hue. Therefore, as a standard, a UV (blocking) filter was used, transparent to visible light while filtering out shorter ultraviolet wavelengths. However, newer photographic film and digital cameras are highly insensitive to UV wavelengths. UV filters are sometimes referred to as L37 or L39 filters, depending on the wavelengths of light that they filter out; an L37 filter removes ultraviolet light with a wavelength shorter than 370 nm, whereas an L39 filter eliminates light with a wavelength shorter than 390 nm.UV filters span the color spectrum and are used for a wide variety of applications. Ortho Red and Deep Ortho Red lights are commonly used in diffusion transfer, typesetting films/paper other applications dealing with orthochromatic materials. Yellow Gold, Yellow, Lithostar Yellow and Fuji Yellow filters or safelights provide safe workspaces for contact proofing applications like screen printing and platemaking. Pan Green, Infrared Green and Dark Green filters or safelights are commonly used in scanning applications, work with panchromatic film and papers and x-rays.Many photographers and cinematographers still use UV filters as a protection for their lenses' glass and coating, due to their low cost and lack of effect on the exposure of the shot. However, UV filters (in particular filters lacking optical coating) may introduce lens flare and have an adverse impact on contrast and sharpness, especially when a strong light source is present.However, in photography, the term ""UV filter"" can be also be misused as a filter that passes UV light while blocking other wavelengths in the light spectrum, in the same way the term ""IR filter"" is also sometimes misused. The correct names for such filters though, are ""UV pass filter"" and ""IR pass filter"". This is a very specialized area in photography.