f/#, NA, and spot size
Main Index
;
Physical Sciences
;
Optics
Focal length
m
--- METRIC ---
pm
nm
microns (µm)
mm
cm
km
-- IMPERIAL --
mil
1/16 inch
inches
feet
yards
miles
- SCIENTIFIC -
Planck
Bohrs
Angstrom
light-seconds
light-years
au
parsecs
--- OTHER ---
points
cubits
fathoms
rods
chains
football fields
furlongs
Roman miles
nautical miles
leagues
Aperture diameter
m
--- METRIC ---
pm
nm
microns (µm)
mm
cm
km
-- IMPERIAL --
mil
1/16 inch
inches
feet
yards
miles
- SCIENTIFIC -
Planck
Bohrs
Angstrom
light-seconds
light-years
au
parsecs
--- OTHER ---
points
cubits
fathoms
rods
chains
football fields
furlongs
Roman miles
nautical miles
leagues
Wavelength
m
--- METRIC ---
pm
nm
microns (µm)
mm
cm
km
-- IMPERIAL --
mil
1/16 inch
inches
feet
yards
miles
- SCIENTIFIC -
Planck
Bohrs
Angstrom
light-seconds
light-years
au
parsecs
--- OTHER ---
points
cubits
fathoms
rods
chains
football fields
furlongs
Roman miles
nautical miles
leagues
f#
NA
Airy disk diameter
m
--- METRIC ---
pm
nm
microns (µm)
mm
cm
km
-- IMPERIAL --
mil
1/16 inch
inches
feet
yards
miles
- SCIENTIFIC -
Planck
Bohrs
Angstrom
light-seconds
light-years
au
parsecs
--- OTHER ---
points
cubits
fathoms
rods
chains
football fields
furlongs
Roman miles
nautical miles
leagues
Gaussian waist size
m
--- METRIC ---
pm
nm
microns (µm)
mm
cm
km
-- IMPERIAL --
mil
1/16 inch
inches
feet
yards
miles
- SCIENTIFIC -
Planck
Bohrs
Angstrom
light-seconds
light-years
au
parsecs
--- OTHER ---
points
cubits
fathoms
rods
chains
football fields
furlongs
Roman miles
nautical miles
leagues
Gaussian FWHM
m
--- METRIC ---
pm
nm
microns (µm)
mm
cm
km
-- IMPERIAL --
mil
1/16 inch
inches
feet
yards
miles
- SCIENTIFIC -
Planck
Bohrs
Angstrom
light-seconds
light-years
au
parsecs
--- OTHER ---
points
cubits
fathoms
rods
chains
football fields
furlongs
Roman miles
nautical miles
leagues
Rayleigh length
m
--- METRIC ---
pm
nm
microns (µm)
mm
cm
km
-- IMPERIAL --
mil
1/16 inch
inches
feet
yards
miles
- SCIENTIFIC -
Planck
Bohrs
Angstrom
light-seconds
light-years
au
parsecs
--- OTHER ---
points
cubits
fathoms
rods
chains
football fields
furlongs
Roman miles
nautical miles
leagues