3MMLED-BLUE-CLR
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69858419-3MMLED-BLUE-CLR
LED Super Bright Blue Water Clear 3mm (T-1) 465nm 5000mcd
the angle at which a display can be viewed with acceptable visual performance.
In photometry, luminous intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle, based on the luminosity function, a standardized model of the sensitivity of the human eye.
Lenses are classified by the curvature of the two optical surfaces. A lens is biconvex (or double convex, or just convex) if both surfaces are convex. If both surfaces have the same radius of curvature, the lens is equiconvex. A lens with two concave surfaces is biconcave (or just concave).