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Signpost of
light rays and waves

This website provides technical information (signposts) on ray optics (light rays) and wave optics (light waves) that are useful for optical design. The content is still limited, but we plan to gradually increase it.

Table of contents :

Geometric Optics

・Relations for plane-parallel plates derived from Snell's law

・Vector representation of reflection and refraction of light at material interfaces

・Ray propagation in spherical lens systems based on paraxial calculations

・Geometrical ray propagation in ideal lens systems based on lens formula

・Astigmatism caused by oblique incidence on a spherical mirror and its correction

・Mirror shape that focuses parallel light to a single point (paraboloid of revolution)

・Focus movement amount of finite-corrected optical system

・Principles of solid immersion lens (SIL)

Physical Optics

・Derivation of various formulas for electromagnetic waves (in the case of non-absorbing media)

・Derivation of various formulas for electromagnetic waves (in the case of absorbing media)

・Principles of ellipsometry

・Recurrence formula model for Gaussian beam propagation in an ideal lens system

・Derivation of the coherence length of light waves

・A method for determining the absorption coefficient of a material from transmittance measurements

・Light loss when passing a Gaussian beam through a circular aperture

Appendix:

・Definition of direction and sign of one-dimensional vector and angle

・Representing complex numbers using amplitude and argument

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