Line along which there is some degree of rotational symmetry in an optical system
For the optic axis of a crystal, see Optic axis of a crystal.
Optical axis (coincides with red ray) and rays symmetrical to optical axis (pair of blue and pair of green rays) propagating through different lenses.
An optical axis is an imaginary line that passes through the geometrical center of an optical system such as a camera lens, microscope or telescopic sight.[1] Lens elements often have rotational symmetry about the axis.
The optical axis defines the path along which light propagates through the system, up to first approximation. For a system composed of simple lenses and mirrors, the axis passes through the center of curvature of each surface, and coincides with the axis of rotational symmetry. The optical axis is often coincident with the system's mechanical axis, but not always, as in the case of off-axis optical systems.
For an optical fiber, the optical axis is along the center of the fiber core, and is also known as the fiber axis.
^"Optical axis | Light Rays, Refraction & Reflection | Britannica". www.britannica.com. Archived from the original on September 26, 2023. Retrieved 2024-01-23.
An opticalaxis is an imaginary line that passes through the geometrical center of an optical system such as a camera lens, microscope or telescopic sight...
Opticalaxis gratings (OAGs) are gratings of opticalaxis of a birefringent material. In OAGs, the birefringence of the material is constant, while the...
light propagates in such materials (along a direction different from the opticalaxis), it splits into two different rays, known as ordinary and extraordinary...
the rotation of the orientation of the plane of polarization about the opticalaxis of linearly polarized light as it travels through certain materials....
electronic image stabilization can also compensate for rotation about the opticalaxis (roll). It is mainly used in high-end image-stabilized binoculars, still...
Axis (genus), a genus of deer Axis, an anatomical term of orientation Axis, a botanical term meaning the line through the centre of a plant Optical axis...
any optical system, rays proceeding from an axis point O under an angle u1 will unite in the axis point O'1; and those under an angle u2 in the axis point...
mirror to redirect the light through the lenses with a 90° angle to the opticalaxis, as in a periscope. The Kenworthy/Netman Snorkel Camera System, introduced...
principal axes One of the two principal axes of a hyperbola Opticalaxis The highest-order symmetry axis of a molecule, based on its molecular symmetry This disambiguation...
object distance, i is the image distance, h is the distance from the opticalaxis at which the outermost ray enters the lens, R 1 {\displaystyle R_{1}}...
vertex (where the opticalaxis meets the mirror) will form an angle with the opticalaxis. The reflected ray has the same angle to the axis, but on the opposite...
optical system (such as a lens). A paraxial ray is a ray that makes a small angle (θ) to the opticalaxis of the system, and lies close to the axis throughout...
(directions normal to the wavefronts) are at small angles θ relative to the opticalaxis of the system, such that the approximation sin θ ≈ θ {\displaystyle...
down along the bore axis. The distance between the bore axis and the sight axis (the opticalaxis of a sighting device), also known as the sight height...
stop), that will be about parallel to the opticalaxis on the other side of the lens, to pass the optical system for any object point in the field of...
to all the optical elements in an instrument being on their designed opticalaxis. It also refers to the process of adjusting an optical instrument so...
In optics, a thin lens is a lens with a thickness (distance along the opticalaxis between the two surfaces of the lens) that is negligible compared to...
focused optical systems). The impulse response function uniquely defines the input-output behavior of the optical system. By convention, the opticalaxis of...
system. In a symmetrical Cassegrain both mirrors are aligned about the opticalaxis, and the primary mirror usually contains a hole in the center, thus permitting...
by forcing all frequencies to propagate at a 90° with respect to the opticalaxis of the crystal. These methods are called temperature tuning and quasi-phase-matching...
the opticalaxis. Spherical lenses are adequate correction when a person has no astigmatism. To correct for astigmatism, the "cylinder" and "axis" components...
Yolo telescopes and optical monochromators. In these devices, the source and detectors of the light are not located on the opticalaxis of the mirror, so...
A telescopic sight, commonly called a scope informally, is an optical sighting device based on a refracting telescope. It is equipped with some form of...
named for Joseph Petzval, describes the optical aberration in which a flat object normal to the opticalaxis (or a non-flat object past the hyperfocal...
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