The angle between the optical axis and each the (millions of) chief rays is called (image side) chief ray angle. So if we use CRA, we mean the (image side) chief ray angle , say, the maximum of all chiefray of all pixels. These usually occur in the corners of the sensor.

In the domain of optics and imaging systems, the Lens Chief Ray Angle (CRA) stands as a fundamental concept, profoundly influencing the quality of captured images. To grasp its significance fully, let’s embark on an exploration of the nature and implications of the CRA.

The Lens Chief Ray Angle (CRA) defines the angular relationship between the optical axis and the chief ray of the lens within an imaging system, crucial for optimal performance of the image sensor. Alignment between the lens chief ray angle and the image sensor’s pixel acceptance angle is essential for achieving high-quality images in digital ...

Oct 16, 2023 · What is the lens chief ray angle? The lens chief ray is the ray path from an off-axis point that passes through the center of the aperture stop of the optical system. The lens chief ray angle or CRA is the angle of incidence of the lens chief ray with the image plane.

The principal ray or chief ray (sometimes known as the b ray) in an optical system is the meridional ray that starts at an edge of an object and passes through the center of the aperture stop. [5] [8] [7] The distance between the chief ray (or an extension of it for a virtual image) and the optical axis at an image location defines the size of ...

Jan 13, 2025 · In optical engineering, one crucial element that impacts the success of endoscopy is the chief ray angle. This article takes a closer look at endoscopy and explains why the chief ray angle is...

The Chief Ray Angle is a property of the lens, not the sensor, however what I think the data sheets are referring to is the maximum CRA at which a good reading can be taken. If light rays strike a digital sensor too obliquely, there are issues with intensity and colour shifts.

Jun 11, 2024 · The Lens Chief Ray Angle (CRA) is one of the underlying principles of optics and imaging systems, with this pivotal feature representing a key determinant in the quality of captured images.

The marginal ray and the chief ray are two special meridional rays that together define the properties of the object, images, and pupils. The marginal ray starts at the axial object position, goes through the edge of the entrance pupil, and defines image locations and pupil sizes.

May 15, 2024 · In the domain of optics and imaging systems, the Lens Chief Ray Angle (CRA) stands as a fundamental concept, profoundly influencing the quality of captured images. To grasp its significance fully, let’s embark on an exploration of the nature and implications of the CRA.