Optical test apparatus and optical test method
AssigneeKabushiki Kaisha Toshiba
InventorsHiroya Kano, Hiroshi Ohno, Hideaki Okano
Life of this patent
Estimating the term…
Abstract
According to one embodiment, an optical test apparatus includes a light convergence element, an optical filter, and an image sensor. The light convergence element converges light from a subject. The optical filter is arranged on an optical axis of the light convergence element. The image sensor is arranged in an effective region not crossing the optical axis of the light convergence element, and receives light passing through the light convergence element and the optical filter.
Claims14
An optical test apparatus comprising:
- a first optical system that has telecentricity on an object side for light having a first wavelength, and that passes the light having the first wavelength;
- a second optical system that passes light having a second wavelength different from the first wavelength;
- and
- an image sensor that is arranged in an effective region not crossing an optical axis of the first optical system and the second optical system, and that receives light passing through both of the first optical system and the second optical system.
An optical test method comprising:
- imaging an object by an optical device including:
- a first optical system that has telecentricity on an object side for light having a first wavelength, and that passes the light having the first wavelength;
- a second optical system that passes light having a second wavelength different from the first wavelength;
- and
- an image sensor that is arranged in an effective region not crossing an optical axis of the first optical system and the second optical system, and that receives light passing through both of the first optical system and the second optical system;
- and
- generating, based on output from the image sensor, image data in which a distance between a first image produced by light having the first wavelength and a second image produced by light having the second wavelength from an identical point on the object changes in accordance with a distance from the point to the image sensor.
A non-transitory computer readable medium including computer executable instructions, wherein the instructions, when executed by a processor, cause the processor to perform operations comprising:
- imaging an object by an optical device including:
- a first optical system that has telecentricity on an object side for light having a first wavelength, and that passes the light having the first wavelength;
- a second optical system that passes light having a second wavelength different from the first wavelength;
- and
- an image sensor that is arranged in an effective region not crossing an optical axis of the first optical system and the second optical system, and that receives light passing through both of the first optical system and the second optical system;
- and
- generating, based on output from the image sensor, image data in which a distance between a first image produced by light having the first wavelength and a second image produced by light having the second wavelength from an identical point on the object changes in accordance with a distance from the point to the image sensor.
Dependencies are inferred from the claim text.