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US 10,473,520 B2Granted
Light source device for calibrating image sensor
AssigneeSamsung Electronics Co., Ltd.
InventorsSung-Young Kwak, Yong-Gu Lee
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Abstract
A light source device for calibrating an image sensor is provided. The light source device includes a light source unit for outputting light, a transform filter unit for controlling a color temperature according to a wavelength of the light received from the light source unit, and a plurality of diffusion plates for controlling a ratio of long-wavelength light to short-wavelength light, the long-wavelength light and the short-wavelength light being output from the light source unit.
Claims17
A light source device comprising:
- a light source unit configured to output light comprising long-wavelength light and short-wavelength light;
- a transform filter unit configured to transform the light to a transformed light by controlling a color temperature of the light according to a wavelength of the light and to output the transformed light comprising transformed long-wavelength light and transformed short-wavelength light;
- diffusion plates in a diffusion plate block configured to control a ratio of the transformed long-wavelength light to the transformed short-wavelength light;
- a concave lens unit, between the transform filter unit and the diffusion plate block, configured to distribute the transformed light through the transform filter unit;
- and
- a light source body for mounting the light source unit and the transform filter unit therein,
- wherein the diffusion plates are configured to receive the light which is emitted, from the light source unit and passed through the transform filter unit,
- wherein the diffusion plate block includes a first diffusion plate and a second diffusion plate for receiving the transformed light from the first diffusion plate, and
- wherein an amount of the transformed light output by the second diffusion plate and a ratio of the transformed short-wavelength light to the transformed long-wavelength light is controlled by adjusting a distance between the first diffusion plate and the second diffusion plate.
6 more elements
A method comprising:
- outputting light by a light source unit mounted in a light source body, wherein the light comprises long-wavelength light and short-wavelength light;
- transforming the light to a transformed light by controlling a color temperature of the light according to a wavelength of the light, wherein the transformed light comprises transformed long-wavelength light and transformed short-wavelength light, by a transform filter unit mounted in the light source body;
- and
- controlling a ratio of the transformed long-wavelength light to the transformed short-wavelength light by a diffusion block comprising diffusion plates,
- wherein the diffusion plates are configured to receive the light which is emitted from the light source unit and passed through the transform filter unit and passed through a concave lens,
- wherein a diffusion plate block includes a first diffusion plate and a second diffusion plate for receiving the transformed light from the first diffusion plate, and
- wherein an amount of the transformed light output by the second diffusion plate and a ratio of the transformed short-wavelength light to the transformed long-wavelength light is controlled by adjusting a distance between the first diffusion plate and the second diffusion plate.
4 more elements
Dependencies are inferred from the claim text.