초록 ▼

An external mask-based radiance camera may be based on an external, non-refractive mask located in front of the main camera lens. The mask modulates, but does not refract, light. The camera multiplexes radiance in the frequency domain by optically mixing different spatial and angular frequency compo

An external mask-based radiance camera may be based on an external, non-refractive mask located in front of the main camera lens. The mask modulates, but does not refract, light. The camera multiplexes radiance in the frequency domain by optically mixing different spatial and angular frequency components of light. The mask may, for example, be a mesh of opaque linear elements, which collectively form a grid, an opaque medium with transparent openings, such as circles, or a pinhole mask. Other types of masks may be used. Light may be modulated by the mask and received at the main lens of a camera. The main lens may be focused on a plane between the mask and the main lens. The received light is refracted by the main lens onto a photosensor of the camera. The photosensor may capture the received light to generate a radiance image of the scene.

대표청구항 ▼

What is claimed is: 1. A camera, comprising:a photosensor configured to capture light projected onto the photosensor;a mask configured to modulate but not refract light received from a scene located in front of the camera as the received light passes through the mask;an objective lens positioned bet

What is claimed is: 1. A camera, comprising:a photosensor configured to capture light projected onto the photosensor;a mask configured to modulate but not refract light received from a scene located in front of the camera as the received light passes through the mask;an objective lens positioned between the mask and the photosensor, wherein the objective lens is configured to focus on a plane between the mask and the objective lens, and wherein the objective lens is configured to refract light received from the plane onto the photosensor;wherein the camera multiplexes radiance in the frequency domain by optically mixing different spatial and angular frequency components of the light received from the scene.