US 2021/0341618 A1 · IN-VEHICLE IMAGING APPARATUS

Abstract

An illumination apparatus irradiates an object with a reference light having a random pattern to be switched for each illumination period TILM. A photodetector detects reflected light from the object. A processing device reconstructs a reconstructed image of the object based on the detection intensity based on the output of the photodetector and the light intensity distribution of the reference light. An interval period TINT in which the light intensity of the reference light is zero or the reference light has a uniform light intensity distribution is inserted between an irradiation period TILM and the next irradiation period TILM. With the upper limit of the sensing distance in the depth direction of the in-vehicle imaging apparatus as LMAX, and with the speed of light as c, the interval period TINT is designed to be equal to or larger than 2×LMAX/c.

Claims9

Dependent claims

An in-vehicle imaging apparatus comprising:

an illumination apparatus structured to irradiate reference light having a random pattern to be switched for each illumination period;
a photodetector structured to detect reflected light from an object;
and
a processing device structured to reconstruct a reconstructed image of the object based on a detection intensity based on an output of the photodetector and a light intensity distribution of the reference light,
wherein an interval period in which the light intensity of the reference light is set to zero or the reference light has a uniform light intensity distribution is inserted between irradiation periods,
and wherein, with an upper limit of a sensing distance in a depth direction of the in-vehicle imaging apparatus as LMAX, and with the speed of light as c, the interval period is designed to be equal to or larger than 2×LMAX/c.

3 more elements

Dependencies are inferred from the claim text.

In-vehicle imaging apparatus

Life of this patent

In-vehicle imaging apparatus

Life of this patent

Abstract

Claims9