US 2025/0098595 A1 · LASER PROJECTION APPARATUS

Abstract

A laser projection apparatus includes a laser source assembly, an optical modulator, a display control circuit, and a signal shaping circuit. The laser source assembly is configured to be turned on or turned off under driving of a target driving signal. The display control circuit is configured to: output an image display driving signal to the optical modulator, and synchronously output an initial driving signal to the laser source assembly. The initial driving signal includes an initial enable signal and an initial brightness adjustment signal. The signal shaping circuit is disposed in a path for transmitting at least one of the initial enable signal or the initial brightness adjustment signal to the laser source assembly. The signal shaping circuit is configured to output a shaping signal. The shaping signal is superimposed on the initial enable signal or the initial brightness adjustment signal to form the target driving signal.

Claims20

Dependent claims

A laser projection apparatus comprising:

a laser source assembly configured to be turned on or turned off under driving of a target driving signal;
an optical modulator;
a display control circuit configured to:
output an image display driving signal to the optical modulator, and synchronously output an initial driving signal to the laser source assembly;
wherein the initial driving signal includes an initial enable signal and an initial brightness adjustment signal;
and
a signal shaping circuit disposed in a path for transmitting at least one of the initial enable signal or the initial brightness adjustment signal to the laser source assembly;
the signal shaping circuit being configured to output a shaping signal;
wherein the shaping signal is superimposed on the at least one of the initial enable signal or the initial brightness adjustment signal, so as to form the target driving signal.

6 more elements

A laser projection apparatus comprising:

a laser source assembly including a laser;
the laser source assembly being configured to provide illumination beams;
an optical modulator configured to modulate the illumination beams according to an image display driving signal;
an SoC configured to receive and decode external audio and video signals, and transmit the video image signals obtained after decoding to the display control circuit;
the display control circuit configured to synchronously output an initial driving signal for driving the laser and the image display driving signal for driving the optical modulator;
and
a signal shaping circuit configured to output a shaping signal;
wherein the shaping signal is superimposed on the initial driving signal to form a target driving signal;
the target driving signal is a high-frequency periodic driving signal;
the laser is configured to receive the target driving signal to be turned on or turned off.

7 more elements

Dependencies are inferred from the claim text.

Laser projection apparatus

Life of this patent

Laser projection apparatus

Life of this patent

Abstract

Claims20