Laser projector, image acquisition device and electronic apparatus

An image acquisition device, comprising:

• a laser projector;
• and
• an image acquirer configured to acquire a laser pattern projected into a target space through the diffractive optical element, the laser pattern being configured to form a depth image;
• wherein the laser projector comprises:
• a substrate assembly,
• a lens barrel comprising a lens barrel sidewall provided to the substrate assembly, the lens barrel sidewall comprising a first face and a second face opposite to each other, the second face being joined to the substrate assembly;
• and
• a diffractive optical assembly provided to the first face and comprising a diffractive optical element and a top cover, the diffractive optical element and the top cover are fixedly connected, the diffractive optical element being located within the lens barrel, and the top cover being at least partially located outside the lens barrel and clamping the lens barrel together with the diffractive optical element.

An electronic apparatus, comprising:

• a housing;
• and
• an image acquisition device comprising:
• a laser projector;
• and
• an image acquirer configured to acquire a laser pattern projected into a target space through the diffractive optical element, the laser pattern being configured to form a depth image;
• wherein the laser projector comprises:
• a substrate assembly,
• a lens barrel comprising a lens barrel sidewall provided to the substrate assembly, the lens barrel sidewall comprising a first face and a second face opposite to each other, the second face being joined to the substrate assembly;
• and
• a diffractive optical assembly provided to the first face and comprising a diffractive optical element and a top cover, the diffractive optical element and the top cover are fixedly connected, the diffractive optical element being located within the lens barrel, and the top cover being at least partially located outside the lens barrel and clamping the lens barrel together with the diffractive optical element,
• wherein the image acquisition device is provided to the housing and configured to acquire a depth image.