Fixing base, laser projection module, and electronic device

A fixing base, applied to a laser projection module, wherein the fixing base has a first surface and a second surface that are disposed oppositely in a height direction of the fixing base;

• the second surface is a light-emitting surface;
• the fixing base has a first accommodation cavity, a second accommodation cavity, and a third accommodation cavity that are sequentially distributed in a direction from the first surface to the second surface and communicated to each other;
• a projection area of the second accommodation cavity on the second surface is greater than a projection area of the third accommodation cavity on the second surface and is smaller than a projection area of the first accommodation cavity on the second surface;
• a first inner wall of the fixing base is connected to a second inner wall of the fixing base via a first fixing surface;
• the second inner wall is connected to a third inner wall of the fixing base via a second fixing surface;
• the first inner wall is formed by the first accommodation cavity in the fixing base;
• the second inner wall is formed by the second accommodation cavity in the fixing base;
• the third inner wall is formed by the third accommodation cavity in the fixing base;
• and the fixing base is provided with a conduction line.

An electronic device, comprising a laser projection module, wherein the electronic device comprises:

• a fixing base having a first surface and a second surface that are disposed oppositely in a height direction of the fixing base, wherein the second surface is a light-emitting surface, the fixing base has a first accommodation cavity, a second accommodation cavity, and a third accommodation cavity that are sequentially distributed in a direction from the first surface to the second surface and communicated to each other, a projection area of the second accommodation cavity on the second surface is greater than a projection area of the third accommodation cavity on the second surface and is smaller than a projection area of the first accommodation cavity on the second surface, a first inner wall of the fixing base is connected to a second inner wall of the fixing base via a first fixing surface, the second inner wall is connected to a third inner wall of the fixing base via a second fixing surface, the first inner wall is formed by the first accommodation cavity in the fixing base, the second inner wall is formed by the second accommodation cavity in the fixing base, the third inner wall is formed by the third accommodation cavity in the fixing base, and the fixing base is provided with a conduction line;
• a light-emitting chip, disposed on the first fixing surface of the fixing base and electrically connected to one terminal of the conduction line;
• and
• an optical element, disposed on the second fixing surface of the fixing base, wherein after passing through the optical element, laser light emitted by the light-emitting chip is projected out of the fixing base through the third accommodation cavity.