Abstract: A lens, a light source module and a lighting device are provided. The lens includes a lens body and at least two positioning columns. An inner end of the positioning column is connected with the lens body, and an outer end is a free end. A direction from the outer end to the inner end of the positioning column is a first direction. The positioning column includes at least three positioning segments which are sequentially distributed in the first direction. A plane perpendicular to an axis of the positioning segment is a projection plane, and a projection of the positioning segment on the projection plane is a first projection, an area enclosed by an outer contour line of the first projection is a first area, and the first areas of at least three positioning segments are sequentially increased in the first direction.

Abstract: A spotlight lamp includes a housing, a light emitting module, a lens, and an anti-glare ring. The housing has an opening. The light emitting module and the lens are both arranged inside the housing. The anti-glare ring is connected to the housing by a detachable snap-fit structure, and blocks an edge of the opening. The lens abuts between the light emitting module and the anti-glare ring. The disassembly and assembly process of the spotlight lamp provided by the embodiments of the present disclosure is very simple so that it is convenient for users to replace the lens to adjust the light emitting range.

Abstract: A lens, a light source module and a lighting device are provided. The lens includes a lens body and at least two positioning columns. An inner end of the positioning column is connected with the lens body, and an outer end is a free end. A direction from the outer end to the inner end of the positioning column is a first direction. The positioning column includes at least three positioning segments which are sequentially distributed in the first direction. A plane perpendicular to an axis of the positioning segment is a projection plane, and a projection of the positioning segment on the projection plane is a first projection, an area enclosed by an outer contour line of the first projection is a first area, and the first areas of at least three positioning segments are sequentially increased in the first direction.

Abstract: An installation bottom base is provided. The installation bottom base includes: a main body, a fixed installation structure connected with the main body, a light source installation structure and a bottom base terminal assembly, and the bottom base terminal assembly includes at least two bottom base terminals exposed to the light source installation structure. When the light source module is installed to the bottom base, the at least two base terminals are electrically connected with the plurality of light emitting units in the light source module, so that at least two of the light emitting units in the light source module are in different power supply circuits. In summary, current supplied to the light emitting units by a power module is transmitted by the at least two terminals, so that the at least two light emitting units are in different power supply circuits.

Abstract: A spotlight lamp includes a housing, a light emitting module, a lens, and an anti-glare ring. The housing has an opening. The light emitting module and the lens are both arranged inside the housing. The anti-glare ring is connected to the housing by a detachable snap-fit structure, and blocks an edge of the opening. The lens abuts between the light emitting module and the anti-glare ring. The disassembly and assembly process of the spotlight lamp provided by the embodiments of the present disclosure is very simple so that it is convenient for users to replace the lens to adjust the light emitting range.

Abstract: An installation bottom base is provided. The installation bottom base includes: a main body, a fixed installation structure connected with the main body, a light source installation structure and a bottom base terminal assembly, and the bottom base terminal assembly includes at least two bottom base terminals exposed to the light source installation structure. When the light source module is installed to the bottom base, the at least two base terminals are electrically connected with the plurality of light emitting units in the light source module, so that at least two of the light emitting units in the light source module are in different power supply circuits. In summary, current supplied to the light emitting units by a power module is transmitted by the at least two terminals, so that the at least two light emitting units are in different power supply circuits.