Reflectors and lenses and diffuser type?

Other Types of Lights LED Light Bulbs
1

I’m about to order my first Sunlike lamp, say a SunLike9. I see it offers reflectors and lenses and diffuser type. Can you help me understand what do these things do and why should I order them?

ordinary
glue round

43mm lens 60° +$5.0043mm lens 60°
43mm lens 30° +$5.0043mm lens 30°
Reflector 36mm 90° +$2.00Reflector 36mm 90°
Reflector 50mm 120° +$3.00Reflector 50mm 120°

2

Hello. Usually optics without diffuser use for plants. With reflector and diffuser it will be good bulb for table lamp. But reflector or lens with reflector can be only with COB LED, not with pcb with smd leds because of size

I based new mass model on 9w body. It is RIRERA9, it is with round diffuser, and I have about 15pcs in stock

But I did not added it in my site, you can find this model only in telegram. Because creating of the rirera.com still in progress…