Why does the infrared light causes the toy to turn blue when the light from the desk lamp does not?

Infrared light is very different than regular light. You mostly can't see infrared light, at least, not with the naked eye. but sometimes  when laser light pulses rapidly, light-sensing cells in the retina sometimes get a double hit of infrared energy. When that happens, the eye is able to detect light that falls outside the visible spectrum. Infrared is also hotter than a regular lamp light

Sorry if this doesn't help I hope it does UnU

Explanation: