[QUOTE=deanwitty;2658015]It is very possibly a result of manufacturers striving for a quicker start-up/read/recognition of the disc inserted. It also occurs to me that this may be required to lengthen the lifespan of the blue laser diode by avoiding a larger inrush of current when activated.[/QUOTE]
Unfortunately, the opposite is true: when you turn on laser is not leaking more current compared to its normal operation. Ie a small glow of - it’s still a resource reduction diode, rather than an increase.
And any more quickly assess the discs it does not promote!
[QUOTE=Albert;2658016]It’s possible the same situation occurs for the CD/DVD optics in drives; the manufacturers do state that a small amount of radiation occurs even if the laser looks like it’s off. It’s possible that the blue is just more visible than the red laser, but both are equally “on” while idling but powered on.[/QUOTE]
Infrared laser (for reading CD) - yes, this is possible because his range beyond the visible to the human eye, but the usual red laser (for reading DVD) see eye just as blue. Therefore, this assumption is also unlikely to correct.
[QUOTE=ghogan42;2658033]It would still be pretty interesting to see if other drives with the same chipset do the same thing. Or if it is just this drive. Or perhaps a liteon thing.[/QUOTE]
I asked this same question in a forum for repair, where a few people said to me that other BD-drives blue light when operating without disk is missing.