Light-absorbing film and preparation method thereof, optical imaging equipment

The invention provides a light-absorbing film and a preparation method thereof, and optical imaging equipment, and relates to the technical field of the optical film. The light-absorbing film comprises an alloy substrate, a bonding layer and an anti-reflection layer; the bonding layer is arranged on the alloy substrate, and an anti-reflection layer is arranged on the bonding layer; the light-absorbing film can reach a light-absorbing effect through the alloy substrate and the anti-reflection layer, thereby further reducing stray light; the applicability in the optical imaging equipment needingthe ultra-low stray light is improved; the binding degree of the alloy substrate and the anti-reflection layer is enhanced through the bonding layer, thereby reducing the shedding risk of the anti-reflection layer. Furthermore, the alloy substrate is good in malleability, hard to crack, good in heat tolerance, and can be used as a protection layer under a certain dark background. 本发明提供了一种吸光膜及其制备方法、光学影像设备，涉及光学薄膜技术领域，该吸光膜包