IR Sensor Range

Hello Group!

Simple question: I need a small IR sensor almost like the QRD1114 with a sensitivity range of 3-5mm or 5-7mm. Is there such a thing? Or how can I increase the range of the QRD1114 or similar sensor? Size is a factor here as is the range. Thanks!

Digikey has about 150 sensor that match your criteria. Have you tried a search there or at any of the other vendors?