Optic for backlight control

An optical device for a light fixture, the optical device comprising:

• an optic portion comprising:
• an optic body having a front end, a rear end, and a curved bottom surface disposed between the front end and the rear end;
• a cavity disposed within the optic body, wherein the cavity is open at a top side of the optic body, and wherein the cavity is configured to receive light emitted by a light source of the light fixture;
• a total internal reflector (TIR) having:
• a top portion and a bottom portion, wherein the top portion of the TIR is disposed within the cavity of the optic body and comprises a back surface,
• wherein the bottom portion of the TIR extends beyond the curved bottom surface of the optic body, wherein the bottom portion of the TIR comprises a first exterior TIR feature and a second exterior TIR feature,
• wherein the second exterior TIR feature is configured to redirect a first portion of a first subset of the light into a target volume of space in a first light distribution pattern and away from an avoided volume of space,
• wherein the second exterior TIR feature is further configured to redirect a second portion of the first subset of the light toward the first exterior TIR feature, wherein the first exterior TIR feature is configured to receive the second portion of the first subset of the light from the second exterior TIR feature and redirect the second portion of the first subset of the light into the target volume of space in a second light distribution pattern and away from the avoided volume of space,
• wherein the first exterior TIR feature is further configured to redirect a second subset of the light into the target volume of space in a third light distribution pattern and away from the avoided volume of space,
• wherein the back surface of the TIR is configured to redirect a third subset of the light toward the target volume of space in a fourth light distribution pattern and away from the avoided volume of space, and
• wherein the optic portion further comprises a diffusing feature disposed on the curved bottom surface of the optic body adjacent to the first exterior TIR feature, wherein the diffusing feature is configured to redirect a fourth subset of the light into a fifth light distribution pattern.