The ornamental design for a planaropticalpanel for a light fixture, as shown and described.
FIG. 1 is a bottom isometric view of a planar optical panel for a light fixture.
FIG. 2 is another bottom isometric view of the planar optical panel of FIG. 1.
FIG. 3 is a bottom view of the planar optical panel of FIG. 1.
FIG. 4 is a cross-section view of the planar optical panel of FIG. 1, taken along line 4-4 in FIG. 3; and,
FIG. 5 is another cross-section view of the planar optical panel of FIG. 1, taken along line 5-5 in FIG. 3.
The cross-section views of the optical panel designs illustrate that, while the optical panel has an appearance of a three dimensional design when viewed from below, the optical panel is planar in appearance when viewed from the side.
The dot-dot-dash lines showing a light fixture is for the purpose of illustrating environmental structure and form no part of the claimed design. The dashed lines showing portions of the planar optical panel form no part of the claimed design.