Stress-resistant component for use with quantum dots
View Patent ↗A glass tube including quantum dots in a polymerized matrix is described. An optical component and other products including such glass tube, a composition including quantum dots, and methods are also disclosed.
1. A glass tube for use with quantum dot formulations comprising
the glass tube defined by a light transmissive wall, the glass tube having a length dimension and a cross-section perpendicular to the length dimension, the cross-section including a first full semicircle end and an opposite second full semicircle end and a pair of substantially parallel walls connecting the first full semicircle end and the second full semicircle end with the substantially parallel walls defining a uniform path length, wherein the glass tube has an internal cross-sectional area to glass cross-sectional area ratio less than 0.7, wherein the full semicircle ends have an average thickness along the length of the tube which is smaller than the average thickness of the straight substantially parallel walls along the length of the tube.
2. An optical component comprising
a glass tube defined by a light transmissive wall, the glass tube having a length dimension and a cross-section perpendicular to the length dimension, the cross-section including a first full semicircle end and an opposite second full semicircle end and a pair of straight substantially parallel walls connecting the first full semicircle end and the second full semicircle end with the substantially parallel walls defining a uniform path length, wherein the glass tube has an internal cross-sectional area to glass cross-sectional area ratio less than 0.7, wherein the full semicircle ends have an average thickness along the length of the tube which is smaller than the average thickness of the straight substantially parallel walls along the length of the tube; and
a matrix including quantum dots contained within the glass tube.
3. A combination comprising
a glass tube defined by a light transmissive wall, the glass tube having a length dimension and a cross-section perpendicular to the length dimension, the cross-section including a first full semicircle end and an opposite second full semicircle end and a pair of substantially parallel walls connecting the first full semicircle end and the second full semicircle end with the substantially parallel walls defining a uniform path length, wherein the glass tube has an internal cross-sectional area to glass cross-sectional area ratio less than 0.7, wherein the full semicircle ends have an average thickness along the length of the tube which is smaller than the average thickness of the straight substantially parallel walls along the length of the tube;
a matrix including quantum dots contained within the glass tube;
one or more light sources adjacent to the glass tube; and
a light guide adjacent to the glass tube.
4. A back light display unit comprising
one or more light sources;
a glass tube adjacent the one or more light sources with the glass tube defined by a light transmissive wall, the glass tube having a length dimension and a cross-section perpendicular to the length dimension, the cross-section including a first full semicircle end and an opposite second full semicircle end and a pair of substantially parallel walls connecting the first full semicircle end and the second full semicircle end with the substantially parallel walls defining a uniform path length, wherein the glass tube has an internal cross-sectional area to glass cross-sectional area ratio less than 0.7, wherein the full semicircle ends have an average thickness along the length of the tube which is smaller than the average thickness of the straight substantially parallel walls along the length of the tube;
a matrix including quantum dots contained within the glass tube; and
a light guide interconnecting a substantially parallel wall of the glass tube and a display unit.
5. An optical component in accordance with claim 2 wherein the glass tube containing the matrix is hermetically sealed with a glass seal.
6. An optical component in accordance with claim 2 wherein the glass tube has a racetrack shaped cross-sectional configuration wherein the glass tube is stress-tolerant to stresses on the tube due to polymerization and curing of a polymerizable quantum dot formulation within the tube.