1. A device unitarily molded into a sharps container adapted to remove a scalpel blade from a scalpel handle, each blade having a rear edge which abuts a rear surface of a neck of the handle in a locking relationship, the handle further having a narrow inserted portion provided at a front end thereof and grooves provided along the periphery of the inserted portion, the blade also having a slot for receiving the grooves of the inserted portion of the handle, the grooves being slidable in the slot and passing through a wider opening at a portion of the slot to permit the blade to be removed from the inserted portion, the device comprising:
(a) a generally rectangular, vertical and broad opening defined at a bottom edge by a lowest and widest edge of an upward ramp and at left and right edges by edges of, respectively, left and right sidewalls, where the top edge of the broad opening is open;
(b) the upward ramp extending upward and narrowing backward of the sidewalls from the lowest and widest edge to an uppermost and narrowest edge;
(c) a generally horizontal top ramp extending further back from the uppermost and narrowest edge of the upward ramp, the top ramp having a left to right width about that of the uppermost and narrowest edge of the upward ramp;
(d) a right wall extending up and bounding a right side of the upward ramp;
(e) a left wall bounding a lower part of the left side of the upward ramp;
(f) a flexible wall fixed at one end near a backside of the left sidewall and extending freely therefrom to a notched end, where a right side of the notched end bounds at least part of an upper left part of the upward ramp; and
(g) the device is adapted so that:
(i) a tip of a bladed scalpel may be inserted past the broad opening to force a bottom edge of the blade to slide up the upward ramp and come to rest on the top ramp; and
(ii) the right side of the notched end springs against the rear surface of the neck of the blade behind the rear edge of the blade, whereafter the handle is withdrawn and the rear edge of the blade is engaged in the notched end.
2. The device of claim 1 wherein the left wall has a substantially lower vertical height than the right wall.
3. The device of claim 2 wherein the flexible wall and the left wall in combination are adapted to prevent slippage to the left of a scalpel inserted into the device.
4. The device of claim 3 wherein the right wall is adapted to prevent slippage to the right of a scalpel inserted into the device.
5. The device of claim 1 wherein the top ramp has a generally rectangular, vertical and narrow opening defined at a bottom edge by a transition of the upward ramp to the top ramp and at left and right edges by edges of, respectively, left and right top towers, where the top edge of the narrow opening is open.
6. The device of claim 5 wherein the left wall has a substantially lower vertical height than the right wall.
7. The device of claim 1 wherein the flexible wall has a greatest vertical height at its attachment and narrows to a smallest vertical height at the notched end.
8. A device adapted to remove a scalpel blade from a scalpel handle, each blade having a rear edge which abuts a rear surface of a neck of the handle in a locking relationship, the device comprising:
(a) a broad opening defined at a bottom edge by a lowest and widest edge of an upward ramp and at left and right edges by edges of, respectively, left and right sidewalls, where the top edge of the broad opening is open;
(b) the upward ramp extending upward and narrowing backward of the sidewalls from the lowest and widest edge to an uppermost and narrowest edge;
(c) a right wall extending up and bounding a right side of the upward ramp;
(d) a left wall bounding a lower part of the left side of the upward ramp;
(e) a flexible wall fixed at one end and extending freely therefrom to a notched end, where a right side of the notched end bounds at least part of an upper left part of the upward ramp; and
(f) the device is adapted so that:
(i) a tip of a bladed scalpel may be inserted past the broad opening to force a bottom edge of the blade to slide up the upward ramp; and
(ii) the right side of the notched end springs against the rear surface of the neck of the blade behind the rear edge of the blade, whereafter the handle is withdrawn and the rear edge of the blade is engaged in the notched end.
9. The device of claim 8 wherein a generally horizontal top ramp extends further back from the uppermost and narrowest edge of the upward ramp, the top ramp having a left to right width about that of the uppermost and narrowest edge of the upward ramp.
10. The device of claim 8 wherein the left wall has a substantially lower vertical height than the right wall.
11. The device of claim 8 wherein the flexible wall is fixed at one end near a backside of the left sidewall and extends freely therefrom to the notched end.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A backlight unit, comprising:
a light source;
a light guide plate for introducing light emitted from the light source from an incidence surface provided on an end and emitting the light from an emission surface of the light guide plate;
a diffusive reflector disposed to face a second surface of the light guide plate opposite to the emission surface of the light guide plate; and
an air space disposed between the light guide plate and the diffusive reflector, wherein the diffusive reflector is provided such that a minute concave-convex portion having a light reflection property is formed on a surface of a base thereof and that the surface having the minute concave-convex portion faces the second surface opposite to the emission surface of the light guide plate,
wherein the depths of the concave portions are randomly formed in the range of 0.1 \u03bcm to 3 \u03bcm and the pitches between the adjacent concave portions are randomly set in the range of 5 \u03bcm and 100 \u03bcm, and
wherein tilt angles inside the concave portions are set in the range of \u221218\xb0 to +18\xb0.
2. The backlight unit according to claim 1,
wherein a light directivity control sheet, in which a plurality of pyramid-shaped objects is formed on a base, is provided on the first surface of the light guide plate such that apexes of the pyramid-shaped objects face an opposite side to the light guide plate, and
wherein the light directivity control sheet controls directivity of transmissive light components of at least two other directions of the light components that are emitted from the first surface of the light guide plate and pass through the light directivity control sheet.
3. The backlight unit according to claim 2,
wherein a light diffusive sheet is provided on a surface of the light directivity control sheet where a plurality of pyramid-shaped objects is formed.
4. The backlight unit according to claim 2,
wherein a minute concave-convex portion having light diffusion property is formed on a surface of the light directivity control sheet opposite to the light guide plate.
5. The backlight unit according to claim 1,
wherein a thickness of a side far from the light source in the light guide plate is smaller than a thickness of a side close to the light source.
6. The backlight unit according to claim 1,
wherein the light source comprises an intermediate light guide object provided along the end of the light guide plate and a point light source provided along a longitudinal end of the intermediate light guide object.
7. A liquid crystal display device comprising the backlight unit according to claim 1 and a liquid crystal display unit illuminated by the backlight unit from a rear side.
8. A backlight unit, comprising:
a light source;
a light guide plate emitting light from the light source from an emission surface of the light guide plate;
a diffusive reflector disposed to face a second surface of the light guide plate opposite to the emission surface, the diffusive reflector comprising a plurality of light diffusing concave convex portions, the depths of the concave portions are randomly formed in the range of 0.1 \u03bcm to 3 \u03bcm and the pitches between the adjacent concave portions are randomly set in the range of 5 \u03bcm and 100 \u03bcm, and tilt angles inside the concave portions are set in the range of \u221218\xb0 to +18\xb0; and
an air space layer disposed between the light guide plate and the diffusive reflector.
9. The backlight unit according to claim 8, further comprising an air space or adhesion layer disposed between the light guide plate and the diffusive reflector.
10. The backlight unit of claim 8, further comprising a light directivity control sheet comprising a plurality of pyramid-shaped objects disposed on a base thereof, the plurality of pyramid-shaped objects facing away from the light guide plate; and
wherein the light directivity control sheet controls directivity of transmissive light components of at least two other directions of the light components that are emitted from the emission surface of the light guide plate and that pass through the light directivity control sheet.
11. The backlight unit according to claim 10, wherein the plurality of pyramid-shaped objects comprise discontinuously spaced apex portions directed away from the light guide plate.
12. The backlight unit according to claim 10, wherein the pyramid shaped objects are shaped in the form of a member selected from the group consisting of quadrangular pyramid, hexangular pyramid, octangular pyramid, cone and elliptic cone.
13. The backlight unit according to claim 10, further comprising a light diffusive sheet disposed over the light directivity control sheet.
14. The backlight unit according to claim 13, wherein the light diffusive sheet comprises concave-convex portions diffusing light emitted from the emission surface of the light guide plate.
15. The backlight unit according to claim 10, wherein the light diffusing concave-convex portions are disposed on a surface of the light directivity control sheet facing the light guide plate.
16. The backlight unit according to claim 8, further comprising a first prism sheet and a second prism sheet disposed over the emission surface of the light guide plate, wherein a cross section of each prism sheet comprises triangular shaped protrusions separated by wedge shaped grooves.
17. The backlight unit according to claim 16, wherein the first prism sheet and the second prism sheet are arranged so that edge lines corresponding to the triangular shaped protrusions in a first prism sheet are perpendicular to edge lines corresponding to the triangular shaped protrusions in a second prism sheet.
18. The backlight unit according to claim 8,
wherein a thickness of the light guide plate decreases with increasing distance from the light source.
19. The backlight unit according to claim 8,
wherein the light source comprises an intermediate light guide object provided along the end of the light guide plate and a point light source provided along a longitudinal end of the intermediate light guide object.
20. A liquid crystal display device comprising the backlight unit according to claim 8, wherein the liquid crystal display unit is illuminated by the backlight unit from a rear side.