1. A battery cover assembly comprising,
a first plate having a first opening;
a second plate having a second opening corresponding to the first opening, the second plate being combined with the first plate on one side of the first plate; and
a sliding door disposed between the first and second plates for sliding between a closed position where the first and second openings are closed and an open position where the first and second openings are open.
2. The battery cover assembly of claim 1, wherein the first opening is open to the outside at an edge of a side of the first plate.
3. The battery cover assembly of claim 2, wherein the sliding door comprises a projection protruding from a surface exposed to the outside through the first opening.
4. The battery cover assembly of claim 1, wherein the first plate comprises a bulkhead extending along edges of the first plate and protruding toward the second plate, the second plate being combined with the bulkhead to form an inner space, and the sliding door being disposed in the internal space.
5. The battery cover assembly of claim 4, wherein the first plate further comprises a guiding unit protruding toward the second plate in the internal space and meeting the sliding door.
6. The battery cover assembly of claim 5, wherein the sliding door further comprises an elastically deformable combiner protruding toward the guiding unit, the guiding unit further comprising one or more projections protruding toward and selectively engaging the elastically deformable combiner.
7. The battery cover assembly of claim 6, wherein at least two projections of the guiding unit are separated apart from each other, and the elastically deformable combiner includes a combining projection protruding to engage the projections.
8. The battery cover assembly of claim 5, wherein the sliding door comprises a guiding groove combining with the guiding unit and extending along a movement path of the sliding door.
9. The battery cover assembly of claim 8, wherein the sliding door further comprises projections protruding from the guiding groove toward the guiding unit to restrict the movement of the sliding door by contacting the guiding unit.
10. A portable electronic device comprising,
a main body having a battery receptacle;
a terminal connection disposed in the battery receptacle; and
a battery cover assembly rotatably combined with the main body at an edge on one side of the battery receptacle, the battery cover assembly including:
a first plate having a first opening;
a second plate having a second opening corresponding to the first opening, the second plate being combined with the first plate on one side of the first plate; and
a sliding door disposed between the first and second plates for sliding between a closed position where the first and second openings are closed and an open position where the first and second openings are open.
11. The portable electronic device of claim 10, wherein the first plate comprises a bulkhead extending along edges of the first plate and protruding toward the second plate, the second plate being combined with the bulkhead to form an inner space, and the sliding door is disposed in the internal space.
12. The portable electronic device of claim 11, wherein the first plate further comprises a guiding unit protruding toward the second plate to meet the sliding door in the internal space.
13. The portable electronic device of claim 12, wherein the sliding door further comprises an elastically deformable combiner protruding toward the guiding unit, the guiding unit further comprising one or more projections protruding toward and applying a force to the elastically deformable combiner.
14. The portable electronic device of claim 12, wherein the sliding door comprises a guiding groove combining with the guiding unit and extending along a movement path of the sliding door.
15. The portable electronic device of claim 14, wherein the sliding door further comprises projections protruding from the guiding groove toward the guiding unit to restrict the movement of the sliding door by contacting the guiding unit.
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. SPR sensor cell, comprising:
an under-cladding layer;
a core layer formed so that at least a part of the core layer is adjacent to the under-cladding layer; and
a metal layer covering the core layer,
wherein the core layer includes a uniform refractive index layer and a graded refractive index layer,
wherein the graded refractive index layer is arranged between the uniform refractive index layer and the metal layer, and
wherein a refractive index of the graded refractive index layer is equal to or greater than a refractive index of the uniform refractive index layer, and the refractive index of the graded refractive index layer increases continuously from a surface thereof on a uniform refractive index layer side to a metal layer side in a thickness direction of the graded refractive index layer.
2. The SPR sensor cell according to claim 1, wherein the graded refractive index layer has a thickness from 1 \u03bcm to 30 \u03bcm.
3. The SPR sensor cell according to claim 1, wherein a change in refractive index (\u0394N) of the graded refractive index layer is from 0.001 to 0.035, where \u0394N=Nmax-Nmin, Nmax represents a maximum refractive index of the graded refractive index layer, and Nmin represents a minimum refractive index of the graded refractive index layer.
4. The SPR sensor cell according to claim 1, wherein a thickness (Tb (\u03bcm)) of the graded refractive index layer and a change in refractive index (\u0394N) of the graded refractive index layer satisfy a relationship of 0.5\xd710\u22123\u2266\u0394NTb\u226620.0\xd710\u22123, where \u0394N=Nmax-Nmin, Nmax represents a maximum refractive index of the graded refractive index layer, and Nmin represents a minimum refractive index of the graded refractive index layer.
5. The SPR sensor cell according to claim 1, wherein a refractive index (NCO) of the uniform refractive index layer satisfies a relationship of 1.34\u2266NCO\u22661.43.
6. An SPR sensor, comprising the SPR sensor cell of claim 1.