Sensing Device With A Shield
In one embodiment, a sensing device comprising a substrate, an emitter, a receiver and a shield is disclosed. The shield may be arranged to shield at least partially the emitter and the receiver. The shield may have a stopper and a reflector cup. The stopper may be a retention mean for engaging the substrate adjacent to the receiver such that a shield surface of the shield may be arranged distanced away from the receiver. The reflector cup may also engage the substrate adjacent to the emitter, so that the shield surface may be arranged distanced away from the emitter. In other embodiments, a sensing apparatus and a sensor having a stopper or a retention member are disclosed.
1 . A sensing device, comprising:
an emitter;
a receiver;
a substrate, the substrate having a component side configured to receive at least one of the emitter and the receiver;
a shield configured to shield at least partially the emitter and the receiver;
a shield surface of the shield, the shield surface being distanced away from the component side;
a reflector cup of the shield engaging the substrate adjacent to the emitter; and
a stopper of the shield engaging the substrate adjacent to the receiver.
2 . The sensing device of claim 1 , wherein the shield comprises a main portion and an assembly portion, and wherein the assembly portion is removably attachable to the main portion.
3 . The sensing device of claim 2 , wherein the shield further comprises an interlocking structure substantially adjoining the main portion and the assembly portion.
4 . The sensing device of claim 2 , wherein the assembly portion comprises the reflector cup.
5 . The sensing device of claim 1 , wherein the stopper of the shield is configured to engage directly the component side of the substrate.
6 . The sensing device of claim 1 , wherein the substrate comprises a receiver optical element coupled to the receiver, and wherein the stopper of the shield engages the receiver optical element.
7 . The sensing device of claim 1 , wherein the shield further comprises at least one sidewall and wherein the stopper is formed on the at least one sidewall.
8 . A sensing apparatus for sensing an external object, comprising:
a component side;
an emitter attached on the component side, the emitter configured to emit a radiation to be reflected off the external object;
a receiver attached on the component side, the receiver configured to detect a portion of the radiation reflected thereof from the external object;
a shield substantially covering on the component side so as to shield at least partially the emitter and receiver from ambient radiation; and
a shield surface of the shield facing the external object, the shield surface being distanced away from the component side, wherein the shield comprises a retention member adjacent to the receiver so that the shield surface is retained at least a predetermined distance away from the receiver when the shield covers on the component side.
9 . The sensing apparatus of claim 8 further comprising a reflector cup, wherein the reflector cup comprises a tapered end facing the component side and a widening end adjoining the shield surface.
10 . The sensing apparatus of claim 9 , wherein the tapered end engages the component side such that the emitter is at least the predetermined distance away from the shield surface.
11 . The sensing apparatus of claim 8 , wherein the shield comprises a main portion substantially form fitting the component side, and an assembly portion removeably attachable to the main portion.
12 . The sensing apparatus of claim 11 , wherein the main portion comprises a sealing surface fixed to the component side.
13 . The sensing apparatus of claim 11 , wherein the shield further comprises an interlocking structure substantially adjoining the assembly portion and the main portion.
14 . The sensing apparatus of claim 13 , wherein the interlocking structure comprises at least a protruding beam protruding substantially perpendicular relative to the shield surface.
15 . The sensing apparatus of claim 13 , wherein the assembly portion comprises a reflector cup, the interlocking structure comprises first and second tabs, and therebetween is interposed the reflector cup.
16 . The sensing apparatus of claim 8 , wherein the retention member comprises a dimple extending into a sidewall of the shield.
17 . The sensing apparatus of claim 8 , wherein the retention member comprises a protruding ear extending substantially orthogonally from a sidewall of the shield.
18 . The sensing apparatus of claim 8 , wherein the retention member comprises a retention member surface distanced away but extending substantially in parallel relative to the shield surface.
19 . The sensing apparatus of claim 8 wherein the sensing apparatus forms a portion of a proximity sensor.
20 . A sensor, comprising:
a substrate extending along a longitudinal axis;
a shield, the shield having a shield surface;
a first die and a second die positioned along the longitudinal axis;
a first stopper of the shield approximating the first die and engaging the substrate so that the first die is arranged at a first predetermined distance away from the shield surface; and
a second stopper of the shield approximating the second die and engaging the substrate so that the second die is arranged at a second predetermined distance away from the shield surface.