Scanner module and image scanning apparatus employing the same
A scanner module and an image scanning apparatus employing the same. The scanner module comprises an illuminator for illuminating light on an object to be scanned. The illuminator includes a light emitting diode, a light guide extending in a main scanning direction to change a direction of the light received from the light emitting diode, and at least one elastic member to elastically support at least one longitudinal end of the light guide. As the light guide is elastically supported by the elastic member, convex deformation or bowing of an emission face of the light guide due to thermal expansion can be reduced.
1. A scanner module for use in an image scanning apparatus to scan an object, comprising:
a light source configured to produce light emitted by the scanner module to scan the object; and
a heat radiating member made of an elastically deformable material to cause the light source to come into close contact with the heat radiating member and configured to dissipate heat generated from the light source when the light source produces the light.
2. The scanner module according to claim 1 , wherein the radiating member comprises a metallic leaf spring.
3. The scanner module according to claim 1 , wherein the heat radiating member is made of a thermally conductive material.
4. The scanner module according to claim 1 , wherein the light source comprises a light emitting diode.
5. An image scanning apparatus, comprising:
a scanner module,
wherein the scanner module comprises:
an illuminator configured to illuminate light on an object to be scanned; and
a sensor configured to detect the light reflected from the object,
wherein the illuminator comprises:
a light source configured to produce the light illuminated on the object to scan the object; and
a heat radiating member to dissipate heat generated from the light source when the light source produces the light, the heat radiating member being made of an elastically deformable material.
6. The image scanning apparatus according to claim 5 , wherein the heat radiating member is made of a thermally conductive material.
7. The image scanning apparatus according to claim 5 , wherein the light source comprises a light emitting diode.
8. A scanner module for use in an image scanning apparatus to scan an object, comprising:
a light source configured to produce light;
a heat radiating member configured to dissipate heat generated from the light source; and
a light guide having an elongated shape with its length extending along a first direction, the light guide being configured to receive the light from the light source, and to change a direction of the received light,
wherein the heat radiating member is in contact with the light source.
9. The scanner module according to claim 8 , wherein the light source is mounted on the longitudinal end of the light guide.
10. The scanner module according to claim 9 , wherein the light source comprises a pair of light sources, and
wherein the heat radiating member comprises a pair of heat radiating members to come contact with the pair of light sources respectively.
11. The scanner module according to claim 8 , wherein the heat radiating member includes a first portion in contact with the light source to dissipate heat generated from the light source and a second portion extending from the first portion without making contact with the light source.
12. An image scanning apparatus, comprising:
a scanner module,
wherein the scanner module comprises:
an illuminator configured to illuminate light on an object to be scanned; and
a sensor configured to detect the light reflected from the object,
wherein the illuminator comprises:
a light source configured to produce the light;
a light guide having an elongated shape with its length extending along a first direction, the light guide being configured to receive the light from the light source, and to change a direction of the received light; and
a heat radiating member to dissipate heat generated from the light source, and
wherein the heat radiating member is in contact with light source.
13. The image scanning apparatus according to claim 12 , wherein the heat radiating member is a made of an elastically deformable material to cause the light source to come into close contact with the heat radiating member.
14. The image scanning apparatus according to claim 13 , wherein the radiating member comprises a metallic leaf spring.
15. The image scanning apparatus according to claim 12 , wherein the light source holder is mounted on the longitudinal end of the light guide.
16. The image scanning apparatus according to claim 15 , wherein the light source comprises a pair of light sources, and
wherein the heat radiating member comprises a pair of heat radiating members to come in contact with the pair of light sources respectively.
17. The image scanning apparatus according to claim 12 , wherein the heat radiating member includes a first portion in contact with the light source to dissipate heat generated from the light source and a second portion extending from the first portion without making contact with the light source.