Light sensing device having a cover with a hole for passing light and method of selectively enabling light sensing element in light sensing device

Patent metadata

Field	Value
Publication number	US-9478676-B2
Application number	US-201414548296-A
Country	US
Kind code	B2
Filing date	Nov 20, 2014
Priority date	Jun 4, 2014
Publication date	Oct 25, 2016
Grant date	Oct 25, 2016

Abstract

A light sensing device includes a substrate, a plurality of light sensing elements and a cover. The plurality of light sensing elements are disposed on the substrate for sensing light. The cover is utilized for sheltering the plurality of light sensing elements, wherein the cover includes a hole for passing the light. A set of the plurality of light sensing elements is selected to be enabled according to a location of the hole relative to the plurality of light sensing elements.

First claim

What is claimed is:

1. A light sensing device, comprising:
a substrate;
a plurality of light sensing elements, disposed on the substrate, for sensing light; and
a cover, for sheltering the plurality of light sensing elements, wherein the cover comprises a hole for passing the light;
wherein a set of the plurality of light sensing elements is selected to be turned on according to a location of the hole relative to the plurality of light sensing elements.

2. The light sensing device of claim 1 , wherein each of the plurality of light sensing elements other than the set of the plurality of light sensing elements is turned off.

3. The light sensing device of claim 1 , further comprising a lens or a transparent glue disposed in the hole for condensing the light.

4. The light sensing device of claim 1 , wherein the plurality of light sensing elements are arranged as an array.

5. The light sensing device of claim 1 , wherein shapes, areas and lengths of the plurality of light sensing elements are the same or different.

6. The light sensing device of claim 1 , wherein at least one light sensing element among the plurality of light sensing elements is surrounded by light sensing elements having a size smaller than the at least one light sensing element.

7. The light sensing device of claim 1 , wherein an incident angle of the light is within a view angle of the set of the plurality of light sensing elements.

8. The light sensing device of claim 1 , wherein the set of the plurality of light sensing elements comprises a light sensing element within a first closed region formed according to a location of the hole.

9. The light sensing device of claim 8 , wherein the first closed region further comprises a second closed region, and the set of the plurality of light sensing elements comprises a part of the plurality of light sensing elements within the first closed region and outside the second closed region, and the set of the plurality of light sensing elements does not comprise a part of the plurality of light sensing elements within the second closed region.

10. The light sensing device of claim 9 , wherein the first closed region and the second closed region are circular or elliptic.

11. The light sensing device of claim 9 , wherein the first closed region is a crisscross region, and the second closed region is an intersectional part of the crisscross region.

12. A method of arranging light sensing elements for a light sensing device comprising:
disposing a plurality of light sensing elements on a substrate for sensing light;
disposing a cover for sheltering the plurality of light sensing elements, wherein the cover comprises a hole for passing the light; and
selecting to turn on a set of the plurality of light sensing elements according to a location of the hole relative to the plurality of light sensing elements.

13. The method of claim 12 , further comprising:
selecting to turn off each of the plurality of light sensing elements other than the set of the plurality of light sensing elements.

14. The method of claim 12 , wherein the step of selecting to turn on the set of the plurality of light sensing elements according to the location of the hole relative to the plurality of light sensing elements comprises:
selecting to turn on a first light sensing element among the plurality of light sensing elements when the light passing through the hole directly irradiates the first light sensing element; and
selecting to turn off a second light sensing element among the plurality of light sensing elements when the light passing through the hole does not directly irradiate the second light sensing element.

Assignees

• Sensortek Tech Corp

Inventors

• Lin Meng-Yong
• Hsu Feng-Jung
• Liu Ming-Huang

Classifications

• G01J1/4228

  arrangements with two or more detectors, e.g. for sensitivity compensation · CPC title

• G01S17/04

  Systems determining the presence of a target · CPC title

• G01S3/784

  using a mosaic of detectors · CPC title

• G01J1/0228

  Control of working procedures; Failure detection; Spectral bandwidth calculation · CPC title

• G01S7/4816

  of receivers alone · CPC title