Image capturing apparatus

• US 9,964,436 B1
• Filed: 11/30/2017
• Issued: 05/08/2018
• Est. Priority Date: 12/11/2015
• Status: Active Grant

• Current Assignee: Gingy Technology Inc.
• Original Assignee: Gingy Technology Inc.
• Inventors: Chung, Chuck, Wu, Jen-Chieh
• Primary Examiner(s): Pervan, Michael
• Application Number:
  US15/826,711
• Publication Number:
  US 20180120149A1
• Time in Patent Office: 159 Days
• CPC Class Codes: A61B 2562/0233 Special features of optical sensors or probes classified in A61B5/00
• CPC Class Codes: A61B 2562/185 Optical shielding, e.g. baffles
• CPC Class Codes: A61B 5/0059 using light, e.g. diagnosis by transillumination, diascopy, fluorescence A61B5/0093, A61B5/1455, A61B5/02416 and A61B5/0261 take precedence
• CPC Class Codes: A61B 5/1172 using fingerprinting
• CPC Class Codes: F21K 9/60 Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
• CPC Class Codes: G01J 1/0411 using focussing or collimating elements, i.e. lenses or mirrors; Aberration correction
• CPC Class Codes: G01J 1/0437 using masks, aperture plates, spatial light modulators, spatial filters, e.g. reflective filters
• CPC Class Codes: G01J 1/06 Restricting the angle of incident light
• CPC Class Codes: G01J 1/4228 arrangements with two or more detectors, e.g. for sensitivity compensation
• CPC Class Codes: G01S 17/04 Systems determining the presence of a target
• CPC Class Codes: G02B 13/14 for use with infrared or ultraviolet radiation G02B13/008, G02B13/16 take precedence
• CPC Class Codes: G02B 5/005 Diaphragms for cameras G03B9/02
• CPC Class Codes: G02B 5/208 for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
• CPC Class Codes: G02B 7/36 using image sharpness techniques , e.g. image processing techniques for generating autofocus signals image data processing per se G06T; in cameras having a solid state image sensor H04N23/67
• CPC Class Codes: G03B 15/00 Special procedures for taking photographs; Apparatus therefor
• CPC Class Codes: G03B 9/06 Two or more co-operating pivoted blades, e.g. iris type shutters functioning as diaphragms by limiting extent of opening movement G03B9/08
• CPC Class Codes: G06V 40/1318 using electro-optical elements or layers, e.g. electroluminescent sensing
• CPC Class Codes: G06V 40/165 using facial parts and geometric relationships
• CPC Class Codes: H03K 17/941 using an optical detector H03K17/968 takes precedence

Abstract

An image capturing apparatus including a cover plate, a light source, a sensor, and a collimator is provided. The light source and the sensor are located on the same side of the cover plate. The collimator is disposed between the cover plate and the sensor, and the collimator includes collimating elements overlapping with each other. Each collimating element includes a transparent substrate and a light absorbing layer disposed on the transparent substrate. The light absorbing layer includes a plurality of light passing openings. The light passing openings expose sensing areas of the sensor. Spacing between the light passing openings is S. A width of each light passing opening is W, and W<S. A transparent substrate thickness of a first collimating element in the collimating elements is T1. A transparent substrate thickness of a second collimating element in the collimating elements is T2. The image capturing apparatus satisfies:

$0.3\times \frac{W}{S}\times T1\le T2\le T1.$

Claims

1. A image capturing apparatus, comprising:

a cover plate;

a light source;

a sensor, disposed next to the light source, wherein the light source and the sensor are located on the same side of the cover plate; and

a collimator, disposed between the cover plate and the sensor and comprising a plurality of collimating elements overlapping with each other, wherein each of the collimating elements comprises a transparent substrate and a light absorbing layer disposed on the transparent substrate, the light absorbing layer comprises a plurality of light passing openings, the light passing openings expose a plurality of sensing areas of the sensor, spacing between the light passing openings is S, a width of each of the light passing openings is W, and W<

S, and a transparent substrate thickness of a first collimating element in the collimating elements is T1, a transparent substrate thickness of a second collimating element in the collimating elements is T2, and the image capturing apparatus satisfies;

2. The image capturing apparatus of claim 1, wherein a plurality of indentations are formed on a surface of the transparent substrate, and the light absorbing layer is disposed in the indentations of the transparent substrate.

3. The image capturing apparatus of claim 1, wherein the image capturing apparatus satisfies:

4. The image capturing apparatus of claim 1, wherein the image capturing apparatus satisfies:

5. The image capturing apparatus of claim 1, wherein the first collimating element is disposed between the second collimating element and the sensor.

6. The image capturing apparatus of claim 1, wherein the second collimating element is disposed between the first collimating element and the sensor.

7. The image capturing apparatus of claim 1, wherein the second collimating element comprises n transparent substrates overlapping with each other, a thickness of each of the n transparent substrates is less than T1, and a total thickness of the n transparent substrates is T2.

8. The image capturing apparatus of claim 1 further comprising:

a display panel, disposed between the cover plate and the collimator.

9. The image capturing apparatus of claim 3 further comprising:

a display panel, disposed between the cover plate and the collimator.

10. The image capturing apparatus of claim 4 further comprising:

a display panel, disposed between the cover plate and the collimator.

11. The image capturing apparatus of claim 8 further comprising:

a band-pass filter layer, disposed between the display panel and the sensor, wherein a light emitting spectrum of the light source falls within a transmission spectrum of the band-pass filter layer.

12. The image capturing apparatus of claim 9 further comprising:

a band-pass filter layer, disposed between the display panel and the sensor, wherein a light emitting spectrum of the light source falls within a transmission spectrum of the band-pass filter layer.

13. The image capturing apparatus of claim 10 further comprising:

a band-pass filter layer, disposed between the display panel and the sensor, wherein a light emitting spectrum of the light source falls within a transmission spectrum of the band-pass filter layer.

14. The image capturing apparatus of claim 8, wherein the display panel is an organic light emitting diode display panel.

15. The image capturing apparatus of claim 7, further comprising:

an adhesion layer, disposed between the n transparent substrates.

16. The image capturing apparatus of claim 3, wherein the second collimating element comprises n transparent substrates overlapping with each other, a thickness of each of the n transparent substrates is less than T1, and a total thickness of the n transparent substrates is T2.

17. The image capturing apparatus of claim 4, wherein the second collimating element comprises n transparent substrates overlapping with each other, a thickness of each of the n transparent substrates is less than T1, and a total thickness of the n transparent substrates is T2.

18. The image capturing apparatus of claim 16, wherein the first collimating element is disposed between the second collimating element and the sensor.

19. The image capturing apparatus of claim 16, wherein the second collimating element is disposed between the first collimating element and the sensor.

20. The image capturing apparatus of claim 17, wherein the second collimating element is disposed between the first collimating element and the sensor.