Optical apparatus

Patent metadata

Field	Value
Publication number	US-9843706-B2
Application number	US-201514883057-A
Country	US
Kind code	B2
Filing date	Oct 14, 2015
Priority date	Oct 31, 2014
Publication date	Dec 12, 2017
Grant date	Dec 12, 2017

Abstract

An optical apparatus includes plural optical lens groups, an optical sensor and a casing. After a light beam passes through any of the plural optical lens groups, a travelling direction of the light beam is changed. Moreover, after the light beam passes through at least one of the plural optical lens groups, the light beam is sensed by the optical sensor and converted into an image signal by the optical sensor. The plural optical lens groups and the optical sensor are accommodated and fixed within the casing. The optical apparatus has a single optical lens module, and is able to implement different optical function simultaneously. Consequently, the overall volume of the optical apparatus is minimized, and the fabricating cost of the optical apparatus is reduced.

First claim

What is claimed is:

1. An optical apparatus, comprising:
plural optical lens groups, wherein after a light beam passes through any of the plural optical lens groups, a travelling direction of the light beam is changed;
an optical sensor, wherein after the light beam passes through at least one of the plural optical lens groups, the light beam is sensed by the optical sensor; and
a casing, wherein the plural optical lens groups and the optical sensor are accommodated and fixed within the casing, and the optical apparatus satisfies a mathematic formula:

0.75
·

A
s

<

∑

j
=
1

n

⁢

⁢

A

C
,
j

<

1.5
·

A
s

;

wherein A s is an effective sensing range of the optical sensor, A c,j is a projection range of the j-th optical lens group relative to the optical sensor, and n is a number of the plural optical lens groups.

2. The optical apparatus according to claim 1 , wherein the plural optical lens groups comprise a first optical lens group with a first optical axis and a second optical lens group with a second optical axis, wherein the first optical axis and the second optical axis are not overlapped with each other.

3. The optical apparatus according to claim 1 , further comprising a light shielding plate, wherein the light shielding plate is located at front sides of the plural optical lens groups, and the light shielding plate has plural perforations corresponding to the plural optical lens groups.

4. The optical apparatus according to claim 1 , wherein one of the plural optical lens groups is a center optical lens group, and the other optical lens groups of the plural optical lens groups are peripheral optical lens groups around the center optical lens group.

5. The optical apparatus according to claim 1 , wherein the plural optical lens groups comprise a first optical lens group with a first lens and a second optical lens group with a second lens, wherein the first lens and the second lens are integrally formed with each other.

6. The optical apparatus according to claim 1 , wherein plural optical lens groups comprise a visible optical lens group and an invisible optical lens group, wherein after at least one visible light beam passes through the visible optical lens group, a travelling direction of the at least one visible light beam is changed, wherein after at least one invisible light beam passes through the invisible optical lens group, a travelling direction of the at least one invisible light beam is changed.

7. The optical apparatus according to claim 1 , wherein each of the plural optical lens groups comprises a single lens or plural lenses in a stack arrangement, wherein each lens is made of a plastic material, a glass material or a silicon-based material.

8. The optical apparatus according to claim 1 , wherein the plural optical lens groups comprise four optical lens groups or more than four optical lens groups.

9. The optical apparatus according to claim 1 , wherein the optical apparatus is an optical image capturing apparatus.

10. An optical apparatus, comprising:
plural optical lens groups, wherein after a light beam passes through any of the plural optical lens groups, a travelling direction of the light beam is changed;
an optical sensor, wherein after the light beam passes through at least one of the plural optical lens groups, the light beam is sensed by the optical sensor; and
a casing, wherein the plural optical lens groups and the optical sensor are accommodated and fixed within the casing, and the optical apparatus satisfies a mathematic formula:
0.3· f avg <Δf< 1.2· f avg;

wherein f avg is an average of focal lengths of the plural optical lens groups, and Δf is the largest focal length difference between the focal lengths of the plural optical lens groups.

11. The optical apparatus according to claim 10 , wherein the plural optical lens groups have respective optical axes, wherein an inclined angle between any two of the optical axes of the plural optical lens groups is smaller than 10 degrees.

12. The optical apparatus according to claim 10 , further comprising at least one filter, wherein the at least one filter is arranged between the plural optical lens groups and the optical sensor, wherein after the light beam passes through any of the plural optical lens groups, a portion of the light beam is filtered and sieved by the at least one filter.

13. The optical apparatus according to claim 12 , wherein a visible light beam, an infrared light beam, a near infrared light beam and/or a far infrared light beam is blocked by the at least one filter.

14. The optical apparatus according to claim 10 , wherein the optical apparatus further satisfies a mathematic formula:

0.75
·

A
s

<

∑

j
=
1

n

⁢

⁢

A

C
,
j

<

1.5
·

A
s

;

wherein A s is an effective sensing range of the optical sensor, A c,j is a projection range of the j-th optical lens group relative to the optical sensor, and n is a number of the plural optical lens groups.

15. The optical apparatus according to claim 10 , wherein plural optical lens groups comprise a visible optical lens group and an invisible optical lens group, wherein after at least one visible light beam passes through the visible optical lens group, a travelling direction of the at least one visible light beam is changed, wherein after at least one invisible light beam passes through the invisible optical lens group, a travelling direction of the at least one invisible light beam is changed.

16. An optical apparatus, comprising:
a first optical lens group with a first lens and a second optical lens group with a second lens, wherein the first lens and the second len

Assignees

• Everready Prec Ind Corp

Inventors

• Chern Jyh-Long
• Yen Chih-Ming

Classifications

• H04N23/54 Primary

  Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils · CPC title

• G02B13/0085 Primary

  employing wafer level optics · CPC title

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title

• H04N5/2254

  Electricity · mapped topic

• G02B3/0043

  Inhomogeneous or irregular arrays, e.g. varying shape, size, height · CPC title