Imaging lens and imaging apparatus equipped with the imaging lens
US-2016170182-A1 · Jun 16, 2016 · US
Optical imaging system
US10877246B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10877246-B2 |
| Application number | US-201615085429-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 30, 2016 |
| Priority date | Oct 13, 2015 |
| Publication date | Dec 29, 2020 |
| Grant date | Dec 29, 2020 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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Abstract
Official abstract text for this publication.
There is provided an optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The first lens includes a convex object-side surface and a concave image-side surface. The second lens includes a concave object-side surface and a concave image-side surface. The third lens includes a concave object-side surface. The fourth lens includes a concave object-side surface. The fifth lens includes a concave object-side surface and a concave image-side surface. The first to fifth lenses are sequentially disposed from an object side toward an imaging plane.
First claim
Opening claim text (preview).
What is claimed is: 1. An optical imaging system comprising: a first lens comprising a convex object-side surface; a second lens comprising a convex object-side surface and a concave image-side surface; a third lens comprising a positive refractive power and a refractive index greater than 1.60; a fourth lens comprising a concave object-side surface; and a fifth lens comprising a concave object-side surface in a paraxial region, wherein the first to fifth lenses are sequentially disposed from an object side of the optical imaging system toward an imaging plane of the optical imaging system, the optical imaging system comprises a maximum number of five lenses, 0.7<TTL/f<1.1, where TTL is a distance from the object-side surface of the first lens to the imaging plane, and f is an overall focal length of the optical imaging system, and an absolute value of a focal length of the second lens is less than an absolute value of a focal length of the fourth lens. 2. The optical imaging system of claim 1 , wherein the first lens comprises a positive refractive power. 3. The optical imaging system of claim 1 , wherein the second lens comprises a negative refractive power. 4. The optical imaging system of claim 1 , wherein the fourth lens comprises a positive refractive power. 5. The optical imaging system of claim 1 , wherein the fifth lens comprises a negative refractive power. 6. An optical imaging system comprising: a first lens comprising a convex object-side surface; a second lens comprising a convex object-side surface and a concave image-side surface; a third lens comprising a refractive index greater than 1.60; a fourth lens comprising a concave object-side surface; and a fifth lens comprising a concave object-side surface in a paraxial region, wherein the first to fifth lenses are sequentially disposed from an object side of the optical imaging system toward an imaging plane of the optical imaging system, the optical imaging system comprises a maximum number of five lenses, 20<FOV<35, where FOV is one-half of a field of view of the optical imaging system, 0.7<TTL/f<1.1, where TTL is a distance from the object-side surface of the first lens to the imaging plane, and f is an overall focal length of the optical imaging system, and an absolute value of a focal length of the second lens is less than an absolute value of a focal length of the fourth lens. 7. The optical imaging system of claim 6 , wherein the first lens comprises a positive refractive power. 8. The optical imaging system of claim 6 , wherein the second lens comprises a negative refractive power. 9. The optical imaging system of claim 6 , wherein the fourth lens comprises a positive refractive power. 10. The optical imaging system of claim 6 , wherein an object-side surface of the third lens is concave. 11. The optical imaging system of claim 1 , wherein the fourth lens further comprises a refractive index greater than 1.60. 12. The optical imaging system of claim 6 , wherein the fourth lens further comprises a refractive index greater than 1.60. 13. The optical imaging system of claim 6 , wherein the third lens further comprises a positive refractive power. 14. The optical imaging system of claim 6 , wherein a focal length of the first lens is in a range of 2.70 to 3.20.
Assignees
Inventors
Classifications
- G02B13/0045Primary
having five or more lenses · CPC title
for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation · CPC title
for optical correction, e.g. distorsion, aberration · CPC title
Diaphragms (for cameras G03B9/02) · CPC title
having five components only · CPC title
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Frequently asked questions
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- What does patent US10877246B2 cover?
- There is provided an optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The first lens includes a convex object-side surface and a concave image-side surface. The second lens includes a concave object-side surface and a concave image-side surface. The third lens includes a concave object-side surface. The fourth lens includes a concave ob…
- Who is the assignee on this patent?
- Samsung Electro Mech
- What technology area does this patent fall under?
- Primary CPC classification G02B13/0045. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 29 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).