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Optical system including lenses and prism for telephoto cameras | [
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An optical system for a camera may include a lens group having a plurality of lenses, a prism, and an image sensor. The prism may be positioned, optically, between the plurality of lenses and the image sensor along the optical transmitting path of the light. The prism may include at least four surfaces, which may fold ... | [
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What is claimed is:
1. A camera, comprising:
a plurality of lenses;
an image sensor; and
a prism configured to:
transmit light passing through the plurality of lenses through a first surface into the prism, wherein the first surface provides an initial transmission surface of the prism to receive th... | [
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m, at least some of the light reflected from the second surface of the prism;
reflect, at a third surface of the prism, at least some of the light reflected from the first surface of the prism; and
reflect, at a fourth surface of the prism, at least some of the light reflected from the third surface of the prism to... | [
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of the second surface or the fourth surface of the prism includes a reflective coating.
3. The camera of claim 1 , wherein at least one of the first surface or third surface of the prism includes an anti-reflective coating.
4. The camera of claim 1 , wherein the plurality of le... | [
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d an image plane of the image sensor, and A represents a total Z-height of the camera between a front surface of a first lens of the plurality of lenses and the image plane of the image sensor.
7. The camera of claim 6 , wherein the partial Z-height of the camera is in a range between 3.57 and 5.6 ... | [
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amera is in a range of 17.2 and 27.2 millimeters.
10. The camera of claim 1 , wherein a ratio E/F is in a range between 0.2 and 0.8, wherein E represents a thickness of the prism between the first surface and the third surface of the prism and F represents a thickness of the plurality of lenses bet... | [
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12. The camera of claim 1 , wherein the prism includes a plurality of prisms joined together using an optical cement.
13. The camera of claim 12 , wherein the prism includes one or more aperture masks inside the prism configured to reduce flare.
14. The camera of cl... | [
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device, comprising:
one or more cameras; and
one or more processors configured to process image signals generated from the one or more cameras,
wherein at least one of the one or more cameras includes:
a plurality of lenses;
an image sensor; and
a prism configured to:
transmit light passing through the plur... | [
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le between the first surface and the second surface of the prism is in a range between 25 and 35 degrees;
reflect, at the first surface of the prism, at least some of the light reflected from the second surface of the prism;
reflect, at a third surface of the prism, at least some of the light reflected from the fir... | [
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face, and the fourth surface reaches the image sensor to image the subject.
17. The device of claim 16 , wherein at least one of the second surface or the fourth surface of the prism includes a reflective coating.
18. The device of claim 16 , wherein an F-number of the at... | [
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e prism is parallel to the fourth surface of the prism.
20. An optical system, comprising:
a plurality of lenses; and
a prism having at least four surfaces, wherein the prism is configured to:
transmit light passing through the plurality of lenses through a first surface into the prism, wherein ... | [
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s in a range between 25 and 35 degrees;
reflect, at the first surface of the prism, at least some of the light reflected from the second surface of the prism;
reflect, at a third surface of the prism, at least some of the light reflected from the first surface of the prism; and
reflect, at a fourth surface of the... | [
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This application is a continuation of U.S. patent application Ser. No. 17/481,213, filed Sep. 21, 2021, which claims benefit of priority to U.S. Provisional Application Ser. No. 63/083,038, entitled “Optical System for Telephoto Cameras,” filed Sep. 24, 2020, and which are hereby incorporated herein by reference in the... | [
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a need for high-resolution, small form factor cameras for integration in the devices. Therefore, it is desirable to have an optical system suitable for small form factor, high-quality telephoto cameras.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows an example optical system, acco... | [
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ents.
FIG. 5 shows example values of some parameters for some example optical systems, according to some embodiments.
FIGS. 6 A- 6 H show example values of some additional parameters for some example optical systems, according to some embodiments.
FIG. 7 shows a high-level flowch... | [
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e computer system that may include a camera having an optical system, according to some embodiments.
This specification includes references to “one embodiment” or “an embodiment.” The appearances of the phrases “in one embodiment” or “in an embodiment” do not necessarily refer to the same embodime... | [
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cs circuitry, etc.).
“Configured To.” Various units, circuits, or other components may be described or claimed as “configured to” perform a task or tasks. In such contexts, “configured to” is used to connote structure by indicating that the units/circuits/components include structure (e.g., circuitry) that perfor... | [
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