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US 8,411,366 B2Granted
Optical probe and optical system therefor
AssigneeSamsung Electronics Co., Ltd.
InventorsMin-Seog Choi, Seung-Wan Lee, Woon-Bae Kim, Seung-Tae Choi
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AssigneeSamsung Electronics Co., Ltd.
InventorsMin-Seog Choi, Seung-Wan Lee, Woon-Bae Kim, Seung-Tae Choi
Estimating the term…
An optical probe and an optical system therefor are provided. The optical probe is includes a housing configured to house the optical system and the housing has a transparent window therein. the optical system includes a light emitting unit, a collimation lens, and a focusing lens. A numerical aperture of the optical system is adjustable by adjusting a pupil diameter of the collimation lens and a focal length of the focusing lens. The pupil diameter of the collimation lens is adjustable based on a variable focal lens or by adjusting a distance between the collimation lens and the light emitting unit.
An optical system comprising:
An optical probe comprising:
An optical probe comprising:
An optical probe comprising:
An optical system comprising:
An optical system comprising:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
Arrangements for scanning: optical coherence imaging
Adapted for particular medical purposes: for introduction into the body, e.g. by catheters
Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow: evaluating blood…
Non-optical details, e.g. housings, mountings, supports: arrangements in relation to a camera or imaging device
About 4 years 8 months of term left · ends 16 Jun 2031 (estimated)
This application claims priority under 35 U.S.C. §119(a) of Korean Patent Application No. 10-2010-0115869, filed on Nov. 19, 2010, in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference
1. Field
The following description relates to an optical apparatus, and more particularly, to an optical probe which is inserted into a tube to pick up an image.
The above and/or other aspects will become apparent and more readily appreciated from the following description of embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a diagram illustrating a lens for explaining a definition of a NA.
FIG. 2A is a diagram illustrating a lens for explaining a relationship between a depth of field and a resolution when NA is large.
The following description is provided to assist the reader in gaining a comprehensive understanding of the methods, apparatuses, and/or systems described herein. Accordingly, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be suggested to those of ordinary skill in the art. Also, descriptions of well-known functions and constructions may be omitted for increased clarity and conciseness. It will also be understood that when a first layer is referred to as being “on” a second layer, it can be directly on the second layer, or intervening layers may also be present.
Elements, features, and structures are denoted by the same reference numerals throughout the drawings and the detailed description, and the size and proportions of some elements may be exaggerated in the drawings for clarity and convenience.
FIG. 1 illustrates a lens for explaining a definition of NA. An NA of an optical system is a dimensionless number that specifies the range of angles over which the optical system can accept or emit light. The definite definition of NA may differ among various fields of optics, and in an optical system such as an object lens, the NA of a lens may be defined as Equation 1 below.