US 12,736,796 B2Granted

Observation apparatus

AssigneeEvident Corporation

InventorsKentaro Yamazaki, Kenji Kawasaki, Kenichi Kusaka, Izumi Shomura

Life of this patent

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Abstract

An observation apparatus includes a display apparatus that displays a display pattern, a display projection optical system that projects a light beam from the display apparatus and forms an image of the display pattern, a combining optical element that combines a light beam from a sample and the light beam from the display apparatus, and an eyepiece optical system through which an image of the sample and an image of the display pattern are simultaneously observable by an observer. A numerical aperture (NA) of the light beam from the display apparatus is smaller than a maximum value and larger than a minimum value of an NA of the light beam from the sample, at a position of an image on an optical path that is formed after the light beams from the sample and the display apparatus are combined by the combining optical element.

Claims18

Dependent claims

An observation apparatus comprising:

an observation optical system configured to image a light beam from a sample, and to form an image of the sample;
a display apparatus configured to display a display pattern;
a display projection optical system configured to project a light beam from the display apparatus, and to form an image of the display pattern at a position at which the image of the sample is formed;
a combining optical element configured to combine the light beam from the sample and the light beam from the display apparatus;
and
an eyepiece optical system through which an image of the sample and an image of the display pattern are simultaneously observable by an observer,
wherein a numerical aperture (NA) of the light beam from the display apparatus is smaller than a maximum value of an NA of the light beam from the sample, and is larger than a minimum value of the NA of the light beam from the sample, at a position of an image on an optical path that is formed after the light beam from the sample and the light beam from the display apparatus are combined by the combining optical element.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/935,107Filed 1 Nov 2024 · continuation
Priority: JP 2021-10835930 Jun 2021
Published: US 2025/0060577 A120 Feb 2025
Granted: 15 Sep 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G02B 21/368
Arranged for photographic purposes or projection purposes or digital imaging or video purposes including associated control and data processing…:…
G02B 21/0032
Confocal scanning microscopes or confocal "macroscopes"; Accessories which are not restricted to use with CSOMs, e.g. sample holders: optical…
G02B 21/0044
Scanning details, e.g. scanning stages: moving apertures, e.g. Nipkow disks, rotating lens arrays
G02B
Optical elements, systems or apparatus

Family

Application17/849,263Parent of this continuation · filed 24 Jun 2022
US 2025/0060577 A1Pre-grant publication · published 20 Feb 2025
US 12,164,099 B2Parent of this continuation
US 2023/0003990 A1Published application
US 12,736,796 B2This patent

From the US filing history. Foreign family members aren’t listed.