Digital projector, machine tool, and projected image display method

Patent metadata

Field	Value
Publication number	US-12585174-B2
Application number	US-202218281228-A
Country	US
Kind code	B2
Filing date	Jan 11, 2022
Priority date	Mar 17, 2021
Publication date	Mar 24, 2026
Grant date	Mar 24, 2026

Abstract

A digital projector according to one aspect includes: a light source that irradiates an object to be machined with light; a low-magnification camera mechanism that captures a projected image of the object to be machined, generated by the irradiation by the light source; a beam splitter provided on a light path of the projected image; a high-magnification camera mechanism that captures the projected image, split by the beam splitter, in a range narrower than the low-magnification camera mechanism and at a magnification higher than the low-magnification camera mechanism; and a display that displays a low-magnification image captured by the low-magnification camera mechanism and a high-magnification image captured by the high-magnification camera mechanism. The high-magnification camera mechanism includes a high-magnification image-forming lens that enlarges the projected image to a predetermined magnification, a high-magnification camera that captures the projected image enlarged, and a high-magnification camera movement mechanism that changes an imaging position of the high-magnification camera with respect to the projected image.

First claim

The invention claimed is:

1 . A digital projector comprising:
a light source configured to irradiate an object to be machined with light; a low-magnification camera mechanism configured to capture a projected image of the object to be machined, generated by the irradiation by the light source; a beam splitter provided on a light path of the projected image; a high-magnification camera mechanism configured to capture the projected image, split by the beam splitter, in a range narrower than the low-magnification camera mechanism and at a magnification higher than the low-magnification camera mechanism; and a display configured to display a low-magnification image captured by the low-magnification camera mechanism and a high-magnification image captured by the high-magnification camera mechanism, wherein the high-magnification camera mechanism includes a high-magnification image-forming lens configured to enlarge the projected image to a predetermined magnification, a high-magnification camera configured to capture the projected image enlarged, and a high-magnification camera movement mechanism configured to change an imaging position of the high-magnification camera with respect to the projected image, a display position of the high-magnification image on the display is changeable, and the high-magnification camera movement mechanism is configured to change the imaging position of the high-magnification camera in accordance with a change in the display position of the high-magnification image and is configured to be able to move the imaging position of the high-magnification camera relatively with respect to the low-magnification camera mechanism.

2 . The digital projector according to claim 1 , wherein
an intermediate focus is formed on a light path between the object to be machined and the low-magnification camera mechanism and/or the high-magnification camera mechanism, the low-magnification camera mechanism is configured to capture one of a projected image transmitted through and split by the beam splitter and a projected image reflected and split by the beam splitter, and the high-magnification camera mechanism is configured to capture the other of the projected image transmitted through and split by the beam splitter and the projected image reflected and split by the beam splitter.

3 . The digital projector according to claim 1 , wherein the low-magnification image and the high-magnification image are displayable in an overlapping manner on the display.

4 . A machine tool comprising
the digital projector according to claim 1 .

5 . A projected image display method using the digital projector according to claim 1 , the projected image display method comprising:
irradiating an object to be machined with light; capturing a projected image of the object to be machined, generated by the light irradiation step, with the low-magnification camera mechanism; capturing the projected image, split by the beam splitter, with the high-magnification camera mechanism in a range narrower than the low-magnification camera mechanism and at a magnification higher than the low-magnification camera mechanism; and displaying, on the display, a low-magnification image captured by the low-magnification imaging step and a high-magnification image captured by the high-magnification imaging step.

Assignees

• Amada Co Ltd
• Amada Machinery Co Ltd

Inventors

• Kanayama Masahiro
• Matsubara Fumihiko
• Tsunekawa Yoshihiro

Classifications

• G03B5/00

  Adjustment of optical system relative to image or object surface other than for focusing · CPC title

• G03B19/22

  Double cameras · CPC title

• G03B17/54 Primary

  with projector · CPC title

• B24B17/04

  involving optical auxiliary means, e.g. optical projection form grinding machines · CPC title

• B23Q17/24 Primary

  using optics {or electromagnetic waves} · CPC title