Title:
OPTICAL DEVICE
Document Type and Number:
Japanese Patent JP2019168404
Kind Code:
A
Abstract:
To improve the contrast of hyper-spectral camera (HSC) using an LVF at low cost.SOLUTION: Provided is a hyper-spectral camera 100 comprising: a linear variable filter (LVF) 102 including a region where an optical thin film constituting a band-pass filter, a short-pass filter and a long-pass filter is arranged and a light transmissive region where the optical thin film is not arranged and the amount of transmitted light per unit area is larger than for the optical thin film; and a two-dimensional image sensor 105 for receiving light having passed through the LVF 102 and capturing an image while moving the LVF 102 relative to an imaging object, the two-dimensional image sensor 105 capturing a plurality of different single-wavelength images on the basis of the light having passed through the optical thin film and capturing a plurality of wide-band images in a wavelength band including different single wavelengths on the basis of the light having passed through the light transmissive region.SELECTED DRAWING: Figure 1
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Inventors:
AKIBA MASAHIRO
SETA MAKOTO
SETA MAKOTO
Application Number:
JP2018057975A
Publication Date:
October 03, 2019
Filing Date:
March 26, 2018
Export Citation:
Assignee:
TOPCON CORP
International Classes:
G01J3/26; G02B5/28; G03B11/00; G03B17/02; H04N5/225
Domestic Patent References:
| JP2015219122A | 2015-12-07 | |||
| JP2016218144A | 2016-12-22 | |||
| JPH04125429A | 1992-04-24 | |||
| JP2011226876A | 2011-11-10 | |||
| JP2016156801A | 2016-09-01 |
Foreign References:
| US20090168182A1 | 2009-07-02 |
Attorney, Agent or Firm:
Suenari Mikio