Structured illuminating microscopy apparatus

Abstract

An acquiring unit of a structured illuminating microscopy apparatus acquires at least two modulated images having the same wave number vector and the different phases; and a calculating unit of the structured illuminating microscopy apparatus, in a spatial frequency spectrum of each of at least the two modulated images acquired by the acquiring unit, separates a 0th-order modulating component and ±first-order modulating components of observational light fluxes superimposed on arbitrary two observation points based on at least four observation values regarding the two observation points which are mutually displaced by an amount of the wave number vector.

What is claimed is: 
     
         1 . A structured illuminating microscopy apparatus, comprising:
 an illuminating optical system performing a spatial modulation on a sample by fringes;   an image-forming optical system forming an image of an observational light flux from the sample being performed the spatial modulation;   an acquiring unit controlling at least one of a wave number vector of the fringes and a phase of the fringes, and acquiring a modulated image of the sample; and   a calculating unit generating an image of the sample based on the modulated image acquired by the acquiring unit, wherein:   the acquiring unit acquires a first modulated image having a first wave number vector of the fringes and a first phase of the fringes, a second modulated image having the first wave number vector of the fringes and a second phase of the fringes, a third modulated image having a second wave number vector of the fringes, and a fourth modulated image having a third wave number vector of the fringes being a linear combination of the first wave number vector of the fringes and the second wave number vector of the fringes; and   the calculating unit restores the modulated image based on observation points mutually displaced by an amount of the first wave number vector in a spatial frequency spectrum of the first modulated image having the first wave number vector and the first phase of the fringes and observation points mutually displaced by the amount of the first wave number vector in a spatial frequency spectrum of the second modulated image having the first wave number vector and the second phase of the fringes, and generates an image of a specimen based on the first modulated image, the second modulated image, the third modulated image, and the fourth modulated image.   
     
     
         2 . The structured illuminating microscopy apparatus according to  claim 1 , wherein
 the calculating unit generates the image of the specimen based on observation points in a first spatial frequency spectrum of the first modulated image, in a second spatial frequency spectrum of the second modulated image, in a third spatial frequency spectrum of the third modulated image, and in a fourth spatial frequency spectrum of the fourth modulated image.   
     
     
         3 . The structured illuminating microscopy apparatus according to  claim 1 , wherein
 the calculating unit generates the image of the specimen based on three observation points in a first spatial frequency spectrum of the first modulated image, three observation points in a second spatial frequency spectrum of the second modulated image, three observation points in a third spatial frequency spectrum of the third modulated image, and three observation points in a fourth spatial frequency spectrum of the fourth modulated image.   
     
     
         4 . The structured illuminating microscopy apparatus according to  claim 2 , wherein
 two observation points among the three observation points in the first spatial frequency spectrum are mutually displaced the amount of the first wave number vector.   
     
     
         5 . The structured illuminating microscopy apparatus according to  claim 3 , wherein
 two observation points among the three observation points in the first spatial frequency spectrum are mutually displaced the amount of the second wave number vector.   
     
     
         6 . The structured illuminating microscopy apparatus according to  claim 3 , wherein
 the three wave number vectors are the vectors having a same magnitude and whose directions are different from one another by 120°.