Abstract: An optical filtering assembly comprises a first interference film and a second interference film. The first interference film comprises multiple first film layers and multiple second film layers. The first film layers and the second film layers are alternately stacked. The second interference film comprises multiple third film layers and multiple fourth film layers. The third film layers and the fourth film layers are alternately stacked. An optical constant of the first film layers is same as an optical constant of the third film layers, and an optical constant of the second film layers is same as an optical constant of the fourth film layers, and an Optical Path Difference (OPD) produced in the first interference film is different from an OPD produced in the second interference film.

Abstract: An optical filtering assembly comprises a first interference film and a second interference film. The first interference film comprises multiple first film layers and multiple second film layers. The first film layers and the second film layers are alternately stacked. The second interference film comprises multiple third film layers and multiple fourth film layers. The third film layers and the fourth film layers are alternately stacked. An optical constant of the first film layers is same as an optical constant of the third film layers, and an optical constant of the second film layers is same as an optical constant of the fourth film layers, and an Optical Path Difference (OPD) produced in the first interference film is different from an OPD produced in the second interference film.

Abstract: An optical calibration method for a spectrum measurement device including a light-input part includes: measuring a plurality of narrow-band rays by the light-input part to obtain a plurality of narrow-band spectrum impulse responses, respectively; establishing a stray light database according to the narrow-band spectrum impulse responses; generating a correction program according to the stray light database; measuring a spectral radiant standard light by the light-input part to obtain measurement spectrum data; and generating a calibration coefficient program based on the measurement spectrum data and spectral radiant standard spectrum data, wherein the calibration coefficient program matches the measurement spectrum data with the spectral radiant standard spectrum data, and the spectral radiant standard spectrum data is obtained by measuring the spectral radiant standard light by a standard spectrum measurement device.

Abstract: An optical filtering assembly comprises a first interference film and a second interference film. The first interference film comprises multiple first film layers and multiple second film layers. The first film layers and the second film layers are alternately stacked. The second interference film comprises multiple third film layers and multiple fourth film layers. The third film layers and the fourth film layers are alternately stacked. An optical constant of the first film layers is same as an optical constant of the third film layers, and an optical constant of the second film layers is same as an optical constant of the fourth film layers, and an Optical Path Difference (OPD) produced in the first interference film is different from an OPD produced in the second interference film.

Abstract: An optical calibration method for a spectrum measurement device including a light-input part includes: measuring a plurality of narrow-band rays by the light-input part to obtain a plurality of narrow-band spectrum impulse responses, respectively; establishing a stray light database according to the narrow-band spectrum impulse responses; generating a correction program according to the stray light database; measuring a spectral radiant standard light by the light-input part to obtain measurement spectrum data; and generating a calibration coefficient program based on the measurement spectrum data and spectral radiant standard spectrum data, wherein the calibration coefficient program matches the measurement spectrum data with the spectral radiant standard spectrum data, and the spectral radiant standard spectrum data is obtained by measuring the spectral radiant standard light by a standard spectrum measurement device.

Abstract: An illumination apparatus includes a substrate, an illumination element and a lens structure. The illumination element is disposed on the substrate. The lens structure is disposed above the illumination element, and includes a lens body and a plurality of lens stands. The lens body is positioned above the illumination element. The lens stands are disposed on the bottom of the lens body. The substrate has a plurality of tunnels are around the illumination element. The lens stands respectively insert into the tunnels, so that the lens body is fastened on the substrate.

Abstract: An illumination apparatus includes a substrate, an illumination element and a lens structure. The illumination element is disposed on the substrate. The lens structure is disposed above the illumination element, and includes a lens body and a plurality of lens stands. The lens body is positioned above the illumination element. The lens stands are disposed on the bottom of the lens body. The substrate has a plurality of tunnels are around the illumination element. The lens stands respectively insert into the tunnels, so that the lens body is fastened on the substrate.