SpectralViewer, spectraView
Spectral graph plot
Free
1.5for iPhone, iPad and more
7.5
4 Ratings
Junichi Watanabe
Developer
14.1 MB
Size
Jul 30, 2020
Update Date
Education
Category
4+
Age Rating
Age Rating
SpectralViewer, spectraView Screenshots
About SpectralViewer, spectraView
By using iPhone or iPad camera, you can measure a spectral intensity of the light by a spectrum image from a spectrometer.
Press camera > photo button to shoot a spectrum image dispersed by the spectrometer. If reflected light is observed, please be the in the area of the dark rectangle on the upper side of the camera screen. For iPadOS 13, open the Control Center and then tap the "Lock Orientation" button to avoid rotating the spectrum capture area.
Press the graph button to show the light intensity distribution of the spectrum calculated by the camera image. The values of R, G and B are respectively calculated as the average value of the central quarter width of the spectral image. Adjust the intensity of the input light by, for example, narrowing the slit so that each color does not exceed the maximum value 255. The value of R+G+B is also plotted in black. You can change the plot scale of spectral intensity by ＜＞ button.
By pressing the plot button, sliding the upper spectral image to the left and right, and entering two points with known wavelengths, you can plot the wavelength scale. If the R0 wavelength is set as reflected light (0 nm) and the R1 wavelength is set only for the first time, the wavelength scale is plotted only by setting the R0 wavelength after the second time. You can save the plot with wavelength scale as image. For the data to be stored, a filter was applied so as to smoothly connect the intensity curves of the sensitivity wavelength regions of R, G and B colors.
Because it is very dangerous, please never see strong light such as the sun, and please do not put it in the iPhone's camera.
Press camera > photo button to shoot a spectrum image dispersed by the spectrometer. If reflected light is observed, please be the in the area of the dark rectangle on the upper side of the camera screen. For iPadOS 13, open the Control Center and then tap the "Lock Orientation" button to avoid rotating the spectrum capture area.
Press the graph button to show the light intensity distribution of the spectrum calculated by the camera image. The values of R, G and B are respectively calculated as the average value of the central quarter width of the spectral image. Adjust the intensity of the input light by, for example, narrowing the slit so that each color does not exceed the maximum value 255. The value of R+G+B is also plotted in black. You can change the plot scale of spectral intensity by ＜＞ button.
By pressing the plot button, sliding the upper spectral image to the left and right, and entering two points with known wavelengths, you can plot the wavelength scale. If the R0 wavelength is set as reflected light (0 nm) and the R1 wavelength is set only for the first time, the wavelength scale is plotted only by setting the R0 wavelength after the second time. You can save the plot with wavelength scale as image. For the data to be stored, a filter was applied so as to smoothly connect the intensity curves of the sensitivity wavelength regions of R, G and B colors.
Because it is very dangerous, please never see strong light such as the sun, and please do not put it in the iPhone's camera.
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What's New in the Latest Version 1.5
Last updated on Jul 30, 2020
Old Versions
Fixed a bug that the app does not launch on iPadOS 13.
For iPadOS 13, you can stop the rotation of the spectrum capture area, by enabling the "Lock Orientation" button in the Control Center.
Since no function has been added, there is no need to update if the app is working properly.
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Version History
1.5
Jul 30, 2020
Fixed a bug that the app does not launch on iPadOS 13.
For iPadOS 13, you can stop the rotation of the spectrum capture area, by enabling the "Lock Orientation" button in the Control Center.
Since no function has been added, there is no need to update if the app is working properly.
1.4
May 3, 2019
Now available on iPad.
Press the support button to display instructions and usage.
Press the support button to display instructions and usage.
1.3
Apr 25, 2019
Compatible with iPhone X.
1.2
Mar 1, 2017
You can change the plot scale of spectral intensity.
You can plot the wavelength scale by inputting two known wavelength points.
If the R0 wavelength is set as reflected light (0 nm) and the R1 wavelength is set only for the first time, the wavelength scale can be plotted by setting only the R0 wavelength after the second time.
You can save a plot with wavelength scale as an image.
You can plot the wavelength scale by inputting two known wavelength points.
If the R0 wavelength is set as reflected light (0 nm) and the R1 wavelength is set only for the first time, the wavelength scale can be plotted by setting only the R0 wavelength after the second time.
You can save a plot with wavelength scale as an image.
1.1
Feb 11, 2017
The values of R, G and B are respectively calculated as the average value of the central quarter width of the spectral image.
Plots of R, G, B are added.
Plots of R, G, B are added.
1.0
Feb 6, 2017
SpectralViewer, spectraView FAQ
Click here to learn how to download SpectralViewer, spectraView in restricted country or region.
Check the following list to see the minimum requirements of SpectralViewer, spectraView.
iPhone
Requires iOS 9.2 or later.
iPad
Requires iPadOS 9.2 or later.
iPod touch
Requires iOS 9.2 or later.
SpectralViewer, spectraView supports English
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Latest introduction video of SpectralViewer, spectraView on iPhone
