chunxin.laobing15 12/23/15 9:57 AM.
A:
It's very clear from the way you've set up the code that you're trying to load a file from the resources folder. You don't need to worry about your manifest file and requesting permissions from the user. Instead, you'll need to load the file using the method described in this article. Once you have the stream for the file you can use the method described in this answer to convert it to a byte array.
1. Field of the Invention
The present invention relates to a semiconductor laser device for forming a beam spot on a recording medium, such as a disk, and more particularly, to a semiconductor laser device provided with an optical system with an aspheric lens element.
2. Description of the Prior Art
An optical pickup apparatus for recording and/or reproducing information on a disk, such as a CD (compact disk) and a DVD (digital versatile disk) has a laser diode device for emitting a laser beam. To achieve high-density recording/reproduction, a beam spot is formed to be as small as possible. The laser diode device is usually used in an optical system with an aspheric lens element in order to form a beam spot with a minimized diameter.
Japanese Unexamined Patent Application Publication No. 2004-314736 discloses a semiconductor laser device that is provided with a first aspheric lens element to form a first beam spot on a recording medium, and with a second aspheric lens element to form a second beam spot, on the recording medium, on a focal point of the first beam spot. Japanese Unexamined Patent Application Publication No. 2004-314736 further discloses a semiconductor laser device that is provided with a third aspheric lens element to form a third beam spot on a focal point of the second beam spot.
The first aspheric lens element is made of a material having a relatively high refractive index, and the second aspheric lens element is made of a material having a relatively low refractive index, so that an Abbe's number of the material for the second aspheric lens element is increased, and the second aspheric lens element has a strong curvature. Further, a second focal point is formed on a surface of a second aspheric lens element, and the second focal point is moved on a surface ac619d1d87
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