Inspection method of optical fiber coupling type laser diode
A laser diode, fiber coupling technology, applied in the direction of using optical devices, testing optical performance, measuring devices, etc., can solve the problems of parallel misalignment of optical axes, measurement errors, tilt, etc., and achieve the effect of rapid observation
Active Publication Date: 2015-07-08
DAINIPPON SCREEN MT HANGZHOU
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Problems solved by technology
But in practice, in the setting of fiber optic connectors, such as Figure 13A As shown, sometimes there is a situation where the outgoing light is parallel to the optical axis of the measurement optical system and misaligned. In addition, as Figure 13B As shown, sometimes the emitted light is inclined relative to the optical axis of the measurement optical system
In the case of parallel misalignment, due to coma aberration, the output beam to be obtained does not pass through the aperture or optical fibers other than the beam to be obtained pass through the aperture, which will cause measurement errors
In addition, in the case of inclination, it can also be seen from the geometrical drawing that the above-mentioned outgoing beam that is desired to be obtained does not pass through the opening or optical fibers other than the desired beam pass through the opening, resulting in measurement errors.
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[0040] Below, refer to the attached Figure 1~5 The present invention will be described by taking, as an example, the case where the present invention is applied to a plate-making apparatus as a computer-to-plate (CTP) apparatus.
[0041] figure 1 It is a front perspective view showing the plate making apparatus of the present invention. figure 2 It is a rear perspective view showing the plate making apparatus of the present invention. image 3 It is a front perspective view showing the plate making apparatus of the present invention with the front panel opened. Figure 4 It is a partial view showing the internal structure of the plate making apparatus of the present invention. Figure 5 is a side view showing the recording cylinder of the plate making apparatus of the present invention. Figure 6 It is a schematic diagram showing a drawing device and a recording drum. Figure 7 is a schematic diagram showing a fiber-coupled laser diode. Figure 8A is a schematic diagr...
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The invention provides an inspection method of an optical fiber coupling type laser diode. The inspection method is characterized by including steps: arranging the optical fiber coupling type laser diode on a clamp; arranging an observation optical system on the downstream side of a light path of emitted light of the optical fiber coupling type laser diode; and judging the procedures: judging whether arrangement errors exists by observing the emitted light of the optical fiber coupling type laser diode by aid of a charge coupled device (CCD) camera arranged in the observation optical system.
Description
technical field [0001] The invention relates to an inspection method for inspecting a fiber-coupled laser diode. Background technique [0002] Conventionally, there is known a plate-making apparatus comprising a cylindrical recording drum for mounting an image-recording material on its outer peripheral surface, and a rotating shaft for rotating the recording drum around the axis of the recording drum. Rotary rotary drive mechanism, recording head (drawing means) for aligning a light beam modulated according to an image signal to the image recording material. In such a plate making apparatus, the drawing device is moved in a direction parallel to the rotation axis of the recording drum by aiming the light beam from the drawing device at the image recording material mounted on the outer peripheral surface of the recording drum rotating at high speed , and record the desired image on the image recording material. [0003] In a drawing device, laser light is very suitable as a...
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IPC IPC(8): G01M11/02G01B11/27G01B11/26
Inventor 王舜祺
Owner DAINIPPON SCREEN MT HANGZHOU