The comparison goniometer is widely used to measure and inspect small angle, angle difference, and parallelism of two
surfaces. However, the common manner to read a comparison goniometer is to inspect the ocular of the goniometer by
one eye of the operator. To read an old goniometer that just equips with one adjustable ocular is a difficult work. In the
fabrication of an IR reflecting mirrors assembly, a common comparison goniometer is used to measure the angle errors
between two neighbor assembled mirrors. In this paper, a quick reading technique image-based for the comparison
goniometer used to inspect the parallelism of mirrors in a mirrors assembly is proposed. One digital camera, one
comparison goniometer and one set of computer are used to construct a reading system, the image of the sight field in the
comparison goniometer will be extracted and recognized to get the angle positions of the reflection surfaces to be
measured. In order to obtain the interval distance between the scale lines, a particular technique, left peak first method,
based on the local peak values of intensity in the true color image is proposed. A program written in VC++6.0 has been
developed to perform the color digital image processing.
The FPA Infrared imaging technology is widely used in military and civilian fields, and the optical readout FPA Infrared
imaging technology is one of the most important branch. How to get a higher sensitivity IR image is very important since
there are many factories that can degrade image quality. In this paper we introduce a method to improve system image
quality, which is called the holographic compensate illumination based on the holographic technology. Firstly, we
analyze the key influencing factors of the image quality of an optical readout FPA IR imaging system, and the two kinds
of manufacturing errors of the FPA are given. Then we point out the principle of the method to compensate the FPA
fabrication errors and design the experimental scheme. The result of the experiment shows that we can get a more
uniform and higher sensitivity IR image by the method of holographic compensate illumination.
Dichroic beam combiner is the kernel technology of the dual mode guiding simulation system. Based on the photonic
band gap structure of one-dimensional Photonic crystals, a new method of designing a diachronic beam combiner is
proposed in this paper, through which mid-IR region high reflection mirror coating is designed and calculated by using
plane-wave expansion method. Simple construction, combination of broad wave band beams in 2D and wide-angle is
realized, and polarization of off-axis incident beams is prevented. The analysis of infrared reflectivity and radio
frequency transmission rate demonstrates that this new method can perfectly satisfy the demand of design.
Comparison goniometer, precision autocollimator, can be used to measure parallelism or angular error. If the size of the
work piece to be measured is larger than the aperture of the objective lens, the measurement can not be carried through,
because a part of work piece can't be observed. A new technique, called overlapping measurement technique, is
proposed. The work piece will be moved, and two adjacent measurements must have an intercross. The relationship
between the readings of the autocollimator and the angular error has been deduced. A program written in VC++6.0 will
be used to process the measurement data.
After introducing the uncooled infrared imaging based on a novel
bi-material cantilever, this article emphasize on an
optical system of an IR imaging prototype. At first, we select the structure form of optical system. Our optical system
prototype consists of an imaging optical component and an optical readout component. The optical readout component
comes from 4f' optical system and has been made some improvement to reduce its size, weight and power consumption.
Then we measure and analyze the parameters of the FPA and CCD, in order to determine the geometrical sizes and the
aberration requirement for every lens. At last we report on the implement of the prototype. The imaging result is showed
in this paper. Experimental results indicate that the NETD of this system is less than 200mK.
The support device with 3-point are widely used in many kinds of support systems. However, some problems will
emerge when the device is used in high precision system. For example, in the self-adaptive optical system, the different
deformation of each support point will cause the dissimilar slope of the supported part of the system, will cause the
position error of segment mirror. This paper, using elastic mechanics theory to calculate the elastic deformation,
calculates the elasticity deformation of steel balls in the device; based on the principle of optical auto-collimation, tests
the related deformations of the three support points under different normal loads; according to the calculation and the
experimentation, compares and analyzes the results of calculation and experimentation, sums up the relationship between
deformation and support sphere diameter and load value; lastly, proposes the principia to determine the diameter of the
balls in high precision system, and provides reformative scheme to design a better support devices with 3-point. The
results of this paper have been used in the design and development of self-adaptive optical system.