National Applied Research Laboratories

Precision Instrument Development Center National Science Council

Shenq-Tsong Chang

Ting-Ming Huang

Wei-Cheng Lin

Tai-Shan Liao

Po-Han Huang

Shih-Feng Tseng

Hsu-Pin Pan

Ho-Lin Tsay

Bih-Chang Wang

Chia-Yen Chan

A measuring method for an optical element for obtaining a plurality of measurement errors of the optical element is disclosed, which comprises steps of irradiating a laser ray to an overall portion of the optical element, wherein the optical element is supported as one of a horizontal state and a vertical state; rotating continuously the optical element with 360 degrees to reflect the laser ray to obtain a reflected light wavefront picture from the reflected laser ray; analyzing the reflected light wavefront picture to obtain a plurality of aberration characteristics information, respectively, each being one of a sine and a cosine wave functions of a wavefront error for each of the plurality of specified rotation angles; analyzing a plurality of interference factors each for the plurality of measurement errors on each of the plurality of aberration characteristics information, respectively; calculating and extracting a plurality of classified aberration characteristics information for each of the plurality of specified rotation angles of the optical element from each of the plurality of aberration characteristics information according to the plurality of measurement errors, respectively; and analyzing each of the plurality of classified aberration characteristics information to obtain an error amount corresponding to each of the plurality of measurement errors, respectively.

Measuring optical element for aberration from gravity and holding

A gap compensation mechanism capable of self adaptive posture adjustment is disclosed, which comprises a base seat, having at least a fixation portion disposed thereon, the fixation portion having a flow path area disposed peripheral thereto; at least an adjustment unit, sleeved onto an outer rim of the fixation portion; and a filler, being filled within the flow path area. As such, a workpiece to be fixed may be disposed on a face of an adjustment unit. Further, the adjustment unit provides at least three freedoms for the altitude and two axial inclinations for self adaptively compensating a gap with any geometrical shapes and thus further adjusting the posture of the combined workpiece. After all the adjustments, a filler is filled to reinforce the structure and finally a fixation unit is employed for locking and fixing.

Gap compensation mechanism for self adaptive posture adjustment

The present invention discloses a system and method for nondestructively measuring the refractive index and the central thickness of a lens. The system comprises a radius measurement module arranged for measuring the curvature radius of the first surface of the lens; a focus measurement module arranged for measuring the best focus distance of the first surface of the lens; and a calculation module arranged for performing the first or the second calculation process according to the lensmaker's formula. Wherein, when the central thickness is given, the calculation module performs the first calculation process according to the curvature radius, the best focus distance and the central thickness to calculate the refractive index. On the contrary, when the refractive index is given, the calculation module performs the second calculation process according to the curvature radius, the best focus distance and the refractive index to calculate the central thickness.

System and method for nondestructive measuring refractive index and thickness of lens

The sensitivity adjusting equipment applied to a photoelectric smoke detector is provided. The photoelectric smoke detector includes a luminous component for providing an input light and a detecting component for receiving an even output light. The sensitivity adjusting equipment includes a light-scattering device having a scattering component and an adjustable hole for scattering the input light evenly and adjusting an intensity of the input light so as to output the even output light to the detecting component. The sensitivity adjusting equipment also includes a movable platform having a first brace connected to the photoelectric smoke detector and a supporting base having a second brace connected to the light-scattering device. The movable platform is moved to make the photoelectric smoke detector and the light-scattering device combined to adjust the sensitivity of the photoelectric smoke detector.

Sensitivity adjusting equipment of photoelectric smoke detector

Growing community of inventors

Hsinchu, Taiwan

Shenq-Tsong Chang