Spot-Projector System for the Measurement of Intra-Pixel Response

1
Spot-Projector System for the Measurement of
Intra-Pixel Response Young Sam YU RIDL, RIT

• Background and Goal
• Many state-of-art observational instruments,
  including Hubble Space Telescope, operates in
  undersampled mode to achieve wide field of view
  and high-resolution at an affordable cost.
  Therefore, it is required to devise a method to
  measure the intra-pixel response.
• The measurement of uniformity of individual
  pixels
• The measurement of sensitivity and its variation
  between different pixels
• The measurement of sensitivity variation within
  a single pixel

Spot-projector equipments properties optics
5X Mitutoyo Objective lens (W.D 37.5 mm,
N.A.0.14) InfiniTube Standard
lens Pinholes 10 mm pinhole
10 µm pinhole Stages Newport motorized
linear stages Travel Range 1 in.
Resolution 0.0175 µm Image
Sensor KAF1062E CCD -1536 (H) x 1024 (V)
pixels - Pixel size 9 µm x 9 µm H1RG
CMOS - 1K x 1K pixels - Pixel size
10 µm x 10 µm light source HeNe (632.8 nm)
Laser
Summary/Future plan We demonstrated that our
Spot-projector is successfully working (Fig. 2)
. We will measure the point spread function of
Spot-Projector using Knife-edge technique. Then,
we will measure the Intra-Pixel Response of H1RG
CMOS image sensor.