Optical system for measurement, color luminance meter and colorimeter
An optical system and optical waveguide technology, applied in the field of colorimeters, which can solve problems such as light loss
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no. 1 approach
[0021] figure 1 It is a block diagram showing the configuration of the color brightness meter in the first embodiment. in addition, figure 1 It is also a block diagram showing the configuration of the color brightness meters Db and Dc in the second and third embodiments described later.
[0022] figure 2 It is a figure which shows the structure of the optical system for measurement using the said color brightness meter. figure 2 A shows the optical system for measurement in the first embodiment, figure 2 B shows an example of an optical fiber bundle as an optical waveguide. image 3 A ray diagram of each light beam from the output surface of the second optical system to the incident surface of the optical waveguide (optical fiber bundle) in the measurement optical system is shown. Figure 7 It is a figure which shows the structure of the optical system for a measurement in a comparative example. Figure 7 A shows the optical system for measurement in the comparative e...
no. 2 approach
[0046] Hereinafter, other embodiments will be described. Figure 4 It is a figure which shows the structure of the optical system for measurement in 2nd Embodiment.
[0047] The color luminance meter Da in the first embodiment utilizes the measuring optical system SSa having two lens groups of the first and second lens groups Gra-1 and Gra-2, and the above-mentioned first and second lens groups Gra- 1. Gra-2 forms an intermediate image of the object to be measured Ob, but the color luminance meter Db in the second embodiment uses the measurement optical system SSb that forms an intermediate image with one lens group Grc.
[0048] E.g figure 1As shown, the color luminance meter Db in the second embodiment includes a measurement optical system SSb, a light receiving unit 1 , a control processing unit 2 a , an input unit 3 , an output unit 4 , and an IF unit 5 . The light receiving unit 1, the control processing unit 2a, the input unit 3, the output unit 4, and the IF unit 5 in...
no. 3 approach
[0057] Hereinafter, other embodiments will be described. Figure 5 It is a figure which shows the structure of the optical system for measurement in 3rd Embodiment.
[0058] The color luminance meters Da, Db in the first and second embodiments utilize the measuring optical systems SSa, SSb equipped with the object-side telecentric first optical systems OSa-1, OSb-1, but in the third embodiment The color luminance meter Dc utilizes the measurement optical system SSc including the usual first optical system OSc-1 that is not particularly required to be object-side telecentric.
[0059] E.g figure 1 As shown, the color luminance meter Dc in the third embodiment includes a measurement optical system SSc, a light receiving unit 1 , a control processing unit 2 a , an input unit 3 , an output unit 4 , and an IF unit 5 . The light receiving unit 1, the control processing unit 2a, the input unit 3, the output unit 4, and the IF unit 5 in the color brightness meter Dc of the third emb...
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