Iizuka Yutaka
17 Papers
47 Citations
Iizuka Yutaka is an academic researcher. The author has contributed to research in topics: Lens (optics) & Eyepiece. The author has an hindex of 5, co-authored 17 publications.
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Papers
Patent
Achromatic optical system
Iizuka Yutaka
- 20 Jun 1986
TL;DR: In this paper, the chromatic aberration of IR light in a wide wavelength region was satisfactorily corrected by constituting an objective lens of zinc selenium and constituting a relay lens of one negative lens consisting of zinc sulfide and plural positive lenses consisting of germanium.
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Patent
Computer device with electrically rewritable nonvolatile memory and nonvolatile semiconductor memory
Iizuka Yutaka
- 16 Jan 1998
TL;DR: In this paper, the authors propose to store a program for changing stored contents to be executed in a computer device without increasing the number of the points of parts at the time of rewriting an operation program stored in an electrically rewritable nonvolatile memory.
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Patent
View finder for single-lens reflex camera
Iizuka Yutaka
- 01 Apr 1982
TL;DR: In this paper, the authors proposed to shorten the focal distance of an eyepiece system by placing composite positive lens component and negative lens component so as to leave a large air gap, which can be used to prevent a drop of the scale factor of a magnifier.
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Patent
Electronic inventory tag system
Iizuka Yutaka
- 20 Nov 2008
TL;DR: In this paper, an electronic inventory tag system comprising an inventory tag server and electronic inventory tags is proposed to eliminate the need for complicated and troublesome work for installing and operating the EIG system.
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Patent
Sales data processing device
Iizuka Yutaka
- 16 Mar 2015
TL;DR: In this paper, a sales data processing device capable of reducing the cost and time for printing and delivery of a receipt and also handling detailed processes complying with customers is proposed, which includes an approach detection part which detects a pre-registered portable communication terminal approaching; a customer information reference part which refers to customer registration data registered in advance associatively with the portable communication terminals; a checkout processing part which performs a checkout process for the customer related to the customer registered data, and generates an electronic receipt and print data; a proximity communication part which transmits the generated electronic receipt to the portable
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