Color stripe filter in color image pickup apparatus

Details Color stripe filter in color image pickup apparatus Color stripe filter in color image pickup apparatus

1988-12-28

1990-04-10

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 41, 358 42, 358 43, H04N 907, H04N 983

Patent

active

049165283

ABSTRACT:
A color separation stripe filter in a color image pickup apparatus in which a color image is focused on a photo-electric conversion target through the filter to be converted to an electrostatic image so as to generate a color multiplexed signal. The filter comprises a plurality of recurrent groups of three different color stripes successively arranged at periodic intervals. The first color stripe has a characteristic showing a peak transmission factor in a red color region, the second color stripe has a characteristic showing a peak transmission factor in a green color region which is substantially equal to the peak transmission factor of the first color stripe, and the third color stripe has a characteristic showing a negative peak transmission factor at a wavelength between 500 nm and 530 nm so as to produce first and second peak transmission factors in a blue region and said green region. The first peak transmission factor is substantially equal to each of the peak transmission factors of the first and second color stripes and the second peak transmission factor existing in the green color region to be 50% to 80% of each of the peak transmission factors of the first and second color stripes, a curve of the characteristic of the third color stripe in the green region being substantially similar in configuration to that of the second color stripe.

REFERENCES:
patent: 4395629 (1983-07-01), Sasano et al.
patent: 4565756 (1986-01-01), Needs et al.
patent: 4580159 (1986-04-01), Manabe
patent: 4630107 (1986-12-01), Takanashi et al.
patent: 4652911 (1987-03-01), Teranishi et al.
patent: 4710804 (1987-12-01), Ide
patent: 4721999 (1988-01-01), Takemura et al.

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