SU84531A1 - A way to visually convert a negative image into a positive - Google Patents

A way to visually convert a negative image into a positive

Info

Publication number
SU84531A1
SU84531A1 SU382079A SU382079A SU84531A1 SU 84531 A1 SU84531 A1 SU 84531A1 SU 382079 A SU382079 A SU 382079A SU 382079 A SU382079 A SU 382079A SU 84531 A1 SU84531 A1 SU 84531A1
Authority
SU
USSR - Soviet Union
Prior art keywords
positive
way
negative image
negative
image
Prior art date
Application number
SU382079A
Other languages
Russian (ru)
Inventor
М.И. Штейнер
Original Assignee
М.И. Штейнер
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by М.И. Штейнер filed Critical М.И. Штейнер
Priority to SU382079A priority Critical patent/SU84531A1/en
Application granted granted Critical
Publication of SU84531A1 publication Critical patent/SU84531A1/en

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Description

Известные способы оценки качества и чтени  негативов до печати с них позитивных отпечатков не позвол ют быстро определ ть качество и отбирать необходимое фото и кинонегативы.The known methods of assessing the quality and reading of negatives before printing positive prints from them do not allow to quickly determine the quality and select the necessary photos and film negatives.

В описываемом способе этот недостаток устранен тем, что изобр,ажение негатива проицируетс  с помоп ыо инфракрасных лучей на фосфоресцирующий экран, кратковременно засвеченный ультрафиолетовым или видимым светом.In the described method, this disadvantage is eliminated by the fact that the image, the negative reduction of the negative is projected with the help of infrared rays on a phosphorescent screen, briefly illuminated by ultraviolet or visible light.

На чертсл е 1редставлеиа схема описываемого прибора дл  превращени  негативного изображени  в позитивное.At drawing 1 is a diagram of the described device for converting a negative image into a positive one.

В светоиепроницаемом  щике установлен источник излучени  1 содержащей в спектре )ракрасные лучп, которые проход т через фильтр 2, пропускающий только инфракрасные лучи, и конденсатор 3. Затем изображение с негатива 5 отбрасываетс  объективом 4 на фосфоресци )ующий экран 6. Предварительно экран 6 освещаетс  источником ультрафиолетового излучени  Действие описываемого прибора заключаетс  в следующем.In the light-permeable box there is a radiation source 1 containing in the spectrum) red rays that pass through filter 2, which transmits only infrared rays, and capacitor 3. Then the image from negative 5 is rejected by lens 4 onto the phosphorescent screen 6. Preliminary screen 6 is illuminated by the source ultraviolet radiation. The operation of the described device is as follows.

На фосфоресцирующий экран, предварительно освещенный ультрафиолетовым или видимым светом, проицируетс  с помощью инфракрасных лучей изображение негатива. Фосфоресценци  гаситс  в местах изображени , соответствующих светлы.м местам негатива, и на экране получаетс  позитивное изображение.On the phosphorescent screen, pre-illuminated by ultraviolet or visible light, a negative image is projected using infrared rays. The phosphorescence is quenched at the image locations corresponding to the light of the negative, and a positive image is obtained on the screen.

Описываемый прибор позвол ет увеличивать или уменьшать изображение на экране по сравнению с негативом.The described device allows you to increase or decrease the image on the screen compared to the negative.

П р е д м е т и з о б р е т е и и  PRIOR DIRECTORSHIP and

Способ визугльного преобразовани  негативного изображени  в позитивное , отличающийс  тем. что, с целью контрол  и чтени  негативов , последние проицируютс  на люмииесцирующпй экран с иомо11: ,ью источника инфракрасного излучени .A way of converting a negative image to a positive one, differing in that. that, in order to control and read the negatives, the latter are projected on a luminescent screen with an infrared source.

SU382079A 1948-07-27 1948-07-27 A way to visually convert a negative image into a positive SU84531A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU382079A SU84531A1 (en) 1948-07-27 1948-07-27 A way to visually convert a negative image into a positive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU382079A SU84531A1 (en) 1948-07-27 1948-07-27 A way to visually convert a negative image into a positive

Related Child Applications (1)

Application Number Title Priority Date Filing Date
SU772478130A Addition SU628476A2 (en) 1977-04-19 1977-04-19 Thyristorized voltage stabilizer

Publications (1)

Publication Number Publication Date
SU84531A1 true SU84531A1 (en) 1949-11-30

Family

ID=48257190

Family Applications (1)

Application Number Title Priority Date Filing Date
SU382079A SU84531A1 (en) 1948-07-27 1948-07-27 A way to visually convert a negative image into a positive

Country Status (1)

Country Link
SU (1) SU84531A1 (en)

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