ZEISS ULTRA OPTIMETER (Animation): Construction, working, advantages and disadvantages.

Summary

The Zeiss Ultra Optimeter is a high-precision mechanical optical comparator that uses two mirrors for enhanced magnification, ideal for comparing component dimensions to standards. It features a green filter for clear imaging, movable mirror control, and a graticule screen for easy comparison. Benefits include high accuracy, no parallax error, and illuminated scale for easy readings. However, it has drawbacks such as heat sensitivity, reliance on power supply, bulkiness, and inconvenience for continuous use.

Takeaways

• 🔍 The Zeiss Ultra Optimeter is a mechanical optical comparator with higher magnification capabilities.
• 🌟 It uses two reflecting mirrors to enhance magnification, distinguishing it from other optical comparators.
• 🛠️ The construction includes components like a light source, green filter, condenser lens, plunger objective lens, and graticule screen.
• 💡 The working principle involves light passing through filters and lenses, reflecting off mirrors, and projecting an image onto a graticule screen.
• 📏 Magnification is determined by the distance between the plunger and pivot point, plunger movement, and the focal length of the objective lens.
• 🎯 High accuracy is achieved due to minimal moving parts.
• 👁️‍🗨️ No parallax error as the scale can align with the datum line.
• 🔬 Suitable for precision measurements due to its higher magnification.
• 💡 The optical lever is weightless, and the illuminated scale allows for readings under various lighting conditions.
• ⚠️ High magnification can lead to setting drift due to heat from the lamp or transformers.
• 🔌 Reliant on an external electrical power supply.
• 📦 Bulky and expensive apparatus.
• 🏙️ Requires a dark room when projecting the scale onto a screen.
• 🕒 Not ideal for continuous use as it requires viewing through an eyepiece.

Q & A

What is the primary function of the Zeiss Ultra Optimeter?

The Zeiss Ultra Optimeter is used to compare the dimensions of a given working component with the actual working standard.

How does the Zeiss Ultra Optimeter differ from a simple mechanical optical comparator?

The Zeiss Ultra Optimeter provides higher magnification than the simple mechanical optical comparator due to its use of two reflecting mirrors.

What are the key components of the Zeiss Ultra Optimeter?

The key components include a light source, green filter, condenser lens, index marking, two reflecting mirrors (M1 and M2), plunger objective lens, graticule screen, and eyepiece.

What is the role of the green filter in the Zeiss Ultra Optimeter?

The green filter allows only green light to pass through and filters out the remaining colors, enhancing the clarity of the image.

How does the magnification process work in the Zeiss Ultra Optimeter?

Magnification is achieved based on the distance between the plunger and the pivot point (x), the movement of the plunger (h), and the focal length of the objective lens (f). The formula for magnification is 2f/x.

What are the advantages of using the Zeiss Ultra Optimeter?

Advantages include high accuracy due to few moving parts, no parallax error, higher magnification for precision measurements, weightless optical lever, and illuminated scale for better visibility.

What are the disadvantages of the Zeiss Ultra Optimeter?

Disadvantages include potential setting drift due to heat, dependency on external electrical power supply, bulky and expensive apparatus, requirement of dark room for screen projection, and inconvenience for continuous use.

Why is the Zeiss Ultra Optimeter suitable for precision measurements?

It is suitable for precision measurements because of its high magnification capability, which allows for detailed comparisons of dimensions.

How does the Zeiss Ultra Optimeter handle parallax error?

The scale can be made to pass through the datum line, which eliminates parallax error and increases the range of measurements.

What is the significance of the optical lever being weightless in the Zeiss Ultra Optimeter?

A weightless optical lever ensures that the movement of the mirror is not affected by its own weight, leading to more accurate measurements.

Why is the scale in the Zeiss Ultra Optimeter illuminated?

The illuminated scale allows for easier reading of measurements regardless of the room lighting conditions.